def setupHDL(self, file_name="", dir_name=""):
"""
Setup instance of myHDL object with word lengths and coefficients
"""
self.qI_i = safe_eval(self.ledWIInput.text(),
return_type='int',
sign='pos')
self.qF_i = safe_eval(self.ledWFInput.text(),
return_type='int',
sign='pos')
self.ledWIInput.setText(qstr(self.qI_i))
self.ledWFInput.setText(qstr(self.qF_i))
self.qI_o = safe_eval(self.ledWIOutput.text(),
return_type='int',
sign='pos')
self.qF_o = safe_eval(self.ledWFOutput.text(),
return_type='int',
sign='pos')
self.ledWIOutput.setText(qstr(self.qI_o))
self.ledWFOutput.setText(qstr(self.qF_o))
qQuant_o = self.cmbQuant_o.currentText()
qOvfl_o = self.cmbOvfl_o.currentText()
q_obj_o = {
'WI': self.qI_o,
'WF': self.qF_o,
'quant': qQuant_o,
'ovfl': qOvfl_o
}
myQ_o = fix.Fixed(q_obj_o) # instantiate fixed-point object
self.W = (self.qI_i + self.qF_i + 1, self.qF_i
) # Matlab format: (W,WF)
# @todo: always use sos? The filter object is setup to always
# @todo: generate a second order filter
# get filter coefficients etc. from filter dict
coeffs = fb.fil[0]['ba']
zpk = fb.fil[0]['zpk']
sos = fb.fil[0]['sos']
logger.info("W = {0}".format(self.W))
logger.info('b = {0}'.format(coeffs[0][0:3]))
logger.info('a = {0}'.format(coeffs[1][0:3]))
# =============== adapted from C. Felton's SIIR example =============
self.flt = FilterIIR(
b=np.array(coeffs[0][0:3]),
a=np.array(coeffs[1][0:3]),
#sos = sos, doesn't work yet
word_format=(self.W[0], 0, self.W[1]))
self.flt.hdl_name = file_name
self.flt.hdl_directory = dir_name
def setupHDL(self, file_name = "", dir_name = ""):
"""
Setup instance of myHDL object with word lengths and coefficients
"""
qI_i = int(self.ledWIInput.text())
qF_i = int(self.ledWFInput.text())
qI_o = int(self.ledWIOutput.text())
qF_o = int(self.ledWFOutput.text())
qQuant_o = self.cmbQuant_o.currentText()
qOvfl_o = self.cmbOvfl_o.currentText()
q_obj_o = {'WI':qI_o, 'WF': qF_o, 'quant': qQuant_o, 'ovfl': qOvfl_o}
myQ_o = fix.Fixed(q_obj_o) # instantiate fixed-point object
self.W = (qI_i + qF_i + 1, qF_i) # Matlab format: (W,WF)
# @todo: always use sos? The filter object is setup to always
# @todo: generate a second order filter
# get filter coefficients etc. from filter dict
coeffs = fb.fil[0]['ba']
zpk = fb.fil[0]['zpk']
sos = fb.fil[0]['sos']
print("W = ", self.W)
print('b =', coeffs[0][0:3])
print('a =', coeffs[1][0:3])
# =============== adapted from C. Felton's SIIR example =============
self.flt = FilterIIR(b=np.array(coeffs[0][0:3]),
a=np.array(coeffs[1][0:3]),
#sos = sos, doesn't work yet
word_format=(self.W[0], 0, self.W[1]))
self.flt.hdl_name = file_name
self.flt.hdl_directory = dir_name
class HDLSpecs(QWidget):
"""
Create the widget for entering exporting / importing / saving / loading data
"""
sigFilterDesigned = pyqtSignal()
def __init__(self, parent):
super(HDLSpecs, self).__init__(parent)
self.initUI()
def initUI(self):
"""
Intitialize the main GUI, consisting of:
"""
# ============== UI Layout =====================================
bfont = QFont()
# font.setPointSize(11)
bfont.setBold(True)
bifont = QFont()
bifont.setBold(True)
bifont.setItalic(True)
ifont = QFont()
ifont.setItalic(True)
lblMsg = QLabel(
"Warning! This feature is only experimental, "
"only HDL code for second order IIR filters under the name siir_hdl.v "
" resp. siir_hdl.vhd are created at the moment. Files are saved "
" in the pyFDA root directory.", self)
lblMsg.setWordWrap(True)
layHMsg = QHBoxLayout()
layHMsg.addWidget(lblMsg)
self.frmMsg = QFrame(self)
self.frmMsg.setLayout(layHMsg)
self.frmMsg.setContentsMargins(*params['wdg_margins'])
# =============================================================================
# UI for quantization
# =============================================================================
lblHBtnsMsg = QLabel("Fixpoint signal / coeff. formats as WI.WF:",
self)
lblHBtnsMsg.setFont(bfont)
self.layHBtnsMsg = QHBoxLayout()
self.layHBtnsMsg.addWidget(lblHBtnsMsg)
ledMaxWid = 30 # Max. Width of QLineEdit fields
qQuant = ['none', 'round', 'fix', 'floor']
qOvfl = ['none', 'wrap', 'sat']
tipOvfl = "Select overflow behaviour."
