From b5e0b08ac7cdb84920c60d459a80d052e646f447 Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Thu, 6 Oct 2011 14:03:20 -0400
Subject: uhd: cleaning up and updating some script info.
---
.../python/usrp/usrp_wfm_rcv2_nogui.py | 183 ---------------------
1 file changed, 183 deletions(-)
delete mode 100755 gnuradio-examples/python/usrp/usrp_wfm_rcv2_nogui.py
(limited to 'gnuradio-examples/python/usrp/usrp_wfm_rcv2_nogui.py')
diff --git a/gnuradio-examples/python/usrp/usrp_wfm_rcv2_nogui.py b/gnuradio-examples/python/usrp/usrp_wfm_rcv2_nogui.py
deleted file mode 100755
index edfbc36571..0000000000
--- a/gnuradio-examples/python/usrp/usrp_wfm_rcv2_nogui.py
+++ /dev/null
@@ -1,183 +0,0 @@
-#!/usr/bin/env python
-#
-# Copyright 2005,2006,2007 Free Software Foundation, Inc.
-#
-# This file is part of GNU Radio
-#
-# GNU Radio is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 3, or (at your option)
-# any later version.
-#
-# GNU Radio is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Radio; see the file COPYING. If not, write to
-# the Free Software Foundation, Inc., 51 Franklin Street,
-# Boston, MA 02110-1301, USA.
-#
-
-from gnuradio import gr, gru, eng_notation, optfir
-from gnuradio import audio
-from gnuradio import usrp
-from gnuradio import blks2
-from gnuradio.eng_option import eng_option
-from optparse import OptionParser
-from usrpm import usrp_dbid
-import sys
-import math
-
-def calc_dxc_freq(target_freq, baseband_freq, fs):
- dxc_temp = (target_freq - baseband_freq) % fs
-
- if dxc_temp < fs/2.0:
- dxc_freq = - dxc_temp
- inverted = False
- else:
- dxc_freq = fs - dxc_temp
- inverted = True
-
- return (dxc_freq, inverted)
-
-def pick_subdevice(u):
- """
- The user didn't specify a subdevice on the command line.
- Try for one of these, in order: TV_RX, BASIC_RX, whatever is on side A.
-
- @return a subdev_spec
- """
- return usrp.pick_subdev(u, (usrp_dbid.TV_RX,
- usrp_dbid.TV_RX_REV_2,
- usrp_dbid.TV_RX_REV_3,
- usrp_dbid.TV_RX_MIMO,
- usrp_dbid.TV_RX_REV_2_MIMO,
- usrp_dbid.TV_RX_REV_3_MIMO,
- usrp_dbid.BASIC_RX))
-
-
-class wfm_rx_block (gr.top_block):
-
- def __init__(self):
- gr.top_block.__init__(self)
-
- 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=A)")
- parser.add_option("", "--f1", type="eng_float", default=100.7e6,
- help="set 1st station frequency to FREQ", metavar="FREQ")
- parser.add_option("", "--f2", type="eng_float", default=102.5e6,
- help="set 2nd station freq to FREQ", metavar="FREQ")
- parser.add_option("-g", "--gain", type="eng_float", default=40,
- help="set gain in dB (default is midpoint)")
- parser.add_option("-O", "--audio-output", type="string", default="",
- help="pcm device name. E.g., hw:0,0 or surround51 or /dev/dsp")
-
- (options, args) = parser.parse_args()
- if len(args) != 0:
- parser.print_help()
- sys.exit(1)
-
- if abs(options.f1) < 1e6:
- options.f1 *= 1e6
-
- if abs(options.f2) < 1e6:
- options.f2 *= 1e6
-
- if abs(options.f1 - options.f2) > 5.5e6:
- print "Sorry, two stations must be within 5.5MHz of each other"
- raise SystemExit
-
- f = (options.f1, options.f2)
-
- self.vol = .1
- self.state = "FREQ"
-
- # build graph
-
- self.u = usrp.source_c(0, nchan=2) # usrp is data source
-
- adc_rate = self.u.adc_rate() # 64 MS/s
- usrp_decim = 200
- self.u.set_decim_rate(usrp_decim)
- usrp_rate = adc_rate / usrp_decim # 320 kS/s
- chanfilt_decim = 1
- demod_rate = usrp_rate / chanfilt_decim
- audio_decimation = 10
- audio_rate = demod_rate / audio_decimation # 32 kHz
-
-
- if options.rx_subdev_spec is None:
- options.rx_subdev_spec = pick_subdevice(self.u)
-
- mv = usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec)
- mv |= (mv << 8) & 0xff00 # both DDC inputs setup same way
- self.u.set_mux(mv)
- self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec)
- print "Using RX d'board %s" % (self.subdev.side_and_name(),)
-
-
- # deinterleave two channels from FPGA
- di = gr.deinterleave(gr.sizeof_gr_complex)
-
- # wire up the head of the chain
- self.connect(self.u, di)
-
- # sound card as final sink
- audio_sink = audio.sink(int(audio_rate), options.audio_output)
-
- # taps for channel filter
- chan_filt_coeffs = optfir.low_pass (1, # gain
- usrp_rate, # sampling rate
- 80e3, # passband cutoff
- 115e3, # stopband cutoff
- 0.1, # passband ripple
- 60) # stopband attenuation
- #print len(chan_filt_coeffs)
-
- mid_freq = (f[0] + f[1]) / 2
- # set front end PLL to middle frequency
- tune_result = self.subdev.set_freq(mid_freq)
-
- for n in range(2):
- chan_filt = gr.fir_filter_ccf (chanfilt_decim, chan_filt_coeffs)
- guts = blks2.wfm_rcv (demod_rate, audio_decimation)
- volume_control = gr.multiply_const_ff(self.vol)
- self.connect((di, n), chan_filt)
- self.connect(chan_filt, guts, volume_control)
- self.connect(volume_control, (audio_sink, n))
- dxc_freq, inverted = calc_dxc_freq(f[n], tune_result.baseband_freq,
- self.u.converter_rate())
- self.u.set_rx_freq(n, dxc_freq)
-
-
- if options.gain is None:
- # if no gain was specified, use the mid-point in dB
- g = self.subdev.gain_range()
- options.gain = float(g[0]+g[1])/2
-
-
- # set initial values
- self.set_gain(options.gain)
-
-
- def set_vol (self, vol):
- self.vol = vol
- self.volume_control.set_k(self.vol)
-
-
- def set_gain(self, gain):
- self.subdev.set_gain(gain)
-
- def __del__(self):
- # Avoid weak-reference error
- del self.subdev
-
-if __name__ == '__main__':
- tb = wfm_rx_block()
- try:
- tb.run()
- except KeyboardInterrupt:
- pass
--
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