class Input_Info(QWidget): """ Create widget for displaying infos about filter specs and filter design method """ sig_rx = pyqtSignal(object) # incoming signals from input_tab_widgets sig_tx = pyqtSignal(object) from pyfda.libs.pyfda_qt_lib import emit def __init__(self, parent=None): super(Input_Info, self).__init__(parent) self.tab_label = 'Info' self.tool_tip = ( "<span>Display the achieved filter specifications" " and more info about the filter design algorithm.</span>") self._construct_UI() self.load_dict() def process_sig_rx(self, dict_sig=None): """ Process signals coming from sig_rx """ # logger.debug("Processing {0}: {1}".format(type(dict_sig).__name__, dict_sig)) if 'data_changed' in dict_sig or 'view_changed' in dict_sig\ or 'specs_changed' in dict_sig: self.load_dict() def _construct_UI(self): """ Intitialize the widget, consisting of: - Checkboxes for selecting the info to be displayed - A large text window for displaying infos about the filter design algorithm """ bfont = QFont() bfont.setBold(True) # ============== UI Layout ===================================== # widget / subwindow for filter infos # self.butFiltPerf = QToolButton("H(f)", self) self.butFiltPerf = QPushButton(self) self.butFiltPerf.setText("H(f)") self.butFiltPerf.setCheckable(True) self.butFiltPerf.setChecked(True) self.butFiltPerf.setToolTip("Display frequency response at test frequencies.") self.butDebug = QPushButton(self) self.butDebug.setText("Debug") self.butDebug.setCheckable(True) self.butDebug.setChecked(False) self.butDebug.setToolTip("Show debugging options.") self.butAbout = QPushButton("About", self) # pop-up "About" window self.butSettings = QPushButton("Settings", self) # self.butSettings.setCheckable(True) self.butSettings.setChecked(False) self.butSettings.setToolTip("Display and set some settings") layHControls1 = QHBoxLayout() layHControls1.addWidget(self.butFiltPerf) layHControls1.addWidget(self.butAbout) layHControls1.addWidget(self.butSettings) layHControls1.addWidget(self.butDebug) self.butDocstring = QPushButton("Doc$", self) self.butDocstring.setCheckable(True) self.butDocstring.setChecked(False) self.butDocstring.setToolTip("Display docstring from python filter method.") self.butRichText = QPushButton("RTF", self) self.butRichText.setCheckable(HAS_DOCUTILS) self.butRichText.setChecked(HAS_DOCUTILS) self.butRichText.setEnabled(HAS_DOCUTILS) self.butRichText.setToolTip("Render documentation in Rich Text Format.") self.butFiltDict = QPushButton("FiltDict", self) self.butFiltDict.setToolTip("Show filter dictionary for debugging.") self.butFiltDict.setCheckable(True) self.butFiltDict.setChecked(False) self.butFiltTree = QPushButton("FiltTree", self) self.butFiltTree.setToolTip("Show filter tree for debugging.") self.butFiltTree.setCheckable(True) self.butFiltTree.setChecked(False) layHControls2 = QHBoxLayout() layHControls2.addWidget(self.butDocstring) # layHControls2.addStretch(1) layHControls2.addWidget(self.butRichText) # layHControls2.addStretch(1) layHControls2.addWidget(self.butFiltDict) # layHControls2.addStretch(1) layHControls2.addWidget(self.butFiltTree) self.frmControls2 = QFrame(self) self.frmControls2.setLayout(layHControls2) self.frmControls2.setVisible(self.butDebug.isChecked()) self.frmControls2.setContentsMargins(0, 0, 0, 0) lbl_settings_NFFT = QLabel(to_html("N_FFT =", frmt='bi'), self) self.led_settings_NFFT = QLineEdit(self) self.led_settings_NFFT.setText(str(params['N_FFT'])) self.led_settings_NFFT.setToolTip("<span>Number of FFT points for frequency " "domain widgets.</span>") layGSettings = QGridLayout() layGSettings.addWidget(lbl_settings_NFFT, 1, 0) layGSettings.addWidget(self.led_settings_NFFT, 1, 1) self.frmSettings = QFrame(self) self.frmSettings.setLayout(layGSettings) self.frmSettings.setVisible(self.butSettings.isChecked()) self.frmSettings.setContentsMargins(0, 0, 0, 0) layVControls = QVBoxLayout() layVControls.addLayout(layHControls1) layVControls.addWidget(self.frmControls2) layVControls.addWidget(self.frmSettings) self.frmMain = QFrame(self) self.frmMain.setLayout(layVControls) self.tblFiltPerf = QTableWidget(self) self.tblFiltPerf.setAlternatingRowColors(True) # self.tblFiltPerf.verticalHeader().setVisible(False) self.tblFiltPerf.horizontalHeader().setHighlightSections(False) self.tblFiltPerf.horizontalHeader().setFont(bfont) self.tblFiltPerf.verticalHeader().setHighlightSections(False) self.tblFiltPerf.verticalHeader().setFont(bfont) self.txtFiltInfoBox = QTextBrowser(self) self.txtFiltDict = QTextBrowser(self) self.txtFiltTree = QTextBrowser(self) layVMain = QVBoxLayout() layVMain.addWidget(self.frmMain) # layVMain.addLayout(self.layHControls) splitter = QSplitter(self) splitter.setOrientation(Qt.Vertical) splitter.addWidget(self.tblFiltPerf) splitter.addWidget(self.txtFiltInfoBox) splitter.addWidget(self.txtFiltDict) splitter.addWidget(self.txtFiltTree) # setSizes uses absolute pixel values, but can be "misused" by specifying values # that are way too large: in this case, the space is distributed according # to the _ratio_ of the values: splitter.setSizes([3000, 10000, 1000, 1000]) layVMain.addWidget(splitter) layVMain.setContentsMargins(*params['wdg_margins']) self.setLayout(layVMain) # ---------------------------------------------------------------------- # GLOBAL SIGNALS & SLOTs # ---------------------------------------------------------------------- self.sig_rx.connect(self.process_sig_rx) # ---------------------------------------------------------------------- # LOCAL SIGNALS & SLOTs # ---------------------------------------------------------------------- self.butFiltPerf.clicked.connect(self._show_filt_perf) self.butAbout.clicked.connect(self._about_window) self.butSettings.clicked.connect(self._show_settings) self.led_settings_NFFT.editingFinished.connect(self._update_settings_nfft) self.butDebug.clicked.connect(self._show_debug) self.butFiltDict.clicked.connect(self._show_filt_dict) self.butFiltTree.clicked.connect(self._show_filt_tree) self.butDocstring.clicked.connect(self._show_doc) self.butRichText.clicked.connect(self._show_doc) def _about_window(self): self.about_widget = AboutWindow(self) # important: Handle must be class attribute # self.opt_widget.show() # modeless dialog, i.e. non-blocking self.about_widget.exec_() # modal dialog (blocking) # ------------------------------------------------------------------------------ def _show_debug(self): """ Show / hide debug options depending on the state of the debug button """ self.frmControls2.setVisible(self.butDebug.isChecked()) # ------------------------------------------------------------------------------ def _show_settings(self): """ Show / hide settings options depending on the state of the settings button """ self.frmSettings.setVisible(self.butSettings.isChecked()) def _update_settings_nfft(self): """ Update value for self.par1 from QLineEdit Widget""" params['N_FFT'] = safe_eval(self.led_settings_NFFT.text(), params['N_FFT'], sign='pos', return_type='int') self.led_settings_NFFT.setText(str(params['N_FFT'])) self.emit({'data_changed': 'n_fft'}) # ------------------------------------------------------------------------------ def load_dict(self): """ update docs and filter performance """ self._show_doc() self._show_filt_perf() self._show_filt_dict() self._show_filt_tree() # ------------------------------------------------------------------------------ def _show_doc(self): """ Display info from filter design file and docstring """ if hasattr(ff.fil_inst, 'info'): if self.butRichText.isChecked(): self.txtFiltInfoBox.setText(publish_string( self._clean_doc(ff.fil_inst.info), writer_name='html', settings_overrides={'output_encoding': 'unicode'})) else: self.txtFiltInfoBox.setText(textwrap.dedent(ff.fil_inst.info)) else: self.txtFiltInfoBox.setText("") if self.butDocstring.isChecked() and hasattr(ff.fil_inst, 'info_doc'): if self.butRichText.isChecked(): self.txtFiltInfoBox.append( '<hr /><b>Python module docstring:</b>\n') for doc in ff.fil_inst.info_doc: self.txtFiltInfoBox.append(publish_string( self._clean_doc(doc), writer_name='html', settings_overrides={'output_encoding': 'unicode'})) else: self.txtFiltInfoBox.append('\nPython module docstring:\n') for doc in ff.fil_inst.info_doc: self.txtFiltInfoBox.append(self._clean_doc(doc)) self.txtFiltInfoBox.moveCursor(QTextCursor.Start) def _clean_doc(self, doc): """ Remove uniform number of leading blanks from docstrings for subsequent processing of rich text. The first line is treated differently, _all_ leading blanks are removed (if any). This allows for different formats of docstrings. """ lines = doc.splitlines() result = lines[0].lstrip() + "\n" + textwrap.dedent("\n".join(lines[1:])) return result # ------------------------------------------------------------------------------ def _show_filt_perf(self): """ Print filter properties in a table at frequencies of interest. When specs are violated, colour the table entry in red. """ antiC = False def _find_min_max(self, f_start, f_stop, unit='dB'): """ Find minimum and maximum magnitude and the corresponding frequencies for the filter defined in the filter dict in a given frequency band [f_start, f_stop]. """ w = np.linspace(f_start, f_stop, params['N_FFT'])*2*np.pi [w, H] = sig.freqz(bb, aa, worN=w) # add antiCausals if we have them if (antiC): # # Evaluate transfer function of anticausal half on the same freq grid. # wa, ha = sig.freqz(bbA, aaA, worN=w) ha = ha.conjugate() # # Total transfer function is the product # H = H*ha f = w / (2.0 * pi) # frequency normalized to f_S H_abs = abs(H) H_max = max(H_abs) H_min = min(H_abs) F_max = f[np.argmax(H_abs)] # find the frequency where H_abs F_min = f[np.argmin(H_abs)] # becomes max resp. min if unit == 'dB': H_max = 20*log10(H_max) H_min = 20*log10(H_min) return F_min, H_min, F_max, H_max # ------------------------------------------------------------------ self.tblFiltPerf.setVisible(self.butFiltPerf.isChecked()) if self.butFiltPerf.isChecked(): bb = fb.fil[0]['ba'][0] aa = fb.fil[0]['ba'][1] # 'rpk' means nonCausal filter if 'rpk' in fb.fil[0]: antiC = True bbA = fb.fil[0]['baA'][0] aaA = fb.fil[0]['baA'][1] bbA = bbA.conjugate() aaA = aaA.conjugate() f_S = fb.fil[0]['f_S'] f_lbls = [] f_vals = [] a_lbls = [] a_targs = [] a_targs_dB = [] a_test = [] ft = fb.fil[0]['ft'] # get filter type ('IIR', 'FIR') unit = fb.fil[0]['amp_specs_unit'] unit = 'dB' # fix this for the moment # construct pairs of corner frequency and corresponding amplitude # labels in ascending frequency for each response type if fb.fil[0]['rt'] in {'LP', 'HP', 'BP', 'BS', 'HIL'}: if fb.fil[0]['rt'] == 'LP': f_lbls = ['F_PB', 'F_SB'] a_lbls = ['A_PB', 'A_SB'] elif fb.fil[0]['rt'] == 'HP': f_lbls = ['F_SB', 'F_PB'] a_lbls = ['A_SB', 'A_PB'] elif fb.fil[0]['rt'] == 'BP': f_lbls = ['F_SB', 'F_PB', 'F_PB2', 'F_SB2'] a_lbls = ['A_SB', 'A_PB', 'A_PB', 'A_SB2'] elif fb.fil[0]['rt'] == 'BS': f_lbls = ['F_PB', 'F_SB', 'F_SB2', 'F_PB2'] a_lbls = ['A_PB', 'A_SB', 'A_SB', 'A_PB2'] elif fb.fil[0]['rt'] == 'HIL': f_lbls = ['F_PB', 'F_PB2'] a_lbls = ['A_PB', 'A_PB'] # Try to get lists of frequency / amplitude specs from the filter dict # that correspond to the f_lbls / a_lbls pairs defined above # When one of the labels doesn't exist in the filter dict, delete # all corresponding amplitude and frequency entries. err = [False] * len(f_lbls) # initialize error list f_vals = [] a_targs = [] for i in range(len(f_lbls)): try: f = fb.fil[0][f_lbls[i]] f_vals.append(f) except KeyError as e: f_vals.append('') err[i] = True logger.debug(e) try: a = fb.fil[0][a_lbls[i]] a_dB = lin2unit(fb.fil[0][a_lbls[i]], ft, a_lbls[i], unit) a_targs.append(a) a_targs_dB.append(a_dB) except KeyError as e: a_targs.append('') a_targs_dB.append('') err[i] = True logger.debug(e) for i in range(len(f_lbls)): if err[i]: del f_lbls[i] del f_vals[i] del a_lbls[i] del a_targs[i] del a_targs_dB[i] f_vals = np.asarray(f_vals) # convert to numpy array logger.debug("F_test_labels = %s" % f_lbls) # Calculate frequency response at test frequencies [w_test, a_test] = sig.freqz(bb, aa, 2.0 * pi * f_vals.astype(float)) # add antiCausals if we have them if (antiC): wa, ha = sig.freqz(bbA, aaA, 2.0 * pi * f_vals.astype(float)) ha = ha.conjugate() a_test = a_test*ha (F_min, H_min, F_max, H_max) = _find_min_max(self, 0, 1, unit='V') # append frequencies and values for min. and max. filter reponse to # test vector f_lbls += ['Min.', 'Max.'] # QTableView does not support direct formatting, use QLabel f_vals = np.append(f_vals, [F_min, F_max]) a_targs = np.append(a_targs, [np.nan, np.nan]) a_targs_dB = np.append(a_targs_dB, [np.nan, np.nan]) a_test = np.append(a_test, [H_min, H_max]) # calculate response of test frequencies in dB a_test_dB = -20*log10(abs(a_test)) # get filter type ('IIR', 'FIR') for dB <-> lin conversion ft = fb.fil[0]['ft'] # unit = fb.fil[0]['amp_specs_unit'] unit = 'dB' # make this fixed for the moment # build a list with the corresponding target specs: a_targs_pass = [] eps = 1e-3 for i in range(len(f_lbls)): if 'PB' in f_lbls[i]: a_targs_pass.append((a_test_dB[i] - a_targs_dB[i]) < eps) a_test[i] = 1 - abs(a_test[i]) elif 'SB' in f_lbls[i]: a_targs_pass.append(a_test_dB[i] >= a_targs_dB[i]) else: a_targs_pass.append(True) self.targs_spec_passed = np.all(a_targs_pass) logger.debug( "H_targ = {0}\n" "H_test = {1}\n" "H_test_dB = {2}\n" "F_test = {3}\n" "H_targ_pass = {4}\n" "passed: {5}\n".format(a_targs, a_test, a_test_dB, f_vals, a_targs_pass, self.targs_spec_passed)) self.tblFiltPerf.setRowCount(len(a_test)) # number of table rows self.tblFiltPerf.setColumnCount(5) # number of table columns self.tblFiltPerf.setHorizontalHeaderLabels([ 'f/{0:s}'.format(fb.fil[0]['freq_specs_unit']), 'Spec\n(dB)', '|H(f)|\n(dB)', 'Spec', '|H(f)|']) self.tblFiltPerf.setVerticalHeaderLabels(f_lbls) for row in range(len(a_test)): self.tblFiltPerf.setItem( row, 0, QTableWidgetItem(str('{0:.4g}'.format(f_vals[row]*f_S)))) self.tblFiltPerf.setItem( row, 1, QTableWidgetItem(str('%2.3g'%(-a_targs_dB[row])))) self.tblFiltPerf.setItem( row, 2, QTableWidgetItem(str('%2.3f'%(-a_test_dB[row])))) if a_targs[row] < 0.01: self.tblFiltPerf.setItem( row, 3, QTableWidgetItem(str('%.3e'%(a_targs[row])))) else: self.tblFiltPerf.setItem( row, 3, QTableWidgetItem(str('%2.4f'%(a_targs[row])))) if a_test[row] < 0.01: self.tblFiltPerf.setItem( row, 4, QTableWidgetItem(str('%.3e'%(abs(a_test[row]))))) else: self.tblFiltPerf.setItem( row, 4, QTableWidgetItem(str('%.4f'%(abs(a_test[row]))))) if not a_targs_pass[row]: self.tblFiltPerf.item(row, 1).setBackground(QtGui.QColor('red')) self.tblFiltPerf.item(row, 3).setBackground(QtGui.QColor('red')) self.tblFiltPerf.resizeColumnsToContents() self.tblFiltPerf.resizeRowsToContents() # ------------------------------------------------------------------------------ def _show_filt_dict(self): """ Print filter dict for debugging """ self.txtFiltDict.setVisible(self.butFiltDict.isChecked()) fb_sorted = [str(key) + ' : ' + str(fb.fil[0][key]) for key in sorted(fb.fil[0].keys())] dictstr = pprint.pformat(fb_sorted) # dictstr = pprint.pformat(fb.fil[0]) self.txtFiltDict.setText(dictstr) # ------------------------------------------------------------------------------ def _show_filt_tree(self): """ Print filter tree for debugging """ self.txtFiltTree.setVisible(self.butFiltTree.isChecked()) ftree_sorted = ['<b>' + str(key) + ' : ' + '</b>' + str(fb.fil_tree[key]) for key in sorted(fb.fil_tree.keys())] dictstr = pprint.pformat(ftree_sorted, indent=4) # dictstr = pprint.pformat(fb.fil[0]) self.txtFiltTree.setText(dictstr)
class Firwin(QWidget): FRMT = 'ba' # output format(s) of filter design routines 'zpk' / 'ba' / 'sos' # currently, only 'ba' is supported for firwin routines sig_tx = pyqtSignal(object) def __init__(self): QWidget.__init__(self) self.ft = 'FIR' self.fft_window = None # dictionary for firwin window settings self.win_dict = fb.fil[0]['win_fir'] c = Common() self.rt_dict = c.rt_base_iir self.rt_dict_add = { 'COM': { 'min': { 'msg': ('a', r"<br /><b>Note:</b> Filter order is only a rough approximation " "and most likely far too low!") }, 'man': { 'msg': ('a', r"Enter desired filter order <b><i>N</i></b> and " "<b>-6 dB</b> pass band corner " "frequency(ies) <b><i>F<sub>C</sub></i></b> .") }, }, 'LP': { 'man': {}, 'min': {} }, 'HP': { 'man': { 'msg': ('a', r"<br /><b>Note:</b> Order needs to be odd!") }, 'min': {} }, 'BS': { 'man': { 'msg': ('a', r"<br /><b>Note:</b> Order needs to be odd!") }, 'min': {} }, 'BP': { 'man': {}, 'min': {} }, } self.info = """**Windowed FIR filters** are designed by truncating the infinite impulse response of an ideal filter with a window function. The kind of used window has strong influence on ripple etc. of the resulting filter. **Design routines:** ``scipy.signal.firwin()`` """ #self.info_doc = [] is set in self._update_UI() #------------------- end of static info for filter tree --------------- #---------------------------------------------------------------------- def construct_UI(self): """ Create additional subwidget(s) needed for filter design: These subwidgets are instantiated dynamically when needed in select_filter.py using the handle to the filter object, fb.filObj . """ # Combobox for selecting the algorithm to estimate minimum filter order self.cmb_firwin_alg = QComboBox(self) self.cmb_firwin_alg.setObjectName('wdg_cmb_firwin_alg') self.cmb_firwin_alg.addItems(['ichige', 'kaiser', 'herrmann']) # Minimum size, can be changed in the upper hierarchy levels using layouts: self.cmb_firwin_alg.setSizeAdjustPolicy(QComboBox.AdjustToContents) self.cmb_firwin_alg.hide() # Combobox for selecting the window used for filter design self.cmb_firwin_win = QComboBox(self) self.cmb_firwin_win.addItems(get_window_names()) self.cmb_firwin_win.setObjectName('wdg_cmb_firwin_win') # Minimum size, can be changed in the upper hierarchy levels using layouts: self.cmb_firwin_win.setSizeAdjustPolicy(QComboBox.AdjustToContents) self.but_fft_win = QPushButton(self) self.but_fft_win.setText("WIN FFT") self.but_fft_win.setToolTip( "Show time and frequency response of FFT Window") self.but_fft_win.setCheckable(True) self.but_fft_win.setChecked(False) self.lblWinPar1 = QLabel("a", self) self.lblWinPar1.setObjectName('wdg_lbl_firwin_1') self.ledWinPar1 = QLineEdit(self) self.ledWinPar1.setText("0.5") self.ledWinPar1.setObjectName('wdg_led_firwin_1') self.lblWinPar1.setVisible(False) self.ledWinPar1.setVisible(False) self.lblWinPar2 = QLabel("b", self) self.lblWinPar2.setObjectName('wdg_lbl_firwin_2') self.ledWinPar2 = QLineEdit(self) self.ledWinPar2.setText("0.5") self.ledWinPar2.setObjectName('wdg_led_firwin_2') self.ledWinPar2.setVisible(False) self.lblWinPar2.setVisible(False) self.layHWin1 = QHBoxLayout() self.layHWin1.addWidget(self.cmb_firwin_win) self.layHWin1.addWidget(self.but_fft_win) self.layHWin1.addWidget(self.cmb_firwin_alg) self.layHWin2 = QHBoxLayout() self.layHWin2.addWidget(self.lblWinPar1) self.layHWin2.addWidget(self.ledWinPar1) self.layHWin2.addWidget(self.lblWinPar2) self.layHWin2.addWidget(self.ledWinPar2) self.layVWin = QVBoxLayout() self.layVWin.addLayout(self.layHWin1) self.layVWin.addLayout(self.layHWin2) self.layVWin.setContentsMargins(0, 0, 0, 0) # Widget containing all subwidgets (cmbBoxes, Labels, lineEdits) self.wdg_fil = QWidget(self) self.wdg_fil.setObjectName('wdg_fil') self.wdg_fil.setLayout(self.layVWin) #---------------------------------------------------------------------- # SIGNALS & SLOTs #---------------------------------------------------------------------- self.cmb_firwin_alg.activated.connect(self._update_win_fft) self.cmb_firwin_win.activated.connect(self._update_win_fft) self.ledWinPar1.editingFinished.connect(self._read_param1) self.ledWinPar2.editingFinished.connect(self._read_param2) self.but_fft_win.clicked.connect(self.show_fft_win) #---------------------------------------------------------------------- self._load_dict() # get initial / last setting from dictionary self._update_win_fft() #============================================================================= # Copied from impz() #============================================================================== def _read_param1(self): """Read out textbox when editing is finished and update dict and fft window""" param = safe_eval(self.ledWinPar1.text(), self.win_dict['par'][0]['val'], sign='pos', return_type='float') if param < self.win_dict['par'][0]['min']: param = self.win_dict['par'][0]['min'] elif param > self.win_dict['par'][0]['max']: param = self.win_dict['par'][0]['max'] self.ledWinPar1.setText(str(param)) self.win_dict['par'][0]['val'] = param self._update_win_fft() def _read_param2(self): """Read out textbox when editing is finished and update dict and fft window""" param = safe_eval(self.ledWinPar2.text(), self.win_dict['par'][1]['val'], return_type='float') if param < self.win_dict['par'][1]['min']: param = self.win_dict['par'][1]['min'] elif param > self.win_dict['par'][1]['max']: param = self.win_dict['par'][1]['max'] self.ledWinPar2.setText(str(param)) self.win_dict['par'][1]['val'] = param self._update_win_fft() def _update_win_fft(self): """ Update window type for FirWin """ self.alg = str(self.cmb_firwin_alg.currentText()) self.fir_window_name = qget_cmb_box(self.cmb_firwin_win, data=False) self.win = calc_window_function(self.win_dict, self.fir_window_name, N=self.N, sym=True) n_par = self.win_dict['n_par'] self.lblWinPar1.setVisible(n_par > 0) self.ledWinPar1.setVisible(n_par > 0) self.lblWinPar2.setVisible(n_par > 1) self.ledWinPar2.setVisible(n_par > 1) if n_par > 0: self.lblWinPar1.setText( to_html(self.win_dict['par'][0]['name'] + " =", frmt='bi')) self.ledWinPar1.setText(str(self.win_dict['par'][0]['val'])) self.ledWinPar1.setToolTip(self.win_dict['par'][0]['tooltip']) if n_par > 1: self.lblWinPar2.setText( to_html(self.win_dict['par'][1]['name'] + " =", frmt='bi')) self.ledWinPar2.setText(str(self.win_dict['par'][1]['val'])) self.ledWinPar2.setToolTip(self.win_dict['par'][1]['tooltip']) # sig_tx -> select_filter -> filter_specs self.sig_tx.emit({'sender': __name__, 'filt_changed': 'firwin'}) #============================================================================= def _load_dict(self): """ Reload window selection and parameters from filter dictionary and set UI elements accordingly. load_dict() is called upon initialization and when the filter is loaded from disk. """ self.N = fb.fil[0]['N'] win_idx = 0 alg_idx = 0 if 'wdg_fil' in fb.fil[0] and 'firwin' in fb.fil[0]['wdg_fil']: wdg_fil_par = fb.fil[0]['wdg_fil']['firwin'] if 'win' in wdg_fil_par: if np.isscalar( wdg_fil_par['win']): # true for strings (non-vectors) window = wdg_fil_par['win'] else: window = wdg_fil_par['win'][0] self.ledWinPar1.setText(str(wdg_fil_par['win'][1])) if len(wdg_fil_par['win']) > 2: self.ledWinPar2.setText(str(wdg_fil_par['win'][2])) # find index for window string win_idx = self.cmb_firwin_win.findText( window, Qt.MatchFixedString) # case insensitive flag if win_idx == -1: # Key does not exist, use first entry instead win_idx = 0 if 'alg' in wdg_fil_par: alg_idx = self.cmb_firwin_alg.findText(wdg_fil_par['alg'], Qt.MatchFixedString) if alg_idx == -1: # Key does not exist, use first entry instead alg_idx = 0 self.cmb_firwin_win.setCurrentIndex( win_idx) # set index for window and self.cmb_firwin_alg.setCurrentIndex(alg_idx) # and algorithm cmbBox def _store_entries(self): """ Store window and alg. selection and parameter settings (part of self.firWindow, if any) in filter dictionary. """ if not 'wdg_fil' in fb.fil[0]: fb.fil[0].update({'wdg_fil': {}}) fb.fil[0]['wdg_fil'].update( {'firwin': { 'win': self.firWindow, 'alg': self.alg }}) def _get_params(self, fil_dict): """ Translate parameters from the passed dictionary to instance parameters, scaling / transforming them if needed. """ self.N = fil_dict['N'] self.F_PB = fil_dict['F_PB'] self.F_SB = fil_dict['F_SB'] self.F_PB2 = fil_dict['F_PB2'] self.F_SB2 = fil_dict['F_SB2'] self.F_C = fil_dict['F_C'] self.F_C2 = fil_dict['F_C2'] # firwin amplitude specs are linear (not in dBs) self.A_PB = fil_dict['A_PB'] self.A_PB2 = fil_dict['A_PB2'] self.A_SB = fil_dict['A_SB'] self.A_SB2 = fil_dict['A_SB2'] # self.alg = 'ichige' # algorithm for determining the minimum order # self.alg = self.cmb_firwin_alg.currentText() def _test_N(self): """ Warn the user if the calculated order is too high for a reasonable filter design. """ if self.N > 1000: return qfilter_warning(self, self.N, "FirWin") else: return True def _save(self, fil_dict, arg): """ Convert between poles / zeros / gain, filter coefficients (polynomes) and second-order sections and store all available formats in the passed dictionary 'fil_dict'. """ fil_save(fil_dict, arg, self.FRMT, __name__) try: # has the order been calculated by a "min" filter design? fil_dict['N'] = self.N # yes, update filterbroker except AttributeError: pass # self._store_entries() #------------------------------------------------------------------------------ def firwin(self, numtaps, cutoff, window=None, pass_zero=True, scale=True, nyq=1.0, fs=None): """ FIR filter design using the window method. This is more or less the same as `scipy.signal.firwin` with the exception that an ndarray with the window values can be passed as an alternative to the window name. The parameters "width" (specifying a Kaiser window) and "fs" have been omitted, they are not needed here. This function computes the coefficients of a finite impulse response filter. The filter will have linear phase; it will be Type I if `numtaps` is odd and Type II if `numtaps` is even. Type II filters always have zero response at the Nyquist rate, so a ValueError exception is raised if firwin is called with `numtaps` even and having a passband whose right end is at the Nyquist rate. Parameters ---------- numtaps : int Length of the filter (number of coefficients, i.e. the filter order + 1). `numtaps` must be even if a passband includes the Nyquist frequency. cutoff : float or 1D array_like Cutoff frequency of filter (expressed in the same units as `nyq`) OR an array of cutoff frequencies (that is, band edges). In the latter case, the frequencies in `cutoff` should be positive and monotonically increasing between 0 and `nyq`. The values 0 and `nyq` must not be included in `cutoff`. window : ndarray or string string: use the window with the passed name from scipy.signal.windows ndarray: The window values - this is an addition to the original firwin routine. pass_zero : bool, optional If True, the gain at the frequency 0 (i.e. the "DC gain") is 1. Otherwise the DC gain is 0. scale : bool, optional Set to True to scale the coefficients so that the frequency response is exactly unity at a certain frequency. That frequency is either: - 0 (DC) if the first passband starts at 0 (i.e. pass_zero is True) - `nyq` (the Nyquist rate) if the first passband ends at `nyq` (i.e the filter is a single band highpass filter); center of first passband otherwise nyq : float, optional Nyquist frequency. Each frequency in `cutoff` must be between 0 and `nyq`. Returns ------- h : (numtaps,) ndarray Coefficients of length `numtaps` FIR filter. Raises ------ ValueError If any value in `cutoff` is less than or equal to 0 or greater than or equal to `nyq`, if the values in `cutoff` are not strictly monotonically increasing, or if `numtaps` is even but a passband includes the Nyquist frequency. See also -------- scipy.firwin """ cutoff = np.atleast_1d(cutoff) / float(nyq) # Check for invalid input. if cutoff.ndim > 1: raise ValueError("The cutoff argument must be at most " "one-dimensional.") if cutoff.size == 0: raise ValueError("At least one cutoff frequency must be given.") if cutoff.min() <= 0 or cutoff.max() >= 1: raise ValueError( "Invalid cutoff frequency {0}: frequencies must be " "greater than 0 and less than nyq.".format(cutoff)) if np.any(np.diff(cutoff) <= 0): raise ValueError("Invalid cutoff frequencies: the frequencies " "must be strictly increasing.") pass_nyquist = bool(cutoff.size & 1) ^ pass_zero if pass_nyquist and numtaps % 2 == 0: raise ValueError( "A filter with an even number of coefficients must " "have zero response at the Nyquist rate.") # Insert 0 and/or 1 at the ends of cutoff so that the length of cutoff # is even, and each pair in cutoff corresponds to passband. cutoff = np.hstack(([0.0] * pass_zero, cutoff, [1.0] * pass_nyquist)) # `bands` is a 2D array; each row gives the left and right edges of # a passband. bands = cutoff.reshape(-1, 2) # Build up the coefficients. alpha = 0.5 * (numtaps - 1) m = np.arange(0, numtaps) - alpha h = 0 for left, right in bands: h += right * sinc(right * m) h -= left * sinc(left * m) if type(window) == str: # Get and apply the window function. from scipy.signal.signaltools import get_window win = get_window(window, numtaps, fftbins=False) elif type(window) == np.ndarray: win = window else: logger.error( "The 'window' was neither a string nor a numpy array, it could not be evaluated." ) return None # apply the window function. h *= win # Now handle scaling if desired. if scale: # Get the first passband. left, right = bands[0] if left == 0: scale_frequency = 0.0 elif right == 1: scale_frequency = 1.0 else: scale_frequency = 0.5 * (left + right) c = np.cos(np.pi * m * scale_frequency) s = np.sum(h * c) h /= s return h def _firwin_ord(self, F, W, A, alg): #http://www.mikroe.com/chapters/view/72/chapter-2-fir-filters/ delta_f = abs(F[1] - F[0]) * 2 # referred to f_Ny delta_A = np.sqrt(A[0] * A[1]) if self.fir_window_name == 'kaiser': N, beta = sig.kaiserord(20 * np.log10(np.abs(fb.fil[0]['A_SB'])), delta_f) self.ledWinPar1.setText(str(beta)) fb.fil[0]['wdg_fil'][1] = beta self._update_UI() else: N = remezord(F, W, A, fs=1, alg=alg)[0] return N def LPmin(self, fil_dict): self._get_params(fil_dict) self.N = self._firwin_ord([self.F_PB, self.F_SB], [1, 0], [self.A_PB, self.A_SB], alg=self.alg) if not self._test_N(): return -1 self.fir_window = calc_window_function(self.win_dict, self.fir_window_name, N=self.N, sym=True) fil_dict['F_C'] = (self.F_SB + self.F_PB ) / 2 # use average of calculated F_PB and F_SB self._save( fil_dict, self.firwin(self.N, fil_dict['F_C'], window=self.fir_window, nyq=0.5)) def LPman(self, fil_dict): self._get_params(fil_dict) if not self._test_N(): return -1 self.fir_window = calc_window_function(self.win_dict, self.fir_window_name, N=self.N, sym=True) self._save( fil_dict, self.firwin(self.N, fil_dict['F_C'], window=self.fir_window, nyq=0.5)) def HPmin(self, fil_dict): self._get_params(fil_dict) N = self._firwin_ord([self.F_SB, self.F_PB], [0, 1], [self.A_SB, self.A_PB], alg=self.alg) self.N = round_odd(N) # enforce odd order if not self._test_N(): return -1 self.fir_window = calc_window_function(self.win_dict, self.fir_window_name, N=self.N, sym=True) fil_dict['F_C'] = (self.F_SB + self.F_PB ) / 2 # use average of calculated F_PB and F_SB self._save( fil_dict, self.firwin(self.N, fil_dict['F_C'], window=self.fir_window, pass_zero=False, nyq=0.5)) def HPman(self, fil_dict): self._get_params(fil_dict) self.N = round_odd(self.N) # enforce odd order if not self._test_N(): return -1 self.fir_window = calc_window_function(self.win_dict, self.fir_window_name, N=self.N, sym=True) self._save( fil_dict, self.firwin(self.N, fil_dict['F_C'], window=self.fir_window, pass_zero=False, nyq=0.5)) # For BP and BS, F_PB and F_SB have two elements each def BPmin(self, fil_dict): self._get_params(fil_dict) self.N = remezord([self.F_SB, self.F_PB, self.F_PB2, self.F_SB2], [0, 1, 0], [self.A_SB, self.A_PB, self.A_SB2], fs=1, alg=self.alg)[0] if not self._test_N(): return -1 self.fir_window = calc_window_function(self.win_dict, self.fir_window_name, N=self.N, sym=True) fil_dict['F_C'] = (self.F_SB + self.F_PB ) / 2 # use average of calculated F_PB and F_SB fil_dict['F_C2'] = (self.F_SB2 + self.F_PB2 ) / 2 # use average of calculated F_PB and F_SB self._save( fil_dict, self.firwin(self.N, [fil_dict['F_C'], fil_dict['F_C2']], window=self.fir_window, pass_zero=False, nyq=0.5)) def BPman(self, fil_dict): self._get_params(fil_dict) if not self._test_N(): return -1 self.fir_window = calc_window_function(self.win_dict, self.fir_window_name, N=self.N, sym=True) self._save( fil_dict, self.firwin(self.N, [fil_dict['F_C'], fil_dict['F_C2']], window=self.fir_window, pass_zero=False, nyq=0.5)) def BSmin(self, fil_dict): self._get_params(fil_dict) N = remezord([self.F_PB, self.F_SB, self.F_SB2, self.F_PB2], [1, 0, 1], [self.A_PB, self.A_SB, self.A_PB2], fs=1, alg=self.alg)[0] self.N = round_odd(N) # enforce odd order if not self._test_N(): return -1 self.fir_window = calc_window_function(self.win_dict, self.fir_window_name, N=self.N, sym=True) fil_dict['F_C'] = (self.F_SB + self.F_PB ) / 2 # use average of calculated F_PB and F_SB fil_dict['F_C2'] = (self.F_SB2 + self.F_PB2 ) / 2 # use average of calculated F_PB and F_SB self._save( fil_dict, self.firwin(self.N, [fil_dict['F_C'], fil_dict['F_C2']], window=self.fir_window, pass_zero=True, nyq=0.5)) def BSman(self, fil_dict): self._get_params(fil_dict) self.N = round_odd(self.N) # enforce odd order if not self._test_N(): return -1 self.fir_window = calc_window_function(self.win_dict, self.fir_window_name, N=self.N, sym=True) self._save( fil_dict, self.firwin(self.N, [fil_dict['F_C'], fil_dict['F_C2']], window=self.fir_window, pass_zero=True, nyq=0.5)) #------------------------------------------------------------------------------ def show_fft_win(self): """ Pop-up FFT window """ if self.but_fft_win.isChecked(): qstyle_widget(self.but_fft_win, "changed") else: qstyle_widget(self.but_fft_win, "normal") if self.fft_window is None: # no handle to the window? Create a new instance if self.but_fft_win.isChecked(): # important: Handle to window must be class attribute # pass the name of the dictionary where parameters are stored and # whether a symmetric window or one that can be continued periodically # will be constructed self.fft_window = Plot_FFT_win(self, win_dict=self.win_dict, sym=True, title="pyFDA FIR Window Viewer") self.sig_tx.connect(self.fft_window.sig_rx) self.fft_window.sig_tx.connect(self.close_fft_win) self.fft_window.show( ) # modeless i.e. non-blocking popup window else: if not self.but_fft_win.isChecked(): if self.fft_window is None: logger.warning("FFT window is already closed!") else: self.fft_window.close() def close_fft_win(self): self.fft_window = None self.but_fft_win.setChecked(False) qstyle_widget(self.but_fft_win, "normal")
class PlotImpz_UI(QWidget): """ Create the UI for the PlotImpz class """ # incoming: not implemented at the moment, update_N is triggered directly # by plot_impz # sig_rx = pyqtSignal(object) # outgoing: from various UI elements to PlotImpz ('ui_changed':'xxx') sig_tx = pyqtSignal(object) # outgoing to local fft window sig_tx_fft = pyqtSignal(object) def __init__(self, parent): """ Pass instance `parent` of parent class (FilterCoeffs) """ super(PlotImpz_UI, self).__init__(parent) """ Intitialize the widget, consisting of: - top chkbox row - coefficient table - two bottom rows with action buttons """ # initial settings self.N_start = 0 self.N_user = 0 self.N = 0 # time self.plt_time_resp = "Stem" self.plt_time_stim = "None" self.plt_time_stmq = "None" self.plt_time_spgr = "None" self.bottom_t = -80 # initial value for log. scale (time) self.nfft_spgr_time = 256 # number of fft points per spectrogram segment self.ovlp_spgr_time = 128 # number of overlap points between spectrogram segments self.mode_spgr_time = "magnitude" # stimuli self.stim = "Impulse" self.chirp_method = 'Linear' self.noise = "None" self.f1 = 0.02 self.f2 = 0.03 self.A1 = 1.0 self.A2 = 0.0 self.phi1 = self.phi2 = 0 self.noi = 0.1 self.noise = 'none' self.DC = 0.0 self.stim_formula = "A1 * abs(sin(2 * pi * f1 * n))" # frequency self.plt_freq_resp = "Line" self.plt_freq_stim = "None" self.plt_freq_stmq = "None" self.bottom_f = -120 # initial value for log. scale self.param = None # dictionary for fft window settings self.win_dict = fb.fil[0]['win_fft'] self.fft_window = None # handle for FFT window pop-up widget self.window_name = "Rectangular" self._construct_UI() self._enable_stim_widgets() self.update_N(emit=False) # also updates window function self._update_noi() def _construct_UI(self): # ----------- --------------------------------------------------- # Run control widgets # --------------------------------------------------------------- self.chk_auto_run = QCheckBox("Auto", self) self.chk_auto_run.setObjectName("chk_auto_run") self.chk_auto_run.setToolTip("<span>Update response automatically when " "parameters have been changed.</span>") self.chk_auto_run.setChecked(True) self.but_run = QPushButton(self) self.but_run.setText("RUN") self.but_run.setToolTip("Run simulation") self.but_run.setEnabled(not self.chk_auto_run.isChecked()) self.cmb_sim_select = QComboBox(self) self.cmb_sim_select.addItems(["Float","Fixpoint"]) qset_cmb_box(self.cmb_sim_select, "Float") self.cmb_sim_select.setToolTip("<span>Simulate floating-point or fixpoint response." "</span>") self.lbl_N_points = QLabel(to_html("N", frmt='bi') + " =", self) self.led_N_points = QLineEdit(self) self.led_N_points.setText(str(self.N)) self.led_N_points.setToolTip("<span>Number of displayed data points. " "<i>N</i> = 0 tries to choose for you.</span>") self.lbl_N_start = QLabel(to_html("N_0", frmt='bi') + " =", self) self.led_N_start = QLineEdit(self) self.led_N_start.setText(str(self.N_start)) self.led_N_start.setToolTip("<span>First point to plot.</span>") self.chk_fx_scale = QCheckBox("Int. scale", self) self.chk_fx_scale.setObjectName("chk_fx_scale") self.chk_fx_scale.setToolTip("<span>Display data with integer (fixpoint) scale.</span>") self.chk_fx_scale.setChecked(False) self.chk_stim_options = QCheckBox("Stim. Options", self) self.chk_stim_options.setObjectName("chk_stim_options") self.chk_stim_options.setToolTip("<span>Show stimulus options.</span>") self.chk_stim_options.setChecked(True) self.but_fft_win = QPushButton(self) self.but_fft_win.setText("WIN FFT") self.but_fft_win.setToolTip('<span> time and frequency response of FFT Window ' '(can be modified in the "Frequency" tab)</span>') self.but_fft_win.setCheckable(True) self.but_fft_win.setChecked(False) layH_ctrl_run = QHBoxLayout() layH_ctrl_run.addWidget(self.but_run) #layH_ctrl_run.addWidget(self.lbl_sim_select) layH_ctrl_run.addWidget(self.cmb_sim_select) layH_ctrl_run.addWidget(self.chk_auto_run) layH_ctrl_run.addStretch(1) layH_ctrl_run.addWidget(self.lbl_N_start) layH_ctrl_run.addWidget(self.led_N_start) layH_ctrl_run.addStretch(1) layH_ctrl_run.addWidget(self.lbl_N_points) layH_ctrl_run.addWidget(self.led_N_points) layH_ctrl_run.addStretch(2) layH_ctrl_run.addWidget(self.chk_fx_scale) layH_ctrl_run.addStretch(2) layH_ctrl_run.addWidget(self.chk_stim_options) layH_ctrl_run.addStretch(2) layH_ctrl_run.addWidget(self.but_fft_win) layH_ctrl_run.addStretch(10) #layH_ctrl_run.setContentsMargins(*params['wdg_margins']) self.wdg_ctrl_run = QWidget(self) self.wdg_ctrl_run.setLayout(layH_ctrl_run) # --- end of run control ---------------------------------------- # ----------- --------------------------------------------------- # Controls for time domain # --------------------------------------------------------------- plot_styles_list = ["None","Dots","Line","Line*","Stem","Stem*","Step","Step*"] lbl_plt_time_title = QLabel("<b>View:</b>", self) self.lbl_plt_time_stim = QLabel(to_html("Stimulus x", frmt='bi'), self) self.cmb_plt_time_stim = QComboBox(self) self.cmb_plt_time_stim.addItems(plot_styles_list) qset_cmb_box(self.cmb_plt_time_stim, self.plt_time_stim) self.cmb_plt_time_stim.setToolTip("<span>Plot style for stimulus.</span>") self.lbl_plt_time_stmq = QLabel(to_html(" Fixp. Stim. x_Q", frmt='bi'), self) self.cmb_plt_time_stmq = QComboBox(self) self.cmb_plt_time_stmq.addItems(plot_styles_list) qset_cmb_box(self.cmb_plt_time_stmq, self.plt_time_stmq) self.cmb_plt_time_stmq.setToolTip("<span>Plot style for <em>fixpoint</em> (quantized) stimulus.</span>") lbl_plt_time_resp = QLabel(to_html(" Response y", frmt='bi'), self) self.cmb_plt_time_resp = QComboBox(self) self.cmb_plt_time_resp.addItems(plot_styles_list) qset_cmb_box(self.cmb_plt_time_resp, self.plt_time_resp) self.cmb_plt_time_resp.setToolTip("<span>Plot style for response.</span>") lbl_win_time = QLabel(to_html(" FFT Window", frmt='bi'), self) self.chk_win_time = QCheckBox(self) self.chk_win_time.setObjectName("chk_win_time") self.chk_win_time.setToolTip('<span>Show FFT windowing function (can be modified in the "Frequency" tab).</span>') self.chk_win_time.setChecked(False) lbl_log_time = QLabel(to_html("dB", frmt='b'), self) self.chk_log_time = QCheckBox(self) self.chk_log_time.setObjectName("chk_log_time") self.chk_log_time.setToolTip("<span>Logarithmic scale for y-axis.</span>") self.chk_log_time.setChecked(False) self.lbl_log_bottom_time = QLabel(to_html("min =", frmt='bi'), self) self.lbl_log_bottom_time.setVisible(True) self.led_log_bottom_time = QLineEdit(self) self.led_log_bottom_time.setText(str(self.bottom_t)) self.led_log_bottom_time.setToolTip("<span>Minimum display value for time " "and spectrogram plots with log. scale.</span>") self.led_log_bottom_time.setVisible(True) lbl_plt_time_spgr = QLabel(to_html(" Spectrogram", frmt='bi'), self) self.cmb_plt_time_spgr = QComboBox(self) self.cmb_plt_time_spgr.addItems(["None", "x[n]", "x_q[n]", "y[n]"]) qset_cmb_box(self.cmb_plt_time_spgr, self.plt_time_spgr) self.cmb_plt_time_spgr.setToolTip("<span>Show Spectrogram for selected signal.</span>") spgr_en = self.plt_time_spgr != "None" self.lbl_log_spgr_time = QLabel(to_html(" dB", frmt='b'), self) self.lbl_log_spgr_time.setVisible(spgr_en) self.chk_log_spgr_time = QCheckBox(self) self.chk_log_spgr_time.setObjectName("chk_log_spgr") self.chk_log_spgr_time.setToolTip("<span>Logarithmic scale for spectrogram.</span>") self.chk_log_spgr_time.setChecked(True) self.chk_log_spgr_time.setVisible(spgr_en) self.lbl_nfft_spgr_time = QLabel(to_html(" N_FFT =", frmt='bi'), self) self.lbl_nfft_spgr_time.setVisible(spgr_en) self.led_nfft_spgr_time = QLineEdit(self) self.led_nfft_spgr_time.setText(str(self.nfft_spgr_time)) self.led_nfft_spgr_time.setToolTip("<span>Number of FFT points per spectrogram segment.</span>") self.led_nfft_spgr_time.setVisible(spgr_en) self.lbl_ovlp_spgr_time = QLabel(to_html(" N_OVLP =", frmt='bi'), self) self.lbl_ovlp_spgr_time.setVisible(spgr_en) self.led_ovlp_spgr_time = QLineEdit(self) self.led_ovlp_spgr_time.setText(str(self.ovlp_spgr_time)) self.led_ovlp_spgr_time.setToolTip("<span>Number of overlap data points between spectrogram segments.</span>") self.led_ovlp_spgr_time.setVisible(spgr_en) self.lbl_mode_spgr_time = QLabel(to_html(" Mode", frmt='bi'), self) self.lbl_mode_spgr_time.setVisible(spgr_en) self.cmb_mode_spgr_time = QComboBox(self) spgr_modes = [("PSD","psd"), ("Mag.","magnitude"),\ ("Angle","angle"), ("Phase","phase")] for i in spgr_modes: self.cmb_mode_spgr_time.addItem(*i) qset_cmb_box(self.cmb_mode_spgr_time, self.mode_spgr_time, data=True) self.cmb_mode_spgr_time.setToolTip("<span>Spectrogram display mode.</span>") self.cmb_mode_spgr_time.setVisible(spgr_en) self.lbl_byfs_spgr_time = QLabel(to_html(" per f_S", frmt='b'), self) self.lbl_byfs_spgr_time.setVisible(spgr_en) self.chk_byfs_spgr_time = QCheckBox(self) self.chk_byfs_spgr_time.setObjectName("chk_log_spgr") self.chk_byfs_spgr_time.setToolTip("<span>Display spectral density i.e. scale by f_S</span>") self.chk_byfs_spgr_time.setChecked(True) self.chk_byfs_spgr_time.setVisible(spgr_en) # self.lbl_colorbar_time = QLabel(to_html(" Col.bar", frmt='b'), self) # self.lbl_colorbar_time.setVisible(spgr_en) # self.chk_colorbar_time = QCheckBox(self) # self.chk_colorbar_time.setObjectName("chk_colorbar_time") # self.chk_colorbar_time.setToolTip("<span>Enable colorbar</span>") # self.chk_colorbar_time.setChecked(True) # self.chk_colorbar_time.setVisible(spgr_en) self.chk_fx_limits = QCheckBox("Min/max.", self) self.chk_fx_limits.setObjectName("chk_fx_limits") self.chk_fx_limits.setToolTip("<span>Display limits of fixpoint range.</span>") self.chk_fx_limits.setChecked(False) layH_ctrl_time = QHBoxLayout() layH_ctrl_time.addWidget(lbl_plt_time_title) layH_ctrl_time.addStretch(1) layH_ctrl_time.addWidget(self.lbl_plt_time_stim) layH_ctrl_time.addWidget(self.cmb_plt_time_stim) # layH_ctrl_time.addWidget(self.lbl_plt_time_stmq) layH_ctrl_time.addWidget(self.cmb_plt_time_stmq) # layH_ctrl_time.addWidget(lbl_plt_time_resp) layH_ctrl_time.addWidget(self.cmb_plt_time_resp) # layH_ctrl_time.addWidget(lbl_win_time) layH_ctrl_time.addWidget(self.chk_win_time) layH_ctrl_time.addStretch(1) layH_ctrl_time.addWidget(lbl_log_time) layH_ctrl_time.addWidget(self.chk_log_time) layH_ctrl_time.addWidget(self.lbl_log_bottom_time) layH_ctrl_time.addWidget(self.led_log_bottom_time) # layH_ctrl_time.addStretch(1) # layH_ctrl_time.addWidget(lbl_plt_time_spgr) layH_ctrl_time.addWidget(self.cmb_plt_time_spgr) layH_ctrl_time.addWidget(self.lbl_log_spgr_time) layH_ctrl_time.addWidget(self.chk_log_spgr_time) layH_ctrl_time.addWidget(self.lbl_nfft_spgr_time) layH_ctrl_time.addWidget(self.led_nfft_spgr_time) layH_ctrl_time.addWidget(self.lbl_ovlp_spgr_time) layH_ctrl_time.addWidget(self.led_ovlp_spgr_time) layH_ctrl_time.addWidget(self.lbl_mode_spgr_time) layH_ctrl_time.addWidget(self.cmb_mode_spgr_time) layH_ctrl_time.addWidget(self.lbl_byfs_spgr_time) layH_ctrl_time.addWidget(self.chk_byfs_spgr_time) layH_ctrl_time.addStretch(2) layH_ctrl_time.addWidget(self.chk_fx_limits) layH_ctrl_time.addStretch(10) #layH_ctrl_time.setContentsMargins(*params['wdg_margins']) self.wdg_ctrl_time = QWidget(self) self.wdg_ctrl_time.setLayout(layH_ctrl_time) # ---- end time domain ------------------ # --------------------------------------------------------------- # Controls for frequency domain # --------------------------------------------------------------- lbl_plt_freq_title = QLabel("<b>View:</b>", self) self.lbl_plt_freq_stim = QLabel(to_html("Stimulus X", frmt='bi'), self) self.cmb_plt_freq_stim = QComboBox(self) self.cmb_plt_freq_stim.addItems(plot_styles_list) qset_cmb_box(self.cmb_plt_freq_stim, self.plt_freq_stim) self.cmb_plt_freq_stim.setToolTip("<span>Plot style for stimulus.