diff options
| -rwxr-xr-x | gr-utils/src/python/usrp2_siggen.py | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gr-utils/src/python/usrp2_siggen.py b/gr-utils/src/python/usrp2_siggen.py index 6597170a4..d3be4b26a 100755 --- a/gr-utils/src/python/usrp2_siggen.py +++ b/gr-utils/src/python/usrp2_siggen.py @@ -25,6 +25,7 @@ from gnuradio import usrp2 from gnuradio.eng_option import eng_option from optparse import OptionParser import sys +import math n2s = eng_notation.num_to_str @@ -78,6 +79,19 @@ class siggen_top_block(gr.top_block): self._src = gr.add_cc() self.connect(self._src1,(self._src,0)) self.connect(self._src2,(self._src,1)) + elif options.type == "sweep": + # rf freq is center frequency + # waveform_freq is total swept width + # waveform2_freq is sweep rate + # will sweep from (rf_freq-waveform_freq/2) to (rf_freq+waveform_freq/2) + self._src1 = gr.sig_source_f(eth_rate, + gr.GR_TRI_WAVE, + options.waveform2_freq, + 1.0, # options.waveform_freq, + -0.5) + self._src2 = gr.frequency_modulator_fc(options.waveform_freq*2*math.pi/eth_rate) + self._src = gr.multiply_const_cc(options.amplitude) + self.connect(self._src1,self._src2,self._src) else: sys.stderr.write('Unknown waveform type\n') raise SystemExit, 1 @@ -139,6 +153,8 @@ def get_options(): help="generate Uniform random output") parser.add_option("--2tone", dest="type", action="store_const", const="2tone", help="generate Two Tone signal for IMD testing") + parser.add_option("--sweep", dest="type", action="store_const", const="sweep", + help="generate a swept sine wave") (options, args) = parser.parse_args () if len(args) != 0: |