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updated gsm_receive_usrp.py, I don't know if it works as I don't have USRP at the moment

This commit is contained in:
Piotr Krysik 2009-07-21 20:41:31 +02:00
parent b332aac8cf
commit 320d807889
1 changed files with 19 additions and 9 deletions
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28
gsm-receiver/src/python/gsm_receive_usrp.py
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@ -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()