</span>") self.lbl_plt_freq_stmq = QLabel(to_html(" Fixp. Stim. X_Q", frmt='bi'), self) self.cmb_plt_freq_stmq = QComboBox(self) self.cmb_plt_freq_stmq.addItems(plot_styles_list) qset_cmb_box(self.cmb_plt_freq_stmq, self.plt_freq_stmq) self.cmb_plt_freq_stmq.setToolTip("<span>Plot style for <em>fixpoint</em> (quantized) stimulus.</span>") lbl_plt_freq_resp = QLabel(to_html(" Response Y", frmt='bi'), self) self.cmb_plt_freq_resp = QComboBox(self) self.cmb_plt_freq_resp.addItems(plot_styles_list) qset_cmb_box(self.cmb_plt_freq_resp, self.plt_freq_resp) self.cmb_plt_freq_resp.setToolTip("<span>Plot style for response.</span>") lbl_log_freq = QLabel(to_html("dB", frmt='b'), self) self.chk_log_freq = QCheckBox(self) self.chk_log_freq.setObjectName("chk_log_freq") self.chk_log_freq.setToolTip("<span>Logarithmic scale for y-axis.</span>") self.chk_log_freq.setChecked(True) self.lbl_log_bottom_freq = QLabel(to_html("min =", frmt='bi'), self) self.lbl_log_bottom_freq.setVisible(self.chk_log_freq.isChecked()) self.led_log_bottom_freq = QLineEdit(self) self.led_log_bottom_freq.setText(str(self.bottom_f)) self.led_log_bottom_freq.setToolTip("<span>Minimum display value for log. scale.</span>") self.led_log_bottom_freq.setVisible(self.chk_log_freq.isChecked()) if not self.chk_log_freq.isChecked(): self.bottom_f = 0 lbl_re_im_freq = QLabel(to_html("Re / Im", frmt='b'), self) self.chk_re_im_freq = QCheckBox(self) self.chk_re_im_freq.setObjectName("chk_re_im_freq") self.chk_re_im_freq.setToolTip("<span>Show real and imaginary part of spectrum</span>") self.chk_re_im_freq.setChecked(False) self.lbl_win_fft = QLabel(to_html("Window", frmt='bi'), self) self.cmb_win_fft = QComboBox(self) self.cmb_win_fft.addItems(get_window_names()) self.cmb_win_fft.setToolTip("FFT window type.") qset_cmb_box(self.cmb_win_fft, self.window_name) self.cmb_win_fft_variant = QComboBox(self) self.cmb_win_fft_variant.setToolTip("FFT window variant.") self.cmb_win_fft_variant.setVisible(False) self.lblWinPar1 = QLabel("Param1") self.ledWinPar1 = QLineEdit(self) self.ledWinPar1.setText("1") self.ledWinPar1.setObjectName("ledWinPar1") self.lblWinPar2 = QLabel("Param2") self.ledWinPar2 = QLineEdit(self) self.ledWinPar2.setText("2") self.ledWinPar2.setObjectName("ledWinPar2") self.chk_Hf = QCheckBox(self) self.chk_Hf.setObjectName("chk_Hf") self.chk_Hf.setToolTip("<span>Show ideal frequency response, calculated " "from the filter coefficients.</span>") self.chk_Hf.setChecked(False) self.chk_Hf_lbl = QLabel(to_html("H_id (f)", frmt="bi"), self) lbl_show_info_freq = QLabel(to_html("Info", frmt='b'), self) self.chk_show_info_freq = QCheckBox(self) self.chk_show_info_freq.setObjectName("chk_show_info_freq") self.chk_show_info_freq.setToolTip("<span>Show infos about signal power " "and window properties.</span>") self.chk_show_info_freq.setChecked(False) layH_ctrl_freq = QHBoxLayout() layH_ctrl_freq.addWidget(lbl_plt_freq_title) layH_ctrl_freq.addStretch(1) layH_ctrl_freq.addWidget(self.lbl_plt_freq_stim) layH_ctrl_freq.addWidget(self.cmb_plt_freq_stim) # layH_ctrl_freq.addWidget(self.lbl_plt_freq_stmq) layH_ctrl_freq.addWidget(self.cmb_plt_freq_stmq) # layH_ctrl_freq.addWidget(lbl_plt_freq_resp) layH_ctrl_freq.addWidget(self.cmb_plt_freq_resp) # layH_ctrl_freq.addWidget(self.chk_Hf_lbl) layH_ctrl_freq.addWidget(self.chk_Hf) layH_ctrl_freq.addStretch(1) layH_ctrl_freq.addWidget(lbl_log_freq) layH_ctrl_freq.addWidget(self.chk_log_freq) layH_ctrl_freq.addWidget(self.lbl_log_bottom_freq) layH_ctrl_freq.addWidget(self.led_log_bottom_freq) layH_ctrl_freq.addStretch(1) layH_ctrl_freq.addWidget(lbl_re_im_freq) layH_ctrl_freq.addWidget(self.chk_re_im_freq) layH_ctrl_freq.addStretch(2) layH_ctrl_freq.addWidget(self.lbl_win_fft) layH_ctrl_freq.addWidget(self.cmb_win_fft) layH_ctrl_freq.addWidget(self.cmb_win_fft_variant) layH_ctrl_freq.addWidget(self.lblWinPar1) layH_ctrl_freq.addWidget(self.ledWinPar1) layH_ctrl_freq.addWidget(self.lblWinPar2) layH_ctrl_freq.addWidget(self.ledWinPar2) layH_ctrl_freq.addStretch(1) layH_ctrl_freq.addWidget(lbl_show_info_freq) layH_ctrl_freq.addWidget(self.chk_show_info_freq) layH_ctrl_freq.addStretch(10) #layH_ctrl_freq.setContentsMargins(*params['wdg_margins']) self.wdg_ctrl_freq = QWidget(self) self.wdg_ctrl_freq.setLayout(layH_ctrl_freq) # ---- end Frequency Domain ------------------ # --------------------------------------------------------------- # Controls for stimuli # --------------------------------------------------------------- lbl_title_stim = QLabel("<b>Stimulus:</b>", self) self.lblStimulus = QLabel(to_html("Type", frmt='bi'), self) self.cmbStimulus = QComboBox(self) self.cmbStimulus.addItems(["None","Impulse","Step","StepErr","Cos","Sine", "Chirp", "Triang","Saw","Rect","Comb","AM","PM / FM","Formula"]) self.cmbStimulus.setToolTip("Stimulus type.") qset_cmb_box(self.cmbStimulus, self.stim) self.chk_stim_bl = QCheckBox("BL", self) self.chk_stim_bl.setToolTip("<span>The signal is bandlimited to the Nyquist frequency " "to avoid aliasing. However, it is much slower to generate " "than the regular version.</span>") self.chk_stim_bl.setChecked(True) self.chk_stim_bl.setObjectName("stim_bl") self.cmbChirpMethod = QComboBox(self) for t in [("Lin","Linear"),("Square","Quadratic"),("Log", "Logarithmic"), ("Hyper", "Hyperbolic")]: self.cmbChirpMethod.addItem(*t) qset_cmb_box(self.cmbChirpMethod, self.chirp_method, data=False) self.chk_scale_impz_f = QCheckBox("Scale", self) self.chk_scale_impz_f.setToolTip("<span>Scale the FFT of the impulse response with <i>N<sub>FFT</sub></i> " "so that it has the same magnitude as |H(f)|. DC and Noise need to be " "turned off.</span>") self.chk_scale_impz_f.setChecked(True) self.chk_scale_impz_f.setObjectName("scale_impz_f") self.lblDC = QLabel(to_html("DC =", frmt='bi'), self) self.ledDC = QLineEdit(self) self.ledDC.setText(str(self.DC)) self.ledDC.setToolTip("DC Level") self.ledDC.setObjectName("stimDC") layHCmbStim = QHBoxLayout() layHCmbStim.addWidget(self.cmbStimulus) layHCmbStim.addWidget(self.chk_stim_bl) layHCmbStim.addWidget(self.chk_scale_impz_f) layHCmbStim.addWidget(self.cmbChirpMethod) #---------------------------------------------- self.lblAmp1 = QLabel(to_html(" A_1", frmt='bi') + " =", self) self.ledAmp1 = QLineEdit(self) self.ledAmp1.setText(str(self.A1)) self.ledAmp1.setToolTip("Stimulus amplitude, complex values like 3j - 1 are allowed") self.ledAmp1.setObjectName("stimAmp1") self.lblAmp2 = QLabel(to_html(" A_2", frmt='bi') + " =", self) self.ledAmp2 = QLineEdit(self) self.ledAmp2.setText(str(self.A2)) self.ledAmp2.setToolTip("Stimulus amplitude 2, complex values like 3j - 1 are allowed") self.ledAmp2.setObjectName("stimAmp2") #---------------------------------------------- self.lblPhi1 = QLabel(to_html(" φ_1", frmt='bi') + " =", self) self.ledPhi1 = QLineEdit(self) self.ledPhi1.setText(str(self.phi1)) self.ledPhi1.setToolTip("Stimulus phase") self.ledPhi1.setObjectName("stimPhi1") self.lblPhU1 = QLabel(to_html("°", frmt='b'), self) self.lblPhi2 = QLabel(to_html(" φ_2", frmt='bi') + " =", self) self.ledPhi2 = QLineEdit(self) self.ledPhi2.setText(str(self.phi2)) self.ledPhi2.setToolTip("Stimulus phase 2") self.ledPhi2.setObjectName("stimPhi2") self.lblPhU2 = QLabel(to_html("°", frmt='b'), self) #---------------------------------------------- self.lblFreq1 = QLabel(to_html(" f_1", frmt='bi') + " =", self) self.ledFreq1 = QLineEdit(self) self.ledFreq1.setText(str(self.f1)) self.ledFreq1.setToolTip("Stimulus frequency 1") self.ledFreq1.setObjectName("stimFreq1") self.lblFreqUnit1 = QLabel("f_S", self) self.lblFreq2 = QLabel(to_html(" f_2", frmt='bi') + " =", self) self.ledFreq2 = QLineEdit(self) self.ledFreq2.setText(str(self.f2)) self.ledFreq2.setToolTip("Stimulus frequency 2") self.ledFreq2.setObjectName("stimFreq2") self.lblFreqUnit2 = QLabel("f_S", self) #---------------------------------------------- self.lblNoise = QLabel(to_html(" Noise", frmt='bi'), self) self.cmbNoise = QComboBox(self) self.cmbNoise.addItems(["None","Gauss","Uniform","PRBS"]) self.cmbNoise.setToolTip("Type of additive noise.") qset_cmb_box(self.cmbNoise, self.noise) self.lblNoi = QLabel("not initialized", self) self.ledNoi = QLineEdit(self) self.ledNoi.setText(str(self.noi)) self.ledNoi.setToolTip("not initialized") self.ledNoi.setObjectName("stimNoi") layGStim = QGridLayout() layGStim.addWidget(self.lblStimulus, 0, 0) layGStim.addWidget(self.lblDC, 1, 0) layGStim.addLayout(layHCmbStim, 0, 1) layGStim.addWidget(self.ledDC, 1, 1) layGStim.addWidget(self.lblAmp1, 0, 2) layGStim.addWidget(self.lblAmp2, 1, 2) layGStim.addWidget(self.ledAmp1, 0, 3) layGStim.addWidget(self.ledAmp2, 1, 3) layGStim.addWidget(self.lblPhi1, 0, 4) layGStim.addWidget(self.lblPhi2, 1, 4) layGStim.addWidget(self.ledPhi1, 0, 5) layGStim.addWidget(self.ledPhi2, 1, 5) layGStim.addWidget(self.lblPhU1, 0, 6) layGStim.addWidget(self.lblPhU2, 1, 6) layGStim.addWidget(self.lblFreq1, 0, 7) layGStim.addWidget(self.lblFreq2, 1, 7) layGStim.addWidget(self.ledFreq1, 0, 8) layGStim.addWidget(self.ledFreq2, 1, 8) layGStim.addWidget(self.lblFreqUnit1, 0, 9) layGStim.addWidget(self.lblFreqUnit2, 1, 9) layGStim.addWidget(self.lblNoise, 0, 10) layGStim.addWidget(self.lblNoi, 1, 10) layGStim.addWidget(self.cmbNoise, 0, 11) layGStim.addWidget(self.ledNoi, 1, 11) #---------------------------------------------- self.lblStimFormula = QLabel(to_html("x =", frmt='bi'), self) self.ledStimFormula = QLineEdit(self) self.ledStimFormula.setText(str(self.stim_formula)) self.ledStimFormula.setToolTip("<span>Enter formula for stimulus in numexpr syntax" "</span>") self.ledStimFormula.setObjectName("stimFormula") layH_ctrl_stim_formula = QHBoxLayout() layH_ctrl_stim_formula.addWidget(self.lblStimFormula) layH_ctrl_stim_formula.addWidget(self.ledStimFormula,10) #---------------------------------------------- #layG_ctrl_stim = QGridLayout() layH_ctrl_stim_par = QHBoxLayout() layH_ctrl_stim_par.addLayout(layGStim) layV_ctrl_stim = QVBoxLayout() layV_ctrl_stim.addLayout(layH_ctrl_stim_par) layV_ctrl_stim.addLayout(layH_ctrl_stim_formula) layH_ctrl_stim = QHBoxLayout() layH_ctrl_stim.addWidget(lbl_title_stim) layH_ctrl_stim.addStretch(1) layH_ctrl_stim.addLayout(layV_ctrl_stim) layH_ctrl_stim.addStretch(10) self.wdg_ctrl_stim = QWidget(self) self.wdg_ctrl_stim.setLayout(layH_ctrl_stim) # --------- end stimuli --------------------------------- # frequency widgets require special handling as they are scaled with f_s self.ledFreq1.installEventFilter(self) self.ledFreq2.installEventFilter(self) #---------------------------------------------------------------------- # LOCAL SIGNALS & SLOTs #---------------------------------------------------------------------- # --- run control --- self.led_N_start.editingFinished.connect(self.update_N) self.led_N_points.editingFinished.connect(self.update_N) # --- frequency control --- # careful! currentIndexChanged passes the current index to _update_win_fft self.cmb_win_fft.currentIndexChanged.connect(self._update_win_fft) self.ledWinPar1.editingFinished.connect(self._read_param1) self.ledWinPar2.editingFinished.connect(self._read_param2) # --- stimulus control --- self.chk_stim_options.clicked.connect(self._show_stim_options) self.chk_stim_bl.clicked.connect(self._enable_stim_widgets) self.cmbStimulus.currentIndexChanged.connect(self._enable_stim_widgets) self.cmbNoise.currentIndexChanged.connect(self._update_noi) self.ledNoi.editingFinished.connect(self._update_noi) self.ledAmp1.editingFinished.connect(self._update_amp1) self.ledAmp2.editingFinished.connect(self._update_amp2) self.ledPhi1.editingFinished.connect(self._update_phi1) self.ledPhi2.editingFinished.connect(self._update_phi2) self.cmbChirpMethod.currentIndexChanged.connect(self._update_chirp_method) self.ledDC.editingFinished.connect(self._update_DC) self.ledStimFormula.editingFinished.connect(self._update_stim_formula) #------------------------------------------------------------------------------ def eventFilter(self, source, event): """ Filter all events generated by the monitored widgets. Source and type of all events generated by monitored objects are passed to this eventFilter, evaluated and passed on to the next hierarchy level. - When a QLineEdit widget gains input focus (``QEvent.FocusIn``), display the stored value from filter dict with full precision - When a key is pressed inside the text field, set the `spec_edited` flag to True. - When a QLineEdit widget loses input focus (``QEvent.FocusOut``), store current value normalized to f_S with full precision (only if ``spec_edited == True``) and display the stored value in selected format """ def _store_entry(source): if self.spec_edited: if source.objectName() == "stimFreq1": self.f1 = safe_eval(source.text(), self.f1 * fb.fil[0]['f_S'], return_type='float') / fb.fil[0]['f_S'] source.setText(str(params['FMT'].format(self.f1 * fb.fil[0]['f_S']))) elif source.objectName() == "stimFreq2": self.f2 = safe_eval(source.text(), self.f2 * fb.fil[0]['f_S'], return_type='float') / fb.fil[0]['f_S'] source.setText(str(params['FMT'].format(self.f2 * fb.fil[0]['f_S']))) self.spec_edited = False # reset flag self.sig_tx.emit({'sender':__name__, 'ui_changed':'stim'}) # if isinstance(source, QLineEdit): # if source.objectName() in {"stimFreq1","stimFreq2"}: if event.type() in {QEvent.FocusIn,QEvent.KeyPress, QEvent.FocusOut}: if event.type() == QEvent.FocusIn: self.spec_edited = False self.load_fs() elif event.type() == QEvent.KeyPress: self.spec_edited = True # entry has been changed key = event.key() if key in {Qt.Key_Return, Qt.Key_Enter}: _store_entry(source) elif key == Qt.Key_Escape: # revert changes self.spec_edited = False if source.objectName() == "stimFreq1": source.setText(str(params['FMT'].format(self.f1 * fb.fil[0]['f_S']))) elif source.objectName() == "stimFreq2": source.setText(str(params['FMT'].format(self.f2 * fb.fil[0]['f_S']))) elif event.type() == QEvent.FocusOut: _store_entry(source) # Call base class method to continue normal event processing: return super(PlotImpz_UI, self).eventFilter(source, event) #------------------------------------------------------------- def _show_stim_options(self): """ Hide / show panel with stimulus options """ self.wdg_ctrl_stim.setVisible(self.chk_stim_options.isChecked()) def _enable_stim_widgets(self): """ Enable / disable widgets depending on the selected stimulus""" self.stim = qget_cmb_box(self.cmbStimulus, data=False) f1_en = self.stim in {"Cos","Sine","Chirp","PM / FM","AM","Formula","Rect","Saw","Triang","Comb"} f2_en = self.stim in {"Cos","Sine","Chirp","PM / FM","AM","Formula"} dc_en = self.stim not in {"Step", "StepErr"} self.chk_stim_bl.setVisible(self.stim in {"Triang", "Saw", "Rect"}) self.lblAmp1.setVisible(self.stim != "None") self.ledAmp1.setVisible(self.stim != "None") self.chk_scale_impz_f.setVisible(self.stim == 'Impulse') self.chk_scale_impz_f.setEnabled((self.noi == 0 or self.cmbNoise.currentText() == 'None')\ and self.DC == 0) self.cmbChirpMethod.setVisible(self.stim == 'Chirp') self.lblPhi1.setVisible(f1_en) self.ledPhi1.setVisible(f1_en) self.lblPhU1.setVisible(f1_en) self.lblFreq1.setVisible(f1_en) self.ledFreq1.setVisible(f1_en) self.lblFreqUnit1.setVisible(f1_en) self.lblFreq2.setVisible(f2_en) self.ledFreq2.setVisible(f2_en) self.lblFreqUnit2.setVisible(f2_en) self.lblAmp2.setVisible(f2_en and self.stim != "Chirp") self.ledAmp2.setVisible(f2_en and self.stim != "Chirp") self.lblPhi2.setVisible(f2_en and self.stim != "Chirp") self.ledPhi2.setVisible(f2_en and self.stim != "Chirp") self.lblPhU2.setVisible(f2_en and self.stim != "Chirp") self.lblDC.setVisible(dc_en) self.ledDC.setVisible(dc_en) self.lblStimFormula.setVisible(self.stim == "Formula") self.ledStimFormula.setVisible(self.stim == "Formula") self.sig_tx.emit({'sender':__name__, 'ui_changed':'stim'}) #------------------------------------------------------------- def load_fs(self): """ Reload sampling frequency from filter dictionary and transform the displayed frequency spec input fields according to the units setting (i.e. f_S). Spec entries are always stored normalized w.r.t. f_S in the dictionary; when f_S or the unit are changed, only the displayed values of the frequency entries are updated, not the dictionary! load_fs() is called during init and when the frequency unit or the sampling frequency have been changed. It should be called when sigSpecsChanged or sigFilterDesigned is emitted at another place, indicating that a reload is required. """ # recalculate displayed freq spec values for (maybe) changed f_S if self.ledFreq1.hasFocus(): # widget has focus, show full precision self.ledFreq1.setText(str(self.f1 * fb.fil[0]['f_S'])) elif self.ledFreq2.hasFocus(): # widget has focus, show full precision self.ledFreq2.setText(str(self.f2 * fb.fil[0]['f_S'])) else: # widgets have no focus, round the display self.ledFreq1.setText( str(params['FMT'].format(self.f1 * fb.fil[0]['f_S']))) self.ledFreq2.setText( str(params['FMT'].format(self.f2 * fb.fil[0]['f_S']))) def _update_amp1(self): """ Update value for self.A1 from QLineEditWidget""" self.A1 = safe_eval(self.ledAmp1.text(), self.A1, return_type='cmplx') self.ledAmp1.setText(str(self.A1)) self.sig_tx.emit({'sender':__name__, 'ui_changed':'a1'}) def _update_amp2(self): """ Update value for self.A2 from the QLineEditWidget""" self.A2 = safe_eval(self.ledAmp2.text(), self.A2, return_type='cmplx') self.ledAmp2.setText(str(self.A2)) self.sig_tx.emit({'sender':__name__, 'ui_changed':'a2'}) def _update_phi1(self): """ Update value for self.phi1 from QLineEditWidget""" self.phi1 = safe_eval(self.ledPhi1.text(), self.phi1, return_type='float') self.ledPhi1.setText(str(self.phi1)) self.sig_tx.emit({'sender':__name__, 'ui_changed':'phi1'}) def _update_phi2(self): """ Update value for self.phi2 from the QLineEditWidget""" self.phi2 = safe_eval(self.ledPhi2.text(), self.phi2, return_type='float') self.ledPhi2.setText(str(self.phi2)) self.sig_tx.emit({'sender':__name__, 'ui_changed':'phi2'}) def _update_chirp_method(self): """ Update value for self.chirp_method from the QLineEditWidget""" self.chirp_method = qget_cmb_box(self.cmbChirpMethod) # read current data string self.sig_tx.emit({'sender':__name__, 'ui_changed':'chirp_method'}) def _update_noi(self): """ Update type + value + label for self.noi for noise""" self.noise = qget_cmb_box(self.cmbNoise, data=False).lower() self.lblNoi.setVisible(self.noise!='none') self.ledNoi.setVisible(self.noise!='none') if self.noise!='none': self.noi = safe_eval(self.ledNoi.text(), 0, return_type='cmplx') self.ledNoi.setText(str(self.noi)) if self.noise == 'gauss': self.lblNoi.setText(to_html(" σ =", frmt='bi')) self.ledNoi.setToolTip("<span>Standard deviation of statistical process," "noise power is <i>P</i> = σ<sup>2</sup></span>") elif self.noise == 'uniform': self.lblNoi.setText(to_html(" Δ =", frmt='bi')) self.ledNoi.setToolTip("<span>Interval size for uniformly distributed process " "(e.g. quantization step size for quantization noise), " "centered around 0. Noise power is " "<i>P</i> = Δ<sup>2</sup>/12.</span>") elif self.noise == 'prbs': self.lblNoi.setText(to_html(" A =", frmt='bi')) self.ledNoi.setToolTip("<span>Amplitude of bipolar Pseudorandom Binary Sequence. " "Noise power is <i>P</i> = A<sup>2</sup>.