FGFS-4.1/gr-air-modes
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First stab at adding rtlsdr support to uhd_modes.py. Should probably rename that file.

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This commit is contained in:
Nick Foster 2012-06-13 09:24:23 -07:00
parent 61cc4917a8
commit bb98eeaa97
1 changed files with 23 additions and 5 deletions
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28
apps/uhd_modes.py
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@ -25,7 +25,6 @@ my_position = [30.2, -97.6]
#my_position = None #my_position = None
from gnuradio import gr, gru, optfir, eng_notation, blks2 from gnuradio import gr, gru, optfir, eng_notation, blks2
from gnuradio import uhd
from gnuradio.eng_option import eng_option from gnuradio.eng_option import eng_option
from optparse import OptionParser from optparse import OptionParser
import time, os, sys, threading import time, os, sys, threading
@ -54,7 +53,9 @@ class adsb_rx_block (gr.top_block):
self.args = args self.args = args
rate = int(options.rate) rate = int(options.rate)
if options.filename is None and options.udp is None: if options.filename is None and options.udp is None and not options.rtlsdr:
#UHD source by default
from gnuradio import uhd
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)
time_spec = uhd.time_spec(0.0) time_spec = uhd.time_spec(0.0)
self.u.set_time_now(time_spec) self.u.set_time_now(time_spec)
@ -75,15 +76,29 @@ class adsb_rx_block (gr.top_block):
if not(self.tune(options.freq)): if not(self.tune(options.freq)):
print "Failed to set initial frequency" print "Failed to set initial frequency"
print "Setting gain to %i" % (options.gain,) print "Setting gain to %i" % options.gain
self.u.set_gain(options.gain) self.u.set_gain(options.gain)
print "Gain is %i" % (self.u.get_gain(),) print "Gain is %i" % self.u.get_gain()
elif options.rtlsdr: #RTLSDR dongle
import osmosdr
self.u = osmosdr.source_c()
self.u.set_sample_rate(2.4e6) #fixed for RTL dongles
if not self.u.set_center_freq(options.freq):
print "Failed to set initial frequency"
self.u.set_gain_mode(0) #manual gain mode
self.u.set_gain(options.gain)
print "Gain is %i" % self.u.get_gain()
else: else:
if options.filename is not None: if options.filename is not None:
self.u = gr.file_source(gr.sizeof_gr_complex, options.filename) self.u = gr.file_source(gr.sizeof_gr_complex, options.filename)
else: elif options.udp is not None:
self.u = gr.udp_source(gr.sizeof_gr_complex, "localhost", options.udp) self.u = gr.udp_source(gr.sizeof_gr_complex, "localhost", options.udp)
else:
raise Exception("No valid source selected")
print "Rate is %i" % (rate,) print "Rate is %i" % (rate,)
@ -149,6 +164,9 @@ if __name__ == '__main__':
help="Use UDP source on specified port") help="Use UDP source on specified port")
parser.add_option("-m","--multiplayer", type="string", default=None, parser.add_option("-m","--multiplayer", type="string", default=None,
help="FlightGear server to send aircraft data, in format host:port") help="FlightGear server to send aircraft data, in format host:port")
parser.add_option("-d","--rtlsdr", action="store_true", default=False,
help="Use RTLSDR dongle instead of UHD source")
(options, args) = parser.parse_args() (options, args) = parser.parse_args()
if options.location is not None: if options.location is not None: