diff options
Diffstat (limited to 'gr-noaa/apps/usrp_rx_hrpt_nogui.py')
| -rwxr-xr-x | gr-noaa/apps/usrp_rx_hrpt_nogui.py | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/gr-noaa/apps/usrp_rx_hrpt_nogui.py b/gr-noaa/apps/usrp_rx_hrpt_nogui.py new file mode 100755 index 000000000..9917847bb --- /dev/null +++ b/gr-noaa/apps/usrp_rx_hrpt_nogui.py @@ -0,0 +1,250 @@ +#!/usr/bin/env python +################################################## +# Gnuradio Python Flow Graph +# Title: USRP HRPT Receiver +# Generated: Sun Sep 27 10:13:25 2009 +################################################## + +from gnuradio import eng_notation +from gnuradio import gr +from gnuradio import noaa +from gnuradio.eng_option import eng_option +from gnuradio.gr import firdes +from grc_gnuradio import usrp as grc_usrp +from optparse import OptionParser +import ConfigParser +import math + +class usrp_rx_hrpt_nogui(gr.top_block): + + def __init__(self): + gr.top_block.__init__(self, "USRP HRPT Receiver") + + ################################################## + # Variables + ################################################## + self.config_filename = config_filename = 'usrp_rx_hrpt.cfg' + self._decim_config = ConfigParser.ConfigParser() + self._decim_config.read(config_filename) + try: decim = self._decim_config.getfloat('usrp', 'decim') + except: decim = 16 + self.decim = decim + self.sym_rate = sym_rate = 600*1109 + self.sample_rate = sample_rate = 64e6/decim + self.sps = sps = sample_rate/sym_rate + self.hs = hs = int(sps/2.0) + self._sync_alpha_config = ConfigParser.ConfigParser() + self._sync_alpha_config.read(config_filename) + try: sync_alpha = self._sync_alpha_config.getfloat('demod', 'sync_alpha') + except: sync_alpha = 0.05 + self.sync_alpha = sync_alpha + self._side_config = ConfigParser.ConfigParser() + self._side_config.read(config_filename) + try: side = self._side_config.get('usrp', 'side') + except: side = 'A' + self.side = side + self._pll_alpha_config = ConfigParser.ConfigParser() + self._pll_alpha_config.read(config_filename) + try: pll_alpha = self._pll_alpha_config.getfloat('demod', 'pll_alpha') + except: pll_alpha = 0.05 + self.pll_alpha = pll_alpha + self._output_filename_config = ConfigParser.ConfigParser() + self._output_filename_config.read(config_filename) + try: output_filename = self._output_filename_config.get('output', 'filename') + except: output_filename = 'frames.dat' + self.output_filename = output_filename + self.mf_taps = mf_taps = [-0.5/hs,]*hs+[0.5/hs,]*hs + self.max_sync_offset = max_sync_offset = 0.01 + self.max_carrier_offset = max_carrier_offset = 2*math.pi*100e3/sample_rate + self._gain_config = ConfigParser.ConfigParser() + self._gain_config.read(config_filename) + try: gain = self._gain_config.getfloat('usrp', 'gain') + except: gain = 35 + self.gain = gain + self._freq_config = ConfigParser.ConfigParser() + self._freq_config.read(config_filename) + try: freq = self._freq_config.getfloat('usrp', 'freq') + except: freq = 1698e6 + self.freq = freq + + ################################################## + # Blocks + ################################################## + self.agc = gr.agc_cc(1e-6, 1.0, 1.0, 1.0) + self.decoder = noaa.hrpt_decoder() + self.deframer = noaa.hrpt_deframer() + self.frame_sink = gr.file_sink(gr.sizeof_short*1, output_filename) + self.gr_fir_filter_xxx_0 = gr.fir_filter_ccc(1, (mf_taps)) + self.pll = noaa.hrpt_pll_cf(pll_alpha, pll_alpha**2/4.0, max_carrier_offset) + self.sync = noaa.hrpt_sync_fb(sync_alpha, sync_alpha**2/4.0, sps, max_sync_offset) + self.usrp_source = grc_usrp.simple_source_c(which=0, side=side, rx_ant="RXA") + self.usrp_source.set_decim_rate(decim) + self.usrp_source.set_frequency(freq, verbose=True) + self.usrp_source.set_gain(gain) + + ################################################## + # Connections + ################################################## + self.connect((self.usrp_source, 0), (self.agc, 0)) + self.connect((self.deframer, 0), (self.decoder, 0)) + self.connect((self.pll, 0), (self.sync, 0)) + self.connect((self.sync, 0), (self.deframer, 0)) + self.connect((self.deframer, 0), (self.frame_sink, 0)) + self.connect((self.agc, 0), (self.gr_fir_filter_xxx_0, 0)) + self.connect((self.gr_fir_filter_xxx_0, 0), (self.pll, 0)) + + def set_config_filename(self, config_filename): + self.config_filename = config_filename + self._output_filename_config = ConfigParser.ConfigParser() + self._output_filename_config.read(self.config_filename) + if not self._output_filename_config.has_section('output'): + self._output_filename_config.add_section('output') + self._output_filename_config.set('output', 'filename', str(self.output_filename)) + self._output_filename_config.write(open(self.config_filename, 'w')) + self._sync_alpha_config = ConfigParser.ConfigParser() + self._sync_alpha_config.read(self.config_filename) + if not self._sync_alpha_config.has_section('demod'): + self._sync_alpha_config.add_section('demod') + self._sync_alpha_config.set('demod', 'sync_alpha', str(self.sync_alpha)) + self._sync_alpha_config.write(open(self.config_filename, 'w')) + self._pll_alpha_config = ConfigParser.ConfigParser() + self._pll_alpha_config.read(self.config_filename) + if not self._pll_alpha_config.has_section('demod'): + self._pll_alpha_config.add_section('demod') + self._pll_alpha_config.set('demod', 'pll_alpha', str(self.pll_alpha)) + self._pll_alpha_config.write(open(self.config_filename, 'w')) + self._gain_config = ConfigParser.ConfigParser() + self._gain_config.read(self.config_filename) + if not self._gain_config.has_section('usrp'): + self._gain_config.add_section('usrp') + self._gain_config.set('usrp', 'gain', str(self.gain)) + self._gain_config.write(open(self.config_filename, 'w')) + self._freq_config = ConfigParser.ConfigParser() + self._freq_config.read(self.config_filename) + if not self._freq_config.has_section('usrp'): + self._freq_config.add_section('usrp') + self._freq_config.set('usrp', 'freq', str(self.freq)) + self._freq_config.write(open(self.config_filename, 'w')) + self._decim_config = ConfigParser.ConfigParser() + self._decim_config.read(self.config_filename) + if not self._decim_config.has_section('usrp'): + self._decim_config.add_section('usrp') + self._decim_config.set('usrp', 'decim', str(self.decim)) + self._decim_config.write(open(self.config_filename, 'w')) + self._side_config = ConfigParser.ConfigParser() + self._side_config.read(self.config_filename) + if not self._side_config.has_section('usrp'): + self._side_config.add_section('usrp') + self._side_config.set('usrp', 'side', str(self.side)) + self._side_config.write(open(self.config_filename, 'w')) + + def set_decim(self, decim): + self.decim = decim + self.set_sample_rate(64e6/self.decim) + self._decim_config = ConfigParser.ConfigParser() + self._decim_config.read(self.config_filename) + if not self._decim_config.has_section('usrp'): + self._decim_config.add_section('usrp') + self._decim_config.set('usrp', 'decim', str(self.decim)) + self._decim_config.write(open(self.config_filename, 'w')) + self.usrp_source.set_decim_rate(self.decim) + + def set_sym_rate(self, sym_rate): + self.sym_rate = sym_rate + self.set_sps(self.sample_rate/self.sym_rate) + + def set_sample_rate(self, sample_rate): + self.sample_rate = sample_rate + self.set_max_carrier_offset(2*math.pi*100e3/self.sample_rate) + self.set_sps(self.sample_rate/self.sym_rate) + + def set_sps(self, sps): + self.sps = sps + self.set_hs(int(self.sps/2.0)) + + def set_hs(self, hs): + self.hs = hs + self.set_mf_taps([-0.5/self.hs,]*self.hs+[0.5/self.hs,]*self.hs) + + def set_sync_alpha(self, sync_alpha): + self.sync_alpha = sync_alpha + self._sync_alpha_config = ConfigParser.ConfigParser() + self._sync_alpha_config.read(self.config_filename) + if not self._sync_alpha_config.has_section('demod'): + self._sync_alpha_config.add_section('demod') + self._sync_alpha_config.set('demod', 'sync_alpha', str(self.sync_alpha)) + self._sync_alpha_config.write(open(self.config_filename, 'w')) + self.sync.set_alpha(self.sync_alpha) + self.sync.set_beta(self.sync_alpha**2/4.0) + + def set_side(self, side): + self.side = side + self._side_config = ConfigParser.ConfigParser() + self._side_config.read(self.config_filename) + if not self._side_config.has_section('usrp'): + self._side_config.add_section('usrp') + self._side_config.set('usrp', 'side', str(self.side)) + self._side_config.write(open(self.config_filename, 'w')) + + def set_pll_alpha(self, pll_alpha): + self.pll_alpha = pll_alpha + self._pll_alpha_config = ConfigParser.ConfigParser() + self._pll_alpha_config.read(self.config_filename) + if not self._pll_alpha_config.has_section('demod'): + self._pll_alpha_config.add_section('demod') + self._pll_alpha_config.set('demod', 'pll_alpha', str(self.pll_alpha)) + self._pll_alpha_config.write(open(self.config_filename, 'w')) + self.pll.set_alpha(self.pll_alpha) + self.pll.set_beta(self.pll_alpha**2/4.0) + + def set_output_filename(self, output_filename): + self.output_filename = output_filename + self._output_filename_config = ConfigParser.ConfigParser() + self._output_filename_config.read(self.config_filename) + if not self._output_filename_config.has_section('output'): + self._output_filename_config.add_section('output') + self._output_filename_config.set('output', 'filename', str(self.output_filename)) + self._output_filename_config.write(open(self.config_filename, 'w')) + + def set_mf_taps(self, mf_taps): + self.mf_taps = mf_taps + self.gr_fir_filter_xxx_0.set_taps((self.mf_taps)) + + def set_max_sync_offset(self, max_sync_offset): + self.max_sync_offset = max_sync_offset + self.sync.set_max_offset(self.max_sync_offset) + + def set_max_carrier_offset(self, max_carrier_offset): + self.max_carrier_offset = max_carrier_offset + self.pll.set_max_offset(self.max_carrier_offset) + + def set_gain(self, gain): + self.gain = gain + self._gain_config = ConfigParser.ConfigParser() + self._gain_config.read(self.config_filename) + if not self._gain_config.has_section('usrp'): + self._gain_config.add_section('usrp') + self._gain_config.set('usrp', 'gain', str(self.gain)) + self._gain_config.write(open(self.config_filename, 'w')) + self.usrp_source.set_gain(self.gain) + + def set_freq(self, freq): + self.freq = freq + self._freq_config = ConfigParser.ConfigParser() + self._freq_config.read(self.config_filename) + if not self._freq_config.has_section('usrp'): + self._freq_config.add_section('usrp') + self._freq_config.set('usrp', 'freq', str(self.freq)) + self._freq_config.write(open(self.config_filename, 'w')) + self.usrp_source.set_frequency(self.freq) + +if __name__ == '__main__': + parser = OptionParser(option_class=eng_option, usage="%prog: [options]") + (options, args) = parser.parse_args() + if gr.enable_realtime_scheduling() != gr.RT_OK: + print "Error: failed to enable realtime scheduling." + tb = usrp_rx_hrpt_nogui() + tb.start() + raw_input('Press Enter to quit: ') + tb.stop() + |