</span>") self.sig_tx.emit({'sender':__name__, 'ui_changed':'noi'}) def _update_DC(self): """ Update value for self.DC from the QLineEditWidget""" self.DC = safe_eval(self.ledDC.text(), 0, return_type='cmplx') self.ledDC.setText(str(self.DC)) self.sig_tx.emit({'sender':__name__, 'ui_changed':'dc'}) def _update_stim_formula(self): """Update string with formula to be evaluated by numexpr""" self.stim_formula = self.ledStimFormula.text().strip() self.ledStimFormula.setText(str(self.stim_formula)) self.sig_tx.emit({'sender':__name__, 'ui_changed':'stim_formula'}) # ------------------------------------------------------------------------- def update_N(self, emit=True): # called directly from impz or locally # between local triggering and updates upstream """ Update values for self.N and self.N_start from the QLineEditWidget, update the window and fire "ui_changed" """ if not isinstance(emit, bool): logger.error("update N: emit={0}".format(emit)) self.N_start = safe_eval(self.led_N_start.text(), self.N_start, return_type='int', sign='poszero') self.led_N_start.setText(str(self.N_start)) # update widget self.N_user = safe_eval(self.led_N_points.text(), self.N_user, return_type='int', sign='poszero') if self.N_user == 0: # automatic calculation self.N = self.calc_n_points(self.N_user) # widget remains set to 0 self.led_N_points.setText("0") # update widget else: self.N = self.N_user self.led_N_points.setText(str(self.N)) # update widget self.N_end = self.N + self.N_start # total number of points to be calculated: N + N_start # FFT window needs to be updated due to changed number of data points self._update_win_fft(emit=False) # don't emit anything here if emit: self.sig_tx.emit({'sender':__name__, 'ui_changed':'N'}) def _read_param1(self): """Read out textbox when editing is finished and update dict and fft window""" param = safe_eval(self.ledWinPar1.text(), self.win_dict['par'][0]['val'], return_type='float') if param < self.win_dict['par'][0]['min']: param = self.win_dict['par'][0]['min'] elif param > self.win_dict['par'][0]['max']: param = self.win_dict['par'][0]['max'] self.ledWinPar1.setText(str(param)) self.win_dict['par'][0]['val'] = param self._update_win_fft() def _read_param2(self): """Read out textbox when editing is finished and update dict and fft window""" param = safe_eval(self.ledWinPar2.text(), self.win_dict['par'][1]['val'], return_type='float') if param < self.win_dict['par'][1]['min']: param = self.win_dict['par'][1]['min'] elif param > self.win_dict['par'][1]['max']: param = self.win_dict['par'][1]['max'] self.ledWinPar2.setText(str(param)) self.win_dict['par'][1]['val'] = param self._update_win_fft() #------------------------------------------------------------------------------ def _update_win_fft(self, arg=None, emit=True): """ Update window type for FFT with different arguments: - signal-slot connection to combo-box -> index (int), absorbed by `arg` emit is not set -> emit=True - called by _read_param() -> empty -> emit=True - called by update_N(emit=False) """ if not isinstance(emit, bool): logger.error("update win: emit={0}".format(emit)) self.window_name = qget_cmb_box(self.cmb_win_fft, data=False) self.win = calc_window_function(self.win_dict, self.window_name, N=self.N, sym=False) n_par = self.win_dict['n_par'] self.lblWinPar1.setVisible(n_par > 0) self.ledWinPar1.setVisible(n_par > 0) self.lblWinPar2.setVisible(n_par > 1) self.ledWinPar2.setVisible(n_par > 1) if n_par > 0: self.lblWinPar1.setText(to_html(self.win_dict['par'][0]['name'] + " =", frmt='bi')) self.ledWinPar1.setText(str(self.win_dict['par'][0]['val'])) self.ledWinPar1.setToolTip(self.win_dict['par'][0]['tooltip']) if n_par > 1: self.lblWinPar2.setText(to_html(self.win_dict['par'][1]['name'] + " =", frmt='bi')) self.ledWinPar2.setText(str(self.win_dict['par'][1]['val'])) self.ledWinPar2.setToolTip(self.win_dict['par'][1]['tooltip']) self.nenbw = self.N * np.sum(np.square(self.win)) / (np.square(np.sum(self.win))) self.cgain = np.sum(self.win) / self.N # coherent gain self.win /= self.cgain # correct gain for periodic signals # only emit a signal for local triggers to prevent infinite loop: # - signal-slot connection passes a bool or an integer # - local function calls don't pass anything if emit is True: self.sig_tx.emit({'sender':__name__, 'ui_changed':'win'}) # ... but always notify the FFT widget via sig_tx_fft self.sig_tx_fft.emit({'sender':__name__, 'view_changed':'win'}) #------------------------------------------------------------------------------ def show_fft_win(self): """ Pop-up FFT window """ if self.but_fft_win.isChecked(): qstyle_widget(self.but_fft_win, "changed") else: qstyle_widget(self.but_fft_win, "normal") if self.fft_window is None: # no handle to the window? Create a new instance if self.but_fft_win.isChecked(): # Important: Handle to window must be class attribute otherwise it # (and the attached window) is deleted immediately when it goes out of scope self.fft_window = Plot_FFT_win(self, win_dict=self.win_dict, sym=False, title="pyFDA Spectral Window Viewer") self.sig_tx_fft.connect(self.fft_window.sig_rx) self.fft_window.sig_tx.connect(self.close_fft_win) self.fft_window.show() # modeless i.e. non-blocking popup window else: if not self.but_fft_win.isChecked(): if self.fft_window is None: logger.warning("FFT window is already closed!") else: self.fft_window.close() def close_fft_win(self): self.fft_window = None self.but_fft_win.setChecked(False) qstyle_widget(self.but_fft_win, "normal") #------------------------------------------------------------------------------ def calc_n_points(self, N_user = 0): """ Calculate number of points to be displayed, depending on type of filter (FIR, IIR) and user input. If the user selects 0 points, the number is calculated automatically. An improvement would be to calculate the dominant pole and the corresponding settling time. """ if N_user == 0: # set number of data points automatically if fb.fil[0]['ft'] == 'IIR': N = 100 else: N = min(len(fb.fil[0]['ba'][0]),100) # FIR: N = number of coefficients (max. 100) else: N = N_user return N
def _construct_UI(self): """ initialize the User Interface """ butClipboard = QPushButton(self) butClipboard.setIcon(QIcon(':/clipboard.svg')) butClipboard.setToolTip("Copy text to clipboard.") butAbout = QPushButton(self) butAbout.setText("About") butAbout.setToolTip("Display 'About' info") butChangelog = QPushButton(self) butChangelog.setText("Changelog") butChangelog.setToolTip("Display changelog") butLicMIT = QPushButton(self) butLicMIT.setText("MIT License") butLicMIT.setToolTip("MIT License for pyFDA source code") butLicGPLv3 = QPushButton(self) butLicGPLv3.setText("GPLv3 License") butLicGPLv3.setToolTip("GPLv3 License for bundled distribution") butClose = QPushButton(self) butClose.setIcon(QIcon(':/circle-x.svg')) butClose.setToolTip("Close Window.") layGButtons = QGridLayout() layGButtons.addWidget(butClipboard, 0, 0) layGButtons.addWidget(butAbout, 0, 1) layGButtons.addWidget(butChangelog, 0, 2) layGButtons.addWidget(butLicMIT, 0, 3) layGButtons.addWidget(butLicGPLv3, 0, 4) layGButtons.addWidget(butClose, 0, 5) lblInfo = QLabel(self) lblInfo.setText(self.info_str) lblInfo.setFixedHeight(lblInfo.height() * 1.2) #lblInfo.setSizePolicy(QSizePolicy.Fixed, QSizePolicy.Fixed) lblInfo.setOpenExternalLinks(True) lblIcon = QLabel(self) lblIcon.setPixmap( QPixmap(':/pyfda_icon.svg').scaledToHeight( lblInfo.height(), Qt.SmoothTransformation)) butClipboard.setFixedWidth(lblInfo.height()) butClose.setFixedWidth(lblInfo.height()) layHInfo = QHBoxLayout() layHInfo.addWidget(lblIcon) layHInfo.addWidget(lblInfo) self.txtDisplay = QTextBrowser(self) self.txtDisplay.setOpenExternalLinks(True) self.display_about_str() self.txtDisplay.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding) #self.txtDisplay.setFixedHeight(self.txtDisplay.width() * 2) layVMain = QVBoxLayout() # layVMain.setAlignment(Qt.AlignTop) # this affects only the first widget (intended here) layVMain.addLayout(layGButtons) layVMain.addLayout(layHInfo) layVMain.addWidget(self.txtDisplay) layVMain.setContentsMargins(*params['wdg_margins_spc']) self.setLayout(layVMain) #self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding) #self.resize(0,0) #self.adjustSize() #QApplication.processEvents() butClipboard.clicked.connect( lambda: self.to_clipboard(self.info_str + self.about_str)) butAbout.clicked.connect(self.display_about_str) butChangelog.clicked.connect(self.display_changelog) butLicMIT.clicked.connect(self.display_MIT_lic) butLicGPLv3.clicked.connect(self.display_GPL_lic) butClose.clicked.connect(self.close)
class Input_Fixpoint_Specs(QWidget): """ Create the widget that holds the dynamically loaded fixpoint filter ui """ # sig_resize = pyqtSignal() # emit a signal when the image has been resized sig_rx_local = pyqtSignal(object) # incoming from subwidgets -> process_sig_rx_local sig_rx = pyqtSignal(object) # incoming, connected to input_tab_widget.sig_rx sig_tx = pyqtSignal(object) # outcgoing from pyfda.libs.pyfda_qt_lib import emit def __init__(self, parent=None): super(Input_Fixpoint_Specs, self).__init__(parent) self.tab_label = 'Fixpoint' self.tool_tip = ("<span>Select a fixpoint implementation for the filter," " simulate it or generate a Verilog netlist.</span>") self.parent = parent self.fx_path = os.path.realpath( os.path.join(dirs.INSTALL_DIR, 'fixpoint_widgets')) self.no_fx_filter_img = os.path.join(self.fx_path, "no_fx_filter.png") if not os.path.isfile(self.no_fx_filter_img): logger.error("Image {0:s} not found!".format(self.no_fx_filter_img)) self.default_fx_img = os.path.join(self.fx_path, "default_fx_img.png") if not os.path.isfile(self.default_fx_img): logger.error("Image {0:s} not found!".format(self.default_fx_img)) self._construct_UI() inst_wdg_list = self._update_filter_cmb() if len(inst_wdg_list) == 0: logger.warning("No fixpoint filter found for this type of filter!") else: logger.debug("Imported {0:d} fixpoint filters:\n{1}" .format(len(inst_wdg_list.split("\n"))-1, inst_wdg_list)) self._update_fixp_widget() # ------------------------------------------------------------------------------ def process_sig_rx_local(self, dict_sig: dict = None) -> None: """ Process signals coming in from input and output quantizer subwidget and the dynamically instantiated subwidget and emit {'fx_sim': 'specs_changed'} in the end. """ if dict_sig['id'] == id(self): logger.warning(f'RX_LOCAL - Stopped infinite loop: "{first_item(dict_sig)}"') return elif 'fx_sim' in dict_sig and dict_sig['fx_sim'] == 'specs_changed': self.wdg_dict2ui() # update wordlengths in UI and set RUN button to 'changed' dict_sig.update({'id': id(self)}) # propagate 'specs_changed' with self 'id' self.emit(dict_sig) return # ---- Process input and output quantizer settings ('ui' in dict_sig) -- elif 'ui' in dict_sig: if 'wdg_name' not in dict_sig: logger.warning(f"No key 'wdg_name' in dict_sig:\n{pprint_log(dict_sig)}") return elif dict_sig['wdg_name'] == 'w_input': """ Input fixpoint format has been changed or butLock has been clicked. When I/O lock is active, copy input fixpoint word format to output word format. """ if dict_sig['ui'] == 'butLock'\ and not self.wdg_w_input.butLock.isChecked(): # butLock was deactivitated, don't do anything return elif self.wdg_w_input.butLock.isChecked(): # but lock was activated or wordlength setting have been changed fb.fil[0]['fxqc']['QO']['WI'] = fb.fil[0]['fxqc']['QI']['WI'] fb.fil[0]['fxqc']['QO']['WF'] = fb.fil[0]['fxqc']['QI']['WF'] fb.fil[0]['fxqc']['QO']['W'] = fb.fil[0]['fxqc']['QI']['W'] elif dict_sig['wdg_name'] == 'w_output': """ Output fixpoint format has been changed. When I/O lock is active, copy output fixpoint word format to input word format. """ if self.wdg_w_input.butLock.isChecked(): fb.fil[0]['fxqc']['QI']['WI'] = fb.fil[0]['fxqc']['QO']['WI'] fb.fil[0]['fxqc']['QI']['WF'] = fb.fil[0]['fxqc']['QO']['WF'] fb.fil[0]['fxqc']['QI']['W'] = fb.fil[0]['fxqc']['QO']['W'] elif dict_sig['wdg_name'] in {'q_output', 'q_input'}: pass else: logger.error("Unknown wdg_name '{0}' in dict_sig:\n{1}" .format(dict_sig['wdg_name'], pprint_log(dict_sig))) return if dict_sig['ui'] not in {'WI', 'WF', 'ovfl', 'quant', 'cmbW', 'butLock'}: logger.warning("Unknown value '{0}' for key 'ui'".format(dict_sig['ui'])) self.wdg_dict2ui() # update wordlengths in UI and set RUN button to 'changed' self.emit({'fx_sim': 'specs_changed'}) # propagate 'specs_changed' else: logger.error(f"Unknown key/value in 'dict_sig':\n{pprint_log(dict_sig)}") # ------------------------------------------------------------------------------ def process_sig_rx(self, dict_sig: dict = None) -> None: """ Process signals coming in via `sig_rx` from other widgets. Trigger fx simulation: 1. ``fx_sim': 'init'``: Start fixpoint simulation by sending 'fx_sim':'start_fx_response_calculation' 2. ``fx_sim_calc_response()``: Receive stimulus from widget in 'fx_sim':'calc_frame_fx_response' and pass it to fixpoint simulation method 3. Store fixpoint response in `fb.fx_result` and return to initiating routine """ # logger.info( # "SIG_RX(): vis={0}\n{1}".format(self.isVisible(), pprint_log(dict_sig))) # logger.debug(f'SIG_RX(): "{first_item(dict_sig)}"') if dict_sig['id'] == id(self): # logger.warning(f'Stopped infinite loop: "{first_item(dict_sig)}"') return elif 'data_changed' in dict_sig and dict_sig['data_changed'] == "filter_designed": # New filter has been designed, update list of available filter topologies self._update_filter_cmb() return elif 'data_changed' in dict_sig or\ ('view_changed' in dict_sig and dict_sig['view_changed'] == 'q_coeff'): # Filter data has changed (but not the filter type) or the coefficient # format / wordlength have been changed in `input_coeffs`. The latter means # the view / display has been changed (wordlength) but not the actual # coefficients in the `input_coeffs` widget. However, the wordlength setting # is copied to the fxqc dict and from there to the fixpoint widget. # - update fields in the fixpoint filter widget - wordlength may have # been changed. # - Set RUN button to "changed" in wdg_dict2ui() self.wdg_dict2ui() # --------------- FX Simulation ------------------------------------------- elif 'fx_sim' in dict_sig: if dict_sig['fx_sim'] == 'init': # fixpoint simulation has been started externally, e.g. by # `impz.impz_init()`, return a handle to the fixpoint filter function # via signal-slot connection if not self.fx_wdg_found: logger.error("No fixpoint widget found!") qstyle_widget(self.butSimFx, "error") self.emit({'fx_sim': 'error'}) elif self.fx_sim_init() != 0: # returned an error qstyle_widget(self.butSimFx, "error") self.emit({'fx_sim': 'error'}) else: self.emit({'fx_sim': 'start_fx_response_calculation', 'fxfilter_func': self.fx_filt_ui.fxfilter}) elif dict_sig['fx_sim'] == 'calc_frame_fx_response': self.fx_sim_calc_response(dict_sig) # return to the routine collecting the response frame by frame return elif dict_sig['fx_sim'] == 'specs_changed': # fixpoint specification have been changed somewhere, update ui # and set run button to "changed" in wdg_dict2ui() self.wdg_dict2ui() elif dict_sig['fx_sim'] == 'finish': qstyle_widget(self.butSimFx, "normal") else: logger.error('Unknown "fx_sim" command option "{0}"\n' '\treceived from "{1}".' .format(dict_sig['fx_sim'], dict_sig['class'])) # ---- resize image when "Fixpoint" tab is selected or widget size is changed: elif 'ui_changed' in dict_sig and dict_sig['ui_changed'] in {'resized', 'tab'}\ and self.isVisible(): self.resize_img() # ------------------------------------------------------------------------------ def _construct_UI(self) -> None: """ Intitialize the main GUI, consisting of: - A combo box to select the filter topology and an image of the topology - The input quantizer - The UI of the fixpoint filter widget - Simulation and export buttons """ # ------------------------------------------------------------------------------ # Define frame and layout for the dynamically updated filter widget # The actual filter widget is instantiated in self.set_fixp_widget() later on self.layH_fx_wdg = QHBoxLayout() # self.layH_fx_wdg.setContentsMargins(*params['wdg_margins']) frmHDL_wdg = QFrame(self) frmHDL_wdg.setLayout(self.layH_fx_wdg) # frmHDL_wdg.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum) # ------------------------------------------------------------------------------ # Initialize fixpoint filter combobox, title and description # ------------------------------------------------------------------------------ self.cmb_fx_wdg = QComboBox(self) self.cmb_fx_wdg.setSizeAdjustPolicy(QComboBox.AdjustToContents) self.lblTitle = QLabel("not set", self) self.lblTitle.setWordWrap(True) self.lblTitle.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed) layHTitle = QHBoxLayout() layHTitle.addWidget(self.cmb_fx_wdg) layHTitle.addWidget(self.lblTitle) self.frmTitle = QFrame(self) self.frmTitle.setLayout(layHTitle) self.frmTitle.setContentsMargins(*params['wdg_margins']) # ------------------------------------------------------------------------------ # Input and Output Quantizer # ------------------------------------------------------------------------------ # - instantiate widgets for input and output quantizer # - pass the quantization (sub-?) dictionary to the constructor # ------------------------------------------------------------------------------ self.wdg_w_input = UI_W(self, q_dict=fb.fil[0]['fxqc']['QI'], wdg_name='w_input', label='', lock_visible=True) self.wdg_w_input.sig_tx.connect(self.process_sig_rx_local) cmb_q = ['round', 'floor', 'fix'] self.wdg_w_output = UI_W(self, q_dict=fb.fil[0]['fxqc']['QO'], wdg_name='w_output', label='') self.wdg_w_output.sig_tx.connect(self.process_sig_rx_local) self.wdg_q_output = UI_Q(self, q_dict=fb.fil[0]['fxqc']['QO'], wdg_name='q_output', label='Output Format <i>Q<sub>Y </sub></i>:', cmb_q=cmb_q, cmb_ov=['wrap', 'sat']) self.wdg_q_output.sig_tx.connect(self.sig_rx_local) if HAS_DS: cmb_q.append('dsm') self.wdg_q_input = UI_Q(self, q_dict=fb.fil[0]['fxqc']['QI'], wdg_name='q_input', label='Input Format <i>Q<sub>X </sub></i>:', cmb_q=cmb_q) self.wdg_q_input.sig_tx.connect(self.sig_rx_local) # Layout and frame for input quantization layVQiWdg = QVBoxLayout() layVQiWdg.addWidget(self.wdg_q_input) layVQiWdg.addWidget(self.wdg_w_input) frmQiWdg = QFrame(self) # frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken) frmQiWdg.setLayout(layVQiWdg) frmQiWdg.setContentsMargins(*params['wdg_margins']) # Layout and frame for output quantization layVQoWdg = QVBoxLayout() layVQoWdg.addWidget(self.wdg_q_output) layVQoWdg.addWidget(self.wdg_w_output) frmQoWdg = QFrame(self) # frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken) frmQoWdg.setLayout(layVQoWdg) frmQoWdg.setContentsMargins(*params['wdg_margins']) # ------------------------------------------------------------------------------ # Dynamically updated image of filter topology (label as placeholder) # ------------------------------------------------------------------------------ # allow setting background color # lbl_fixp_img_palette = QPalette() # lbl_fixp_img_palette.setColor(QPalette(window, Qt: white)) # lbl_fixp_img_palette.setBrush(self.backgroundRole(), QColor(150, 0, 0)) # lbl_fixp_img_palette.setColor(QPalette: WindowText, Qt: blue) self.lbl_fixp_img = QLabel("img not set", self) self.lbl_fixp_img.setAutoFillBackground(True) # self.lbl_fixp_img.setPalette(lbl_fixp_img_palette) # self.lbl_fixp_img.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum) self.embed_fixp_img(self.no_fx_filter_img) layHImg = QHBoxLayout() layHImg.setContentsMargins(0, 0, 0, 0) layHImg.addWidget(self.lbl_fixp_img) # , Qt.AlignCenter) self.frmImg = QFrame(self) self.frmImg.setLayout(layHImg) self.frmImg.setContentsMargins(*params['wdg_margins']) # ------------------------------------------------------------------------------ # Simulation and export Buttons # ------------------------------------------------------------------------------ self.butExportHDL = QPushButton(self) self.butExportHDL.setToolTip( "Create Verilog or VHDL netlist for fixpoint filter.") self.butExportHDL.setText("Create HDL") self.butSimFx = QPushButton(self) self.butSimFx.setToolTip("Start fixpoint simulation.") self.butSimFx.setText("Sim. FX") self.layHHdlBtns = QHBoxLayout() self.layHHdlBtns.addWidget(self.butSimFx) self.layHHdlBtns.addWidget(self.butExportHDL) # This frame encompasses the HDL buttons sim and convert frmHdlBtns = QFrame(self) # frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken) frmHdlBtns.setLayout(self.layHHdlBtns) frmHdlBtns.setContentsMargins(*params['wdg_margins']) # ------------------------------------------------------------------- # Top level layout # ------------------------------------------------------------------- splitter = QSplitter(self) splitter.setOrientation(Qt.Vertical) splitter.addWidget(frmHDL_wdg) splitter.addWidget(frmQoWdg) splitter.addWidget(self.frmImg) # setSizes uses absolute pixel values, but can be "misused" by specifying values # that are way too large: in this case, the space is distributed according # to the _ratio_ of the values: splitter.setSizes([3000, 3000, 5000]) layVMain = QVBoxLayout() layVMain.addWidget(self.frmTitle) layVMain.addWidget(frmHdlBtns) layVMain.addWidget(frmQiWdg) layVMain.addWidget(splitter) layVMain.addStretch() layVMain.setContentsMargins(*params['wdg_margins']) self.setLayout(layVMain) # ---------------------------------------------------------------------- # GLOBAL SIGNALS & SLOTs # ---------------------------------------------------------------------- self.sig_rx.connect(self.process_sig_rx) self.sig_rx_local.connect(self.process_sig_rx_local) # dynamic connection in `self._update_fixp_widget()`: # ----- # if hasattr(self.fx_filt_ui, "sig_rx"): # self.sig_rx.connect(self.fx_filt_ui.sig_rx) # if hasattr(self.fx_filt_ui, "sig_tx"): # self.fx_filt_ui.sig_tx.connect(self.sig_rx_local) # ---- # ---------------------------------------------------------------------- # LOCAL SIGNALS & SLOTs # ---------------------------------------------------------------------- self.cmb_fx_wdg.currentIndexChanged.connect(self._update_fixp_widget) self.butExportHDL.clicked.connect(self.exportHDL) self.butSimFx.clicked.connect(lambda x: self.emit({'fx_sim': 'start'})) # ---------------------------------------------------------------------- # EVENT FILTER # ---------------------------------------------------------------------- # # monitor events and generate sig_resize event when resized # self.lbl_fixp_img.installEventFilter(self) # # ... then redraw image when resized # self.sig_resize.connect(self.resize_img) # ------------------------------------------------------------------------------ def _update_filter_cmb(self) -> str: """ (Re-)Read list of available fixpoint filters for a given filter design every time a new filter design is selected. Then try to import the fixpoint designs in the list and populate the fixpoint implementation combo box `self.cmb_fx_wdg` when successfull. Returns ------- inst_wdg_str: str string with all fixpoint widgets that could be instantiated successfully """ inst_wdg_str = "" # full names of successfully instantiated widgets for logging # remember last fx widget setting: last_fx_wdg = qget_cmb_box(self.cmb_fx_wdg, data=False) self.cmb_fx_wdg.clear() fc = fb.fil[0]['fc'] if 'fix' in fb.filter_classes[fc]: self.cmb_fx_wdg.blockSignals(True) for class_name in fb.filter_classes[fc]['fix']: # get class name try: # construct module + class name ... mod_class_name = fb.fixpoint_classes[class_name]['mod'] + '.'\ + class_name # ... and display name disp_name = fb.fixpoint_classes[class_name]['name'] self.cmb_fx_wdg.addItem(disp_name, mod_class_name) inst_wdg_str += '\t' + class_name + ' : ' + mod_class_name + '\n' except AttributeError as e: logger.warning('Widget "{0}":\n{1}'.format(class_name, e)) self.embed_fixp_img(self.no_fx_filter_img) continue # with next `class_name` of for loop except KeyError as e: logger.warning("No fixpoint filter for filter type {0} available." .format(e)) self.embed_fixp_img(self.no_fx_filter_img) continue # with next `class_name` of for loop # restore last fx widget if possible idx = self.cmb_fx_wdg.findText(last_fx_wdg) # set to idx 0 if not found (returned -1) self.cmb_fx_wdg.setCurrentIndex(max(idx, 0)) self.cmb_fx_wdg.blockSignals(False) else: # no fixpoint widget self.embed_fixp_img(self.no_fx_filter_img) self._update_fixp_widget() return inst_wdg_str # # ------------------------------------------------------------------------------ # def eventFilter(self, source, event): # """ # Filter all events generated by monitored QLabel, only resize events are # processed here, generating a `sig_resize` signal. All other events # are passed on to the next hierarchy level. # """ # if event.type() == QEvent.Resize: # logger.warning("resize event!") # self.sig_resize.emit() # # Call base class method to continue normal event processing: # return super(Input_Fixpoint_Specs, self).eventFilter(source, event) # ------------------------------------------------------------------------------ def embed_fixp_img(self, img_file: str) -> QPixmap: """ Embed `img_file` in png format as `self.img_fixp` Parameters ---------- img_file: str path and file name to image file Returns ------- self.img_fixp: QPixmap object pixmap containing the passed img_file """ if not os.path.isfile(img_file): logger.warning("Image file {0} doesn't exist.".format(img_file)) img_file = self.default_fx_img _, file_extension = os.path.splitext(img_file) if file_extension != '.png': logger.error('Unknown file extension "{0}"!'