#!/usr/bin/env python ################################################## # Gnuradio Python Flow Graph # Title: USRP FLEX Pager Receiver (Single Channel) # Generated: Thu Oct 29 11:03:16 2009 ################################################## from gnuradio import blks2 from gnuradio import eng_notation from gnuradio import gr from gnuradio import pager from gnuradio import window from gnuradio.eng_option import eng_option from gnuradio.gr import firdes from gnuradio.wxgui import fftsink2 from gnuradio.wxgui import forms from gnuradio.wxgui import scopesink2 from grc_gnuradio import usrp as grc_usrp from grc_gnuradio import wxgui as grc_wxgui from optparse import OptionParser import ConfigParser import os, math import wx class usrp_rx_flex(grc_wxgui.top_block_gui): def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="USRP FLEX Pager Receiver (Single Channel)") ################################################## # Variables ################################################## self.config_filename = config_filename = os.environ["HOME"]+"/.gnuradio/config.conf" self.symbol_rate = symbol_rate = 3200 self._saved_channel_config = ConfigParser.ConfigParser() self._saved_channel_config.read(config_filename) try: saved_channel = self._saved_channel_config.getint("gr-pager", "channel") except: saved_channel = 25 self.saved_channel = saved_channel self._saved_band_freq_config = ConfigParser.ConfigParser() self._saved_band_freq_config.read(config_filename) try: saved_band_freq = self._saved_band_freq_config.getfloat("gr-pager", "band_center") except: saved_band_freq = 930.5125e6 self.saved_band_freq = saved_band_freq self.deviation = deviation = 4800 self.decim = decim = 20 self.adc_rate = adc_rate = 64e6 self.sample_rate = sample_rate = adc_rate/decim self.passband = passband = 2*(deviation+symbol_rate) self.channel_rate = channel_rate = 8*3200 self.channel = channel = saved_channel self.band_freq = band_freq = saved_band_freq self._saved_rx_gain_config = ConfigParser.ConfigParser() self._saved_rx_gain_config.read(config_filename) try: saved_rx_gain = self._saved_rx_gain_config.getint("gr-pager", "rx_gain") except: saved_rx_gain = 40 self.saved_rx_gain = saved_rx_gain self._saved_offset_config = ConfigParser.ConfigParser() self._saved_offset_config.read(config_filename) try: saved_offset = self._saved_offset_config.getfloat("gr-pager", "freq_offset") except: saved_offset = 0 self.saved_offset = saved_offset self.freq = freq = band_freq+(channel-61)*25e3 self.channel_taps = channel_taps = firdes.low_pass(10, sample_rate, passband/2.0, (channel_rate-passband)/2.0) self.rx_gain = rx_gain = saved_rx_gain self.offset = offset = saved_offset self.nchan_taps = nchan_taps = len(channel_taps) self.ma_ntaps = ma_ntaps = int(channel_rate/symbol_rate) self.freq_text = freq_text = freq self.demod_k = demod_k = 3*channel_rate/(2*math.pi*deviation) self.channel_decim = channel_decim = int(sample_rate/channel_rate) self.bb_interp = bb_interp = 5 self.bb_decim = bb_decim = 8 self.baseband_rate = baseband_rate = 16000 ################################################## # Notebooks ################################################## self.displays = wx.Notebook(self.GetWin(), style=wx.NB_TOP) self.displays.AddPage(grc_wxgui.Panel(self.displays), "RX Spectrum") self.displays.AddPage(grc_wxgui.Panel(self.displays), "Baseband") self.GridAdd(self.displays, 1, 0, 1, 5) ################################################## # Controls ################################################## _channel_sizer = wx.BoxSizer(wx.VERTICAL) self._channel_text_box = forms.text_box( parent=self.GetWin(), sizer=_channel_sizer, value=self.channel, callback=self.set_channel, label="Channel", converter=forms.int_converter(), proportion=0, ) self._channel_slider = forms.slider( parent=self.GetWin(), sizer=_channel_sizer, value=self.channel, callback=self.set_channel, minimum=1, maximum=120, num_steps=119, style=wx.SL_HORIZONTAL, cast=int, proportion=1, ) self.GridAdd(_channel_sizer, 0, 1, 1, 1) self._band_freq_text_box = forms.text_box( parent=self.GetWin(), value=self.band_freq, callback=self.set_band_freq, label="Band Freq.", converter=forms.float_converter(), ) self.GridAdd(self._band_freq_text_box, 0, 0, 1, 1) _rx_gain_sizer = wx.BoxSizer(wx.VERTICAL) self._rx_gain_text_box = forms.text_box( parent=self.GetWin(), sizer=_rx_gain_sizer, value=self.rx_gain, callback=self.set_rx_gain, label="Analog Gain", converter=forms.int_converter(), proportion=0, ) self._rx_gain_slider = forms.slider( parent=self.GetWin(), sizer=_rx_gain_sizer, value=self.rx_gain, callback=self.set_rx_gain, minimum=0, maximum=100, num_steps=100, style=wx.SL_HORIZONTAL, cast=int, proportion=1, ) self.GridAdd(_rx_gain_sizer, 0, 4, 1, 1) _offset_sizer = wx.BoxSizer(wx.VERTICAL) self._offset_text_box = forms.text_box( parent=self.GetWin(), sizer=_offset_sizer, value=self.offset, callback=self.set_offset, label="Freq. Offset", converter=forms.float_converter(), proportion=0, ) self._offset_slider = forms.slider( parent=self.GetWin(), sizer=_offset_sizer, value=self.offset, callback=self.set_offset, minimum=-12.5e3, maximum=12.5e3, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_offset_sizer, 0, 3, 1, 1) self._freq_text_static_text = forms.static_text( parent=self.GetWin(), value=self.freq_text, callback=self.set_freq_text, label="Ch. Freq", converter=forms.float_converter(), ) self.GridAdd(self._freq_text_static_text, 0, 2, 1, 1) ################################################## # Blocks ################################################## self.fm_demod = gr.quadrature_demod_cf(demod_k) self.gr_freq_xlating_fir_filter_xxx_0 = gr.freq_xlating_fir_filter_ccc(channel_decim, (channel_taps), band_freq-freq+offset, sample_rate) self.gr_null_sink_0 = gr.null_sink(gr.sizeof_int*1) self.gr_null_sink_0_0 = gr.null_sink(gr.sizeof_int*1) self.gr_null_sink_0_1 = gr.null_sink(gr.sizeof_int*1) self.gr_null_sink_0_2 = gr.null_sink(gr.sizeof_int*1) self.pager_flex_deinterleave_0 = pager.flex_deinterleave() self.pager_flex_deinterleave_0_0 = pager.flex_deinterleave() self.pager_flex_deinterleave_0_1 = pager.flex_deinterleave() self.pager_flex_deinterleave_0_1_0 = pager.flex_deinterleave() self.pager_flex_sync_0 = pager.flex_sync() self.pager_slicer_fb_0 = pager.slicer_fb(1e-6) self.resampler = blks2.rational_resampler_fff( interpolation=bb_interp, decimation=bb_decim, taps=([1.0/ma_ntaps,]*ma_ntaps*bb_interp), fractional_bw=None, ) self.usrp_source = grc_usrp.simple_source_c(which=0, side="A", rx_ant="RXA") self.usrp_source.set_decim_rate(decim) self.usrp_source.set_frequency(band_freq, verbose=True) self.usrp_source.set_gain(rx_gain) self.wxgui_fftsink2_0 = fftsink2.fft_sink_c( self.displays.GetPage(0).GetWin(), baseband_freq=band_freq, y_per_div=10, y_divs=10, ref_level=0, ref_scale=65536, sample_rate=sample_rate, fft_size=1024, fft_rate=30, average=False, avg_alpha=None, title="FLEX Spectrum", peak_hold=False, ) self.displays.GetPage(0).GridAdd(self.wxgui_fftsink2_0.win, 0, 0, 1, 1) self.wxgui_fftsink2_1 = fftsink2.fft_sink_c( self.displays.GetPage(0).GetWin(), baseband_freq=freq, y_per_div=10, y_divs=10, ref_level=0, ref_scale=65536, sample_rate=channel_rate, fft_size=1024, fft_rate=30, average=False, avg_alpha=None, title="Channel Spectrum", peak_hold=False, ) self.displays.GetPage(0).GridAdd(self.wxgui_fftsink2_1.win, 1, 0, 1, 1) self.wxgui_scopesink2_0_0 = scopesink2.scope_sink_f( self.displays.GetPage(1).GetWin(), title="Baseband", sample_rate=16e3, v_scale=1, v_offset=0, t_scale=40.0/16e3, ac_couple=False, xy_mode=False, num_inputs=1, ) self.displays.GetPage(1).GridAdd(self.wxgui_scopesink2_0_0.win, 0, 0, 1, 1) ################################################## # Connections ################################################## self.connect((self.gr_freq_xlating_fir_filter_xxx_0, 0), (self.wxgui_fftsink2_1, 0)) self.connect((self.usrp_source, 0), (self.gr_freq_xlating_fir_filter_xxx_0, 0)) self.connect((self.usrp_source, 0), (self.wxgui_fftsink2_0, 0)) self.connect((self.gr_freq_xlating_fir_filter_xxx_0, 