diff options
Diffstat (limited to 'gr-noaa/examples/file_rx_hrpt.py')
| -rwxr-xr-x | gr-noaa/examples/file_rx_hrpt.py | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/gr-noaa/examples/file_rx_hrpt.py b/gr-noaa/examples/file_rx_hrpt.py new file mode 100755 index 000000000..fcd1832f6 --- /dev/null +++ b/gr-noaa/examples/file_rx_hrpt.py @@ -0,0 +1,239 @@ +#!/usr/bin/env python +################################################## +# Gnuradio Python Flow Graph +# Title: USRP HRPT Receiver +# Generated: Thu Oct 27 13:48:25 2011 +################################################## + +from gnuradio import digital +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 optparse import OptionParser +import ConfigParser +import math, os + +class file_rx_hrpt(gr.top_block): + + def __init__(self): + gr.top_block.__init__(self, "USRP HRPT Receiver") + + ################################################## + # Variables + ################################################## + self.sym_rate = sym_rate = 600*1109 + self.sample_rate = sample_rate = 4e6 + self.sps = sps = sample_rate/sym_rate + self.config_filename = config_filename = os.environ['HOME']+'/.gnuradio/config.conf' + self._pll_alpha_config = ConfigParser.ConfigParser() + self._pll_alpha_config.read(config_filename) + try: pll_alpha = self._pll_alpha_config.getfloat('usrp_rx_hrpt', 'pll_alpha') + except: pll_alpha = 0.01 + 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('usrp_rx_hrpt', 'filename') + except: output_filename = 'frames.hrpt' + self.output_filename = output_filename + self.max_clock_offset = max_clock_offset = 100e-6 + self.max_carrier_offset = max_carrier_offset = 2*math.pi*100e3/sample_rate + self.hs = hs = int(sps/2.0) + self._gain_config = ConfigParser.ConfigParser() + self._gain_config.read(config_filename) + try: gain = self._gain_config.getfloat('usrp_rx_hrpt', '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_rx_hrpt', 'freq') + except: freq = 1698e6 + self.freq = freq + self._clock_alpha_config = ConfigParser.ConfigParser() + self._clock_alpha_config.read(config_filename) + try: clock_alpha = self._clock_alpha_config.getfloat('usrp_rx_hrpt', 'clock_alpha') + except: clock_alpha = 0.01 + self.clock_alpha = clock_alpha + + ################################################## + # Blocks + ################################################## + self.throttle = gr.throttle(gr.sizeof_short*1, 2*sample_rate) + self.pll = noaa.hrpt_pll_cf(pll_alpha, pll_alpha**2/4.0, max_carrier_offset) + self.gr_moving_average_xx_0 = gr.moving_average_ff(hs, 1.0/hs, 4000) + self.gr_interleaved_short_to_complex_0 = gr.interleaved_short_to_complex() + self.gr_file_source_0 = gr.file_source(gr.sizeof_short*1, "input_filename", False) + self.frame_sink = gr.file_sink(gr.sizeof_short*1, output_filename) + self.frame_sink.set_unbuffered(False) + self.digital_clock_recovery_mm_xx_0 = digital.clock_recovery_mm_ff(sps/2.0, clock_alpha**2/4.0, 0.5, clock_alpha, max_clock_offset) + self.digital_binary_slicer_fb_0 = digital.binary_slicer_fb() + self.deframer = noaa.hrpt_deframer() + self.decoder = noaa.hrpt_decoder(True,True) + self.agc = gr.agc_cc(1e-6, 1.0, 1.0, 1.0) + + ################################################## + # Connections + ################################################## + self.connect((self.gr_moving_average_xx_0, 0), (self.digital_clock_recovery_mm_xx_0, 0)) + self.connect((self.pll, 0), (self.gr_moving_average_xx_0, 0)) + self.connect((self.agc, 0), (self.pll, 0)) + self.connect((self.deframer, 0), (self.decoder, 0)) + self.connect((self.deframer, 0), (self.frame_sink, 0)) + self.connect((self.gr_interleaved_short_to_complex_0, 0), (self.agc, 0)) + self.connect((self.throttle, 0), (self.gr_interleaved_short_to_complex_0, 0)) + self.connect((self.gr_file_source_0, 0), (self.throttle, 0)) + self.connect((self.digital_clock_recovery_mm_xx_0, 0), (self.digital_binary_slicer_fb_0, 0)) + self.connect((self.digital_binary_slicer_fb_0, 0), (self.deframer, 0)) + + def get_sym_rate(self): + return self.sym_rate + + def set_sym_rate(self, sym_rate): + self.sym_rate = sym_rate + self.set_sps(self.sample_rate/self.sym_rate) + + def get_sample_rate(self): + return self.sample_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 get_sps(self): + return self.sps + + def set_sps(self, sps): + self.sps = sps + self.set_hs(int(self.sps/2.0)) + self.digital_clock_recovery_mm_xx_0.set_omega(self.sps/2.0) + + def