.format(file_extension)) img_file = self.default_fx_img self.img_fixp = QPixmap(img_file) # logger.warning(f"img_fixp = {img_file}") # logger.warning(f"_embed_fixp_img(): {self.img_fixp.__class__.__name__}") return self.img_fixp # ------------------------------------------------------------------------------ def resize_img(self) -> None: """ Triggered when `self` (the widget) is selected or resized. The method resizes the image inside QLabel to completely fill the label while keeping the aspect ratio. An offset of some pixels is needed, otherwise the image is clipped. """ # logger.warning(f"resize_img(): img_fixp = {self.img_fixp.__class__.__name__}") if self.parent is None: # parent is QApplication, has no width or height par_w, par_h = 300, 700 # fixed size for module level test else: # widget parent is InputTabWidget() par_w, par_h = self.parent.width(), self.parent.height() img_w, img_h = self.img_fixp.width(), self.img_fixp.height() if img_w > 10: max_h = int(max(np.floor(img_h * par_w/img_w) - 5, 20)) else: max_h = 200 logger.debug("img size: {0},{1}, frm size: {2},{3}, max_h: {4}" .format(img_w, img_h, par_w, par_h, max_h)) # The following doesn't work because the width of the parent widget can grow # with the image size # img_scaled = self.img_fixp.scaled(self.lbl_fixp_img.size(), # Qt.KeepAspectRatio, Qt.SmoothTransformation) img_scaled = self.img_fixp.scaledToHeight(max_h, Qt.SmoothTransformation) self.lbl_fixp_img.setPixmap(img_scaled) # ------------------------------------------------------------------------------ def _update_fixp_widget(self): """ This method is called at the initialization of the widget and when a new fixpoint filter implementation is selected from the combo box: - Destruct old instance of fixpoint filter widget `self.fx_filt_ui` - Import and instantiate new fixpoint filter widget e.g. after changing the filter topology as - Try to load image for filter topology - Update the UI of the widget - Try to instantiate HDL filter as `self.fx_filt_ui.fixp_filter` with dummy data - emit {'fx_sim': 'specs_changed'} when successful """ def _disable_fx_wdg(self) -> None: if hasattr(self, "fx_filt_ui") and self.fx_filt_ui is not None: # is a fixpoint widget loaded? try: # try to remove widget from layout self.layH_fx_wdg.removeWidget(self.fx_filt_ui) # delete QWidget when scope has been left self.fx_filt_ui.deleteLater() except AttributeError as e: logger.error("Destructing UI failed!\n{0}".format(e)) self.fx_wdg_found = False self.butSimFx.setEnabled(False) self.butExportHDL.setVisible(False) # self.layH_fx_wdg.setVisible(False) self.img_fixp = self.embed_fixp_img(self.no_fx_filter_img) self.resize_img() self.lblTitle.setText("") self.fx_filt_ui = None # ----------------------------------------------------------- _disable_fx_wdg(self) # destruct old fixpoint widget instance: # instantiate new fixpoint widget class as self.fx_filt_ui cmb_wdg_fx_cur = qget_cmb_box(self.cmb_fx_wdg, data=False) if cmb_wdg_fx_cur: # at least one valid fixpoint widget found self.fx_wdg_found = True # get list [module name and path, class name] fx_mod_class_name = qget_cmb_box(self.cmb_fx_wdg, data=True).rsplit('.', 1) fx_mod = importlib.import_module(fx_mod_class_name[0]) # get module fx_filt_ui_class = getattr(fx_mod, fx_mod_class_name[1]) # get class logger.info("Instantiating new FX widget\n\t" f"{fx_mod.__name__}.{fx_filt_ui_class.__name__}") # ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ self.fx_filt_ui = fx_filt_ui_class() # instantiate the fixpoint widget # ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ # and add it to layout: self.layH_fx_wdg.addWidget(self.fx_filt_ui, stretch=1) self.fx_filt_ui.setVisible(True) self.wdg_dict2ui() # initialize the fixpoint subwidgets from the fxqc_dict # ---- connect signals to fx_filt_ui ---- if hasattr(self.fx_filt_ui, "sig_rx"): self.sig_rx.connect(self.fx_filt_ui.sig_rx) if hasattr(self.fx_filt_ui, "sig_tx"): self.fx_filt_ui.sig_tx.connect(self.sig_rx_local) # ---- get name of new fixpoint filter image ---- if not (hasattr(self.fx_filt_ui, "img_name") and self.fx_filt_ui.img_name): # no image name defined, use default image img_file = self.default_fx_img else: # get path of imported fixpoint widget ... file_path = os.path.dirname(fx_mod.__file__) # ... and construct full image name from it img_file = os.path.join(file_path, self.fx_filt_ui.img_name) # ---- instantiate and scale graphic of filter topology ---- self.embed_fixp_img(img_file) self.resize_img() # ---- set title and description for filter self.lblTitle.setText(self.fx_filt_ui.title) # Check which methods the fixpoint widget provides and enable # corresponding buttons: self.butExportHDL.setVisible(hasattr(self.fx_filt_ui, "to_hdl")) self.butSimFx.setEnabled(hasattr(self.fx_filt_ui, "fxfilter")) self.update_fxqc_dict() self.emit({'fx_sim': 'specs_changed'}) # ------------------------------------------------------------------------------ def wdg_dict2ui(self): """ Trigger an update of the fixpoint widget UI when view (i.e. fixpoint coefficient format) or data have been changed outside this class. Additionally, pass the fixpoint quantization widget to update / restore other subwidget settings. Set the RUN button to "changed". """ # fb.fil[0]['fxqc']['QCB'].update({'scale':(1 << fb.fil[0]['fxqc']['QCB']['W'])}) self.wdg_q_input.dict2ui(fb.fil[0]['fxqc']['QI']) self.wdg_q_output.dict2ui(fb.fil[0]['fxqc']['QO']) self.wdg_w_input.dict2ui(fb.fil[0]['fxqc']['QI']) self.wdg_w_output.dict2ui(fb.fil[0]['fxqc']['QO']) if self.fx_wdg_found and hasattr(self.fx_filt_ui, "dict2ui"): self.fx_filt_ui.dict2ui() # dict_sig = {'fx_sim':'specs_changed'} # self.emit(dict_sig) qstyle_widget(self.butSimFx, "changed") # ------------------------------------------------------------------------------ def update_fxqc_dict(self): """ Update the fxqc dictionary before simulation / HDL generation starts. """ if self.fx_wdg_found: # get a dict with the coefficients and fixpoint settings from fixpoint widget if hasattr(self.fx_filt_ui, "ui2dict"): fb.fil[0]['fxqc'].update(self.fx_filt_ui.ui2dict()) logger.debug("update fxqc: \n{0}".format(pprint_log(fb.fil[0]['fxqc']))) else: logger.error("No fixpoint widget found!") # ------------------------------------------------------------------------------ def exportHDL(self): """ Synthesize HDL description of filter """ dlg = QFD(self) # instantiate file dialog object file_types = "Verilog (*.v)" # needed for overwrite confirmation when name is entered without suffix: dlg.setDefaultSuffix('v') dlg.setWindowTitle('Export Verilog') dlg.setNameFilter(file_types) dlg.setDirectory(dirs.save_dir) # set mode "save file" instead "open file": dlg.setAcceptMode(QFD.AcceptSave) dlg.setOption(QFD.DontConfirmOverwrite, False) if dlg.exec_() == QFD.Accepted: hdl_file = qstr(dlg.selectedFiles()[0]) # hdl_type = extract_file_ext(qstr(dlg.selectedNameFilter()))[0] # ============================================================================= # # static method getSaveFileName_() is simple but unflexible # hdl_file, hdl_filter = dlg.getSaveFileName_( # caption="Save Verilog netlist as (this also defines the module name)", # directory=dirs.save_dir, filter=file_types) # hdl_file = qstr(hdl_file) # if hdl_file != "": # "operation cancelled" returns an empty string # # return '.v' or '.vhd' depending on filetype selection: # # hdl_type = extract_file_ext(qstr(hdl_filter))[0] # # sanitized dir + filename + suffix. The filename suffix is replaced # # by `v` later. # hdl_file = os.path.normpath(hdl_file) # complete path + file name # ============================================================================= hdl_dir_name = os.path.dirname(hdl_file) # extract the directory path if not os.path.isdir(hdl_dir_name): # create directory if it doesn't exist os.mkdir(hdl_dir_name) dirs.save_dir = hdl_dir_name # make this directory the new default / base dir hdl_file_name = os.path.splitext(os.path.basename(hdl_file))[0] hdl_full_name = os.path.join(hdl_dir_name, hdl_file_name + ".v") # remove all non-alphanumeric chars: vlog_mod_name = re.sub(r'\W+', '', hdl_file_name).lower() logger.info('Creating hdl_file "{0}"\n\twith top level module "{1}"' .format(hdl_full_name, vlog_mod_name)) try: self.update_fxqc_dict() self.fx_filt_ui.construct_fixp_filter() code = self.fx_filt_ui.to_hdl(name=vlog_mod_name) # logger.info(str(code)) # print verilog code to console with io.open(hdl_full_name, 'w', encoding="utf8") as f: f.write(str(code)) logger.info("HDL conversion finished!") except (IOError, TypeError) as e: logger.warning(e) # -------------------------------------------------------------------------- def fx_sim_init(self): """ Initialize fix-point simulation: - Update the `fxqc_dict` containing all quantization information - Setup a filter instance for fixpoint simulation - Request a stimulus signal Returns ------- error: int 0 for sucessful fx widget construction, -1 for error """ try: self.update_fxqc_dict() self.fx_filt_ui.init_filter() # setup filter instance return 0 except ValueError as e: logger.error('Fixpoint stimulus generation failed during "init"' '\nwith "{0} "'.format(e)) return -1 # ------------------------------------------------------------------------------ def fx_sim_calc_response(self, dict_sig) -> None: """ - Read fixpoint stimulus from `dict_sig` in integer format - Pass it to the fixpoint filter which calculates the fixpoint response - Store the result in `fb.fx_results` and return. In case of an error, `fb.fx_results == None` Returns ------- None """ try: # logger.info( # 'Simulate fixpoint frame with "{0}" stimulus:\n\t{1}'.format( # dict_sig['class'], # pprint_log(dict_sig['fx_stimulus'], tab=" "), # )) # Run fixpoint simulation and store the results as integer values: fb.fx_results = self.fx_filt_ui.fxfilter(dict_sig['fx_stimulus']) if len(fb.fx_results) == 0: logger.error("Fixpoint simulation returned empty results!") # else: # # logger.debug("fx_results: {0}"\ # # .format(pprint_log(fb.fx_results, tab= " "))) # logger.info( # f'Fixpoint simulation successful for dict\n{pprint_log(dict_sig)}' # f'\tStimuli: Shape {np.shape(dict_sig["fx_stimulus"])}' # f' of type "{dict_sig["fx_stimulus"].dtype}"' # f'\n\tResponse: Shape {np.shape(fb.fx_results)}' # f' of type "{type(fb.fx_results).__name__} "' # f' ("{type(fb.fx_results[0]).__name__}")' # ) except ValueError as e: logger.error("Simulator error {0}".format(e)) fb.fx_results = None except AssertionError as e: logger.error('Fixpoint simulation failed for dict\n{0}' '\twith msg. "{1}"\n\tStimuli: Shape {2} of type "{3}"' '\n\tResponse: Shape {4} of type "{5}"'.format( pprint_log(dict_sig), e, np.shape(dict_sig['fx_stimulus']), dict_sig['fx_stimulus'].dtype, np.shape(fb.fx_results), type(fb.fx_results) )) fb.fx_results = None if fb.fx_results is None: qstyle_widget(self.butSimFx, "error") else: pass # everything ok, return # logger.debug("Sending fixpoint results") return
class Plot_Tran_Stim_UI(QWidget): """ Create the UI for the PlotImpz class """ # incoming: sig_rx = pyqtSignal(object) # outgoing: from various UI elements to PlotImpz ('ui_changed':'xxx') sig_tx = pyqtSignal(object) # outgoing: to fft related widgets (FFT window widget, qfft_win_select) sig_tx_fft = pyqtSignal(object) from pyfda.libs.pyfda_qt_lib import emit # ------------------------------------------------------------------------------ def process_sig_rx(self, dict_sig=None): """ Process signals coming from - FFT window widget - qfft_win_select """ logger.warning("PROCESS_SIG_RX - vis: {0}\n{1}".format( self.isVisible(), pprint_log(dict_sig))) if 'id' in dict_sig and dict_sig['id'] == id(self): logger.warning("Stopped infinite loop:\n{0}".format( pprint_log(dict_sig))) return elif 'view_changed' in dict_sig: if dict_sig['view_changed'] == 'f_S': self.recalc_freqs() # ------------------------------------------------------------------------------ def __init__(self): super().__init__() """ Intitialize the widget, consisting of: - top chkbox row - coefficient table - two bottom rows with action buttons """ # initial settings self.N_FFT = 0 # TODO: FFT value needs to be passed here somehow? # stimuli self.cmb_stim_item = "impulse" self.cmb_stim_periodic_item = 'square' self.stim = "dirac" self.impulse_type = 'dirac' self.sinusoid_type = 'sine' self.chirp_type = 'linear' self.modulation_type = 'am' self.noise = "None" self.f1 = 0.02 self.f2 = 0.03 self.A1 = 1.0 self.A2 = 0.0 self.phi1 = self.phi2 = 0 self.T1 = self.T2 = 0 self.TW1 = self.TW2 = 1 self.BW1 = self.BW2 = 0.5 self.noi = 0.1 self.noise = 'none' self.DC = 0.0 self.stim_formula = "A1 * abs(sin(2 * pi * f1 * n))" self.stim_par1 = 0.5 self.scale_impz = 1 # optional energy scaling for impulses # self.bottom_f = -120 # initial value for log. scale # self.param = None # dictionaries with widgets needed for the various stimuli self.stim_wdg_dict = collections.OrderedDict() self.stim_wdg_dict.update({ "none": {"dc", "noise"}, "dirac": {"dc", "a1", "T1", "norm", "noise"}, "sinc": {"dc", "a1", "a2", "T1", "T2", "f1", "f2", "norm", "noise"}, "gauss": { "dc", "a1", "a2", "T1", "T2", "f1", "f2", "BW1", "BW2", "norm", "noise" }, "rect": {"dc", "a1", "T1", "TW1", "norm", "noise"}, "step": {"a1", "T1", "noise"}, "cos": {"dc", "a1", "a2", "phi1", "phi2", "f1", "f2", "noise"}, "sine": {"dc", "a1", "a2", "phi1", "phi2", "f1", "f2", "noise"}, "exp": {"dc", "a1", "a2", "phi1", "phi2", "f1", "f2", "noise"}, "diric": {"dc", "a1", "phi1", "T1", "TW1", "f1", "noise"}, "chirp": {"dc", "a1", "phi1", "f1", "f2", "T2", "noise"}, "triang": {"dc", "a1", "phi1", "f1", "noise", "bl"}, "saw": {"dc", "a1", "phi1", "f1", "noise", "bl"}, "square": {"dc", "a1", "phi1", "f1", "noise", "bl", "par1"}, "comb": {"dc", "a1", "phi1", "f1", "noise"}, "am": {"dc", "a1", "a2", "phi1", "phi2", "f1", "f2", "noise"}, "pmfm": {"dc", "a1", "a2", "phi1", "phi2", "f1", "f2", "noise"}, "formula": { "dc", "a1", "a2", "phi1", "phi2", "f1", "f2", "BW1", "BW2", "noise" } }) # combobox tooltip + data / text / tooltip for stimulus category items self.cmb_stim_items = [ ("<span>Stimulus category.</span>"), ("none", "None", "<span>Only noise and DC can be selected.</span>"), ("impulse", "Impulse", "<span>Different impulses</span>"), ("step", "Step", "<span>Calculate step response and its error.</span>"), ("sinusoid", "Sinusoid", "<span>Sinusoidal waveforms</span>"), ("chirp", "Chirp", "<span>Different frequency sweeps.</span>"), ("periodic", "Periodic", "<span>Periodic functions with discontinuities, " "either band-limited or with aliasing.</span>"), ("modulation", "Modulat.", "<span>Modulated waveforms.</span>"), ("formula", "Formula", "<span>Formula defined stimulus.</span>") ] # combobox tooltip + data / text / tooltip for periodic signals items self.cmb_stim_periodic_items = [ "<span>Periodic functions with discontinuities.</span>", ("square", "Square", "<span>Square signal with duty cycle α</span>"), ("saw", "Saw", "Sawtooth signal"), ("triang", "Triang", "Triangular signal"), ("comb", "Comb", "Comb signal") ] # combobox tooltip + data / text / tooltip for chirp signals items self.cmb_stim_chirp_items = [ "<span>Type of frequency sweep from <i>f</i><sub>1</sub> @ <i>t</i> = 0 to " "<i>f</i><sub>2</sub> @ t = <i>T</i><sub>2</sub>.</span>", ("linear", "Lin", "Linear frequency sweep"), ("quadratic", "Square", "Quadratic frequency sweep"), ("logarithmic", "Log", "Logarithmic frequency sweep"), ("hyperbolic", "Hyper", "Hyperbolic frequency sweep") ] self.cmb_stim_impulse_items = [ "<span>Different aperiodic impulse forms</span>", ("dirac", "Dirac", "<span>Discrete-time dirac impulse for simulating impulse and " "frequency response.</span>"), ("gauss", "Gauss", "<span>Gaussian pulse with bandpass spectrum and controllable " "relative -6 dB bandwidth.</span>"), ("sinc", "Sinc", "<span>Sinc pulse with rectangular baseband spectrum</span>"), ("rect", "Rect", "<span>Rectangular pulse with sinc-shaped spectrum</span>") ] self.cmb_stim_sinusoid_items = [ "Sinusoidal or similar signals", ("sine", "Sine", "Sine signal"), ("cos", "Cos", "Cosine signal"), ("exp", "Exp", "Complex exponential"), ("diric", "Sinc", "<span>Periodic Sinc (Dirichlet function)</span>") ] # data / text / tooltip for noise stimulus combobox. self.cmb_stim_noise_items = [ "Type of additive noise.", ("none", "None", ""), ("gauss", "Gauss", "<span>Normal- or Gauss-distributed process with std. deviation σ." "</span>"), ("uniform", "Uniform", "<span>Uniformly distributed process in the range ± Δ/2." "</span>"), ("prbs", "PRBS", "<span>Pseudo-Random Binary Sequence with values ± A.</span>" ), ("mls", "MLS", "<span>Maximum Length Sequence with values ± A. The sequence is " "always the same as the state is not stored for the next sequence start." "</span>"), ("brownian", "Brownian", "<span>Brownian (cumulated sum) process based on Gaussian noise with" " std. deviation σ.</span>") ] self._construct_UI() self._enable_stim_widgets() self._update_noi() def _construct_UI(self): # ===================================================================== # Controls for stimuli # ===================================================================== self.cmbStimulus = QComboBox(self) qcmb_box_populate(self.cmbStimulus, self.cmb_stim_items, self.cmb_stim_item) self.lblStimPar1 = QLabel(to_html("α =", frmt='b'), self) self.ledStimPar1 = QLineEdit(self) self.ledStimPar1.setText("0.5") self.ledStimPar1.setToolTip("Duty Cycle, 0 ... 1") self.ledStimPar1.setObjectName("ledStimPar1") self.but_stim_bl = QPushButton(self) self.but_stim_bl.setText("BL") self.but_stim_bl.setToolTip( "<span>Bandlimit the signal to the Nyquist " "frequency to avoid aliasing. However, this is much slower " "to calculate especially for a large number of points.</span>") self.but_stim_bl.setMaximumWidth(qtext_width(text="BL ")) self.but_stim_bl.setCheckable(True) self.but_stim_bl.setChecked(True) self.but_stim_bl.setObjectName("stim_bl") # ------------------------------------- self.cmbChirpType = QComboBox(self) qcmb_box_populate(self.cmbChirpType, self.cmb_stim_chirp_items, self.chirp_type) self.cmbImpulseType = QComboBox(self) qcmb_box_populate(self.cmbImpulseType, self.cmb_stim_impulse_items, self.impulse_type) self.cmbSinusoidType = QComboBox(self) qcmb_box_populate(self.cmbSinusoidType, self.cmb_stim_sinusoid_items, self.sinusoid_type) self.cmbPeriodicType = QComboBox(self) qcmb_box_populate(self.cmbPeriodicType, self.cmb_stim_periodic_items, self.cmb_stim_periodic_item) self.cmbModulationType = QComboBox(self) for t in [("AM", "am"), ("PM / FM", "pmfm")]: # text, data self.cmbModulationType.addItem(*t) qset_cmb_box(self.cmbModulationType, self.modulation_type, data=True) # ------------------------------------- self.chk_step_err = QPushButton("Error", self) self.chk_step_err.setToolTip( "<span>Display the step response error.</span>") self.chk_step_err.setMaximumWidth(qtext_width(text="Error ")) self.chk_step_err.setCheckable(True) self.chk_step_err.setChecked(False) self.chk_step_err.setObjectName("stim_step_err") layHCmbStim = QHBoxLayout() layHCmbStim.addWidget(self.cmbStimulus) layHCmbStim.addWidget(self.cmbImpulseType) layHCmbStim.addWidget(self.cmbSinusoidType) layHCmbStim.addWidget(self.cmbChirpType) layHCmbStim.addWidget(self.cmbPeriodicType) layHCmbStim.addWidget(self.cmbModulationType) layHCmbStim.addWidget(self.but_stim_bl) layHCmbStim.addWidget(self.lblStimPar1) layHCmbStim.addWidget(self.ledStimPar1) layHCmbStim.addWidget(self.chk_step_err) self.lblDC = QLabel(to_html("DC =", frmt='bi'), self) self.ledDC = QLineEdit(self) self.ledDC.setText(str(self.DC)) self.ledDC.setToolTip("DC Level") self.ledDC.setObjectName("stimDC") layHStimDC = QHBoxLayout() layHStimDC.addWidget(self.lblDC) layHStimDC.addWidget(self.ledDC) # ====================================================================== self.lblAmp1 = QLabel(to_html(" A_1", frmt='bi') + " =", self) self.ledAmp1 = QLineEdit(self) self.ledAmp1.setText(str(self.A1)) self.ledAmp1.setToolTip( "Stimulus amplitude, complex values like 3j - 1 are allowed") self.ledAmp1.setObjectName("stimAmp1") self.lblAmp2 = QLabel(to_html(" A_2", frmt='bi') + " =", self) self.ledAmp2 = QLineEdit(self) self.ledAmp2.setText(str(self.A2)) self.ledAmp2.setToolTip( "Stimulus amplitude 2, complex values like 3j - 1 are allowed") self.ledAmp2.setObjectName("stimAmp2") # ---------------------------------------------- self.lblPhi1 = QLabel(to_html(" φ_1", frmt='bi') + " =", self) self.ledPhi1 = QLineEdit(self) self.ledPhi1.setText(str(self.phi1)) self.ledPhi1.setToolTip("Stimulus phase") self.ledPhi1.setObjectName("stimPhi1") self.lblPhU1 = QLabel(to_html("°", frmt='b'), self) self.lblPhi2 = QLabel(to_html(" φ_2", frmt='bi') + " =", self) self.ledPhi2 = QLineEdit(self) self.ledPhi2.setText(str(self.phi2)) self.ledPhi2.setToolTip("Stimulus phase 2") self.ledPhi2.setObjectName("stimPhi2") self.lblPhU2 = QLabel(to_html("°", frmt='b'), self) # ---------------------------------------------- self.lbl_T1 = QLabel(to_html(" T_1", frmt='bi') + " =", self) self.led_T1 = QLineEdit(self) self.led_T1.setText(str(self.T1)) self.led_T1.setToolTip("Time shift") self.led_T1.setObjectName("stimT1") self.lbl_TU1 = QLabel(to_html("T_S", frmt='b'), self) self.lbl_T2 = QLabel(to_html(" T_2", frmt='bi') + " =", self) self.led_T2 = QLineEdit(self) self.led_T2.setText(str(self.T2)) self.led_T2.setToolTip("Time shift 2") self.led_T2.setObjectName("stimT2") self.lbl_TU2 = QLabel(to_html("T_S", frmt='b'), self) # --------------------------------------------- self.lbl_TW1 = QLabel( to_html(" ΔT_1", frmt='bi') + " =", self) self.led_TW1 = QLineEdit(self) self.led_TW1.setText(str(self.TW1)) self.led_TW1.setToolTip("Time width") self.led_TW1.setObjectName("stimTW1") self.lbl_TWU1 = QLabel(to_html("T_S", frmt='b'), self) self.lbl_TW2 = QLabel( to_html(" ΔT_2", frmt='bi') + " =", self) self.led_TW2 = QLineEdit(self) self.led_TW2.setText(str(self.TW2)) self.led_TW2.setToolTip("Time width 2") self.led_TW2.setObjectName("stimTW2") self.lbl_TWU2 = QLabel(to_html("T_S", frmt='b'), self) # ---------------------------------------------- self.txtFreq1_f = to_html(" f_1", frmt='bi') + " =" self.txtFreq1_k = to_html(" k_1", frmt='bi') + " =" self.lblFreq1 = QLabel(self.txtFreq1_f, self) self.ledFreq1 = QLineEdit(self) self.ledFreq1.setText(str(self.f1)) self.ledFreq1.setToolTip("Stimulus frequency") self.ledFreq1.setObjectName("stimFreq1") self.lblFreqUnit1 = QLabel("f_S", self) self.txtFreq2_f = to_html(" f_2", frmt='bi') + " =" self.txtFreq2_k = to_html(" k_2", frmt='bi') + " =" self.lblFreq2 = QLabel(self.txtFreq2_f, self) self.ledFreq2 = QLineEdit(self) self.ledFreq2.setText(str(self.f2)) self.ledFreq2.setToolTip("Stimulus frequency 2") self.ledFreq2.setObjectName("stimFreq2") self.lblFreqUnit2 = QLabel("f_S", self) # ---------------------------------------------- self.lbl_BW1 = QLabel( to_html(self.tr(" BW_1"), frmt='bi') + " =", self) self.led_BW1 = QLineEdit(self) self.led_BW1.setText(str(self.BW1)) self.led_BW1.setToolTip(self.tr("Relative bandwidth")) self.led_BW1.setObjectName("stimBW1") self.lbl_BW2 = QLabel( to_html(self.tr(" BW_2"), frmt='bi') + " =", self) self.led_BW2 = QLineEdit(self) self.led_BW2.setText(str(self.BW2)) self.led_BW2.setToolTip(self.tr("Relative bandwidth 2")) self.led_BW2.setObjectName("stimBW2") # ---------------------------------------------- self.lblNoise = QLabel(to_html(" Noise", frmt='bi'), self) self.cmbNoise = QComboBox(self) qcmb_box_populate(self.cmbNoise, self.cmb_stim_noise_items, self.noise) self.lblNoi = QLabel("not initialized", self) self.ledNoi = QLineEdit(self) self.ledNoi.setText(str(self.noi)) self.ledNoi.setToolTip("not initialized") self.ledNoi.setObjectName("stimNoi") layGStim = QGridLayout() layGStim.addLayout(layHCmbStim, 0, 1) layGStim.addLayout(layHStimDC, 1, 1) layGStim.addWidget(self.lblAmp1, 0, 2) layGStim.addWidget(self.lblAmp2, 1, 2) layGStim.addWidget(self.ledAmp1, 0, 3) layGStim.addWidget(self.ledAmp2, 1, 3) layGStim.addWidget(self.lblPhi1, 0, 4) layGStim.addWidget(self.lblPhi2, 1, 4) layGStim.addWidget(self.ledPhi1, 0, 5) layGStim.addWidget(self.ledPhi2, 1, 5) layGStim.addWidget(self.lblPhU1, 0, 6) layGStim.addWidget(self.lblPhU2, 1, 6) layGStim.addWidget(self.lbl_T1, 0, 7) layGStim.addWidget(self.lbl_T2, 1, 7) layGStim.addWidget(self.led_T1, 0, 8) layGStim.addWidget(self.led_T2, 1, 8) layGStim.addWidget(self.lbl_TU1, 0, 9) layGStim.addWidget(self.lbl_TU2, 1, 9) layGStim.addWidget(self.lbl_TW1, 0, 10) layGStim.addWidget(self.lbl_TW2, 1, 10) layGStim.addWidget(self.led_TW1, 0, 11) layGStim.addWidget(self.led_TW2, 1, 11) layGStim.addWidget(self.lbl_TWU1, 0, 12) layGStim.addWidget(self.lbl_TWU2, 1, 12) layGStim.addWidget(self.lblFreq1, 0, 13) layGStim.addWidget(self.lblFreq2, 1, 13) layGStim.addWidget(self.ledFreq1, 0, 14) layGStim.addWidget(self.ledFreq2, 1, 14) layGStim.addWidget(self.lblFreqUnit1, 0, 15) layGStim.addWidget(self.lblFreqUnit2, 1, 15) layGStim.addWidget(self.lbl_BW1, 0, 16) layGStim.addWidget(self.lbl_BW2, 1, 16) layGStim.addWidget(self.led_BW1, 0, 17) layGStim.addWidget(self.led_BW2, 1, 17) layGStim.addWidget(self.lblNoise, 0, 18) layGStim.addWidget(self.lblNoi, 1, 18) layGStim.addWidget(self.cmbNoise, 0, 19) layGStim.addWidget(self.ledNoi, 1, 19) # ---------------------------------------------- self.lblStimFormula = QLabel(to_html("x =", frmt='bi'), self) self.ledStimFormula = QLineEdit(self) self.ledStimFormula.setText(str(self.stim_formula)) self.ledStimFormula.setToolTip( "<span>Enter formula for stimulus in numexpr syntax.