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#!/usr/bin/env python
#
# Copyright 2008 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
from gnuradio import msdd
from gnuradio.eng_option import eng_option
from optparse import OptionParser
import time
class benchmark_msdd6000(gr.top_block):
def __init__(self, address, options):
gr.top_block.__init__(self)
# Extract the initial options
self.frequency = options.frequency
self.filename = options.filename
self.decim = options.decim
self.gain = options.gain
self.address = address
# Set up and initialize the MSDD receiver
self.port = 10001 # required port
self.src = msdd.source_c(0, 1, self.address, self.port)
self.src.set_decim_rate(self.decim)
self.src.set_desired_packet_size(0, 1460)
self.src.set_pga(0, self.gain)
self.src.set_rx_freq(0, self.frequency)
# Display some info
print "Min PGA: ", self.src.pga_min()
print "Max PGA: ", self.src.pga_max()
print "PGA: ", self.src.pga(0)
print "Decim: ", self.src.decim_rate()
print "Freq: ", self.src.rx_freq(0)
# Build a file sink to save the info for post analysis
self.snk = gr.file_sink(gr.sizeof_gr_complex, self.filename)
# Connect the reciever source to file sink
self.connect(self.src, self.snk)
def main():
''' This is a simple little script to play with retunning of the MSDD board.
You can cycle through frequencies or the attenuation of the board here.
'''
usage="%prog: [options] host_address"
parser = OptionParser(usage=usage, option_class=eng_option, conflict_handler="resolve")
parser.add_option("-f", "--frequency", type="eng_float", default=100e6,
help="set frequency (Hz) [default=%default]")
parser.add_option("-d", "--decim", type="int", default=256,
help="set decimation rate [default=%default]")
parser.add_option("-g", "--gain", type="int", default=32,
help="set receiver gain (dB) [default=%default]")
parser.add_option("-F", "--filename", type="string", default="output.dat",
help="set output filename [default=%default]")
(options, args) = parser.parse_args ()
host_address = args[0]
# Set up benchmark system that simply connects the MSDD source to a file sink
tb = benchmark_msdd6000(host_address, options)
tb.start() # start it here
# Adjust your parameters here. Use the time.sleep(x) function to set a wait period
# between adjusting the parameter.
for i in range(7):
time.sleep(0.5)
if 0:
freq = (tb.src.rx_freq(0) + 1) * 1e6
tb.src.set_rx_freq(0, freq)
print "Setting frequency: ", freq
if 1:
pga = tb.src.pga(0)+10
tb.src.set_pga(0, pga)
print "Setting PGA: ", pga
tb.stop() # stop the radio
if __name__ == '__main__':
main()
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