get_config_filename(self): + return self.config_filename + + def set_config_filename(self, config_filename): + self.config_filename = config_filename + self._freq_config = ConfigParser.ConfigParser() + self._freq_config.read(self.config_filename) + if not self._freq_config.has_section('usrp_rx_hrpt'): + self._freq_config.add_section('usrp_rx_hrpt') + self._freq_config.set('usrp_rx_hrpt', 'freq', str(self.freq)) + self._freq_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_rx_hrpt'): + self._gain_config.add_section('usrp_rx_hrpt') + self._gain_config.set('usrp_rx_hrpt', 'gain', str(self.gain)) + self._gain_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('usrp_rx_hrpt'): + self._pll_alpha_config.add_section('usrp_rx_hrpt') + self._pll_alpha_config.set('usrp_rx_hrpt', 'pll_alpha', str(self.pll_alpha)) + self._pll_alpha_config.write(open(self.config_filename, 'w')) + self._clock_alpha_config = ConfigParser.ConfigParser() + self._clock_alpha_config.read(self.config_filename) + if not self._clock_alpha_config.has_section('usrp_rx_hrpt'): + self._clock_alpha_config.add_section('usrp_rx_hrpt') + self._clock_alpha_config.set('usrp_rx_hrpt', 'clock_alpha', str(self.clock_alpha)) + self._clock_alpha_config.write(open(self.config_filename, 'w')) + self._output_filename_config = ConfigParser.ConfigParser() + self._output_filename_config.read(self.config_filename) + if not self._output_filename_config.has_section('usrp_rx_hrpt'): + self._output_filename_config.add_section('usrp_rx_hrpt') + self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename)) + self._output_filename_config.write(open(self.config_filename, 'w')) + + def get_pll_alpha(self): + return self.pll_alpha + + def set_pll_alpha(self, pll_alpha): + self.pll_alpha = pll_alpha + self.pll.set_alpha(self.pll_alpha) + self.pll.set_beta(self.pll_alpha**2/4.0) + self._pll_alpha_config = ConfigParser.ConfigParser() + self._pll_alpha_config.read(self.config_filename) + if not self._pll_alpha_config.has_section('usrp_rx_hrpt'): + self._pll_alpha_config.add_section('usrp_rx_hrpt') + self._pll_alpha_config.set('usrp_rx_hrpt', 'pll_alpha', str(self.pll_alpha)) + self._pll_alpha_config.write(open(self.config_filename, 'w')) + + def get_output_filename(self): + return self.output_filename + + 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('usrp_rx_hrpt'): + self._output_filename_config.add_section('usrp_rx_hrpt') + self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename)) + self._output_filename_config.write(open(self.config_filename, 'w')) + + def get_max_clock_offset(self): + return self.max_clock_offset + + def set_max_clock_offset(self, max_clock_offset): + self.max_clock_offset = max_clock_offset + + def get_max_carrier_offset(self): + return self.max_carrier_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 get_hs(self): + return self.hs + + def set_hs(self, hs): + self.hs = hs + self.gr_moving_average_xx_0.set_length_and_scale(self.hs, 1.0/self.hs) + + def get_gain(self): + return self.gain + + 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_rx_hrpt'): + self._gain_config.add_section('usrp_rx_hrpt') + self._gain_config.set('usrp_rx_hrpt', 'gain', str(self.gain)) + self._gain_config.write(open(self.config_filename, 'w')) + + def get_freq(self): + return self.freq + + 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_rx_hrpt'): + self._freq_config.add_section('usrp_rx_hrpt') + self._freq_config.set('usrp_rx_hrpt', 'freq', str(self.freq)) + self._freq_config.write(open(self.config_filename, 'w')) + + def get_clock_alpha(self): + return self.clock_alpha + + def set_clock_alpha(self, clock_alpha): + self.clock_alpha = clock_alpha + self.digital_clock_recovery_mm_xx_0.set_gain_omega(self.clock_alpha**2/4.0) + self.digital_clock_recovery_mm_xx_0.set_gain_mu(self.clock_alpha) + self._clock_alpha_config = ConfigParser.ConfigParser() + self._clock_alpha_config.read(self.config_filename) + if not self._clock_alpha_config.has_section('usrp_rx_hrpt'): + self._clock_alpha_config.add_section('usrp_rx_hrpt') + self._clock_alpha_config.set('usrp_rx_hrpt', 'clock_alpha', str(self.clock_alpha)) + self._clock_alpha_config.write(open(self.config_filename, 'w')) + +if __name__ == '__main__': + parser = OptionParser(option_class=eng_option, usage="%prog: [options]") + (options, args) = parser.parse_args() + tb = file_rx_hrpt() + tb.start() + raw_input('Press Enter to quit: ') + tb.stop() + |