diff options
| -rwxr-xr-x | gsm-receiver/src/python/gsm_receive_usrp.py | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/gsm-receiver/src/python/gsm_receive_usrp.py b/gsm-receiver/src/python/gsm_receive_usrp.py index 7418d54..9107f80 100755 --- a/gsm-receiver/src/python/gsm_receive_usrp.py +++ b/gsm-receiver/src/python/gsm_receive_usrp.py @@ -22,21 +22,28 @@ def pick_subdevice(u): return (1, 0) return (0, 0) -class tune(gr.feval_dd): +class tuner(gr.feval_dd): def __init__(self, top_block): gr.feval_dd.__init__(self) self.top_block = top_block - # self.center_freq = 0 def eval(self, freq_offet): - # self.center_freq = self.center_freq - freq_offet - self.top_block.set_frequency(freq_offet) + self.top_block.set_center_frequency(freq_offet) + return freq_offet + +class synchronizer(gr.feval_dd): + def __init__(self, top_block): + gr.feval_dd.__init__(self) + self.top_block = top_block + + def eval(self, timing_offset): + self.top_block.set_timing(timing_offset) return freq_offet class gsm_receiver_first_blood(gr.top_block): def __init__(self): gr.top_block.__init__(self) (options, args) = self._process_options() - self.tune_callback = tune(self) + self.tuner_callback = tuner(self) self.options = options self.args = args self._set_rates() @@ -104,19 +111,19 @@ class gsm_receiver_first_blood(gr.top_block): return interpolator def _set_receiver(self): - receiver = gsm.receiver_cf(self.tune_callback, self.options.osr) + receiver = gsm.receiver_cf(self.tuner_callback, self.synchronizer_callback, self.options.osr, "0000000000000000") return receiver def _process_options(self): parser = OptionParser(option_class=eng_option) - parser.add_option("-d", "--decim", type="int", default=128, + parser.add_option("-d", "--decim", type="int", default=112, help="Set USRP decimation rate to DECIM [default=%default]") parser.add_option("-I", "--inputfile", type="string", default="cfile", help="Input filename") parser.add_option("-O", "--outputfile", type="string", default="cfile2.out", help="Output filename") parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, - help="Select USRP Rx side A or B (default=first one with a daughterboard)") + help="Select USRP Rx side A or B (default=first one with a daughterboard)") parser.add_option("-r", "--osr", type="int", default=4, help="Oversampling ratio [default=%default]") parser.add_option("-f", "--freq", type="eng_float", default="950.4M", @@ -126,9 +133,12 @@ class gsm_receiver_first_blood(gr.top_block): (options, args) = parser.parse_args () return (options, args) - def set_frequency(self, center_freq): + def set_center_frequency(self, center_freq): self.filtr.set_center_freq(center_freq) + def set_timing(self, timing_offset): + pass + def main(): try: gsm_receiver_first_blood().run() |