+++ /dev/null
-#!/usr/bin/env python
-
-from gnuradio import gr, gru
-from gnuradio import usrp
-from gnuradio.eng_option import eng_option
-from gnuradio import eng_notation
-from optparse import OptionParser
-import sys
-
-
-class my_graph(gr.flow_graph):
- def __init__ (self):
- gr.flow_graph.__init__(self)
-
- # controllable values
- self.interp = 64
- self.waveform_type = gr.GR_SIN_WAVE
- self.waveform_ampl = 16000
- self.waveform_freq = 100.12345e3
- self.waveform_offset = 0
- self._instantiate_blocks ()
- self.set_waveform_type (self.waveform_type)
-
- def usb_freq (self):
- return self.u.dac_freq() / self.interp
-
- def usb_throughput (self):
- return self.usb_freq () * 4
-
- def set_waveform_type (self, type):
- '''
- valid waveform types are: gr.GR_SIN_WAVE, gr.GR_CONST_WAVE,
- gr.GR_UNIFORM and gr.GR_GAUSSIAN
- '''
- self._configure_graph (type)
- self.waveform_type = type
-
- def set_waveform_ampl (self, ampl):
- self.waveform_ampl = ampl
- self.siggen.set_amplitude (ampl)
- self.noisegen.set_amplitude (ampl)
-
- def set_waveform_freq (self, freq):
- self.waveform_freq = freq
- self.siggen.set_frequency (freq)
-
- def set_waveform_offset (self, offset):
- self.waveform_offset = offset
- self.siggen.set_offset (offset)
-
- def set_interpolator (self, interp):
- self.interp = interp
- self.siggen.set_sampling_freq (self.usb_freq ())
- self.u.set_interp_rate (interp)
-
- def _instantiate_blocks (self):
- self.src = None
- self.u = usrp.sink_c (0, self.interp)
-
- self.siggen = gr.sig_source_c (self.usb_freq (),
- gr.GR_SIN_WAVE,
- self.waveform_freq,
- self.waveform_ampl,
- self.waveform_offset)
-
- self.noisegen = gr.noise_source_c (gr.GR_UNIFORM,
- self.waveform_ampl)
-
- # self.file_sink = gr.file_sink (gr.sizeof_gr_complex, "siggen.dat")
-
- def _configure_graph (self, type):
- was_running = self.is_running ()
- if was_running:
- self.stop ()
- self.disconnect_all ()
- if type == gr.GR_SIN_WAVE or type == gr.GR_CONST_WAVE:
- self.connect (self.siggen, self.u)
- # self.connect (self.siggen, self.file_sink)
- self.siggen.set_waveform (type)
- self.src = self.siggen
- elif type == gr.GR_UNIFORM or type == gr.GR_GAUSSIAN:
- self.connect (self.noisegen, self.u)
- self.noisegen.set_type (type)
- self.src = self.noisegen
- else:
- raise ValueError, type
- if was_running:
- self.start ()
-
- def set_freq(self, target_freq):
- """
- Set the center frequency we're interested in.
-
- @param target_freq: frequency in Hz
- @rypte: bool
-
- Tuning is a two step process. First we ask the front-end to
- tune as close to the desired frequency as it can. Then we use
- the result of that operation and our target_frequency to
- determine the value for the digital up converter.
- """
- r = self.u.tune(self.subdev._which, self.subdev, target_freq)
- if r:
- #print "r.baseband_freq =", eng_notation.num_to_str(r.baseband_freq)
- #print "r.dxc_freq =", eng_notation.num_to_str(r.dxc_freq)
- #print "r.residual_freq =", eng_notation.num_to_str(r.residual_freq)
- #print "r.inverted =", r.inverted
- return True
-
- return False
-
-
-
-def main ():
- parser = OptionParser (option_class=eng_option)
- parser.add_option ("-T", "--tx-subdev-spec", type="subdev", default=(0, 0),
- help="select USRP Tx side A or B")
- parser.add_option ("-f", "--rf-freq", type="eng_float", default=None,
- help="set RF center frequency to FREQ")
- parser.add_option ("-i", "--interp", type="int", default=64,
- help="set fgpa interpolation rate to INTERP [default=%default]")
-
- parser.add_option ("--sine", dest="type", action="store_const", const=gr.GR_SIN_WAVE,
- help="generate a complex sinusoid [default]", default=gr.GR_SIN_WAVE)
- parser.add_option ("--const", dest="type", action="store_const", const=gr.GR_CONST_WAVE,
- help="generate a constant output")
- parser.add_option ("--gaussian", dest="type", action="store_const", const=gr.GR_GAUSSIAN,
- help="generate Gaussian random output")
- parser.add_option ("--uniform", dest="type", action="store_const", const=gr.GR_UNIFORM,
- help="generate Uniform random output")
-
- parser.add_option ("-w", "--waveform-freq", type="eng_float", default=100e3,
- help="set waveform frequency to FREQ [default=%default]")
- parser.add_option ("-a", "--amplitude", type="eng_float", default=16e3,
- help="set waveform amplitude to AMPLITUDE [default=%default]", metavar="AMPL")
- parser.add_option ("-o", "--offset", type="eng_float", default=0,
- help="set waveform offset to OFFSET [default=%default]")
- (options, args) = parser.parse_args ()
-
- if len(args) != 0:
- parser.print_help()
- raise SystemExit
-
- if options.rf_freq is None:
- sys.stderr.write("usrp_siggen: must specify RF center frequency with -f RF_FREQ\n")
- parser.print_help()
- raise SystemExit
-
- fg = my_graph()
- fg.set_interpolator (options.interp)
- fg.set_waveform_type (options.type)
- fg.set_waveform_freq (options.waveform_freq)
- fg.set_waveform_ampl (options.amplitude)
- fg.set_waveform_offset (options.offset)
-
- # determine the daughterboard subdevice we're using
- if options.tx_subdev_spec is None:
- options.tx_subdev_spec = usrp.pick_tx_subdevice(fg.u)
-
- m = usrp.determine_tx_mux_value(fg.u, options.tx_subdev_spec)
- #print "mux = %#04x" % (m,)
- fg.u.set_mux(m)
- fg.subdev = usrp.selected_subdev(fg.u, options.tx_subdev_spec)
- print "Using TX d'board %s" % (fg.subdev.side_and_name(),)
-
- fg.subdev.set_gain(fg.subdev.gain_range()[1]) # set max Tx gain
-
- if not fg.set_freq(options.rf_freq):
- sys.stderr.write('Failed to set RF frequency\n')
- raise SystemExit
-
- fg.subdev.set_enable(True) # enable transmitter
-
- try:
- fg.run()
- except KeyboardInterrupt:
- pass
-
-if __name__ == '__main__':
- main ()
projects / debian / gnuradio / blobdiff