tipQuant = "Select the kind of quantization."
tipWI = "Specify number of integer bits."
tipWF = "Specify number of fractional bits."
lblQ = "Quant.:"
lblOv = "Ovfl.:"
# -------------------------------------------------------------------
# subUI -- self.layHButtonsHDL_i -- for input format
# -------------------------------------------------------------------
self.lblWInput = QLabel("Input Format:", self)
self.lblWInput.setFont(bifont)
self.ledWIInput = QLineEdit(self)
self.ledWIInput.setToolTip(tipWI)
self.ledWIInput.setText("0")
self.ledWIInput.setMaxLength(2) # maximum of 2 digits
self.ledWIInput.setFixedWidth(
ledMaxWid) # width of lineedit in points(?)
self.lblDotInput = QLabel(".", self)
self.ledWFInput = QLineEdit(self)
self.ledWFInput.setToolTip(tipWF)
self.ledWFInput.setText("15")
self.ledWFInput.setMaxLength(2) # maximum of 2 digits
self.ledWFInput.setFixedWidth(
ledMaxWid) # width of lineedit in points(?)
self.layHButtonsHDL_i = QHBoxLayout()
self.layHButtonsHDL_i.addWidget(self.lblWInput)
self.layHButtonsHDL_i.addStretch()
self.layHButtonsHDL_i.addWidget(self.ledWIInput)
self.layHButtonsHDL_i.addWidget(self.lblDotInput)
self.layHButtonsHDL_i.addWidget(self.ledWFInput)
# -----------------------------------------------------------------------------
# subUI -- self.layHButtonsHDL_cc -- for coefficient format
# -----------------------------------------------------------------------------
enb_coeff = False
self.lblQCoeff = QLabel("Coeff. Format:", self)
self.lblQCoeff.setFont(bifont)
self.lblQCoeff.setEnabled(enb_coeff)
self.ledWICoeff = QLineEdit(self)
self.ledWICoeff.setToolTip(tipWI)
self.ledWICoeff.setText("0")
self.ledWICoeff.setMaxLength(2) # maximum of 2 digits
self.ledWICoeff.setFixedWidth(
ledMaxWid) # width of lineedit in points(?)
self.ledWICoeff.setEnabled(enb_coeff)
self.lblDotCoeff = QLabel(".", self)
self.ledWFCoeff = QLineEdit(self)
self.ledWFCoeff.setToolTip(tipWF)
self.ledWFCoeff.setText("15")
self.ledWFCoeff.setMaxLength(2) # maximum of 2 digits
# self.ledWFCoeff.setFixedWidth(30) # width of lineedit in points(?)
self.ledWFCoeff.setMaximumWidth(ledMaxWid)
self.ledWFCoeff.setEnabled(enb_coeff)
self.layHButtonsHDL_c = QHBoxLayout()
self.layHButtonsHDL_c.addWidget(self.lblQCoeff)
self.layHButtonsHDL_c.addStretch()
self.layHButtonsHDL_c.addWidget(self.ledWICoeff)
self.layHButtonsHDL_c.addWidget(self.lblDotCoeff)
self.layHButtonsHDL_c.addWidget(self.ledWFCoeff)
self.lblQuant_c = QLabel(lblQ, self)
self.lblQuant_c.setEnabled(enb_coeff)
self.cmbQuant_c = QComboBox(self)
self.cmbQuant_c.addItems(qQuant)
self.cmbQuant_c.setToolTip(tipQuant)
self.cmbQuant_c.setEnabled(enb_coeff)
self.lblQOvfl_c = QLabel(lblOv, self)
self.lblQOvfl_c.setEnabled(enb_coeff)
self.cmbOvfl_c = QComboBox(self)
self.cmbOvfl_c.addItems(qOvfl)
self.cmbOvfl_c.setToolTip(tipOvfl)
self.cmbOvfl_c.setEnabled(enb_coeff)
# ComboBox size is adjusted automatically to fit the longest element
self.cmbQuant_c.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.cmbOvfl_c.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.layHButtonsHDL_cc = QHBoxLayout()
self.layHButtonsHDL_cc.addWidget(self.lblQOvfl_c)
self.layHButtonsHDL_cc.addWidget(self.cmbOvfl_c)
self.layHButtonsHDL_cc.addStretch()
self.layHButtonsHDL_cc.addWidget(self.lblQuant_c)
self.layHButtonsHDL_cc.addWidget(self.cmbQuant_c)
self.layHButtonsHDL_cc.setEnabled(False)
# -----------------------------------------------------------------------------
# subUI -- self.layHButtonsHDL_ac -- for accumulator format / overflow behaviour
# -----------------------------------------------------------------------------
# ---------- Accumulator format --------------
self.lblQAccu = QLabel("Accumulator Format:", self)
self.lblQAccu.setFont(bifont)
self.ledWIAccu = QLineEdit(self)
self.ledWIAccu.setToolTip(tipWI)
self.ledWIAccu.setText("0")
self.ledWIAccu.setMaxLength(2) # maximum of 2 digits
self.ledWIAccu.setFixedWidth(
ledMaxWid) # width of lineedit in points(?)
