root / gr-noaa / apps / usrp_rx_hrpt_nogui.py @ accb9f2f
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| 1 | #!/usr/bin/env python
|
|---|---|
| 2 | ##################################################
|
| 3 | # Gnuradio Python Flow Graph
|
| 4 | # Title: Usrp Rx Hrpt Nogui
|
| 5 | # Generated: Mon Nov 9 08:03:25 2009
|
| 6 | ##################################################
|
| 7 | |
| 8 | from gnuradio import eng_notation |
| 9 | from gnuradio import gr |
| 10 | from gnuradio import noaa |
| 11 | from gnuradio.eng_option import eng_option |
| 12 | from gnuradio.gr import firdes |
| 13 | from grc_gnuradio import usrp as grc_usrp |
| 14 | from optparse import OptionParser |
| 15 | import ConfigParser |
| 16 | import math, os |
| 17 | |
| 18 | class usrp_rx_hrpt_nogui(gr.top_block): |
| 19 | |
| 20 | def __init__(self): |
| 21 | gr.top_block.__init__(self, "Usrp Rx Hrpt Nogui") |
| 22 | |
| 23 | ##################################################
|
| 24 | # Variables
|
| 25 | ##################################################
|
| 26 | self.config_filename = config_filename = os.environ['HOME']+'/.gnuradio/config.conf' |
| 27 | self._decim_config = ConfigParser.ConfigParser()
|
| 28 | self._decim_config.read(config_filename)
|
| 29 | try: decim = self._decim_config.getfloat('usrp_rx_hrpt', 'decim') |
| 30 | except: decim = 32 |
| 31 | self.decim = decim
|
| 32 | self.sym_rate = sym_rate = 600*1109 |
| 33 | self.sample_rate = sample_rate = 64e6/decim |
| 34 | self.sps = sps = sample_rate/sym_rate
|
| 35 | self._side_config = ConfigParser.ConfigParser()
|
| 36 | self._side_config.read(config_filename)
|
| 37 | try: side = self._side_config.get('usrp_rx_hrpt', 'side') |
| 38 | except: side = 'A' |
| 39 | self.side = side
|
| 40 | self._pll_alpha_config = ConfigParser.ConfigParser()
|
| 41 | self._pll_alpha_config.read(config_filename)
|
| 42 | try: pll_alpha = self._pll_alpha_config.getfloat('usrp_rx_hrpt', 'pll_alpha') |
| 43 | except: pll_alpha = 0.01 |
| 44 | self.pll_alpha = pll_alpha
|
| 45 | self._output_filename_config = ConfigParser.ConfigParser()
|
| 46 | self._output_filename_config.read(config_filename)
|
| 47 | try: output_filename = self._output_filename_config.get('usrp_rx_hrpt', 'filename') |
| 48 | except: output_filename = 'frames.hrpt' |
| 49 | self.output_filename = output_filename
|
| 50 | self.max_clock_offset = max_clock_offset = 100e-6 |
| 51 | self.max_carrier_offset = max_carrier_offset = 2*math.pi*100e3/sample_rate |
| 52 | self.hs = hs = int(sps/2.0) |
| 53 | self._gain_config = ConfigParser.ConfigParser()
|
| 54 | self._gain_config.read(config_filename)
|
| 55 | try: gain = self._gain_config.getfloat('usrp_rx_hrpt', 'gain') |
| 56 | except: gain = 35 |
| 57 | self.gain = gain
|
| 58 | self._freq_config = ConfigParser.ConfigParser()
|
| 59 | self._freq_config.read(config_filename)
|
| 60 | try: freq = self._freq_config.getfloat('usrp_rx_hrpt', 'freq') |
| 61 | except: freq = 1698e6 |
| 62 | self.freq = freq
|
| 63 | self._clock_alpha_config = ConfigParser.ConfigParser()
|
| 64 | self._clock_alpha_config.read(config_filename)
|
| 65 | try: clock_alpha = self._clock_alpha_config.getfloat('usrp_rx_hrpt', 'clock_alpha') |
| 66 | except: clock_alpha = 0.01 |
| 67 | self.clock_alpha = clock_alpha
|
| 68 | |
| 69 | ##################################################
|
| 70 | # Blocks
|
| 71 | ##################################################
|
| 72 | self.agc = gr.agc_cc(1e-6, 1.0, 1.0, 1.0) |
| 73 | self.decoder = noaa.hrpt_decoder(True,True) |
| 74 | self.deframer = noaa.hrpt_deframer()
|
| 75 | self.frame_sink = gr.file_sink(gr.sizeof_short*1, output_filename) |
| 76 | self.gr_binary_slicer_fb_0 = gr.binary_slicer_fb()
|
| 77 | self.gr_clock_recovery_mm_xx_0 = gr.clock_recovery_mm_ff(sps/2.0, clock_alpha**2/4.0, 0.5, clock_alpha, max_clock_offset) |
| 78 | self.gr_moving_average_xx_0 = gr.moving_average_ff(hs, 1.0/hs, 4000) |
| 79 | self.pll = noaa.hrpt_pll_cf(pll_alpha, pll_alpha**2/4.0, max_carrier_offset) |
| 80 | self.usrp_source = grc_usrp.simple_source_c(which=0, side=side, rx_ant="RXA") |
| 81 | self.usrp_source.set_decim_rate(decim)
|
| 82 | self.usrp_source.set_frequency(freq, verbose=True) |
| 83 | self.usrp_source.set_gain(gain)
|
| 84 | |
| 85 | ##################################################
|
| 86 | # Connections
|
| 87 | ##################################################
|
| 88 | self.connect((self.usrp_source, 0), (self.agc, 0)) |
| 89 | self.connect((self.agc, 0), (self.pll, 0)) |
| 90 | self.connect((self.pll, 0), (self.gr_moving_average_xx_0, 0)) |
| 91 | self.connect((self.gr_moving_average_xx_0, 0), (self.gr_clock_recovery_mm_xx_0, 0)) |
| 92 | self.connect((self.gr_clock_recovery_mm_xx_0, 0), (self.gr_binary_slicer_fb_0, 0)) |
| 93 | self.connect((self.deframer, 0), (self.frame_sink, 0)) |
| 94 | self.connect((self.deframer, 0), (self.decoder, 0)) |
| 95 | self.connect((self.gr_binary_slicer_fb_0, 0), (self.deframer, 0)) |
| 96 | |
| 97 | def set_config_filename(self, config_filename): |
| 98 | self.config_filename = config_filename
|
| 99 | self._gain_config = ConfigParser.ConfigParser()
|
| 100 | self._gain_config.read(self.config_filename) |
| 101 | if not self._gain_config.has_section('usrp_rx_hrpt'): |
| 102 | self._gain_config.add_section('usrp_rx_hrpt') |
| 103 | self._gain_config.set('usrp_rx_hrpt', 'gain', str(self.gain)) |
| 104 | self._gain_config.write(open(self.config_filename, 'w')) |
| 105 | self._freq_config = ConfigParser.ConfigParser()
|
| 106 | self._freq_config.read(self.config_filename) |
| 107 | if not self._freq_config.has_section('usrp_rx_hrpt'): |
| 108 | self._freq_config.add_section('usrp_rx_hrpt') |
| 109 | self._freq_config.set('usrp_rx_hrpt', 'freq', str(self.freq)) |
| 110 | self._freq_config.write(open(self.config_filename, 'w')) |
| 111 | self._side_config = ConfigParser.ConfigParser()
|
| 112 | self._side_config.read(self.config_filename) |
| 113 | if not self._side_config.has_section('usrp_rx_hrpt'): |
| 114 | self._side_config.add_section('usrp_rx_hrpt') |
| 115 | self._side_config.set('usrp_rx_hrpt', 'side', str(self.side)) |
| 116 | self._side_config.write(open(self.config_filename, 'w')) |
| 117 | self._decim_config = ConfigParser.ConfigParser()
|
| 118 | self._decim_config.read(self.config_filename) |
| 119 | if not self._decim_config.has_section('usrp_rx_hrpt'): |
| 120 | self._decim_config.add_section('usrp_rx_hrpt') |
| 121 | self._decim_config.set('usrp_rx_hrpt', 'decim', str(self.decim)) |
| 122 | self._decim_config.write(open(self.config_filename, 'w')) |
