diff options
| author | Johnathan Corgan <jcorgan@corganenterprises.com> | 2009-11-06 11:21:08 -0800 |
|---|---|---|
| committer | Johnathan Corgan <jcorgan@corganenterprises.com> | 2009-11-09 08:05:23 -0800 |
| commit | 4e0c8a37c3574f59e34186996cef0c44ff50bd16 (patch) | |
| tree | a922b56ebe5f8e3f8ef489cc813a373e5a066f16 /gr-noaa/apps/hrpt_decode.py | |
| parent | df6839b8d323aa11e5739f8597a95e38745ac2e4 (diff) | |
gr-noaa: added HRPT minor frame parsing, renamed scripts
implemented start of minor frame parsing
renamed demod_rx_hrpt to hrpt_demod, new defaults
added configuration flags to hrpt_decoder
added hrpt_decode app
updated file_rx_hrpt with new defaults
updated usrp_rx_hrpt_* with new defaults
Diffstat (limited to 'gr-noaa/apps/hrpt_decode.py')
| -rwxr-xr-x | gr-noaa/apps/hrpt_decode.py | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/gr-noaa/apps/hrpt_decode.py b/gr-noaa/apps/hrpt_decode.py new file mode 100755 index 0000000000..158780b17a --- /dev/null +++ b/gr-noaa/apps/hrpt_decode.py @@ -0,0 +1,98 @@ +#!/usr/bin/env python +################################################## +# Gnuradio Python Flow Graph +# Title: Hrpt Decode +# Generated: Sun Nov 8 10:49:01 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 optparse import OptionParser +import math, os + +class hrpt_decode(gr.top_block): + + def __init__(self, decim=32, pll_alpha=0.01, clock_alpha=0.01, input_filename="frames.hrpt"): + gr.top_block.__init__(self, "Hrpt Decode") + + ################################################## + # Parameters + ################################################## + self.decim = decim + self.pll_alpha = pll_alpha + self.clock_alpha = clock_alpha + self.input_filename = input_filename + + ################################################## + # Variables + ################################################## + self.sym_rate = sym_rate = 600*1109 + self.sample_rate = sample_rate = 64e6/decim + self.sps = sps = sample_rate/sym_rate + 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) + + ################################################## + # Blocks + ################################################## + self.decoder = noaa.hrpt_decoder(True,True) + self.file_source = gr.file_source(gr.sizeof_short*1, input_filename, False) + + ################################################## + # Connections + ################################################## + self.connect((self.file_source, 0), (self.decoder, 0)) + + def set_decim(self, decim): + self.decim = decim + self.set_sample_rate(64e6/self.decim) + + def set_pll_alpha(self, pll_alpha): + self.pll_alpha = pll_alpha + + def set_clock_alpha(self, clock_alpha): + self.clock_alpha = clock_alpha + + def set_input_filename(self, input_filename): + self.input_filename = input_filename + + 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_max_clock_offset(self, max_clock_offset): + self.max_clock_offset = max_clock_offset + + def set_max_carrier_offset(self, max_carrier_offset): + self.max_carrier_offset = max_carrier_offset + + def set_hs(self, hs): + self.hs = hs + +if __name__ == '__main__': + parser = OptionParser(option_class=eng_option, usage="%prog: [options]") + parser.add_option("-d", "--decim", dest="decim", type="intx", default=32, + help="Set decim [default=%default]") + parser.add_option("-p", "--pll-alpha", dest="pll_alpha", type="eng_float", default=eng_notation.num_to_str(0.01), + help="Set pll_alpha [default=%default]") + parser.add_option("-s", "--clock-alpha", dest="clock_alpha", type="eng_float", default=eng_notation.num_to_str(0.01), + help="Set clock_alpha [default=%default]") + parser.add_option("-F", "--input-filename", dest="input_filename", type="string", default="frames.hrpt", + help="Set frames.hrpt [default=%default]") + (options, args) = parser.parse_args() + tb = hrpt_decode(decim=options.decim, pll_alpha=options.pll_alpha, clock_alpha=options.clock_alpha, input_filename=options.input_filename) + tb.run() + |