def TransmitterSetup(self):
#def on_modulation_change(change):
#self.TransmitterTop.set_modulation(change['new'])
def on_slider_change(change):
self.dac_block.MixerSettings['Freq'] = change['new']
self.dac_block.UpdateEvent(xrfdc.EVENT_MIXER)
# def setNyquist(zone):
# zone = int(zone['new'])
# self.adc_block.NyquistZone = zone
#options= ['BPSK', 'QPSK', '8-PSK', '16-QAM']
#modsel = sipw.drop_menu_widget('Modulation:', options[1],options)
freqsel = sipw.float_txt_widget('Tx Frequency (MHz):',
self.dac_block.MixerSettings['Freq'],
1, 1020, 1)
# nyquist = sipw.drop_menu_widget('Nyquist Zone:', 1, [1,2])
accordion = sipw.accordion_widget('Transmit', [freqsel])
#modsel.observe(on_modulation_change, names='value')
freqsel.observe(on_slider_change, names='value')
return accordion
def ReceiverSetup(self):
def changeADC(adc):
adc_new = adc['new']
adc_new_bin = np.binary_repr(adc_new, width=2)
tile = int(adc_new_bin[0])
block = int(adc_new_bin[1])
self.adc_tile = self.rf.adc_tiles[tile]
self.adc_block = self.adc_tile.blocks[block]
im = MMIO(0x00_A004_6000, 4096)
re = MMIO(0x00_A004_7000, 4096)
re.write(0x40, adc_new)
re.write(0x0, 0x2)
im.write(0x40, adc_new)
im.write(0x0, 0x2)
update_widgets_and_graph()
def update_widgets_and_graph():
# self.nyquist.value = self.adc_block.NyquistZone
self.rx_nco_txt.value = np.ceil(
self.adc_block.MixerSettings['Freq'])
update_nco_and_graph(self.adc_block, self.rx_nco_txt.value)
def update_nco_and_graph(rf_block, nco_freq):
lim = self._fs / 2 #+ (nco_freq * 1e6)
div = (self._fs) / 2048
self._fc = nco_freq
self.SpecPlot._x_data = np.arange(-lim, lim,
div) + (nco_freq * 1e6)
self.SpecPlot._x_data_spectrogram = np.take(
self.SpecPlot._x_data, self.SpecPlot.indices_2)
self.SpecPlot._range = [
min(self.SpecPlot._x_data),
max(self.SpecPlot._x_data)
]
self.SpecPlot._updaterange = True
rf_block.MixerSettings['Freq'] = nco_freq
rf_block.UpdateEvent(xrfdc.EVENT_MIXER)
def update_downsampler_and_nco_slider(freq_res):
freq_res = float(freq_res['new'])
"""Firstly, update the virtual sampling frequency"""
self._fs = np.round(freq_res * 2048)
"""Get the downsampling factor for the given frequency resolution"""
L = int(np.floor(self._axi_fs / self._fs))
"""If the downsampling factor is equal to 1, then disable the Low-Pass filters.
Else, the lowpass filter should be generated and the coefficients written to the FIRs."""
if L == 1:
self.BandwidthSelector.BWSelector.enable = 0
else:
w, h, coeffs = self.BandwidthSelector.generate_lowpass(
self._axi_fs,
self._axi_fs / (2 * L) - self._axi_fs * 0.025,
self._axi_fs * 0.025, 256)
"""Only need one half as filter is symmetric"""
self._coeffs = coeffs[0:128:1]
self.BandwidthSelector.reload(self._coeffs)
self.BandwidthSelector.config(0)
self.BandwidthSelector.BWSelector.enable = 1
"""Set the downsample factor after updating the FIR coefficients"""
self.BandwidthSelector.set_downsample(L)
"""Finally update the range of the SpecPlot so that it accurately represents the bandwidth"""
lim = self._fs / 2
div = (self._fs) / 2048
self.SpecPlot._x_data = np.arange(-lim, lim, div) + self._fc * 1e6
self.SpecPlot._x_data_spectrogram = np.take(
self.SpecPlot._x_data, self.SpecPlot.indices_2)
self.SpecPlot._range = [
min(self.SpecPlot._x_data),
max(self.SpecPlot._x_data)
]
self.SpecPlot._updaterange = True
"""Update Scaler in PSD - Hotfix"""
#self.SpectrumAnalyser.SpectrumFFT.PSD.write(0x104, int(struct.unpack('!i',struct.pack('!f',float(1/(self._fs*self.SpectrumWindow.scale_factor))))[0]))
self.SpectrumAnalyser.SpectrumFFT.PSD.write(
0x108,
int(struct.unpack('!i', struct.pack('!f', float(div)))[0]))
def unwrap_slider_val(callback):
return lambda slider_val: callback(slider_val['new'])
# def setNyquist(zone):
# zone = int(zone['new'])
# self.adc_block.NyquistZone = zone
# Receive Controls
options = [0, 1, 2]
rx_adc_drop = sipw.drop_menu_widget('ADC', options[0], options)
self.rx_nco_txt = sipw.float_txt_widget('Center Frequency (MHz):', 64,
1, 1024, 1)
optgen = [16e6, 32e6, 64e6, 128e6, 256e6]
options = [i / 2048 for i in optgen]
rx_res_drop = sipw.drop_menu_widget('Resolution (Hz):', options[3],
options)
# self.nyquist = sipw.drop_menu_widget('Nyquist Zone:', 2, [1,2])
accordion = sipw.accordion_widget(
'Receive', [rx_adc_drop, self.rx_nco_txt, rx_res_drop])
rx_adc_drop.observe(changeADC, names='value')
self.rx_nco_txt.observe(unwrap_slider_val(
lambda v: update_nco_and_graph(self.adc_block, v)),
names='value')
rx_res_drop.observe(update_downsampler_and_nco_slider, names='value')
# self.nyquist.observe(setNyquist, names='value')
return accordion