self.lblDotAccu = QLabel(".", self)
self.ledWFAccu = QLineEdit(self)
self.ledWFAccu.setToolTip(tipWF)
self.ledWFAccu.setText("15")
self.ledWFAccu.setMaxLength(2) # maximum of 2 digits
self.ledWFAccu.setFixedWidth(
ledMaxWid) # width of lineedit in points(?)
self.layHButtonsHDL_a = QHBoxLayout()
self.layHButtonsHDL_a.addWidget(self.lblQAccu)
self.layHButtonsHDL_a.addStretch()
self.layHButtonsHDL_a.addWidget(self.ledWIAccu)
self.layHButtonsHDL_a.addWidget(self.lblDotAccu)
self.layHButtonsHDL_a.addWidget(self.ledWFAccu)
# ---------- Accumulator overflow --------------
self.lblOvfl_a = QLabel(lblOv, self)
self.cmbOvfl_a = QComboBox(self)
self.cmbOvfl_a.addItems(qOvfl)
self.cmbOvfl_a.setToolTip(tipOvfl)
self.lblQuant_a = QLabel(lblQ, self)
self.cmbQuant_a = QComboBox(self)
self.cmbQuant_a.addItems(qQuant)
self.cmbQuant_a.setToolTip(tipQuant)
# ComboBox size is adjusted automatically to fit the longest element
self.cmbQuant_a.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.cmbOvfl_a.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.layHButtonsHDL_ac = QHBoxLayout()
self.layHButtonsHDL_ac.addWidget(self.lblOvfl_a)
self.layHButtonsHDL_ac.addWidget(self.cmbOvfl_a)
self.layHButtonsHDL_ac.addStretch()
self.layHButtonsHDL_ac.addWidget(self.lblQuant_a)
self.layHButtonsHDL_ac.addWidget(self.cmbQuant_a)
# -----------------------------------------------------------------------------
# subUI -- self.layHButtonsHDL_o -- for output format and overflow behaviour
# -----------------------------------------------------------------------------
enb_o_ui = False
self.lblQOutput = QLabel("Output Format:", self)
self.lblQOutput.setFont(bifont)
# self.lblQOutput.setEnabled(enb_o_ui)
self.ledWIOutput = QLineEdit(self)
self.ledWIOutput.setToolTip(tipWI)
self.ledWIOutput.setText("0")
self.ledWIOutput.setMaxLength(2) # maximum of 2 digits
self.ledWIOutput.setFixedWidth(
ledMaxWid) # width of lineedit in points(?)
# self.ledWIOutput.setEnabled(enb_o_ui)
self.lblDot_o = QLabel(".", self)
# self.lblDot_o.setEnabled(enb_o_ui)
self.ledWFOutput = QLineEdit(self)
self.ledWFOutput.setToolTip(tipWF)
self.ledWFOutput.setText("15")
self.ledWFOutput.setMaxLength(2) # maximum of 2 digits
self.ledWFOutput.setFixedWidth(
ledMaxWid) # width of lineedit in points(?)
# self.ledWFOutput.setEnabled(enb_o_ui)
self.layHButtonsHDL_o = QHBoxLayout()
self.layHButtonsHDL_o.addWidget(self.lblQOutput)
self.layHButtonsHDL_o.addStretch()
self.layHButtonsHDL_o.addWidget(self.ledWIOutput)
self.layHButtonsHDL_o.addWidget(self.lblDot_o)
self.layHButtonsHDL_o.addWidget(self.ledWFOutput)
# This doesn't work - need to set a parent widget like WFrame
self.layHButtonsHDL_o.setEnabled(False)
# ---------- Accumulator overflow --------------
self.lblQOvfl_o = QLabel(lblOv, self)
self.lblQOvfl_o.setEnabled(enb_o_ui)
self.lblQuant_o = QLabel(lblQ, self)
self.lblQuant_o.setEnabled(enb_o_ui)
self.cmbQuant_o = QComboBox(self)
self.cmbQuant_o.addItems(qQuant)
self.cmbQuant_o.setToolTip(tipQuant)
self.cmbQuant_o.setEnabled(enb_o_ui)
self.cmbOvfl_o = QComboBox(self)
self.cmbOvfl_o.addItems(qOvfl)
self.cmbOvfl_o.setToolTip(tipOvfl)
self.cmbOvfl_o.setEnabled(enb_o_ui)
# ComboBox size is adjusted automatically to fit the longest element
self.cmbQuant_o.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.cmbOvfl_o.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.layHButtonsHDL_oc = QHBoxLayout()
self.layHButtonsHDL_oc.addWidget(self.lblQOvfl_o)
self.layHButtonsHDL_oc.addWidget(self.cmbOvfl_o)
self.layHButtonsHDL_oc.addStretch()
self.layHButtonsHDL_oc.addWidget(self.lblQuant_o)
self.layHButtonsHDL_oc.addWidget(self.cmbQuant_o)
self.butExportHDL = QPushButton(self)
self.butExportHDL.setToolTip("Create VHDL and Verilog files.")