</span>") self.ledStimFormula.setObjectName("stimFormula") layH_stim_formula = QHBoxLayout() layH_stim_formula.addWidget(self.lblStimFormula) layH_stim_formula.addWidget(self.ledStimFormula, 10) # ---------------------------------------------------------------------- # Main Widget # ---------------------------------------------------------------------- layH_stim_par = QHBoxLayout() layH_stim_par.addLayout(layGStim) layV_stim = QVBoxLayout() layV_stim.addLayout(layH_stim_par) layV_stim.addLayout(layH_stim_formula) layH_stim = QHBoxLayout() layH_stim.addLayout(layV_stim) layH_stim.addStretch(10) self.wdg_stim = QWidget(self) self.wdg_stim.setLayout(layH_stim) self.wdg_stim.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Minimum) # ---------------------------------------------------------------------- # Event Filter # ---------------------------------------------------------------------- # frequency related widgets are scaled with f_s, requiring special handling self.ledFreq1.installEventFilter(self) self.ledFreq2.installEventFilter(self) self.led_T1.installEventFilter(self) self.led_T2.installEventFilter(self) self.led_TW1.installEventFilter(self) self.led_TW2.installEventFilter(self) # ---------------------------------------------------------------------- # GLOBAL SIGNALS & SLOTs # ---------------------------------------------------------------------- self.sig_rx.connect(self.process_sig_rx) # ---------------------------------------------------------------------- # LOCAL SIGNALS & SLOTs # ---------------------------------------------------------------------- # --- stimulus control --- self.but_stim_bl.clicked.connect(self._enable_stim_widgets) self.chk_step_err.clicked.connect(self._enable_stim_widgets) self.cmbStimulus.currentIndexChanged.connect(self._enable_stim_widgets) self.cmbNoise.currentIndexChanged.connect(self._update_noi) self.ledNoi.editingFinished.connect(self._update_noi) self.ledAmp1.editingFinished.connect(self._update_amp1) self.ledAmp2.editingFinished.connect(self._update_amp2) self.ledPhi1.editingFinished.connect(self._update_phi1) self.ledPhi2.editingFinished.connect(self._update_phi2) self.led_BW1.editingFinished.connect(self._update_BW1) self.led_BW2.editingFinished.connect(self._update_BW2) self.cmbImpulseType.currentIndexChanged.connect( self._update_impulse_type) self.cmbSinusoidType.currentIndexChanged.connect( self._update_sinusoid_type) self.cmbChirpType.currentIndexChanged.connect(self._update_chirp_type) self.cmbPeriodicType.currentIndexChanged.connect( self._update_periodic_type) self.cmbModulationType.currentIndexChanged.connect( self._update_modulation_type) self.ledDC.editingFinished.connect(self._update_DC) self.ledStimFormula.editingFinished.connect(self._update_stim_formula) self.ledStimPar1.editingFinished.connect(self._update_stim_par1) # ------------------------------------------------------------------------------ def update_freq_units(self): """ Update labels referrring to frequency specs """ if fb.fil[0]['freq_specs_unit'] == 'k': f_unit = '' t_unit = '' self.lblFreq1.setText(self.txtFreq1_k) self.lblFreq2.setText(self.txtFreq2_k) else: f_unit = fb.fil[0]['plt_fUnit'] t_unit = fb.fil[0]['plt_tUnit'].replace(r"$\mu$", "μ") self.lblFreq1.setText(self.txtFreq1_f) self.lblFreq2.setText(self.txtFreq2_f) if f_unit in {"f_S", "f_Ny"}: unit_frmt = "i" # italic else: unit_frmt = None # don't print units like kHz in italic self.lblFreqUnit1.setText(to_html(f_unit, frmt=unit_frmt)) self.lblFreqUnit2.setText(to_html(f_unit, frmt=unit_frmt)) self.lbl_TU1.setText(to_html(t_unit, frmt=unit_frmt)) self.lbl_TU2.setText(to_html(t_unit, frmt=unit_frmt)) # ------------------------------------------------------------------------------ def eventFilter(self, source, event): """ Filter all events generated by the monitored widgets (ledFreq1 and 2 and T1 / T2). Source and type of all events generated by monitored objects are passed to this eventFilter, evaluated and passed on to the next hierarchy level. - When a QLineEdit widget gains input focus (``QEvent.FocusIn``), display the stored value from filter dict with full precision - When a key is pressed inside the text field, set the `spec_edited` flag to True. - When a QLineEdit widget loses input focus (``QEvent.FocusOut``), store current value normalized to f_S with full precision (only if ``spec_edited == True``) and display the stored value in selected format Emit 'ui_changed':'stim' """ def _reload_entry(source): """ Reload text entry for active line edit field in rounded format """ if source.objectName() == "stimFreq1": source.setText( str(params['FMT'].format(self.f1 * self.f_scale))) elif source.objectName() == "stimFreq2": source.setText( str(params['FMT'].format(self.f2 * self.f_scale))) elif source.objectName() == "stimT1": source.setText( str(params['FMT'].format(self.T1 * self.t_scale))) elif source.objectName() == "stimT2": source.setText( str(params['FMT'].format(self.T2 * self.t_scale))) elif source.objectName() == "stimTW1": source.setText( str(params['FMT'].format(self.TW1 * self.t_scale))) elif source.objectName() == "stimTW2": source.setText( str(params['FMT'].format(self.TW2 * self.t_scale))) def _store_entry(source): if self.spec_edited: if source.objectName() == "stimFreq1": self.f1 = safe_eval(source.text(), self.f1 * self.f_scale, return_type='float') / self.f_scale source.setText( str(params['FMT'].format(self.f1 * self.f_scale))) elif source.objectName() == "stimFreq2": self.f2 = safe_eval(source.text(), self.f2 * self.f_scale, return_type='float') / self.f_scale source.setText( str(params['FMT'].format(self.f2 * self.f_scale))) elif source.objectName() == "stimT1": self.T1 = safe_eval(source.text(), self.T1 * self.t_scale, return_type='float') / self.t_scale source.setText( str(params['FMT'].format(self.T1 * self.t_scale))) elif source.objectName() == "stimT2": self.T2 = safe_eval(source.text(), self.T2 * self.t_scale, return_type='float') / self.t_scale source.setText( str(params['FMT'].format(self.T2 * self.t_scale))) elif source.objectName() == "stimTW1": self.TW1 = safe_eval(source.text(), self.TW1 * self.t_scale, sign='pos', return_type='float') / self.t_scale source.setText( str(params['FMT'].format(self.TW1 * self.t_scale))) elif source.objectName() == "stimTW2": self.TW2 = safe_eval(source.text(), self.TW2 * self.t_scale, sign='pos', return_type='float') / self.t_scale source.setText( str(params['FMT'].format(self.TW2 * self.t_scale))) self.spec_edited = False # reset flag self._update_scale_impz() self.emit({'ui_changed': 'stim'}) # nothing has changed, but display frequencies in rounded format anyway else: _reload_entry(source) # -------------------------------------------------------------------- # if isinstance(source, QLineEdit): # if source.objectName() in {"stimFreq1","stimFreq2"}: if event.type() in {QEvent.FocusIn, QEvent.KeyPress, QEvent.FocusOut}: if event.type() == QEvent.FocusIn: self.spec_edited = False self.update_freqs() elif event.type() == QEvent.KeyPress: self.spec_edited = True # entry has been changed key = event.key() if key in {Qt.Key_Return, Qt.Key_Enter}: _store_entry(source) elif key == Qt.Key_Escape: # revert changes self.spec_edited = False _reload_entry(source) elif event.type() == QEvent.FocusOut: _store_entry(source) # Call base class method to continue normal event processing: return super(Plot_Tran_Stim_UI, self).eventFilter(source, event) # ------------------------------------------------------------- def recalc_freqs(self): """ Update normalized frequencies if required. This is called by via signal ['ui_changed':'f_S'] from plot_impz.process_sig_rx """ if fb.fil[0]['freq_locked']: self.f1 *= fb.fil[0]['f_S_prev'] / fb.fil[0]['f_S'] self.f2 *= fb.fil[0]['f_S_prev'] / fb.fil[0]['f_S'] self.T1 *= fb.fil[0]['f_S'] / fb.fil[0]['f_S_prev'] self.T2 *= fb.fil[0]['f_S'] / fb.fil[0]['f_S_prev'] self.TW1 *= fb.fil[0]['f_S'] / fb.fil[0]['f_S_prev'] self.TW2 *= fb.fil[0]['f_S'] / fb.fil[0]['f_S_prev'] self._update_scale_impz() self.update_freqs() self.emit({'ui_changed': 'f1_f2'}) # ------------------------------------------------------------- def update_freqs(self): """ `update_freqs()` is called: - when one of the stimulus frequencies has changed via eventFilter() - sampling frequency has been changed via signal ['ui_changed':'f_S'] from plot_impz.process_sig_rx -> self.recalc_freqs The sampling frequency is loaded from filter dictionary and stored as `self.f_scale` (except when the frequency unit is k when `f_scale = self.N_FFT`). Frequency field entries are always stored normalized w.r.t. f_S in the dictionary: When the `f_S` lock button is unlocked, only the displayed values for frequency entries are updated with f_S, not the dictionary. When the `f_S` lock button is pressed, the absolute frequency values in the widget fields are kept constant, and the dictionary entries are updated. """ # recalculate displayed freq spec values for (maybe) changed f_S if fb.fil[0]['freq_specs_unit'] == 'k': self.f_scale = self.N_FFT else: self.f_scale = fb.fil[0]['f_S'] self.t_scale = fb.fil[0]['T_S'] if self.ledFreq1.hasFocus(): # widget has focus, show full precision self.ledFreq1.setText(str(self.f1 * self.f_scale)) elif self.ledFreq2.hasFocus(): self.ledFreq2.setText(str(self.f2 * self.f_scale)) elif self.led_T1.hasFocus(): self.led_T1.setText(str(self.T1 * self.t_scale)) elif self.led_T2.hasFocus(): self.led_T2.setText(str(self.T2 * self.t_scale)) elif self.led_TW1.hasFocus(): self.led_TW1.setText(str(self.TW1 * self.t_scale)) elif self.led_TW2.hasFocus(): self.led_TW2.setText(str(self.TW2 * self.t_scale)) else: # widgets have no focus, round the display self.ledFreq1.setText( str(params['FMT'].format(self.f1 * self.f_scale))) self.ledFreq2.setText( str(params['FMT'].format(self.f2 * self.f_scale))) self.led_T1.setText( str(params['FMT'].format(self.T1 * self.t_scale))) self.led_T2.setText( str(params['FMT'].format(self.T2 * self.t_scale))) self.led_TW1.setText( str(params['FMT'].format(self.TW1 * self.t_scale))) self.led_TW2.setText( str(params['FMT'].format(self.TW2 * self.t_scale))) self.update_freq_units( ) # TODO: should only be called at f_S / unit update # ------------------------------------------------------------- def _enable_stim_widgets(self): """ Enable / disable widgets depending on the selected stimulus """ self.cmb_stim = qget_cmb_box(self.cmbStimulus) if self.cmb_stim == "impulse": self.stim = qget_cmb_box(self.cmbImpulseType) # recalculate the energy scaling for impulse functions self._update_scale_impz() elif self.cmb_stim == "sinusoid": self.stim = qget_cmb_box(self.cmbSinusoidType) elif self.cmb_stim == "periodic": self.stim = qget_cmb_box(self.cmbPeriodicType) elif self.cmb_stim == "modulation": self.stim = qget_cmb_box(self.cmbModulationType) else: self.stim = self.cmb_stim # read out which stimulus widgets are enabled stim_wdg = self.stim_wdg_dict[self.stim] self.lblDC.setVisible("dc" in stim_wdg) self.ledDC.setVisible("dc" in stim_wdg) self.chk_step_err.setVisible(self.stim == "step") self.lblStimPar1.setVisible("par1" in stim_wdg) self.ledStimPar1.setVisible("par1" in stim_wdg) self.but_stim_bl.setVisible("bl" in stim_wdg) self.lblAmp1.setVisible("a1" in stim_wdg) self.ledAmp1.setVisible("a1" in stim_wdg) self.lblPhi1.setVisible("phi1" in stim_wdg) self.ledPhi1.setVisible("phi1" in stim_wdg) self.lblPhU1.setVisible("phi1" in stim_wdg) self.lbl_T1.setVisible("T1" in stim_wdg) self.led_T1.setVisible("T1" in stim_wdg) self.lbl_TU1.setVisible("T1" in stim_wdg) self.lbl_TW1.setVisible("TW1" in stim_wdg) self.led_TW1.setVisible("TW1" in stim_wdg) self.lbl_TWU1.setVisible("TW1" in stim_wdg) self.lblFreq1.setVisible("f1" in stim_wdg) self.ledFreq1.setVisible("f1" in stim_wdg) self.lblFreqUnit1.setVisible("f1" in stim_wdg) self.lbl_BW1.setVisible("BW1" in stim_wdg) self.led_BW1.setVisible("BW1" in stim_wdg) self.lblAmp2.setVisible("a2" in stim_wdg) self.ledAmp2.setVisible("a2" in stim_wdg) self.lblPhi2.setVisible("phi2" in stim_wdg) self.ledPhi2.setVisible("phi2" in stim_wdg) self.lblPhU2.setVisible("phi2" in stim_wdg) self.lbl_T2.setVisible("T2" in stim_wdg) self.led_T2.setVisible("T2" in stim_wdg) self.lbl_TU2.setVisible("T2" in stim_wdg) self.lbl_TW2.setVisible("TW2" in stim_wdg) self.led_TW2.setVisible("TW2" in stim_wdg) self.lbl_TWU2.setVisible("TW2" in stim_wdg) self.lblFreq2.setVisible("f2" in stim_wdg) self.ledFreq2.setVisible("f2" in stim_wdg) self.lblFreqUnit2.setVisible("f2" in stim_wdg) self.lbl_BW2.setVisible("BW2" in stim_wdg) self.led_BW2.setVisible("BW2" in stim_wdg) self.lblStimFormula.setVisible(self.stim == "formula") self.ledStimFormula.setVisible(self.stim == "formula") self.cmbImpulseType.setVisible(self.cmb_stim == 'impulse') self.cmbSinusoidType.setVisible(self.cmb_stim == 'sinusoid') self.cmbChirpType.setVisible(self.cmb_stim == 'chirp') self.cmbPeriodicType.setVisible(self.cmb_stim == 'periodic') self.cmbModulationType.setVisible(self.cmb_stim == 'modulation') self.emit({'ui_changed': 'stim'}) # ------------------------------------------------------------- def _update_amp1(self): """ Update value for self.A1 from QLineEditWidget""" self.A1 = safe_eval(self.ledAmp1.text(), self.A1, return_type='cmplx') self.ledAmp1.setText(str(self.A1)) self.emit({'ui_changed': 'a1'}) def _update_amp2(self): """ Update value for self.A2 from the QLineEditWidget""" self.A2 = safe_eval(self.ledAmp2.text(), self.A2, return_type='cmplx') self.ledAmp2.setText(str(self.A2)) self.emit({'ui_changed': 'a2'}) def _update_phi1(self): """ Update value for self.phi1 from QLineEditWidget""" self.phi1 = safe_eval(self.ledPhi1.text(), self.phi1, return_type='float') self.ledPhi1.setText(str(self.phi1)) self.emit({'ui_changed': 'phi1'}) def _update_BW1(self): """ Update value for self.BW1 from QLineEditWidget""" self.BW1 = safe_eval(self.led_BW1.text(), self.BW1, return_type='float', sign='pos') self.led_BW1.setText(str(self.BW1)) self._update_scale_impz() self.emit({'ui_changed': 'BW1'}) def _update_BW2(self): """ Update value for self.BW2 from QLineEditWidget""" self.BW2 = safe_eval(self.led_BW2.text(), self.BW2, return_type='float', sign='pos') self.led_BW2.setText(str(self.BW2)) self.emit({'ui_changed': 'BW2'}) def _update_scale_impz(self): """ recalculate the energy scaling for impulse functions when impulse type or relevant frequency / bandwidth parameter have been updated """ if self.stim == "dirac": self.scale_impz = 1. elif self.stim == "sinc": self.scale_impz = self.f1 * 2 elif self.stim == "gauss": self.scale_impz = self.f1 * 2 * self.BW1 elif self.stim == "rect": self.scale_impz = 1. / self.TW1 def _update_phi2(self): """ Update value for self.phi2 from the QLineEditWidget""" self.phi2 = safe_eval(self.ledPhi2.text(), self.phi2, return_type='float') self.ledPhi2.setText(str(self.phi2)) self.emit({'ui_changed': 'phi2'}) def _update_chirp_type(self): """ Update value for self.chirp_type from data field of ComboBox""" self.chirp_type = qget_cmb_box(self.cmbChirpType) self.emit({'ui_changed': 'chirp_type'}) def _update_impulse_type(self): """ Update value for self.impulse_type from data field of ComboBox""" self.impulse_type = qget_cmb_box(self.cmbImpulseType) self._enable_stim_widgets() def _update_sinusoid_type(self): """ Update value for self.sinusoid_type from data field of ComboBox""" self.sinusoid_type = qget_cmb_box(self.cmbSinusoidType) self._enable_stim_widgets() def _update_periodic_type(self): """ Update value for self.periodic_type from data field of ComboBox""" self.periodic_type = qget_cmb_box(self.cmbPeriodicType) self._enable_stim_widgets() def _update_modulation_type(self): """ Update value for self.modulation_type from from data field of ComboBox""" self.modulation_type = qget_cmb_box(self.cmbModulationType) self._enable_stim_widgets() # ------------------------------------------------------------- def _update_noi(self): """ Update type + value + label for self.noi for noise""" self.noise = qget_cmb_box(self.cmbNoise) self.lblNoi.setVisible(self.noise != 'none') self.ledNoi.setVisible(self.noise != 'none') if self.noise != 'none': self.noi = safe_eval(self.ledNoi.text(), 0, return_type='cmplx') self.ledNoi.setText(str(self.noi)) if self.noise == 'gauss': self.lblNoi.setText(to_html(" σ =", frmt='bi')) self.ledNoi.setToolTip( "<span>Standard deviation of statistical process," "noise power is <i>P</i> = σ<sup>2</sup></span>") elif self.noise == 'uniform': self.lblNoi.setText(to_html(" Δ =", frmt='bi')) self.ledNoi.setToolTip( "<span>Interval size for uniformly distributed process (e.g. " "quantization step size for quantization noise), centered around 0. " "Noise power is <i>P</i> = Δ<sup>2</sup>/12.</span>") elif self.noise == 'prbs': self.lblNoi.setText(to_html(" A =", frmt='bi')) self.ledNoi.setToolTip( "<span>Amplitude of bipolar Pseudorandom Binary Sequence. " "Noise power is <i>P</i> = A<sup>2</sup>.</span>") elif self.noise == 'mls': self.lblNoi.setText(to_html(" A =", frmt='bi')) self.ledNoi.setToolTip( "<span>Amplitude of Maximum Length Sequence. " "Noise power is <i>P</i> = A<sup>2</sup>.</span>") elif self.noise == 'brownian': self.lblNoi.setText(to_html(" σ =", frmt='bi')) self.ledNoi.setToolTip( "<span>Standard deviation of the Gaussian process " "that is cumulated.</span>") self.emit({'ui_changed': 'noi'}) def _update_DC(self): """ Update value for self.DC from the QLineEditWidget""" self.DC = safe_eval(self.ledDC.text(), 0, return_type='cmplx') self.ledDC.setText(str(self.DC)) self.emit({'ui_changed': 'dc'}) def _update_stim_formula(self): """Update string with formula to be evaluated by numexpr""" self.stim_formula = self.ledStimFormula.text().strip() self.ledStimFormula.setText(str(self.stim_formula)) self.emit({'ui_changed': 'stim_formula'}) def _update_stim_par1(self): """ Update value for self.par1 from QLineEditWidget""" self.stim_par1 = safe_eval(self.ledStimPar1.text(), self.stim_par1, sign='pos', return_type='float') self.ledStimPar1.setText(str(self.stim_par1)) self.emit({'ui_changed': 'stim_par1'})
