osmocom_siggen: add controls for DC offset and IQ imbalance correction
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5d0bade320
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@ -314,6 +314,130 @@ class app_gui(pubsub):
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except RuntimeError:
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pass
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##################################################
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# DC Offset controls
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##################################################
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dc_offset_vbox = forms.static_box_sizer(parent=self.panel,
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label="DC Offset Correction",
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orient=wx.VERTICAL,
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bold=True)
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dc_offset_vbox.AddSpacer(3)
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# First row of sample rate controls
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dc_offset_hbox = wx.BoxSizer(wx.HORIZONTAL)
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dc_offset_vbox.Add(dc_offset_hbox, 0, wx.EXPAND)
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dc_offset_vbox.AddSpacer(3)
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# Add frequency controls to top window sizer
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self.vbox.Add(dc_offset_vbox, 0, wx.EXPAND)
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self.vbox.AddSpacer(3)
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dc_offset_hbox.AddSpacer(3)
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forms.text_box(
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parent=self.panel, sizer=dc_offset_hbox,
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label='Real',
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proportion=1,
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converter=forms.float_converter(),
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ps=self.tb,
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key=osmocom_siggen.DC_OFFSET_REAL
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)
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dc_offset_hbox.AddSpacer(3)
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forms.slider(
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parent=self.panel, sizer=dc_offset_hbox,
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proportion=3,
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minimum=-1,
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maximum=+1,
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step_size=0.001,
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ps=self.tb,
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key=osmocom_siggen.DC_OFFSET_REAL
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)
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dc_offset_hbox.AddSpacer(3)
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dc_offset_hbox.AddSpacer(3)
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forms.text_box(
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parent=self.panel, sizer=dc_offset_hbox,
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label='Imag',
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proportion=1,
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converter=forms.float_converter(),
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ps=self.tb,
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key=osmocom_siggen.DC_OFFSET_IMAG
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)
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dc_offset_hbox.AddSpacer(3)
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forms.slider(
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parent=self.panel, sizer=dc_offset_hbox,
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proportion=3,
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minimum=-1,
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maximum=+1,
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step_size=0.001,
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ps=self.tb,
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key=osmocom_siggen.DC_OFFSET_IMAG
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)
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dc_offset_hbox.AddSpacer(3)
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##################################################
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# IQ Imbalance controls
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##################################################
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iq_balance_vbox = forms.static_box_sizer(parent=self.panel,
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label="IQ Imbalance Correction",
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orient=wx.VERTICAL,
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bold=True)
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iq_balance_vbox.AddSpacer(3)
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# First row of sample rate controls
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iq_balance_hbox = wx.BoxSizer(wx.HORIZONTAL)
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iq_balance_vbox.Add(iq_balance_hbox, 0, wx.EXPAND)
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iq_balance_vbox.AddSpacer(3)
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# Add frequency controls to top window sizer
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self.vbox.Add(iq_balance_vbox, 0, wx.EXPAND)
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self.vbox.AddSpacer(3)
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iq_balance_hbox.AddSpacer(3)
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forms.text_box(
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parent=self.panel, sizer=iq_balance_hbox,
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label='Mag',
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proportion=1,
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converter=forms.float_converter(),
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ps=self.tb,
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key=osmocom_siggen.IQ_BALANCE_MAG
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)
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iq_balance_hbox.AddSpacer(3)
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forms.slider(
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parent=self.panel, sizer=iq_balance_hbox,
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proportion=3,
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minimum=-1,
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maximum=+1,
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step_size=0.001,
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ps=self.tb,
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key=osmocom_siggen.IQ_BALANCE_MAG
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)
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iq_balance_hbox.AddSpacer(3)
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iq_balance_hbox.AddSpacer(3)
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forms.text_box(
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parent=self.panel, sizer=iq_balance_hbox,
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label='Phase',
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proportion=1,
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converter=forms.float_converter(),
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ps=self.tb,
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key=osmocom_siggen.IQ_BALANCE_PHA
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)
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iq_balance_hbox.AddSpacer(3)
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forms.slider(
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parent=self.panel, sizer=iq_balance_hbox,
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proportion=3,
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minimum=-1,
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maximum=+1,
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step_size=0.001,
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ps=self.tb,
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key=osmocom_siggen.IQ_BALANCE_PHA
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)
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iq_balance_hbox.AddSpacer(3)
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##################################################
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# Sample Rate controls
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##################################################
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@ -33,6 +33,10 @@ WAVEFORM2_FREQ_KEY = 'waveform2_freq'
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FREQ_RANGE_KEY = 'freq_range'
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GAIN_RANGE_KEY = lambda x: 'gain_range:'+x
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BWIDTH_RANGE_KEY = 'bwidth_range'
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DC_OFFSET_REAL = 'dc_offset_real'
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DC_OFFSET_IMAG = 'dc_offset_imag'
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IQ_BALANCE_MAG = 'iq_balance_mag'
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IQ_BALANCE_PHA = 'iq_balance_pha'
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TYPE_KEY = 'type'
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def setter(ps, key, val): ps[key] = val
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@ -143,6 +147,12 @@ class top_block(gr.top_block, pubsub):
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self[WAVEFORM_OFFSET_KEY] = options.offset
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self[WAVEFORM2_FREQ_KEY] = options.waveform2_freq
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# initialize reasonable defaults for DC / IQ correction
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self[DC_OFFSET_REAL] = 0
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self[DC_OFFSET_IMAG] = 0
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self[IQ_BALANCE_MAG] = 0
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self[IQ_BALANCE_PHA] = 0
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#subscribe set methods
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self.subscribe(SAMP_RATE_KEY, self.set_samp_rate)
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@ -157,6 +167,11 @@ class top_block(gr.top_block, pubsub):
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self.subscribe(WAVEFORM2_FREQ_KEY, self.set_waveform2_freq)
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self.subscribe(TYPE_KEY, self.set_waveform)
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self.subscribe(DC_OFFSET_REAL, self.set_dc_offset)
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self.subscribe(DC_OFFSET_IMAG, self.set_dc_offset)
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self.subscribe(IQ_BALANCE_MAG, self.set_iq_balance)
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self.subscribe(IQ_BALANCE_PHA, self.set_iq_balance)
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#force update on pubsub keys
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for key in (SAMP_RATE_KEY, GAIN_KEY, BWIDTH_KEY,
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TX_FREQ_KEY, FREQ_CORR_KEY, AMPLITUDE_KEY,
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@ -248,6 +263,28 @@ class top_block(gr.top_block, pubsub):
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if self._verbose:
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print "Set bandwidth to:", bw
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def set_dc_offset(self, value):
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correction = complex( self[DC_OFFSET_REAL], self[DC_OFFSET_IMAG] )
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try:
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self._sink.set_dc_offset( correction )
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if self._verbose:
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print "Set DC offset to", correction
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except RuntimeError as ex:
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print ex
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def set_iq_balance(self, value):
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correction = complex( self[IQ_BALANCE_MAG], self[IQ_BALANCE_PHA] )
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try:
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self._sink.set_iq_balance( correction )
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if self._verbose:
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print "Set IQ balance to", correction
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except RuntimeError as ex:
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print ex
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def set_freq(self, freq):
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if freq is None:
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f = self[FREQ_RANGE_KEY]
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