self.butExportHDL.setText("Create HDL")
self.butSimFixPoint = QPushButton(self)
self.butSimFixPoint.setToolTip(
"Simulate filter with fixpoint effects.")
self.butSimFixPoint.setText("Simulate")
self.layHButtonsHDL_h = QHBoxLayout()
self.layHButtonsHDL_h.addWidget(self.butSimFixPoint)
self.layHButtonsHDL_h.addWidget(self.butExportHDL)
# -------------------------------------------------------------------
layVBtns = QVBoxLayout()
layVBtns.addLayout(self.layHBtnsMsg)
layVBtns.addLayout(self.layHButtonsHDL_i)
layVBtns.addLayout(self.layHButtonsHDL_c)
layVBtns.addLayout(self.layHButtonsHDL_cc)
layVBtns.addLayout(self.layHButtonsHDL_a)
layVBtns.addLayout(self.layHButtonsHDL_ac)
layVBtns.addLayout(self.layHButtonsHDL_o)
layVBtns.addLayout(self.layHButtonsHDL_oc)
layVBtns.addLayout(self.layHButtonsHDL_h)
# -------------------------------------------------------------------
# This frame encompasses all the buttons
frmBtns = QFrame(self)
frmBtns.setFrameStyle(QFrame.StyledPanel | QFrame.Sunken)
frmBtns.setLayout(layVBtns)
# -------------------------------------------------------------------
# Top level layout
# -------------------------------------------------------------------
layVMain = QVBoxLayout()
layVMain.addWidget(self.frmMsg)
# layVMain.addWidget(self.frmFixpoint)
layVMain.addWidget(frmBtns)
layVMain.setContentsMargins(*params['wdg_margins'])
layVMain.addStretch()
self.setLayout(layVMain)
#----------------------------------------------------------------------
# SIGNALS & SLOTs
#----------------------------------------------------------------------
self.butExportHDL.clicked.connect(self.exportHDL)
self.butSimFixPoint.clicked.connect(self.simFixPoint)
#----------------------------------------------------------------------
self.update_UI()
#------------------------------------------------------------------------------
def update_UI(self):
"""
Update the UI after changing the filter class
"""
if hasattr(ff.fil_inst, 'hdl'):
self.butExportHDL.setEnabled('iir_sos' in ff.fil_inst.hdl)
self.butSimFixPoint.setEnabled('iir_sos' in ff.fil_inst.hdl)
else:
self.butExportHDL.setEnabled(False)
self.butSimFixPoint.setEnabled(False)
#------------------------------------------------------------------------------
def setupHDL(self, file_name="", dir_name=""):
"""
Setup instance of myHDL object with word lengths and coefficients
"""
qI_i = int(self.ledWIInput.text())
qF_i = int(self.ledWFInput.text())
qI_o = int(self.ledWIOutput.text())
qF_o = int(self.ledWFOutput.text())
qQuant_o = self.cmbQuant_o.currentText()
qOvfl_o = self.cmbOvfl_o.currentText()
q_obj_o = {'WI': qI_o, 'WF': qF_o, 'quant': qQuant_o, 'ovfl': qOvfl_o}
myQ_o = fix.Fixed(q_obj_o) # instantiate fixed-point object
self.W = (qI_i + qF_i + 1, qF_i) # Matlab format: (W,WF)
# @todo: always use sos? The filter object is setup to always
# @todo: generate a second order filter
# get filter coefficients etc. from filter dict
coeffs = fb.fil[0]['ba']
zpk = fb.fil[0]['zpk']
sos = fb.fil[0]['sos']
print("W = ", self.W)
print('b =', coeffs[0][0:3])
print('a =', coeffs[1][0:3])
# =============== adapted from C. Felton's SIIR example =============
self.flt = FilterIIR(
b=np.array(coeffs[0][0:3]),
a=np.array(coeffs[1][0:3]),
#sos = sos, doesn't work yet
word_format=(self.W[0], 0, self.W[1]))
self.flt.hdl_name = file_name
self.flt.hdl_directory = dir_name
#------------------------------------------------------------------------------
def exportHDL(self):
"""
Synthesize HDL description of filter using myHDL module
"""
dlg = QFD(self) # instantiate file dialog object
file_types = "Verilog (*.v);;VHDL (*.vhd)"
hdl_file, hdl_filter = dlg.getSaveFileName_(caption="Save HDL as",
directory=fb.base_dir,
filter=file_types)
hdl_file = os.path.normpath(str(hdl_file))
hdl_type = extract_file_ext(hdl_filter)[0] # return '.v' or '.vhd'
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)
fb.base_dir = hdl_dir_name # make this directory the new default / base dir
# return the filename without suffix
hdl_file_name = os.path.splitext(os.path.basename(hdl_file))[0]
self.setupHDL(file_name=hdl_file_name, dir_name=hdl_dir_name)
if str(hdl_type) == '.vhd':
self.flt.hdl_target = 'vhdl'
suffix = '.vhd'
else:
self.flt.hdl_target = 'verilog'
suffix = '.v'
logger.info('Creating hdl_file "{0}"'.format(
os.path.join(hdl_dir_name, hdl_file_name + suffix)))
self.flt.convert()
logger.info("HDL conversion finished!")