0), (self.fm_demod, 0)) self.connect((self.resampler, 0), (self.wxgui_scopesink2_0_0, 0)) self.connect((self.fm_demod, 0), (self.resampler, 0)) self.connect((self.pager_slicer_fb_0, 0), (self.pager_flex_sync_0, 0)) self.connect((self.resampler, 0), (self.pager_slicer_fb_0, 0)) self.connect((self.pager_flex_sync_0, 1), (self.pager_flex_deinterleave_0_1_0, 0)) self.connect((self.pager_flex_sync_0, 2), (self.pager_flex_deinterleave_0_1, 0)) self.connect((self.pager_flex_sync_0, 0), (self.pager_flex_deinterleave_0, 0)) self.connect((self.pager_flex_sync_0, 3), (self.pager_flex_deinterleave_0_0, 0)) self.connect((self.pager_flex_deinterleave_0, 0), (self.gr_null_sink_0, 0)) self.connect((self.pager_flex_deinterleave_0_1_0, 0), (self.gr_null_sink_0_0, 0)) self.connect((self.pager_flex_deinterleave_0_1, 0), (self.gr_null_sink_0_1, 0)) self.connect((self.pager_flex_deinterleave_0_0, 0), (self.gr_null_sink_0_2, 0)) def set_config_filename(self, config_filename): self.config_filename = config_filename self._saved_band_freq_config = ConfigParser.ConfigParser() self._saved_band_freq_config.read(self.config_filename) if not self._saved_band_freq_config.has_section("gr-pager"): self._saved_band_freq_config.add_section("gr-pager") self._saved_band_freq_config.set("gr-pager", "band_center", str(self.band_freq)) self._saved_band_freq_config.write(open(self.config_filename, 'w')) self._saved_channel_config = ConfigParser.ConfigParser() self._saved_channel_config.read(self.config_filename) if not self._saved_channel_config.has_section("gr-pager"): self._saved_channel_config.add_section("gr-pager") self._saved_channel_config.set("gr-pager", "channel", str(self.channel)) self._saved_channel_config.write(open(self.config_filename, 'w')) self._saved_offset_config = ConfigParser.ConfigParser() self._saved_offset_config.read(self.config_filename) if not self._saved_offset_config.has_section("gr-pager"): self._saved_offset_config.add_section("gr-pager") self._saved_offset_config.set("gr-pager", "freq_offset", str(self.offset)) self._saved_offset_config.write(open(self.config_filename, 'w')) self._saved_rx_gain_config = ConfigParser.ConfigParser() self._saved_rx_gain_config.read(self.config_filename) if not self._saved_rx_gain_config.has_section("gr-pager"): self._saved_rx_gain_config.add_section("gr-pager") self._saved_rx_gain_config.set("gr-pager", "rx_gain", str(self.rx_gain)) self._saved_rx_gain_config.write(open(self.config_filename, 'w')) def set_symbol_rate(self, symbol_rate): self.symbol_rate = symbol_rate self.set_passband(2*(self.deviation+self.symbol_rate)) self.set_ma_ntaps(int(self.channel_rate/self.symbol_rate)) def set_saved_channel(self, saved_channel): self.saved_channel = saved_channel self.set_channel(self.saved_channel) def set_saved_band_freq(self, saved_band_freq): self.saved_band_freq = saved_band_freq self.set_band_freq(self.saved_band_freq) def set_deviation(self, deviation): self.deviation = deviation self.set_demod_k(3*self.channel_rate/(2*math.pi*self.deviation)) self.set_passband(2*(self.deviation+self.symbol_rate)) def set_decim(self, decim): self.decim = decim self.set_sample_rate(self.adc_rate/self.decim) self.usrp_source.set_decim_rate(self.decim) def set_adc_rate(self, adc_rate): self.adc_rate = adc_rate self.set_sample_rate(self.adc_rate/self.decim) def set_sample_rate(self, sample_rate): self.sample_rate = sample_rate self.wxgui_fftsink2_0.set_sample_rate(self.sample_rate) self.set_channel_decim(int(self.sample_rate/self.channel_rate)) self.set_channel_taps(firdes.low_pass(10, self.sample_rate, self.passband/2.0, (self.channel_rate-self.passband)/2.0)) def set_passband(self, passband): self.passband = passband self.set_channel_taps(firdes.low_pass(10, self.sample_rate, self.passband/2.0, (self.channel_rate-self.passband)/2.0)) def set_channel_rate(self, channel_rate): self.channel_rate = channel_rate