FGFS-4.1/gr-air-modes
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use eng float for rate so you can say rate=10e6

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This commit is contained in:
Nick Foster 2011-06-01 16:36:00 -07:00
parent ef5c0fbd53
commit e9cf22eb33
1 changed files with 4 additions and 3 deletions
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7
src/python/uhd_modes.py
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@ -53,6 +53,7 @@ class adsb_rx_block (gr.top_block):
self.options = options self.options = options
self.args = args self.args = args
rate = int(options.rate)
if options.filename is None: if options.filename is None:
self.u = uhd.single_usrp_source("", uhd.io_type_t.COMPLEX_FLOAT32, 1) self.u = uhd.single_usrp_source("", uhd.io_type_t.COMPLEX_FLOAT32, 1)
@ -61,7 +62,6 @@ class adsb_rx_block (gr.top_block):
# options.rx_subdev_spec = "" # options.rx_subdev_spec = ""
#self.u.set_subdev_spec(options.rx_subdev_spec) #self.u.set_subdev_spec(options.rx_subdev_spec)
rate = options.rate
self.u.set_samp_rate(rate) self.u.set_samp_rate(rate)
rate = int(self.u.get_samp_rate()) #retrieve actual rate = int(self.u.get_samp_rate()) #retrieve actual
@ -77,7 +77,6 @@ class adsb_rx_block (gr.top_block):
print "Gain is %i" % (self.u.get_gain(),) print "Gain is %i" % (self.u.get_gain(),)
else: else:
rate = options.rate
self.u = gr.file_source(gr.sizeof_gr_complex, options.filename) self.u = gr.file_source(gr.sizeof_gr_complex, options.filename)
print "Rate is %i" % (rate,) print "Rate is %i" % (rate,)
@ -96,6 +95,8 @@ class adsb_rx_block (gr.top_block):
#this is an integrate-and-dump filter to act as a matched filter #this is an integrate-and-dump filter to act as a matched filter
#for the essentially rectangular Mode S pulses. #for the essentially rectangular Mode S pulses.
#if a particular Mode S transponder is using a pulse shaping filter,
#this will not be optimal.
self.filtcoeffs = list() self.filtcoeffs = list()
for i in range(int(rate/2e6)): for i in range(int(rate/2e6)):
self.filtcoeffs.append(1.0 / (rate/2e6)) self.filtcoeffs.append(1.0 / (rate/2e6))
@ -129,7 +130,7 @@ if __name__ == '__main__':
help="set receive frequency in Hz [default=%default]", metavar="FREQ") help="set receive frequency in Hz [default=%default]", metavar="FREQ")
parser.add_option("-g", "--gain", type="int", default=None, parser.add_option("-g", "--gain", type="int", default=None,
help="set RF gain", metavar="dB") help="set RF gain", metavar="dB")
parser.add_option("-r", "--rate", type="int", default=4000000, parser.add_option("-r", "--rate", type="eng_float", default=4000000,
help="set ADC sample rate [default=%default]") help="set ADC sample rate [default=%default]")
parser.add_option("-T", "--threshold", type="eng_float", default=3.0, parser.add_option("-T", "--threshold", type="eng_float", default=3.0,
help="set pulse detection threshold above noise in dB [default=%default]") help="set pulse detection threshold above noise in dB [default=%default]")