class EllipZeroPhz(QWidget): # Since we are also using poles/residues -> let's force zpk FRMT = 'zpk' info = """ **Elliptic filters with zero phase** (also known as Cauer filters) have the steepest rate of transition between the frequency response’s passband and stopband of all IIR filters. This comes at the expense of a constant ripple (equiripple) :math:`A_PB` and :math:`A_SB` in both pass and stop band. Ringing of the step response is increased in comparison to Chebychev filters. As the passband ripple :math:`A_PB` approaches 0, the elliptical filter becomes a Chebyshev type II filter. As the stopband ripple :math:`A_SB` approaches 0, it becomes a Chebyshev type I filter. As both approach 0, becomes a Butterworth filter (butter). For the filter design, the order :math:`N`, minimum stopband attenuation :math:`A_SB` and the critical frequency / frequencies :math:`F_PB` where the gain first drops below the maximum passband ripple :math:`-A_PB` have to be specified. The ``ellipord()`` helper routine calculates the minimum order :math:`N` and critical passband frequency :math:`F_C` from pass and stop band specifications. The Zero Phase Elliptic Filter squares an elliptic filter designed in a way to produce the required Amplitude specifications. So initially the amplitude specs design an elliptic filter with the square root of the amp specs. The filter is then squared to produce a zero phase filter. The filter coefficients are applied to the signal data in a backward and forward time fashion. This filter can only be applied to stored signal data (not real-time streaming data that comes in a forward time order). We are forcing the order N of the filter to be even. This simplifies the poles/zeros to be complex (no real values). **Design routines:** ``scipy.signal.ellip()``, ``scipy.signal.ellipord()`` """ sig_tx = pyqtSignal(object) def __init__(self): QWidget.__init__(self) self.ft = 'IIR' c = Common() self.rt_dict = c.rt_base_iir self.rt_dict_add = { 'COM': { 'man': { 'msg': ('a', "Enter the filter order <b><i>N</i></b>, the minimum stop " "band attenuation <b><i>A<sub>SB</sub></i></b> and frequency or " "frequencies <b><i>F<sub>C</sub></i></b> where gain first drops " "below the max passband ripple <b><i>-A<sub>PB</sub></i></b> ." ) } }, 'LP': { 'man': {}, 'min': {} }, 'HP': { 'man': {}, 'min': {} }, 'BS': { 'man': {}, 'min': {} }, 'BP': { 'man': {}, 'min': {} }, } self.info_doc = [] self.info_doc.append('ellip()\n========') self.info_doc.append(sig.ellip.__doc__) self.info_doc.append('ellipord()\n==========') self.info_doc.append(ellipord.__doc__) #-------------------------------------------------------------------------- def construct_UI(self): """ Create additional subwidget(s) needed for filter design: These subwidgets are instantiated dynamically when needed in select_filter.py using the handle to the filter instance, fb.fil_inst. """ # ============================================================================= # self.chkComplex = QCheckBox("ComplexFilter", self) # self.chkComplex.setToolTip("Designs BP or BS Filter for complex data.") # self.chkComplex.setObjectName('wdg_lbl_el') # self.chkComplex.setChecked(False) # # ============================================================================= self.butSave = QPushButton(self) self.butSave.setText("SAVE") self.butSave.setToolTip("Save filter in proprietary format") #-------------------------------------------------- # Layout for filter optional subwidgets self.layHWin = QHBoxLayout() self.layHWin.setObjectName('wdg_layGWin') #self.layHWin.addWidget(self.chkComplex) self.layHWin.addWidget(self.butSave) self.layHWin.addStretch() self.layHWin.setContentsMargins(0, 0, 0, 0) # Widget containing all subwidgets self.wdg_fil = QWidget(self) self.wdg_fil.setObjectName('wdg_fil') self.wdg_fil.setLayout(self.layHWin) self.butSave.clicked.connect(self.save_filter) def _get_params(self, fil_dict): """ Translate parameters from the passed dictionary to instance parameters, scaling / transforming them if needed. For zero phase filter, we take square root of amplitude specs since we later square filter. Define design around smallest amp spec """ # Frequencies are normalized to f_Nyq = f_S/2, ripple specs are in dB self.analog = False # set to True for analog filters self.manual = False # default is normal design self.N = int(fil_dict['N']) # force N to be even if (self.N % 2) == 1: self.N += 1 self.F_PB = fil_dict['F_PB'] * 2 self.F_SB = fil_dict['F_SB'] * 2 self.F_PB2 = fil_dict['F_PB2'] * 2 self.F_SB2 = fil_dict['F_SB2'] * 2 self.F_PBC = None # find smallest spec'd linear value and rewrite dictionary ampPB = fil_dict['A_PB'] ampSB = fil_dict['A_SB'] # take square roots of amp specs so resulting squared # filter will meet specifications if (ampPB < ampSB): ampSB = sqrt(ampPB) ampPB = sqrt(1 + ampPB) - 1 else: ampPB = sqrt(1 + ampSB) - 1 ampSB = sqrt(ampSB) self.A_PB = lin2unit(ampPB, 'IIR', 'A_PB', unit='dB') self.A_SB = lin2unit(ampSB, 'IIR', 'A_SB', unit='dB') #logger.warning("design with "+str(self.A_PB)+","+str(self.A_SB)) # ellip filter routines support only one amplitude spec for # pass- and stop band each if str(fil_dict['rt']) == 'BS': fil_dict['A_PB2'] = self.A_PB elif str(fil_dict['rt']) == 'BP': fil_dict['A_SB2'] = self.A_SB # partial fraction expansion to define residue vector def _partial(self, k, p, z, norder): # create diff array diff = p - z # now compute residual vector cone = complex(1., 0.) residues = zeros(norder, complex) for i in range(norder): residues[i] = k * (diff[i] / p[i]) for j in range(norder): if (j != i): residues[i] = residues[i] * (cone + diff[j] / (p[i] - p[j])) # now compute DC term for new expansion sumRes = 0. for i in range(norder): sumRes = sumRes + residues[i].real dc = k - sumRes return (dc, residues) # # Take a causal filter and square it. The result has the square # of the amplitude response of the input, and zero phase. Filter # is noncausal. # Input: # k - gain in pole/zero form # p - numpy array of poles # z - numpy array of zeros # g - gain in pole/residue form # r - numpy array of residues # nn- order of filter # Output: # kn - new gain (pole/zero) # pn - new poles # zn - new zeros (numpy array) # gn - new gain (pole/residue) # rn - new residues def _sqCausal(self, k, p, z, g, r, nn): # Anticausal poles have conjugate-reciprocal symmetry # Starting anticausal residues are conjugates (adjusted below) pA = conj(1. / p) # antiCausal poles zA = conj(z) # antiCausal zeros (store reciprocal) rA = conj(r) # antiCausal residues (to start) rC = zeros(nn, complex) # Adjust residues. Causal part first. for j in range(nn): # Evaluate the anticausal filter at each causal pole tmpx = rA / (1. - p[j] / pA) ztmp = g + sum(tmpx) # Adjust residue rC[j] = r[j] * ztmp # anticausal residues are just conjugates of causal residues # r3 = np.conj(r2) # Compute the constant term dc2 = (g + sum(r)) * g - sum(rC) # Populate output (2nn elements) gn = dc2.real # Drop complex poles/residues in LHP, keep only UHP pA = conj(p) #store AntiCasual pole (reciprocal) p0 = zeros(int(nn / 2), complex) r0 = zeros(int(nn / 2), complex) cnt = 0 for j in range(nn): if (p[j].imag > 0.0): p0[cnt] = p[j] r0[cnt] = rC[j] cnt = cnt + 1 # Let operator know we squared filter # logger.info('After squaring filter, order: '+str(nn*2)) # For now and our case, only store causal residues # Filters are symmetric and can generate antiCausal residues return (pA, zA, gn, p0, r0) def _test_N(self): """ Warn the user if the calculated order is too high for a reasonable filter design. """ if self.N > 30: return qfilter_warning(self, self.N, "Zero-phase Elliptic") else: return True # custom save of filter dictionary def _save(self, fil_dict, arg): """ First design initial elliptic filter meeting sqRoot Amp specs; - Then create residue vector from poles/zeros; - Then square filter (k,p,z and dc,p,r) to get zero phase filter; - Then Convert results of filter design to all available formats (pz, pr, ba, sos) and store them in the global filter dictionary. Corner frequencies and order calculated for minimum filter order are also stored to allow for an easy subsequent manual filter optimization. """ fil_save(fil_dict, arg, self.FRMT, __name__) # For min. filter order algorithms, update filter dict with calculated # new values for filter order N and corner frequency(s) F_PBC fil_dict['N'] = self.N if str(fil_dict['fo']) == 'min': if str(fil_dict['rt']) == 'LP' or str(fil_dict['rt']) == 'HP': # HP or LP - single corner frequency fil_dict['F_PB'] = self.F_PBC / 2. else: # BP or BS - two corner frequencies fil_dict['F_PB'] = self.F_PBC[0] / 2. fil_dict['F_PB2'] = self.F_PBC[1] / 2. # Now generate poles/residues for custom file save of new parameters if (not self.manual): z = fil_dict['zpk'][0] p = fil_dict['zpk'][1] k = fil_dict['zpk'][2] n = len(z) gain, residues = self._partial(k, p, z, n) pA, zA, gn, pC, rC = self._sqCausal(k, p, z, gain, residues, n) fil_dict['rpk'] = [rC, pC, gn] # save antiCausal b,a (nonReciprocal) also [easier to compute h(n) try: fil_dict['baA'] = sig.zpk2tf(zA, pA, k) except Exception as e: logger.error(e) # 'rpk' is our signal that this is a non-Causal filter with zero phase # inserted into fil dictionary after fil_save and convert # sig_tx -> select_filter -> filter_specs self.sig_tx.emit({'sender': __name__, 'filt_changed': 'ellip_zero'}) #------------------------------------------------------------------------------ def save_filter(self): file_filters = ("Text file pole/residue (*.txt_rpk)") dlg = QFD(self) # return selected file name (with or without extension) and filter (Linux: full text) file_name, file_type = dlg.getSaveFileName_(caption="Save filter as", directory=dirs.save_dir, filter=file_filters) file_name = str(file_name) # QString -> str() needed for Python 2.x # Qt5 has QFileDialog.mimeTypeFilters(), but under Qt4 the mime type cannot # be extracted reproducibly across file systems, so it is done manually: for t in extract_file_ext( file_filters): # get a list of file extensions if t in str(file_type): file_type = t # return the last matching extension if file_name != "": # cancelled file operation returns empty string # strip extension from returned file name (if any) + append file type: file_name = os.path.splitext(file_name)[0] + file_type file_type_err = False try: # save as a custom residue/pole text output for apply with custom tool # make sure we have the residues if 'rpk' in fb.fil[0]: with io.open(file_name, 'w', encoding="utf8") as f: self.file_dump(f) else: file_type_err = True logger.error( 'Filter has no residues/poles, cannot save as *.txt_rpk file' ) if not file_type_err: logger.info('Successfully saved filter as\n\t"{0}"'.format( file_name)) dirs.save_dir = os.path.dirname(file_name) # save new dir except IOError as e: logger.error('Failed saving "{0}"!\n{1}'.format(file_name, e)) #------------------------------------------------------------------------------ def file_dump(self, fOut): """ Dump file out in custom text format that apply tool can read to know filter coef's """ # Fixed format widths for integers and doubles intw = '10' dblW = 27 frcW = 20 # Fill up character string with filter output filtStr = '# IIR filter\n' # parameters that made filter (choose smallest eps) # Amp is stored in Volts (linear units) # the second amp terms aren't really used (for ellip filters) FA_PB = fb.fil[0]['A_PB'] FA_SB = fb.fil[0]['A_SB'] FAmp = min(FA_PB, FA_SB) # Freq terms in radians so move from -1:1 to -pi:pi f_lim = fb.fil[0]['freqSpecsRange'] f_unit = fb.fil[0]['freq_specs_unit'] F_S = fb.fil[0]['f_S'] if fb.fil[0]['freq_specs_unit'] == 'f_S': F_S = F_S * 2 F_SB = fb.fil[0]['F_SB'] * F_S * np.pi F_SB2 = fb.fil[0]['F_SB2'] * F_S * np.pi F_PB = fb.fil[0]['F_PB'] * F_S * np.pi F_PB2 = fb.fil[0]['F_PB2'] * F_S * np.pi # Determine pass/stop bands depending on filter response type passMin = [] passMax = [] stopMin = [] stopMax = [] if fb.fil[0]['rt'] == 'LP': passMin = [-F_PB, 0, 0] passMax = [F_PB, 0, 0] stopMin = [-np.pi, F_SB, 0] stopMax = [-F_SB, np.pi, 0] f1 = F_PB f2 = F_SB f3 = f4 = 0 Ftype = 1 Fname = 'Low_Pass' if fb.fil[0]['rt'] == 'HP': passMin = [-np.pi, F_PB, 0] passMax = [-F_PB, np.pi, 0] stopMin = [-F_SB, 0, 0] stopMax = [F_SB, 0, 0] f1 = F_SB f2 = F_PB f3 = f4 = 0 Ftype = 2 Fname = 'Hi_Pass' if fb.fil[0]['rt'] == 'BS': passMin = [-np.pi, -F_PB, F_PB2] passMax = [-F_PB2, F_PB, np.pi] stopMin = [-F_SB2, F_SB, 0] stopMax = [-F_SB, F_SB2, 0] f1 = F_PB f2 = F_SB f3 = F_SB2 f4 = F_PB2 Ftype = 4 Fname = 'Band_Stop' if fb.fil[0]['rt'] == 'BP': passMin = [-F_PB2, F_PB, 0] passMax = [-F_PB, F_PB2, 0] stopMin = [-np.pi, -F_SB, F_SB2] stopMax = [-F_SB2, F_SB, np.pi] f1 = F_SB f2 = F_PB f3 = F_PB2 f4 = F_SB2 Ftype = 3 Fname = 'Band_Pass' filtStr = filtStr + '{:{align}{width}}'.format( '10', align='>', width=intw) + ' IIRFILT_4SYM\n' filtStr = filtStr + '{:{align}{width}}'.format( str(Ftype), align='>', width=intw) + ' ' + Fname + '\n' filtStr = filtStr + '{:{d}.{p}f}'.format(FAmp, d=dblW, p=frcW) + '\n' filtStr = filtStr + '{: {d}.{p}f}'.format(passMin[0], d=dblW, p=frcW) filtStr = filtStr + '{: {d}.{p}f}'.format(passMax[0], d=dblW, p=frcW) + '\n' filtStr = filtStr + '{: {d}.{p}f}'.format(passMin[1], d=dblW, p=frcW) filtStr = filtStr + '{: {d}.{p}f}'.format(passMax[1], d=dblW, p=frcW) + '\n' filtStr = filtStr + '{: {d}.{p}f}'.format(passMin[2], d=dblW, p=frcW) filtStr = filtStr + '{: {d}.{p}f}'.format(passMax[2], d=dblW, p=frcW) + '\n' filtStr = filtStr + '{: {d}.{p}f}'.format(stopMin[0], d=dblW, p=frcW) filtStr = filtStr + '{: {d}.{p}f}'.format(stopMax[0], d=dblW, p=frcW) + '\n' filtStr = filtStr + '{: {d}.{p}f}'.format(stopMin[1], d=dblW, p=frcW) filtStr = filtStr + '{: {d}.{p}f}'.format(stopMax[1], d=dblW, p=frcW) + '\n' filtStr = filtStr + '{: {d}.{p}f}'.format(stopMin[2], d=dblW, p=frcW) filtStr = filtStr + '{: {d}.{p}f}'.format(stopMax[2], d=dblW, p=frcW) + '\n' filtStr = filtStr + '{: {d}.{p}f}'.format(f1, d=dblW, p=frcW) filtStr = filtStr + '{: {d}.{p}f}'.format(f2, d=dblW, p=frcW) + '\n' filtStr = filtStr + '{: {d}.{p}f}'.format(f3, d=dblW, p=frcW) filtStr = filtStr + '{: {d}.{p}f}'.format(f4, d=dblW, p=frcW) + '\n' # move pol/res/gain into terms we need Fdc = fb.fil[0]['rpk'][2] rC = fb.fil[0]['rpk'][0] pC = fb.fil[0]['rpk'][1] Fnum = len(pC) # Gain term filtStr = filtStr + '{: {d}.{p}e}'.format(Fdc, d=dblW, p=frcW) + '\n' # Real pole count inside the unit circle (none of these) filtStr = filtStr + '{:{align}{width}}'.format( str(0), align='>', width=intw) + '\n' # Complex pole/res count inside the unit circle filtStr = filtStr + '{:{i}d}'.format(Fnum, i=intw) + '\n' # Now dump poles/residues for j in range(Fnum): filtStr = filtStr + '{:{i}d}'.format(j, i=intw) + ' ' filtStr = filtStr + '{: {d}.{p}e}'.format( rC[j].real, d=dblW, p=frcW) + ' ' filtStr = filtStr + '{: {d}.{p}e}'.format( rC[j].imag, d=dblW, p=frcW) + ' ' filtStr = filtStr + '{: {d}.{p}e}'.format( pC[j].real, d=dblW, p=frcW) + ' ' filtStr = filtStr + '{: {d}.{p}e}'.format( pC[j].imag, d=dblW, p=frcW) + '\n' # Real pole count outside the unit circle (none of these) filtStr = filtStr + '{:{align}{width}}'.format( str(0), align='>', width=intw) + '\n' # Complex pole count outside the unit circle (none of these) filtStr = filtStr + '{:{align}{width}}'.format( str(0), align='>', width=intw) + '\n' # Now write huge text string to file fOut.write(filtStr) #------------------------------------------------------------------------------ # # DESIGN ROUTINES # #------------------------------------------------------------------------------ # LP: F_PB < F_stop ------------------------------------------------------- def LPmin(self, fil_dict): """Elliptic LP filter, minimum order""" self._get_params(fil_dict) self.N, self.F_PBC = ellipord(self.F_PB, self.F_SB, self.A_PB, self.A_SB, analog=self.analog) # force even N if (self.N % 2) == 1: self.N += 1 if not self._test_N(): return -1 #logger.warning("and "+str(self.F_PBC) + " " + str(self.N)) self._save( fil_dict, sig.ellip(self.N, self.A_PB, self.A_SB, self.F_PBC, btype='low', analog=self.analog, output=self.FRMT)) def LPman(self, fil_dict): """Elliptic LP filter, manual order""" self._get_params(fil_dict) if not self._test_N(): return -1 self._save( fil_dict, sig.ellip(self.N, self.A_PB, self.A_SB, self.F_PB, btype='low', analog=self.analog, output=self.FRMT)) # HP: F_stop < F_PB ------------------------------------------------------- def HPmin(self, fil_dict): """Elliptic HP filter, minimum order""" self._get_params(fil_dict) self.N, self.F_PBC = ellipord(self.F_PB, self.F_SB, self.A_PB, self.A_SB, analog=self.analog) # force even N if (self.N % 2) == 1: self.N += 1 if not self._test_N(): return -1 self._save( fil_dict, sig.ellip(self.N, self.A_PB, self.A_SB, self.F_PBC, btype='highpass', analog=self.analog, output=self.FRMT)) def HPman(self, fil_dict): """Elliptic HP filter, manual order""" self._get_params(fil_dict) if not self._test_N(): return -1 self._save( fil_dict, sig.ellip(self.N, self.A_PB, self.A_SB, self.F_PB, btype='highpass', analog=self.analog, output=self.FRMT)) # For BP and BS, F_XX have two elements each, A_XX has only one # BP: F_SB[0] < F_PB[0], F_SB[1] > F_PB[1] -------------------------------- def BPmin(self, fil_dict): """Elliptic BP filter, minimum order""" self._get_params(fil_dict) self.N, self.F_PBC = ellipord([self.F_PB, self.F_PB2], [self.F_SB, self.F_SB2], self.A_PB, self.A_SB, analog=self.analog) #logger.warning(" "+str(self.F_PBC) + " " + str(self.N)) if (self.N % 2) == 1: self.N += 1 if not self._test_N(): return -1 #logger.warning("-"+str(self.F_PBC) + " " + str(self.A_SB)) self._save( fil_dict, sig.ellip(self.N, self.A_PB, self.A_SB, self.F_PBC, btype='bandpass', analog=self.analog, output=self.FRMT)) def BPman(self, fil_dict): """Elliptic BP filter, manual order""" self._get_params(fil_dict) if not self._test_N(): return -1 self._save( fil_dict, sig.ellip(self.N, self.A_PB, self.A_SB, [self.F_PB, self.F_PB2], btype='bandpass', analog=self.analog, output=self.FRMT)) # BS: F_SB[0] > F_PB[0], F_SB[1] < F_PB[1] -------------------------------- def BSmin(self, fil_dict): """Elliptic BP filter, minimum order""" self._get_params(fil_dict) self.N, self.F_PBC = ellipord([self.F_PB, self.F_PB2], [self.F_SB, self.F_SB2], self.A_PB, self.A_SB, analog=self.analog) # force even N if (self.N % 2) == 1: self.N += 1 if not self._test_N(): return -1 self._save( fil_dict, sig.ellip(self.N, self.A_PB, self.A_SB, self.F_PBC, btype='bandstop', analog=self.analog, output=self.FRMT)) def BSman(self, fil_dict): """Elliptic BS filter, manual order""" self._get_params(fil_dict) if not self._test_N(): return -1 self._save( fil_dict, sig.ellip(self.N, self.A_PB, self.A_SB, [self.F_PB, self.F_PB2], btype='bandstop', analog=self.analog, output=self.FRMT))
class Input_Fixpoint_Specs(QWidget): """ Create the widget that holds the dynamically loaded fixpoint filter ui """ # emit a signal when the image has been resized sig_resize = pyqtSignal() # incoming from subwidgets -> process_sig_rx_local sig_rx_local = pyqtSignal(object) # incoming, connected to input_tab_widget.sig_rx sig_rx = pyqtSignal(object) # outcgoing sig_tx = pyqtSignal(object) def __init__(self, parent): super(Input_Fixpoint_Specs, self).__init__(parent) self.tab_label = 'Fixpoint' self.tool_tip = ( "<span>Select a fixpoint implementation for the filter," " simulate it or generate a Verilog netlist.</span>") self.parent = parent self.fx_path = os.path.realpath( os.path.join(dirs.INSTALL_DIR, 'fixpoint_widgets')) self.no_fx_filter_img = os.path.join(self.fx_path, "no_fx_filter.png") if not os.path.isfile(self.no_fx_filter_img): logger.error("Image {0:s} not found!".format( self.no_fx_filter_img)) self.default_fx_img = os.path.join(self.fx_path, "default_fx_img.png") if not os.path.isfile(self.default_fx_img): logger.error("Image {0:s} not found!".format(self.default_fx_img)) if HAS_MIGEN: self._construct_UI() else: self.state = "deactivated" # "invisible", "disabled" #------------------------------------------------------------------------------ def process_sig_rx(self, dict_sig=None): """ Process signals coming in via subwidgets and sig_rx Play PingPong with a stimulus & plot widget: 2. ``fx_sim_init()``: Request stimulus by sending 'fx_sim':'get_stimulus' 3. ``fx_sim_set_stimulus()``: Receive stimulus from widget in 'fx_sim':'send_stimulus' and pass it to HDL object for simulation 4. Send back HDL response to widget via 'fx_sim':'set_response' """ logger.debug("process_sig_rx(): vis={0}\n{1}"\ .format(self.isVisible(), pprint_log(dict_sig))) if dict_sig['sender'] == __name__: logger.debug("Stopped infinite loop\n{0}".format( pprint_log(dict_sig))) return elif 'data_changed' in dict_sig and dict_sig[ 'data_changed'] == "filter_designed": # New filter has been designed, update list of available filter topologies here self._update_filter_cmb() return elif 'data_changed' in dict_sig or\ ('view_changed' in dict_sig and dict_sig['view_changed'] == 'q_coeff'): # update fields in the filter topology widget - wordlength may have # been changed. Also set RUN button to "changed" in wdg_dict2ui() self.wdg_dict2ui() #self.sig_tx.emit({'sender':__name__, 'fx_sim':'specs_changed'}) elif 'fx_sim' in dict_sig: if dict_sig['fx_sim'] == 'init': if self.fx_wdg_found: self.fx_sim_init() else: logger.error("No fixpoint widget found!") qstyle_widget(self.butSimHDL, "error") self.sig_tx.emit({'sender': __name__, 'fx_sim': 'error'}) elif dict_sig['fx_sim'] == 'send_stimulus': self.fx_sim_set_stimulus(dict_sig) elif dict_sig['fx_sim'] == 'specs_changed': # fixpoint specification have been changed somewhere, update ui # and set run button to "changed" in wdg_dict2ui() self.wdg_dict2ui() elif dict_sig['fx_sim'] == 'finish': qstyle_widget(self.butSimHDL, "normal") logger.info('Fixpoint simulation [{0:5.3g} ms]: Plotting finished'\ .format((time.process_time() - self.t_resp)*1000)) else: logger.error('Unknown "fx_sim" command option "{0}"\n' '\treceived from "{1}".'.format( dict_sig['fx_sim'], dict_sig['sender'])) # ---- Process local widget signals elif 'ui' in dict_sig: if 'id' in dict_sig and dict_sig['id'] == 'w_input': """ Input fixpoint format has been changed or butLock has been clicked. When I/O lock is active, copy input fixpoint word format to output word format. """ if dict_sig[ 'ui'] == 'butLock' and not self.wdg_w_input.butLock.isChecked( ): # butLock was deactivitated, don't do anything return elif self.wdg_w_input.butLock.isChecked(): # but lock was activated or wordlength setting have been changed fb.fil[0]['fxqc']['QO']['WI'] = fb.fil[0]['fxqc']['QI'][ 'WI'] fb.fil[0]['fxqc']['QO']['WF'] = fb.fil[0]['fxqc']['QI'][ 'WF'] fb.fil[0]['fxqc']['QO']['W'] = fb.fil[0]['fxqc']['QI']['W'] elif 'id' in dict_sig and dict_sig['id'] == 'w_output': """ Output fixpoint format has been changed. When I/O lock is active, copy output fixpoint word format to input word format. """ if self.wdg_w_input.butLock.isChecked(): fb.fil[0]['fxqc']['QI']['WI'] = fb.fil[0]['fxqc']['QO'][ 'WI'] fb.fil[0]['fxqc']['QI']['WF'] = fb.fil[0]['fxqc']['QO'][ 'WF'] fb.fil[0]['fxqc']['QI']['W'] = fb.fil[0]['fxqc']['QO']['W'] elif 'id' in dict_sig and dict_sig['id'] in \ {'w_coeff', 'q_input', 'q_output', 'w_accu', 'q_accu'}: pass # nothing to do for now else: if not "id" in dict_sig: logger.warning("No id in dict_sig:\n{0}".format( pprint_log(dict_sig))) else: logger.warning('Unknown id "{0}" in dict_sig:\n{1}'\ .format(dict_sig['id'], pprint_log(dict_sig))) if not dict_sig['ui'] in { 'WI', 'WF', 'ovfl', 'quant', 'cmbW', 'butLock' }: logger.warning("Unknown value '{0}' for key 'ui'".format( dict_sig['ui'])) self.wdg_dict2ui( ) # update wordlengths in UI and set RUN button to 'changed' self.sig_tx.emit({'sender': __name__, 'fx_sim': 'specs_changed'}) return #------------------------------------------------------------------------------ def _construct_UI(self): """ Intitialize the main GUI, consisting of: - A combo box to select the filter topology and an image of the topology - The input quantizer - The UI of the fixpoint filter widget - Simulation and export buttons """ #------------------------------------------------------------------------------ # Define frame and layout for the dynamically updated filter widget # The actual filter widget is instantiated in self.set_fixp_widget() later on self.layH_fx_wdg = QHBoxLayout() #self.layH_fx_wdg.setContentsMargins(*params['wdg_margins']) frmHDL_wdg = QFrame(self) frmHDL_wdg.setLayout(self.layH_fx_wdg) #frmHDL_wdg.