#------------------------------------------------------------------------------
def simFixPoint(self):
"""
Simulate filter in fix-point description
"""
# Setup the Testbench and run
dlg = QFD(self) # instantiate file dialog object
plt_types = "png (*.png);;svg (*.svg)"
plt_file, plt_type = dlg.getSaveFileName_(caption="Save plots as",
directory=fb.base_dir,
filter=plt_types)
plt_file = os.path.normpath(str(plt_file))
plt_type = str(plt_type)
logger.info('Using plot filename "%s"', plt_file)
plt_dir_name = os.path.dirname(plt_file) # extract the directory path
if not os.path.isdir(
plt_dir_name): # create directory if it doesn't exist
os.mkdir(plt_dir_name)
fb.base_dir = plt_dir_name # make this directory the new default / base dir
# return the filename without suffix
plt_file_name = os.path.splitext(os.path.basename(plt_file))[0]
self.setupHDL(file_name=plt_file_name, dir_name=plt_dir_name)
logger.info('Creating plot file "{0}"'.format(
os.path.join(plt_dir_name, plt_file_name)))
logger.info("Fixpoint simulation setup")
tb = self.flt.simulate_freqz(num_loops=3, Nfft=1024)
clk = Signal(False)
ts = Signal(False)
x = Signal(intbv(0, min=-2**(self.W[0] - 1), max=2**(self.W[0] - 1)))
y = Signal(intbv(0, min=-2**(self.W[0] - 1), max=2**(self.W[0] - 1)))
sim = Simulation(tb)
logger.info("Fixpoint simulation started")
sim.run()
logger.info("Fixpoint plotting started")
self.flt.plot_response()
logger.info("Fixpoint plotting finished")
class HDLSpecs(QWidget):
"""
Create the widget for entering exporting / importing / saving / loading data
"""
sigFilterDesigned = pyqtSignal()
def __init__(self, parent):
super(HDLSpecs, self).__init__(parent)
self.initUI()
def initUI(self):
"""
Intitialize the main GUI, consisting of:
"""
# ============== UI Layout =====================================
bfont = QFont()
# font.setPointSize(11)
bfont.setBold(True)
bifont = QFont()
bifont.setBold(True)
bifont.setItalic(True)
ifont = QFont()
ifont.setItalic(True)
lblMsg = QLabel("Warning! This feature is only experimental, "
"only HDL code for second order IIR filters under the name siir_hdl.v "
" resp. siir_hdl.vhd are created at the moment. Files are saved "
" in the pyFDA root directory.", self)
lblMsg.setWordWrap(True)
layHMsg = QHBoxLayout()
layHMsg.addWidget(lblMsg)
self.frmMsg = QFrame(self)
self.frmMsg.setLayout(layHMsg)
self.frmMsg.setContentsMargins(*params['wdg_margins'])
# =============================================================================
# UI for quantization
# =============================================================================
lblHBtnsMsg = QLabel("Fixpoint signal / coeff. formats as WI.WF:", self)
lblHBtnsMsg.setFont(bfont)
self.layHBtnsMsg = QHBoxLayout()
self.layHBtnsMsg.addWidget(lblHBtnsMsg)
ledMaxWid = 30 # Max. Width of QLineEdit fields
qQuant = ['none', 'round', 'fix', 'floor']
qOvfl = ['none', 'wrap', 'sat']
tipOvfl = "Select overflow behaviour."
tipQuant = "Select the kind of quantization."
tipWI = "Specify number of integer bits."
tipWF = "Specify number of fractional bits."
lblQ = "Quant.:"
lblOv = "Ovfl.:"
# -------------------------------------------------------------------
# subUI -- self.layHButtonsHDL_i -- for input format
# -------------------------------------------------------------------
self.lblWInput = QLabel("Input Format:", self)
self.lblWInput.setFont(bifont)
self.ledWIInput = QLineEdit(self)
self.ledWIInput.setToolTip(tipWI)
self.ledWIInput.setText("0")
self.ledWIInput.setMaxLength(2) # maximum of 2 digits
self.ledWIInput.setFixedWidth(ledMaxWid) # width of lineedit in points(?)
self.lblDotInput = QLabel(".", self)
self.ledWFInput = QLineEdit(self)
self.ledWFInput.setToolTip(tipWF)
self.ledWFInput.setText("15")
self.ledWFInput.setMaxLength(2) # maximum of 2 digits
self.ledWFInput.setFixedWidth(ledMaxWid) # width of lineedit in points(?)
self.layHButtonsHDL_i = QHBoxLayout()
self.layHButtonsHDL_i.addWidget(self.lblWInput)
self.layHButtonsHDL_i.addStretch()
self.layHButtonsHDL_i.addWidget(self.ledWIInput)
self.layHButtonsHDL_i.addWidget(self.lblDotInput)
self.layHButtonsHDL_i.addWidget(self.ledWFInput)
# -----------------------------------------------------------------------------
# subUI -- self.layHButtonsHDL_cc -- for coefficient format
# -----------------------------------------------------------------------------
enb_coeff = False
self.lblQCoeff = QLabel("Coeff. Format:", self)
self.lblQCoeff.setFont(bifont)
self.lblQCoeff.setEnabled(enb_coeff)
self.ledWICoeff = QLineEdit(self)
self.ledWICoeff.setToolTip(tipWI)
self.ledWICoeff.setText("0")
self.ledWICoeff.setMaxLength(2) # maximum of 2 digits
self.ledWICoeff.setFixedWidth(ledMaxWid) # width of lineedit in points(?)