self.wxgui_fftsink2_1.set_sample_rate(self.channel_rate) self.set_channel_decim(int(self.sample_rate/self.channel_rate)) self.set_demod_k(3*self.channel_rate/(2*math.pi*self.deviation)) self.set_channel_taps(firdes.low_pass(10, self.sample_rate, self.passband/2.0, (self.channel_rate-self.passband)/2.0)) self.set_ma_ntaps(int(self.channel_rate/self.symbol_rate)) def set_channel(self, channel): self.channel = channel self.set_freq(self.band_freq+(self.channel-61)*25e3) self._saved_channel_config = ConfigParser.ConfigParser() self._saved_channel_config.read(self.config_filename) if not self._saved_channel_config.has_section("gr-pager"): self._saved_channel_config.add_section("gr-pager") self._saved_channel_config.set("gr-pager", "channel", str(self.channel)) self._saved_channel_config.write(open(self.config_filename, 'w')) self._channel_slider.set_value(self.channel) self._channel_text_box.set_value(self.channel) def set_band_freq(self, band_freq): self.band_freq = band_freq self.set_freq(self.band_freq+(self.channel-61)*25e3) self.wxgui_fftsink2_0.set_baseband_freq(self.band_freq) self.usrp_source.set_frequency(self.band_freq) self.gr_freq_xlating_fir_filter_xxx_0.set_center_freq(self.band_freq-self.freq+self.offset) self._saved_band_freq_config = ConfigParser.ConfigParser() self._saved_band_freq_config.read(self.config_filename) if not self._saved_band_freq_config.has_section("gr-pager"): self._saved_band_freq_config.add_section("gr-pager") self._saved_band_freq_config.set("gr-pager", "band_center", str(self.band_freq)) self._saved_band_freq_config.write(open(self.config_filename, 'w')) self._band_freq_text_box.set_value(self.band_freq) def set_saved_rx_gain(self, saved_rx_gain): self.saved_rx_gain = saved_rx_gain self.set_rx_gain(self.saved_rx_gain) def set_saved_offset(self, saved_offset): self.saved_offset = saved_offset self.set_offset(self.saved_offset) def set_freq(self, freq): self.freq = freq self.gr_freq_xlating_fir_filter_xxx_0.set_center_freq(self.band_freq-self.freq+self.offset) self.wxgui_fftsink2_1.set_baseband_freq(self.freq) self.set_freq_text(self.freq) def set_channel_taps(self, channel_taps): self.channel_taps = channel_taps self.gr_freq_xlating_fir_filter_xxx_0.set_taps((self.channel_taps)) self.set_nchan_taps(len(self.channel_taps)) def set_rx_gain(self, rx_gain): self.rx_gain = rx_gain self.usrp_source.set_gain(self.rx_gain) self._saved_rx_gain_config = ConfigParser.ConfigParser() self._saved_rx_gain_config.read(self.config_filename) if not self._saved_rx_gain_config.has_section("gr-pager"): self._saved_rx_gain_config.add_section("gr-pager") self._saved_rx_gain_config.set("gr-pager", "rx_gain", str(self.rx_gain)) self._saved_rx_gain_config.write(open(self.config_filename, 'w')) self._rx_gain_slider.set_value(self.rx_gain) self._rx_gain_text_box.set_value(self.rx_gain) def set_offset(self, offset): self.offset = offset self.gr_freq_xlating_fir_filter_xxx_0.set_center_freq(self.band_freq-self.freq+self.offset) self._saved_offset_config = ConfigParser.ConfigParser() self._saved_offset_config.read(self.config_filename) if not self._saved_offset_config.has_section("gr-pager"): self._saved_offset_config.add_section("gr-pager") self._saved_offset_config.set("gr-pager", "freq_offset", str(self.offset)) self._saved_offset_config.write(open(self.config_filename, 'w')) self._offset_slider.set_value(self.offset) self._offset_text_box.set_value(self.offset) def set_nchan_taps(self, nchan_taps): self.nchan_taps = nchan_taps def set_ma_ntaps(self, ma_ntaps): self.ma_ntaps = ma_ntaps def set_freq_text(self, freq_text): self.freq_text = freq_text self._freq_text_static_text.set_value(self.freq_text) def set_demod_k(self, demod_k): self.demod_k = demod_k def set_channel_decim(self, channel_decim): self.channel_decim = channel_decim def set_bb_interp(self, bb_interp): self.bb_interp = bb_interp def set_bb_decim(self, bb_decim): self.bb_decim = bb_decim def set_baseband_rate(self, baseband_rate): self.baseband_rate = baseband_rate if __name__ == '__main__': parser = OptionParser(option_class=eng_option, usage="%prog: [options]") (options, args) = parser.parse_args() tb = usrp_rx_flex() tb.Run(True)