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum) #------------------------------------------------------------------------------ # Initialize fixpoint filter combobox, title and description #------------------------------------------------------------------------------ self.cmb_wdg_fixp = QComboBox(self) self.cmb_wdg_fixp.setSizeAdjustPolicy(QComboBox.AdjustToContents) self.lblTitle = QLabel("not set", self) self.lblTitle.setWordWrap(True) self.lblTitle.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed) layHTitle = QHBoxLayout() layHTitle.addWidget(self.cmb_wdg_fixp) layHTitle.addWidget(self.lblTitle) self.frmTitle = QFrame(self) self.frmTitle.setLayout(layHTitle) self.frmTitle.setContentsMargins(*params['wdg_margins']) #------------------------------------------------------------------------------ # Input and Output Quantizer #------------------------------------------------------------------------------ # - instantiate widgets for input and output quantizer # - pass the quantization (sub-?) dictionary to the constructor #------------------------------------------------------------------------------ self.wdg_w_input = UI_W(self, q_dict=fb.fil[0]['fxqc']['QI'], id='w_input', label='', lock_visible=True) self.wdg_w_input.sig_tx.connect(self.process_sig_rx) cmb_q = ['round', 'floor', 'fix'] self.wdg_w_output = UI_W(self, q_dict=fb.fil[0]['fxqc']['QO'], id='w_output', label='') self.wdg_w_output.sig_tx.connect(self.process_sig_rx) self.wdg_q_output = UI_Q( self, q_dict=fb.fil[0]['fxqc']['QO'], id='q_output', label='Output Format <i>Q<sub>Y </sub></i>:', cmb_q=cmb_q, cmb_ov=['wrap', 'sat']) self.wdg_q_output.sig_tx.connect(self.sig_rx) if HAS_DS: cmb_q.append('dsm') self.wdg_q_input = UI_Q( self, q_dict=fb.fil[0]['fxqc']['QI'], id='q_input', label='Input Format <i>Q<sub>X </sub></i>:', cmb_q=cmb_q) self.wdg_q_input.sig_tx.connect(self.sig_rx) # Layout and frame for input quantization layVQiWdg = QVBoxLayout() layVQiWdg.addWidget(self.wdg_q_input) layVQiWdg.addWidget(self.wdg_w_input) frmQiWdg = QFrame(self) #frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken) frmQiWdg.setLayout(layVQiWdg) frmQiWdg.setContentsMargins(*params['wdg_margins']) # Layout and frame for output quantization layVQoWdg = QVBoxLayout() layVQoWdg.addWidget(self.wdg_q_output) layVQoWdg.addWidget(self.wdg_w_output) frmQoWdg = QFrame(self) #frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken) frmQoWdg.setLayout(layVQoWdg) frmQoWdg.setContentsMargins(*params['wdg_margins']) #------------------------------------------------------------------------------ # Dynamically updated image of filter topology #------------------------------------------------------------------------------ # label is a placeholder for image self.lbl_fixp_img = QLabel("img not set", self) #self.lbl_fixp_img.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Minimum) self.embed_fixp_img(self.no_fx_filter_img) layHImg = QHBoxLayout() layHImg.setContentsMargins(0, 0, 0, 0) layHImg.addWidget(self.lbl_fixp_img) #, Qt.AlignCenter) self.frmImg = QFrame(self) self.frmImg.setLayout(layHImg) self.frmImg.setContentsMargins(*params['wdg_margins']) self.resize_img() #------------------------------------------------------------------------------ # Simulation and export Buttons #------------------------------------------------------------------------------ self.butExportHDL = QPushButton(self) self.butExportHDL.setToolTip( "Export fixpoint filter in Verilog format.") self.butExportHDL.setText("Create HDL") self.butSimHDL = QPushButton(self) self.butSimHDL.setToolTip("Start migen fixpoint simulation.") self.butSimHDL.setText("Sim. HDL") self.butSimFxPy = QPushButton(self) self.butSimFxPy.setToolTip("Simulate filter with fixpoint effects.") self.butSimFxPy.setText("Sim. FixPy") self.layHHdlBtns = QHBoxLayout() self.layHHdlBtns.addWidget(self.butSimFxPy) self.layHHdlBtns.addWidget(self.butSimHDL) self.layHHdlBtns.addWidget(self.butExportHDL) # This frame encompasses the HDL buttons sim and convert frmHdlBtns = QFrame(self) #frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken) frmHdlBtns.setLayout(self.layHHdlBtns) frmHdlBtns.setContentsMargins(*params['wdg_margins']) # ------------------------------------------------------------------- # Top level layout # ------------------------------------------------------------------- splitter = QSplitter(self) splitter.setOrientation(Qt.Vertical) splitter.addWidget(frmHDL_wdg) splitter.addWidget(frmQoWdg) splitter.addWidget(self.frmImg) # setSizes uses absolute pixel values, but can be "misused" by specifying values # that are way too large: in this case, the space is distributed according # to the _ratio_ of the values: splitter.setSizes([3000, 3000, 5000]) layVMain = QVBoxLayout() layVMain.addWidget(self.frmTitle) layVMain.addWidget(frmHdlBtns) layVMain.addWidget(frmQiWdg) layVMain.addWidget(splitter) layVMain.addStretch() layVMain.setContentsMargins(*params['wdg_margins']) self.setLayout(layVMain) #---------------------------------------------------------------------- # GLOBAL SIGNALS & SLOTs #---------------------------------------------------------------------- self.sig_rx.connect(self.process_sig_rx) #---------------------------------------------------------------------- # LOCAL SIGNALS & SLOTs & EVENTFILTERS #---------------------------------------------------------------------- # monitor events and generate sig_resize event when resized self.lbl_fixp_img.installEventFilter(self) # ... then redraw image when resized self.sig_resize.connect(self.resize_img) self.cmb_wdg_fixp.currentIndexChanged.connect(self._update_fixp_widget) self.butExportHDL.clicked.connect(self.exportHDL) self.butSimHDL.clicked.connect(self.fx_sim_init) #---------------------------------------------------------------------- inst_wdg_list = self._update_filter_cmb() if len(inst_wdg_list) == 0: logger.warning("No fixpoint filters found!") else: logger.debug("Imported {0:d} fixpoint filters:\n{1}".format( len(inst_wdg_list.split("\n")) - 1, inst_wdg_list)) self._update_fixp_widget() #------------------------------------------------------------------------------ def _update_filter_cmb(self): """ (Re-)Read list of available fixpoint filters for a given filter design every time a new filter design is selected. Then try to import the fixpoint designs in the list and populate the fixpoint implementation combo box `self.cmb_wdg_fixp` when successfull. """ inst_wdg_str = "" # full names of successfully instantiated widgets for logging last_fx_wdg = qget_cmb_box( self.cmb_wdg_fixp, data=False) # remember last fx widget setting self.cmb_wdg_fixp.clear() fc = fb.fil[0]['fc'] if 'fix' in fb.filter_classes[fc]: for class_name in fb.filter_classes[fc]['fix']: # get class name try: # construct module + class name mod_class_name = fb.fixpoint_classes[class_name][ 'mod'] + '.' + class_name disp_name = fb.fixpoint_classes[class_name][ 'name'] # # and display name self.cmb_wdg_fixp.addItem(disp_name, mod_class_name) inst_wdg_str += '\t' + class_name + ' : ' + mod_class_name + '\n' except AttributeError as e: logger.warning('Widget "{0}":\n{1}'.format(class_name, e)) self.embed_fixp_img(self.no_fx_filter_img) continue except KeyError as e: logger.warning( "No fixpoint filter for filter type {0} available.". format(e)) self.embed_fixp_img(self.no_fx_filter_img) continue # restore last fxp widget if possible idx = self.cmb_wdg_fixp.findText(last_fx_wdg) # set to idx 0 if not found (returned -1) self.cmb_wdg_fixp.setCurrentIndex(max(idx, 0)) else: # no fixpoint widget self.embed_fixp_img(self.no_fx_filter_img) return inst_wdg_str #------------------------------------------------------------------------------ def eventFilter(self, source, event): """ Filter all events generated by monitored QLabel, only resize events are processed here, generating a `sig_resize` signal. All other events are passed on to the next hierarchy level. """ if event.type() == QEvent.Resize: self.sig_resize.emit() # Call base class method to continue normal event processing: return super(Input_Fixpoint_Specs, self).eventFilter(source, event) #------------------------------------------------------------------------------ def embed_fixp_img(self, img_file): """ Embed image as self.img_fixp, either in png or svg format Parameters: img_file: str path and file name to image file """ if not os.path.isfile(img_file): logger.warning("Image file {0} doesn't exist.".format(img_file)) img_file = self.default_fx_img # _, file_extension = os.path.splitext(self.fx_wdg_inst.img_name) _, file_extension = os.path.splitext(img_file) if file_extension == '.png': self.img_fixp = QPixmap(img_file) #self.lbl_fixp_img.setPixmap(QPixmap(self.img_fixp)) # fixed size # elif file_extension == '.svg': # self.img_fixp = QtSvg.QSvgWidget(img_file) else: logger.error( 'Unknown file extension "{0}"!'.format(file_extension)) self.resize_img() #------------------------------------------------------------------------------ def resize_img(self): """ Triggered when self (the widget) is resized, consequently the image inside QLabel is resized to completely fill the label while keeping the aspect ratio. This doesn't really work at the moment. """ if hasattr(self.parent, "width"): # needed for module test par_w, par_h = self.parent.width(), self.parent.height() else: par_w, par_h = 300, 700 # fixed size for module testself.lbl_img_fixp lbl_w, lbl_h = self.lbl_fixp_img.width(), self.lbl_fixp_img.height() img_w, img_h = self.img_fixp.width(), self.img_fixp.height() if img_w > 10: max_h = int(max(np.floor(img_h * par_w / img_w) - 15, 20)) else: max_h = 200 logger.debug("img size: {0},{1}, frm size: {2},{3}, max_h: {4}".format( img_w, img_h, par_w, par_h, max_h)) # The following doesn't work because the width of the parent widget can grow # with the image size # img_scaled = self.img_fixp.scaled(self.lbl_fixp_img.size(), Qt.KeepAspectRatio, Qt.SmoothTransformation) img_scaled = self.img_fixp.scaledToHeight(max_h, Qt.SmoothTransformation) #img_scaled = self.img_fixp.scaledToHeight(max_h) self.lbl_fixp_img.setPixmap(img_scaled) #------------------------------------------------------------------------------ def _update_fixp_widget(self): """ This method is called at the initialization of the widget and when a new fixpoint filter implementation is selected from the combo box: - Destruct old instance of fixpoint filter widget `self.fx_wdg_inst` - Import and instantiate new fixpoint filter widget e.g. after changing the filter topology as - Try to load image for filter topology - Update the UI of the widget - Try to instantiate HDL filter as `self.fx_wdg_inst.fixp_filter` with dummy data """ def _disable_fx_wdg(self): if hasattr( self, "fx_wdg_inst" ) and self.fx_wdg_inst is not None: # is a fixpoint widget loaded? try: self.layH_fx_wdg.removeWidget( self.fx_wdg_inst) # remove widget from layout self.fx_wdg_inst.deleteLater( ) # delete QWidget when scope has been left except AttributeError as e: logger.error("Destructing UI failed!\n{0}".format(e)) self.fx_wdg_found = False self.butSimFxPy.setVisible(False) self.butSimHDL.setEnabled(False) self.butExportHDL.setEnabled(False) #self.layH_fx_wdg.setVisible(False) self.img_fixp = self.embed_fixp_img(self.no_fx_filter_img) self.lblTitle.setText("") self.fx_wdg_inst = None # destruct old fixpoint widget instance _disable_fx_wdg(self) # instantiate new fixpoint widget class as self.fx_wdg_inst cmb_wdg_fx_cur = qget_cmb_box(self.cmb_wdg_fixp, data=False) if cmb_wdg_fx_cur: # at least one valid fixpoint widget found self.fx_wdg_found = True # get list [module name and path, class name] fx_mod_class_name = qget_cmb_box(self.cmb_wdg_fixp, data=True).rsplit('.', 1) fx_mod = importlib.import_module( fx_mod_class_name[0]) # get module fx_wdg_class = getattr(fx_mod, fx_mod_class_name[1]) # get class #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ self.fx_wdg_inst = fx_wdg_class( self) # instantiate the fixpoint widget #++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ self.layH_fx_wdg.addWidget(self.fx_wdg_inst, stretch=1) # and add it to layout self.fx_wdg_inst.setVisible(True) # Doesn't work at the moment, combo box becomes inaccessible # try: # self.fx_wdg_inst = fx_wdg_class(self) # instantiate the widget # self.layH_fx_wdg.addWidget(self.fx_wdg_inst, stretch=1) # and add it to layout # except KeyError as e: # logger.warning('Key Error {0} in fixpoint filter \n{1}'\ # .format(e, fx_mod_name + "." + cmb_wdg_fx_cur)) # _disable_fx_wdg(self) # return self.wdg_dict2ui( ) # initialize the fixpoint subwidgets from the fxqc_dict #---- connect signals to fx_wdg_inst ---- if hasattr(self.fx_wdg_inst, "sig_rx"): self.sig_rx.connect(self.fx_wdg_inst.sig_rx) if hasattr(self.fx_wdg_inst, "sig_tx"): self.fx_wdg_inst.sig_tx.connect(self.sig_rx) #---- get name of new fixpoint filter image ---- if not (hasattr(self.fx_wdg_inst, "img_name") and self.fx_wdg_inst.img_name): # is an image name defined? img_file = self.default_fx_img else: file_path = os.path.dirname( fx_mod.__file__ ) # get path of imported fixpoint widget and img_file = os.path.join(file_path, self.fx_wdg_inst.img_name ) # construct full image name from it #---- instantiate and scale graphic of filter topology ---- self.embed_fixp_img(img_file) #---- set title and description for filter self.lblTitle.setText(self.fx_wdg_inst.title) #--- try to reference Python fixpoint filter instance ----- # if hasattr(self.fx_wdg_inst,'fxpy_filter'): # self.fxpy_filter_inst = self.fx_wdg_inst.fxpy_filter # self.butSimFxPy.setEnabled(True) # else: # self.butSimFxPy.setVisible(False) #--- Check whether fixpoint widget contains HDL filters ----- if hasattr(self.fx_wdg_inst, 'fixp_filter'): self.butExportHDL.setEnabled( hasattr(self.fx_wdg_inst, "to_verilog")) self.butSimHDL.setEnabled(hasattr(self.fx_wdg_inst, "run_sim")) self.update_fxqc_dict() self.sig_tx.emit({ 'sender': __name__, 'fx_sim': 'specs_changed' }) else: self.butSimHDL.setEnabled(False) self.butExportHDL.setEnabled(False) else: _disable_fx_wdg(self) #------------------------------------------------------------------------------ def wdg_dict2ui(self): """ Trigger an update of the fixpoint widget UI when view (i.e. fixpoint coefficient format) or data have been changed outside this class. Additionally, pass the fixpoint quantization widget to update / restore other subwidget settings. Set the RUN button to "changed". """ # fb.fil[0]['fxqc']['QCB'].update({'scale':(1 << fb.fil[0]['fxqc']['QCB']['W'])}) self.wdg_q_input.dict2ui(fb.fil[0]['fxqc']['QI']) self.wdg_q_output.dict2ui(fb.fil[0]['fxqc']['QO']) self.wdg_w_input.dict2ui(fb.fil[0]['fxqc']['QI']) self.wdg_w_output.dict2ui(fb.fil[0]['fxqc']['QO']) if self.fx_wdg_found and hasattr(self.fx_wdg_inst, "dict2ui"): self.fx_wdg_inst.dict2ui() # dict_sig = {'sender':__name__, 'fx_sim':'specs_changed'} # self.sig_tx.emit(dict_sig) qstyle_widget(self.butSimHDL, "changed") #------------------------------------------------------------------------------ def update_fxqc_dict(self): """ Update the fxqc dictionary before simulation / HDL generation starts. """ if self.fx_wdg_found: # get a dict with the coefficients and fixpoint settings from fixpoint widget if hasattr(self.fx_wdg_inst, "ui2dict"): fb.fil[0]['fxqc'].update(self.fx_wdg_inst.ui2dict()) logger.debug("update fxqc: \n{0}".format( pprint_log(fb.fil[0]['fxqc']))) else: logger.error("No fixpoint widget found!") #------------------------------------------------------------------------------ def exportHDL(self): """ Synthesize HDL description of filter """ if not hasattr(self.fx_wdg_inst, 'construct_fixp_filter'): logger.warning( 'Fixpoint widget has no method "construct_fixp_filter", aborting.' ) return dlg = QFD(self) # instantiate file dialog object file_types = "Verilog (*.v)" dlg.setDefaultSuffix( 'v' ) # needed for overwrite confirmation when name is entered without suffix dlg.setWindowTitle('Export Vlog') dlg.setNameFilter(file_types) dlg.setDirectory(dirs.save_dir) dlg.setAcceptMode( QFD.AcceptSave) # set mode "save file" instead "open file" dlg.setOption(QFD.DontConfirmOverwrite, False) if dlg.exec_() == QFD.Accepted: hdl_file = qstr(dlg.selectedFiles()[0]) # hdl_type = extract_file_ext(qstr(dlg.selectedNameFilter()))[0] # ============================================================================= # # static method getSaveFileName_() is simple but unflexible # hdl_file, hdl_filter = dlg.getSaveFileName_( # caption="Save Verilog netlist as (this also defines the module name)", # directory=dirs.save_dir, filter=file_types) # hdl_file = qstr(hdl_file) # if hdl_file != "": # "operation cancelled" returns an empty string # # return '.v' or '.vhd' depending on filetype selection: # # hdl_type = extract_file_ext(qstr(hdl_filter))[0] # # sanitized dir + filename + suffix. The filename suffix is replaced # # by `v` later. # hdl_file = os.path.normpath(hdl_file) # complete path + file name # ============================================================================= hdl_dir_name = os.path.dirname( hdl_file) # extract the directory path if not os.path.isdir( hdl_dir_name): # create directory if it doesn't exist os.mkdir(hdl_dir_name) dirs.save_dir = hdl_dir_name # make this directory the new default / base dir hdl_file_name = os.path.splitext(os.path.basename(hdl_file))[0] hdl_full_name = os.path.join(hdl_dir_name, hdl_file_name + ".v") vlog_mod_name = re.sub( r'\W+', '', hdl_file_name).lower() # remove all non-alphanumeric chars logger.info( 'Creating hdl_file "{0}"\n\twith top level module "{1}"'. format(hdl_full_name, vlog_mod_name)) try: self.update_fxqc_dict() self.fx_wdg_inst.construct_fixp_filter() code = self.fx_wdg_inst.to_verilog(name=vlog_mod_name) #logger.info(str(code)) # print verilog code to console with io.open(hdl_full_name, 'w', encoding="utf8") as f: f.write(str(code)) logger.info("HDL conversion finished!") except (IOError, TypeError) as e: logger.warning(e) ##------------------------------------------------------------------------------ # def fx_sim_py(self): # """ # Start fix-point simulation: Send the ``fxqc_dict`` # containing all quantization information and request a stimulus signal # Not implemented yet # """ # try: # logger.info("Started python fixpoint simulation") # self.update_fxqc_dict() # self.fxpyfilter.setup(fb.fil[0]['fxqc']) # setup filter instance # dict_sig = {'sender':__name__, 'fx_sim':'get_stimulus'} # self.sig_tx.emit(dict_sig) # # except AttributeError as e: # logger.warning("Fixpoint stimulus generation failed:\n{0}".format(e)) # return #------------------------------------------------------------------------------ def fx_sim_init(self): """ Initialize fix-point simulation: - Update the `fxqc_dict` containing all quantization information - Setup a filter instance for migen simulation - Request a stimulus signal """ if not hasattr(self.fx_wdg_inst, 'construct_fixp_filter'): logger.error( 'Fixpoint widget has no method "construct_fixp_filter", aborting.' ) self.sig_tx.emit({'sender': __name__, 'fx_sim': 'error'}) return try: logger.info("Fixpoint simulation started") self.t_start = time.process_time() self.update_fxqc_dict() self.fx_wdg_inst.construct_fixp_filter() # setup filter instance dict_sig = {'sender': __name__, 'fx_sim': 'get_stimulus'} self.sig_tx.emit(dict_sig) except ValueError as e: # exception logger.error( 'Fixpoint stimulus generation failed during "init" for dict\n{0}' '\nwith "{1} "'.format(pprint_log(dict_sig), e)) return #------------------------------------------------------------------------------ def fx_sim_set_stimulus(self, dict_sig): """ - Get fixpoint stimulus from `dict_sig` in integer format - Pass it to the fixpoint filter and calculate the fixpoint response - Send the reponse to the plotting widget """ try: logger.debug( 'Starting fixpoint simulation with stimulus from "{0}":\n\tfx_stimulus:{1}' '\n\tStimuli: Shape {2} of type "{3}"'.format( dict_sig['sender'], pprint_log(dict_sig['fx_stimulus'], tab=" "), np.shape(dict_sig['fx_stimulus']), dict_sig['fx_stimulus'].dtype, )) self.t_stim = time.process_time() logger.info("Fixpoint simulation [{0:5.3g} ms]: Stimuli generated"\ .format((self.t_stim-self.t_start)*1000)) # Run fixpoint simulation and return the results as integer values: self.fx_results = self.fx_wdg_inst.run_sim( dict_sig['fx_stimulus']) # Run the simulation self.t_resp = time.process_time() if len(self.fx_results) == 0: logger.warning("Fixpoint simulation returned empty results!") else: #logger.debug("fx_results: {0}"\ # .format(pprint_log(self.fx_results, tab= " "))) logger.debug('Fixpoint simulation successful for dict\n{0}' '\tStimuli: Shape {1} of type "{2}"' '\n\tResponse: Shape {3} of type "{4}"'\ .format(pprint_log(dict_sig), np.shape(dict_sig['fx_stimulus']), dict_sig['fx_stimulus'].dtype, np.shape(self.fx_results), type(self.fx_results) )) logger.info('Fixpoint simulation [{0:5.3g} ms]: Response calculated'\ .format((self.t_resp - self.t_stim)*1000)) #TODO: fixed point / integer to float conversion? #TODO: color push-button to show state of simulation #TODO: add QTimer single shot # self.timer_id = QtCore.QTimer() # self.timer_id.setSingleShot(True) # # kill simulation after some idle time, also add a button for this # self.timer_id.timeout.connect(self.kill_sim) except ValueError as e: logger.error("Simulator error {0}".format(e)) self.fx_results = None qstyle_widget(self.butSimHDL, "error") self.sig_tx.emit({'sender': __name__, 'fx_sim': 'error'}) return except AssertionError as e: logger.error('Fixpoint simulation failed for dict\n{0}' '\twith msg. "{1}"\n\tStimuli: Shape {2} of type "{3}"' '\n\tResponse: Shape {4} of type "{5}"'\ .format(pprint_log(dict_sig), e, np.shape(dict_sig['fx_stimulus']), dict_sig['fx_stimulus'].dtype, np.shape(self.fx_results), type(self.fx_results) )) self.fx_results = None qstyle_widget(self.butSimHDL, "error") self.sig_tx.emit({'sender': __name__, 'fx_sim': 'error'}) return logger.debug("Sending fixpoint results") dict_sig = { 'sender': __name__, 'fx_sim': 'set_results', 'fx_results': self.fx_results } self.sig_tx.emit(dict_sig) qstyle_widget(self.butSimHDL, "normal") return