self.ledWICoeff.setEnabled(enb_coeff)
self.lblDotCoeff = QLabel(".", self)
self.ledWFCoeff = QLineEdit(self)
self.ledWFCoeff.setToolTip(tipWF)
self.ledWFCoeff.setText("15")
self.ledWFCoeff.setMaxLength(2) # maximum of 2 digits
# self.ledWFCoeff.setFixedWidth(30) # width of lineedit in points(?)
self.ledWFCoeff.setMaximumWidth(ledMaxWid)
self.ledWFCoeff.setEnabled(enb_coeff)
self.layHButtonsHDL_c = QHBoxLayout()
self.layHButtonsHDL_c.addWidget(self.lblQCoeff)
self.layHButtonsHDL_c.addStretch()
self.layHButtonsHDL_c.addWidget(self.ledWICoeff)
self.layHButtonsHDL_c.addWidget(self.lblDotCoeff)
self.layHButtonsHDL_c.addWidget(self.ledWFCoeff)
self.lblQuant_c = QLabel(lblQ, self)
self.lblQuant_c.setEnabled(enb_coeff)
self.cmbQuant_c = QComboBox(self)
self.cmbQuant_c.addItems(qQuant)
self.cmbQuant_c.setToolTip(tipQuant)
self.cmbQuant_c.setEnabled(enb_coeff)
self.lblQOvfl_c = QLabel(lblOv, self)
self.lblQOvfl_c.setEnabled(enb_coeff)
self.cmbOvfl_c = QComboBox(self)
self.cmbOvfl_c.addItems(qOvfl)
self.cmbOvfl_c.setToolTip(tipOvfl)
self.cmbOvfl_c.setEnabled(enb_coeff)
# ComboBox size is adjusted automatically to fit the longest element
self.cmbQuant_c.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.cmbOvfl_c.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.layHButtonsHDL_cc = QHBoxLayout()
self.layHButtonsHDL_cc.addWidget(self.lblQOvfl_c)
self.layHButtonsHDL_cc.addWidget(self.cmbOvfl_c)
self.layHButtonsHDL_cc.addStretch()
self.layHButtonsHDL_cc.addWidget(self.lblQuant_c)
self.layHButtonsHDL_cc.addWidget(self.cmbQuant_c)
self.layHButtonsHDL_cc.setEnabled(False)
# -----------------------------------------------------------------------------
# subUI -- self.layHButtonsHDL_ac -- for accumulator format / overflow behaviour
# -----------------------------------------------------------------------------
# ---------- Accumulator format --------------
self.lblQAccu = QLabel("Accumulator Format:", self)
self.lblQAccu.setFont(bifont)
self.ledWIAccu = QLineEdit(self)
self.ledWIAccu.setToolTip(tipWI)
self.ledWIAccu.setText("0")
self.ledWIAccu.setMaxLength(2) # maximum of 2 digits
self.ledWIAccu.setFixedWidth(ledMaxWid) # width of lineedit in points(?)
self.lblDotAccu = QLabel(".", self)
self.ledWFAccu = QLineEdit(self)
self.ledWFAccu.setToolTip(tipWF)
self.ledWFAccu.setText("15")
self.ledWFAccu.setMaxLength(2) # maximum of 2 digits
self.ledWFAccu.setFixedWidth(ledMaxWid) # width of lineedit in points(?)
self.layHButtonsHDL_a = QHBoxLayout()
self.layHButtonsHDL_a.addWidget(self.lblQAccu)
self.layHButtonsHDL_a.addStretch()
self.layHButtonsHDL_a.addWidget(self.ledWIAccu)
self.layHButtonsHDL_a.addWidget(self.lblDotAccu)
self.layHButtonsHDL_a.addWidget(self.ledWFAccu)
# ---------- Accumulator overflow --------------
self.lblOvfl_a = QLabel(lblOv, self)
self.cmbOvfl_a = QComboBox(self)
self.cmbOvfl_a.addItems(qOvfl)
self.cmbOvfl_a.setToolTip(tipOvfl)
self.lblQuant_a = QLabel(lblQ, self)
self.cmbQuant_a = QComboBox(self)
self.cmbQuant_a.addItems(qQuant)
self.cmbQuant_a.setToolTip(tipQuant)
# ComboBox size is adjusted automatically to fit the longest element
self.cmbQuant_a.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.cmbOvfl_a.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.layHButtonsHDL_ac = QHBoxLayout()
self.layHButtonsHDL_ac.addWidget(self.lblOvfl_a)
self.layHButtonsHDL_ac.addWidget(self.cmbOvfl_a)
self.layHButtonsHDL_ac.addStretch()
self.layHButtonsHDL_ac.addWidget(self.lblQuant_a)
self.layHButtonsHDL_ac.addWidget(self.cmbQuant_a)
# -----------------------------------------------------------------------------
# subUI -- self.layHButtonsHDL_o -- for output format and overflow behaviour
# -----------------------------------------------------------------------------
enb_o_ui = False
self.lblQOutput = QLabel("Output Format:", self)
self.lblQOutput.setFont(bifont)
# self.lblQOutput.setEnabled(enb_o_ui)
self.ledWIOutput = QLineEdit(self)
self.ledWIOutput.setToolTip(tipWI)
self.ledWIOutput.setText("0")
self.ledWIOutput.setMaxLength(2) # maximum of 2 digits
self.ledWIOutput.setFixedWidth(ledMaxWid) # width of lineedit in points(?)