| 123 | self._pll_alpha_config = ConfigParser.ConfigParser()
|
| 124 | self._pll_alpha_config.read(self.config_filename) |
| 125 | if not self._pll_alpha_config.has_section('usrp_rx_hrpt'): |
| 126 | self._pll_alpha_config.add_section('usrp_rx_hrpt') |
| 127 | self._pll_alpha_config.set('usrp_rx_hrpt', 'pll_alpha', str(self.pll_alpha)) |
| 128 | self._pll_alpha_config.write(open(self.config_filename, 'w')) |
| 129 | self._clock_alpha_config = ConfigParser.ConfigParser()
|
| 130 | self._clock_alpha_config.read(self.config_filename) |
| 131 | if not self._clock_alpha_config.has_section('usrp_rx_hrpt'): |
| 132 | self._clock_alpha_config.add_section('usrp_rx_hrpt') |
| 133 | self._clock_alpha_config.set('usrp_rx_hrpt', 'clock_alpha', str(self.clock_alpha)) |
| 134 | self._clock_alpha_config.write(open(self.config_filename, 'w')) |
| 135 | self._output_filename_config = ConfigParser.ConfigParser()
|
| 136 | self._output_filename_config.read(self.config_filename) |
| 137 | if not self._output_filename_config.has_section('usrp_rx_hrpt'): |
| 138 | self._output_filename_config.add_section('usrp_rx_hrpt') |
| 139 | self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename)) |
| 140 | self._output_filename_config.write(open(self.config_filename, 'w')) |
| 141 | |
| 142 | def set_decim(self, decim): |
| 143 | self.decim = decim
|
| 144 | self.set_sample_rate(64e6/self.decim) |
| 145 | self.usrp_source.set_decim_rate(self.decim) |
| 146 | self._decim_config = ConfigParser.ConfigParser()
|
| 147 | self._decim_config.read(self.config_filename) |
| 148 | if not self._decim_config.has_section('usrp_rx_hrpt'): |
| 149 | self._decim_config.add_section('usrp_rx_hrpt') |
| 150 | self._decim_config.set('usrp_rx_hrpt', 'decim', str(self.decim)) |
| 151 | self._decim_config.write(open(self.config_filename, 'w')) |
| 152 | |
| 153 | def set_sym_rate(self, sym_rate): |
| 154 | self.sym_rate = sym_rate
|
| 155 | self.set_sps(self.sample_rate/self.sym_rate) |
| 156 | |
| 157 | def set_sample_rate(self, sample_rate): |
| 158 | self.sample_rate = sample_rate
|
| 159 | self.set_max_carrier_offset(2*math.pi*100e3/self.sample_rate) |
| 160 | self.set_sps(self.sample_rate/self.sym_rate) |
| 161 | |
| 162 | def set_sps(self, sps): |
| 163 | self.sps = sps
|
| 164 | self.set_hs(int(self.sps/2.0)) |
| 165 | self.gr_clock_recovery_mm_xx_0.set_omega(self.sps/2.0) |
| 166 | |
| 167 | def set_side(self, side): |
| 168 | self.side = side
|
| 169 | self._side_config = ConfigParser.ConfigParser()
|
| 170 | self._side_config.read(self.config_filename) |
| 171 | if not self._side_config.has_section('usrp_rx_hrpt'): |
| 172 | self._side_config.add_section('usrp_rx_hrpt') |
| 173 | self._side_config.set('usrp_rx_hrpt', 'side', str(self.side)) |
| 174 | self._side_config.write(open(self.config_filename, 'w')) |
| 175 | |
| 176 | def set_pll_alpha(self, pll_alpha): |
| 177 | self.pll_alpha = pll_alpha
|
| 178 | self.pll.set_alpha(self.pll_alpha) |
| 179 | self.pll.set_beta(self.pll_alpha**2/4.0) |
| 180 | self._pll_alpha_config = ConfigParser.ConfigParser()
|
| 181 | self._pll_alpha_config.read(self.config_filename) |
| 182 | if not self._pll_alpha_config.has_section('usrp_rx_hrpt'): |
| 183 | self._pll_alpha_config.add_section('usrp_rx_hrpt') |
