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#!/usr/bin/env python
#
# Copyright 2004 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 2, 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
from gnuradio import usrp
from gnuradio import eng_notation
from gnuradio.eng_option import eng_option
from gnuradio.wxgui import stdgui, fftsink, scopesink, slider
from optparse import OptionParser
import wx
class app_flow_graph (stdgui.gui_flow_graph):
def __init__(self, frame, panel, vbox, argv):
stdgui.gui_flow_graph.__init__ (self, frame, panel, vbox, argv)
self.frame = frame
self.panel = panel
parser = OptionParser (option_class=eng_option)
parser.add_option ("-d", "--decim", type="int", default=8,
help="set fgpa decimation rate to DECIM")
parser.add_option ("-c", "--ddc-freq", type="eng_float", default=0,
help="set Digital downconverter frequency to FREQ", metavar="FREQ")
parser.add_option ("-f", "--freq", type="eng_float", default=950e6,
help="set RF downconverter frequency to FREQ", metavar="FREQ")
parser.add_option ("-m", "--mux", type="intx", default=0x32103210,
help="set fpga FR_RX_MUX register to MUX")
parser.add_option ("-g", "--gain", type="eng_float", default=0,
help="set Rx PGA gain in dB (default 0 dB)")
(options, args) = parser.parse_args ()
self.u = usrp.source_c (0, options.decim, 1, gru.hexint(options.mux), 0)
self.u.set_verbose (0)
input_rate = self.u.adc_freq () / self.u.decim_rate ()
block = fftsink.fft_sink_c (self, panel, fft_size=1024, sample_rate=input_rate)
self.connect (self.u, block)
vbox.Add (block.win, 10, wx.EXPAND)
if 0:
c2f_1 = gr.complex_to_float ()
scope = scopesink.scope_sink_f (self, panel, "Rx Data", input_rate)
vbox.Add (scope.win, 6, wx.EXPAND)
self.connect (self.u,c2f_1)
self.connect ((c2f_1, 0), (scope, 0))
self.connect ((c2f_1, 1), (scope, 1))
if 0:
rms_complex = gr.rms_cf(.0001)
rms_i = gr.rms_ff(.0001)
rms_q = gr.rms_ff(.0001)
self.connect(self.u,rms_complex)
self.connect((c2f_1,0),rms_i)
self.connect((c2f_1,1),rms_q)
ns1 = gr.null_sink(4)
ns2 = gr.null_sink(4)
ns3 = gr.null_sink(4)
self.connect(rms_complex,ns1)
self.connect(rms_i,ns2)
self.connect(rms_q,ns3)
# sliders
#vbox.Add(slider.slider(panel, 0, 104, self.set_gain), 1, wx.ALIGN_CENTER)
#vbox.Add(slider.slider(panel, 0, 4095, self.set_gain_gc1), 1, wx.ALIGN_CENTER)
#vbox.Add(slider.slider(panel, 0, 31, self.set_gain_gc2), 1, wx.ALIGN_CENTER)
#vbox.Add(slider.slider(panel, 0, 1, self.set_gain_dl), 1, wx.ALIGN_CENTER)
#vbox.Add(slider.slider(panel, 0, 200, self.set_gain_i), 1, wx.ALIGN_CENTER)
#vbox.Add(slider.slider(panel, 0, 200, self.set_gain_q), 1, wx.ALIGN_CENTER)
self.offset = 0
#vbox.Add(slider.slider(panel, -200, 200, self.set_offset_i), 1, wx.ALIGN_CENTER)
#vbox.Add(slider.slider(panel, -200, 200, self.set_offset_q), 1, wx.ALIGN_CENTER)
vbox.Add(slider.slider(panel, 380, 480, self.set_rf_freq), 1, wx.EXPAND|wx.ALIGN_CENTER)
vbox.Add(slider.slider(panel, -32000, +32000, self.set_if_freq), 1, wx.EXPAND|wx.ALIGN_CENTER)
vbox.Add(slider.slider(panel, 0, 4095, self.set_gain), 1, wx.EXPAND|wx.ALIGN_CENTER)
# build small control area at bottom
hbox = wx.BoxSizer (wx.HORIZONTAL)
hbox.Add ((1, 1), 1, wx.EXPAND)
hbox.Add (wx.StaticText (panel, -1, "Set ddc freq: "), 0, wx.ALIGN_CENTER)
self.tc_freq = wx.TextCtrl (panel, -1, "", style=wx.TE_PROCESS_ENTER)
hbox.Add (self.tc_freq, 0, wx.ALIGN_CENTER)
wx.EVT_TEXT_ENTER (self.tc_freq, self.tc_freq.GetId(), self.handle_text_enter)
hbox.Add ((1, 1), 1, wx.EXPAND)
# add it to the main vbox
vbox.Add (hbox, 0, wx.EXPAND)
self.update_status_bar ()
def set_rf_freq (self,freq):
(success,actual_freq) = self.set_freq(1e6*freq)
if not success:
print "Failed on ",freq
def set_if_freq (self,freq):
self.u.set_rx_freq(0,freq*1e3)
def set_gain (self,gain):
self.rfrx.set_gain(gain)
def set_gain_i (self,gain):
self.u.set_pga(0,gain/10.0)
def set_gain_q (self,gain):
self.u.set_pga(1,gain/10.0)
def set_offset_i(self,offset):
self.offset = (self.offset & 0x0000ffff) | ((offset&0xffff)<<16)
self.u._write_fpga_reg (3,self.offset)
def set_offset_q(self,offset):
self.offset = (self.offset & 0xffff0000) | (offset&0xffff)
self.u._write_fpga_reg (3,self.offset)
def handle_text_enter (self, event):
str = event.GetString ()
self.tc_freq.Clear ()
self.u.set_rx_freq (0, eng_notation.str_to_num (str))
self.update_status_bar ()
def update_status_bar (self):
ddc_freq = self.u.rx_freq (0)
decim_rate = self.u.decim_rate ()
sample_rate = self.u.adc_freq () / decim_rate
msg = "decim: %d %sS/s DDC: %s" % (
decim_rate,
eng_notation.num_to_str (sample_rate),
eng_notation.num_to_str (ddc_freq))
self.frame.GetStatusBar().SetStatusText (msg, 1)
def set_gain(self,gain):
assert gain>=0 and gain<4096
self.u.write_aux_dac(0,0,int(gain))
def main ():
app = stdgui.stdapp (app_flow_graph, "USRP FFT")
app.MainLoop ()
if __name__ == '__main__':
main ()
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