# self.ledWIOutput.setEnabled(enb_o_ui)
self.lblDot_o = QLabel(".", self)
# self.lblDot_o.setEnabled(enb_o_ui)
self.ledWFOutput = QLineEdit(self)
self.ledWFOutput.setToolTip(tipWF)
self.ledWFOutput.setText("15")
self.ledWFOutput.setMaxLength(2) # maximum of 2 digits
self.ledWFOutput.setFixedWidth(ledMaxWid) # width of lineedit in points(?)
# self.ledWFOutput.setEnabled(enb_o_ui)
self.layHButtonsHDL_o = QHBoxLayout()
self.layHButtonsHDL_o.addWidget(self.lblQOutput)
self.layHButtonsHDL_o.addStretch()
self.layHButtonsHDL_o.addWidget(self.ledWIOutput)
self.layHButtonsHDL_o.addWidget(self.lblDot_o)
self.layHButtonsHDL_o.addWidget(self.ledWFOutput)
# This doesn't work - need to set a parent widget like WFrame
self.layHButtonsHDL_o.setEnabled(False)
# ---------- Accumulator overflow --------------
self.lblQOvfl_o = QLabel(lblOv, self)
self.lblQOvfl_o.setEnabled(enb_o_ui)
self.lblQuant_o = QLabel(lblQ, self)
self.lblQuant_o.setEnabled(enb_o_ui)
self.cmbQuant_o = QComboBox(self)
self.cmbQuant_o.addItems(qQuant)
self.cmbQuant_o.setToolTip(tipQuant)
self.cmbQuant_o.setEnabled(enb_o_ui)
self.cmbOvfl_o = QComboBox(self)
self.cmbOvfl_o.addItems(qOvfl)
self.cmbOvfl_o.setToolTip(tipOvfl)
self.cmbOvfl_o.setEnabled(enb_o_ui)
# ComboBox size is adjusted automatically to fit the longest element
self.cmbQuant_o.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.cmbOvfl_o.setSizeAdjustPolicy(QComboBox.AdjustToContents)
self.layHButtonsHDL_oc = QHBoxLayout()
self.layHButtonsHDL_oc.addWidget(self.lblQOvfl_o)
self.layHButtonsHDL_oc.addWidget(self.cmbOvfl_o)
self.layHButtonsHDL_oc.addStretch()
self.layHButtonsHDL_oc.addWidget(self.lblQuant_o)
self.layHButtonsHDL_oc.addWidget(self.cmbQuant_o)
self.butExportHDL = QPushButton(self)
self.butExportHDL.setToolTip("Create VHDL and Verilog files.")
self.butExportHDL.setText("Create HDL")
self.butSimFixPoint = QPushButton(self)
self.butSimFixPoint.setToolTip("Simulate filter with fixpoint effects.")
self.butSimFixPoint.setText("Simulate")
self.layHButtonsHDL_h = QHBoxLayout()
self.layHButtonsHDL_h.addWidget(self.butSimFixPoint)
self.layHButtonsHDL_h.addWidget(self.butExportHDL)
# -------------------------------------------------------------------
layVBtns = QVBoxLayout()
layVBtns.addLayout(self.layHBtnsMsg)
layVBtns.addLayout(self.layHButtonsHDL_i)
layVBtns.addLayout(self.layHButtonsHDL_c)
layVBtns.addLayout(self.layHButtonsHDL_cc)
layVBtns.addLayout(self.layHButtonsHDL_a)
layVBtns.addLayout(self.layHButtonsHDL_ac)
layVBtns.addLayout(self.layHButtonsHDL_o)
layVBtns.addLayout(self.layHButtonsHDL_oc)
layVBtns.addLayout(self.layHButtonsHDL_h)
# -------------------------------------------------------------------
# This frame encompasses all the buttons
frmBtns = QFrame(self)
frmBtns.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken)
frmBtns.setLayout(layVBtns)
# -------------------------------------------------------------------
# Top level layout
# -------------------------------------------------------------------
layVMain = QVBoxLayout()
layVMain.addWidget(self.frmMsg)
# layVMain.addWidget(self.frmFixpoint)
layVMain.addWidget(frmBtns)
layVMain.setContentsMargins(*params['wdg_margins'])
layVMain.addStretch()
self.setLayout(layVMain)
#----------------------------------------------------------------------
# SIGNALS & SLOTs
#----------------------------------------------------------------------
self.butExportHDL.clicked.connect(self.exportHDL)
self.butSimFixPoint.clicked.connect(self.simFixPoint)
#----------------------------------------------------------------------
self.update_UI()
#------------------------------------------------------------------------------
def update_UI(self):
"""
Update the UI after changing the filter class
"""
if hasattr(ff.fil_inst, 'hdl'):
self.butExportHDL.setEnabled('iir_sos' in ff.fil_inst.hdl)
self.butSimFixPoint.setEnabled('iir_sos' in ff.fil_inst.hdl)
else:
self.butExportHDL.setEnabled(False)
self.butSimFixPoint.setEnabled(False)
#------------------------------------------------------------------------------
def setupHDL(self, file_name = "", dir_name = ""):
"""
Setup instance of myHDL object with word lengths and coefficients
"""
qI_i = int(self.ledWIInput.text())
qF_i = int(self.ledWFInput.text())
qI_o = int(self.ledWIOutput.text())
qF_o = int(self.ledWFOutput.text())
qQuant_o = self.cmbQuant_o.currentText()
qOvfl_o = self.cmbOvfl_o.currentText()
q_obj_o = {'WI':qI_o, 'WF': qF_o, 'quant': qQuant_o, 'ovfl': qOvfl_o}
myQ_o = fix.Fixed(q_obj_o) # instantiate fixed-point object
self.W = (qI_i + qF_i + 1, qF_i) # Matlab format: (W,WF)
# @todo: always use sos? The filter object is setup to always
# @todo: generate a second order filter
# get filter coefficients etc. from filter dict
coeffs = fb.fil[0]['ba']
zpk = fb.fil[0]['zpk']
sos = fb.fil[0]['sos']
print("W = ", self.W)
print('b =', coeffs[0][0:3])
print('a =', coeffs[1][0:3])
# =============== adapted from C. Felton's SIIR example =============
self.flt = FilterIIR(b=np.array(coeffs[0][0:3]),
a=np.array(coeffs[1][0:3]),
#sos = sos, doesn't work yet
word_format=(self.W[0], 0, self.W[1]))
self.flt.hdl_name = file_name
self.flt.hdl_directory = dir_name
#------------------------------------------------------------------------------
def exportHDL(self):
"""
Synthesize HDL description of filter using myHDL module
"""
dlg = QFD(self) # instantiate file dialog object
file_types = "Verilog (*.v);;VHDL (*.vhd)"
hdl_file, hdl_filter = dlg.getSaveFileName_(
caption="Save HDL as", directory=fb.base_dir,
filter=file_types)
hdl_file = os.path.normpath(str(hdl_file))
hdl_type = extract_file_ext(hdl_filter)[0] # return '.v' or '.vhd'
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)
fb.base_dir = hdl_dir_name # make this directory the new default / base dir
# return the filename without suffix
hdl_file_name = os.path.splitext(os.path.basename(hdl_file))[0]
self.setupHDL(file_name = hdl_file_name, dir_name = hdl_dir_name)
if str(hdl_type) == '.vhd':
self.flt.hdl_target = 'vhdl'
suffix = '.vhd'
else:
self.flt.hdl_target = 'verilog'
suffix = '.v'
logger.info('Creating hdl_file "{0}"'.format(
os.path.join(hdl_dir_name, hdl_file_name + suffix)))
self.flt.convert()
logger.info("HDL conversion finished!")
#------------------------------------------------------------------------------
def simFixPoint(self):
"""
Simulate filter in fix-point description
"""
# Setup the Testbench and run
dlg = QFD(self) # instantiate file dialog object
plt_types = "png (*.png);;svg (*.svg)"
plt_file, plt_type = dlg.getSaveFileName_(
caption = "Save plots as", directory=fb.base_dir,
filter = plt_types)
plt_file = os.path.normpath(str(plt_file))
plt_type = str(plt_type)
logger.info('Using plot filename "%s"', plt_file)
plt_dir_name = os.path.dirname(plt_file) # extract the directory path
if not os.path.isdir(plt_dir_name): # create directory if it doesn't exist
os.mkdir(plt_dir_name)
fb.base_dir = plt_dir_name # make this directory the new default / base dir
# return the filename without suffix
plt_file_name = os.path.splitext(os.path.basename(plt_file))[0]
self.setupHDL(file_name = plt_file_name, dir_name = plt_dir_name)
logger.info('Creating plot file "{0}"'.format(
os.path.join(plt_dir_name, plt_file_name)))
logger.info("Fixpoint simulation setup")
tb = self.flt.simulate_freqz(num_loops=3, Nfft=1024)
clk = Signal(False)
ts = Signal(False)
x = Signal(intbv(0,min=-2**(self.W[0]-1), max=2**(self.W[0]-1)))
y = Signal(intbv(0,min=-2**(self.W[0]-1), max=2**(self.W[0]-1)))
sim = Simulation(tb)
logger.info("Fixpoint simulation started")
sim.run()
logger.info("Fixpoint plotting started")
self.flt.plot_response()
logger.info("Fixpoint plotting finished")