from gnuradio import gr, eng_notation
from gnuradio.eng_option import eng_option
from optparse import OptionParser
+from usrp_source import usrp_source_c
from sounder_rx import sounder_rx
-def main():
- parser = OptionParser(option_class=eng_option)
+n2s = eng_notation.num_to_str
+
+class usrp_sounder_rx(gr.hier_block2):
+ def __init__(self, options):
+ gr.hier_block2.__init__(self, "usrp_sounder_rx",
+ gr.io_signature(0,0,0),
+ gr.io_signature(0,0,0))
+
+ self._options = options
+ self._u = usrp_source_c(0,
+ self._options.rx_subdev_spec,
+ self._options.gain,
+ self._options.chip_rate,
+ self._options.freq,
+ self._options.cal,
+ self._options.verbose)
+ self._options.chip_rate = self._u._if_rate
+ self._length = 2**self._options.degree-1
+ self._receiver = sounder_rx(self._options.chip_rate,
+ self._options.degree,
+ self._options.verbose)
+
+ samples = 100 * self._length**2
- # Receive path options
- parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None,
- help="select USRP Rx side A or B (default=first found)")
- parser.add_option("-f", "--freq", type="eng_float", default=0.0,
- help="set center frequency (default=%default)")
- parser.add_option("-c", "--cal", type="eng_float", default=0.0,
- help="set frequency calibration offset (default=%default)")
- parser.add_option("-v", "--verbose", action="store_true", default=False,
- help="print extra debugging info")
- parser.add_option("-d", "--max-delay", type="eng_float", default=10e-6,
- help="set maximum delay spread (default=%default)")
- parser.add_option("-r", "--chip-rate", type="eng_float", default=8e6,
- help="set sounder chip rate (default=%default)")
- parser.add_option("-g", "--gain", type="eng_float", default=None,
- help="set output amplitude (default=%default)")
- (options, args) = parser.parse_args()
+ self.define_component("usrp", self._u)
+ self.define_component("head", gr.head(gr.sizeof_gr_complex, samples))
+ self.define_component("rx", self._receiver)
+ self.define_component("c2m", gr.complex_to_mag())
+ self.define_component("s2v", gr.stream_to_vector(gr.sizeof_float, self._length))
+ self.define_component("lpf", gr.single_pole_iir_filter_ff(self._options.alpha, self._length))
+ self.define_component("v2s", gr.vector_to_stream(gr.sizeof_float, self._length))
+ self.define_component("sink", gr.file_sink(gr.sizeof_float, "impulse.dat"))
- if len(args) != 0:
- parser.print_help()
- sys.exit(1)
+ self.connect("usrp", 0, "head", 0)
+ self.connect("head", 0, "rx", 0)
+ self.connect("rx", 0, "c2m", 0)
+ self.connect("c2m", 0, "s2v", 0)
+ self.connect("s2v", 0, "lpf", 0)
+ self.connect("lpf", 0, "v2s", 0)
+ self.connect("v2s", 0, "sink", 0)
+
+ if self._options.verbose:
+ print "Chip rate is", n2s(self._options.chip_rate), "chips/sec"
+ print "Resolution is", n2s(1.0/self._options.chip_rate), "sec"
+ print "Using PN code of degree", self._options.degree
+
+def main():
+ parser = OptionParser(option_class=eng_option)
+ parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None,
+ help="select USRP Rx side A or B (default=first found)")
+ parser.add_option("-f", "--freq", type="eng_float", default=0.0,
+ help="set center frequency (default=%default)")
+ parser.add_option("-c", "--cal", type="eng_float", default=0.0,
+ help="set frequency calibration offset (default=%default)")
+ parser.add_option("-v", "--verbose", action="store_true", default=False,
+ help="print extra debugging info")
+ parser.add_option("-d", "--degree", type="int", default=10,
+ help="set PN code degree (length=2**degree-1, default=%default)")
+ parser.add_option("-r", "--chip-rate", type="eng_float", default=8e6,
+ help="set sounder chip rate (default=%default)")
+ parser.add_option("-g", "--gain", type="eng_float", default=None,
+ help="set receiver gain (default=%default)")
+ parser.add_option("", "--alpha", type="eng_float", default=1.0,
+ help="set smoothing constant (default=%default)")
+ (options, args) = parser.parse_args()
+ if len(args) != 0:
+ parser.print_help()
+ sys.exit(1)
- # Create an instance of a hierarchical block
- top_block = sounder_rx(options.rx_subdev_spec, options.freq, options.cal,
- options.verbose, options.max_delay, options.chip_rate,
- options.gain)
-
- # Create an instance of a runtime, passing it the top block
- # to process
- runtime = gr.runtime(top_block)
+ top_block = usrp_sounder_rx(options)
+ runtime = gr.runtime(top_block)
- try:
- # Run forever
- runtime.run()
- except KeyboardInterrupt:
- # Ctrl-C exits
- pass
+ try:
+ runtime.run()
+ except KeyboardInterrupt:
+ pass
if __name__ == '__main__':
main ()
projects / debian / gnuradio / blobdiff