| 184 | self._pll_alpha_config.set('usrp_rx_hrpt', 'pll_alpha', str(self.pll_alpha)) |
| 185 | self._pll_alpha_config.write(open(self.config_filename, 'w')) |
| 186 | |
| 187 | def set_output_filename(self, output_filename): |
| 188 | self.output_filename = output_filename
|
| 189 | self._output_filename_config = ConfigParser.ConfigParser()
|
| 190 | self._output_filename_config.read(self.config_filename) |
| 191 | if not self._output_filename_config.has_section('usrp_rx_hrpt'): |
| 192 | self._output_filename_config.add_section('usrp_rx_hrpt') |
| 193 | self._output_filename_config.set('usrp_rx_hrpt', 'filename', str(self.output_filename)) |
| 194 | self._output_filename_config.write(open(self.config_filename, 'w')) |
| 195 | |
| 196 | def set_max_clock_offset(self, max_clock_offset): |
| 197 | self.max_clock_offset = max_clock_offset
|
| 198 | |
| 199 | def set_max_carrier_offset(self, max_carrier_offset): |
| 200 | self.max_carrier_offset = max_carrier_offset
|
| 201 | self.pll.set_max_offset(self.max_carrier_offset) |
| 202 | |
| 203 | def set_hs(self, hs): |
| 204 | self.hs = hs
|
| 205 | self.gr_moving_average_xx_0.set_length_and_scale(self.hs, 1.0/self.hs) |
| 206 | |
| 207 | def set_gain(self, gain): |
| 208 | self.gain = gain
|
| 209 | self._gain_config = ConfigParser.ConfigParser()
|
| 210 | self._gain_config.read(self.config_filename) |
| 211 | if not self._gain_config.has_section('usrp_rx_hrpt'): |
| 212 | self._gain_config.add_section('usrp_rx_hrpt') |
| 213 | self._gain_config.set('usrp_rx_hrpt', 'gain', str(self.gain)) |
| 214 | self._gain_config.write(open(self.config_filename, 'w')) |
| 215 | self.usrp_source.set_gain(self.gain) |
| 216 | |
| 217 | def set_freq(self, freq): |
| 218 | self.freq = freq
|
| 219 | self._freq_config = ConfigParser.ConfigParser()
|
| 220 | self._freq_config.read(self.config_filename) |
| 221 | if not self._freq_config.has_section('usrp_rx_hrpt'): |
| 222 | self._freq_config.add_section('usrp_rx_hrpt') |
| 223 | self._freq_config.set('usrp_rx_hrpt', 'freq', str(self.freq)) |
| 224 | self._freq_config.write(open(self.config_filename, 'w')) |
| 225 | self.usrp_source.set_frequency(self.freq) |
| 226 | |
| 227 | def set_clock_alpha(self, clock_alpha): |
| 228 | self.clock_alpha = clock_alpha
|
| 229 | self.gr_clock_recovery_mm_xx_0.set_gain_omega(self.clock_alpha**2/4.0) |
| 230 | self.gr_clock_recovery_mm_xx_0.set_gain_mu(self.clock_alpha) |
| 231 | self._clock_alpha_config = ConfigParser.ConfigParser()
|
| 232 | self._clock_alpha_config.read(self.config_filename) |
| 233 | if not self._clock_alpha_config.has_section('usrp_rx_hrpt'): |
| 234 | self._clock_alpha_config.add_section('usrp_rx_hrpt') |
| 235 | self._clock_alpha_config.set('usrp_rx_hrpt', 'clock_alpha', str(self.clock_alpha)) |
| 236 | self._clock_alpha_config.write(open(self.config_filename, 'w')) |
| 237 | |
| 238 | if __name__ == '__main__': |
| 239 | parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
|
| 240 | (options, args) = parser.parse_args() |
| 241 | if gr.enable_realtime_scheduling() != gr.RT_OK:
|
| 242 | print "Error: failed to enable realtime scheduling." |
| 243 | tb = usrp_rx_hrpt_nogui() |
| 244 | tb.start() |
| 245 | raw_input('Press Enter to quit: ') |
| 246 | tb.stop() |
| 247 |