git-svn-id: http://op25.osmocom.org/svn/trunk@92 65a5c917-d112-43f1-993d-58c26a4786bemaster
stevie
15 years ago
parent
ead89bda24
commit
4f20d87a37
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#!/usr/bin/env python |
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# |
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# Copyright 2004,2005,2006,2007 Free Software Foundation, Inc. |
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# |
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# This file is part of GNU Radio |
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# |
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# GNU Radio is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 3, or (at your option) |
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# any later version. |
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# |
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# GNU Radio is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with GNU Radio; see the file COPYING. If not, write to |
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# the Free Software Foundation, Inc., 51 Franklin Street, |
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# Boston, MA 02110-1301, USA. |
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# |
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|
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# Based on usrp_fsk4_oscope.py - sound card coded added by KA1RBI ( ikj1234i at yahoo dot com ) |
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# print "Loading revised usrp_oscope with additional options for scopesink..." |
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from gnuradio import gr, gru, optfir |
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from gnuradio import audio |
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from gnuradio import eng_notation |
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from gnuradio.eng_option import eng_option |
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from gnuradio.wxgui import stdgui2, scopesink2, form, slider |
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from optparse import OptionParser |
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import wx |
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import sys |
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from gnuradio import fsk4 |
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from math import pi |
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import threading |
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class app_top_block(stdgui2.std_top_block): |
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def __init__( self, frame, panel, vbox, argv): |
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stdgui2.std_top_block.__init__( self, frame, panel, vbox, argv) |
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self.frame = frame |
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self.panel = panel |
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self.offset = 0.0 |
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parser = OptionParser(option_class=eng_option) |
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parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=None, |
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help="select USRP Rx side A or B (default=first one with a daughterboard)") |
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parser.add_option("-d", "--decim", type="int", default=1, |
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help="set fgpa decimation rate to DECIM [default=%default]") |
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parser.add_option("-f", "--freq", type="eng_float", default=None, |
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help="set frequency to FREQ", metavar="FREQ") |
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parser.add_option("-p", "--protocol", type="int", default=0, |
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help="set protocol: 0 = RDLAP 19.2kbps (default); 1 = APCO25") |
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parser.add_option("-g", "--gain", type="eng_float", default=1, |
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help="set gain multiplier") |
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parser.add_option("-8", "--width-8", action="store_true", default=False, |
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help="Enable 8-bit samples across USB") |
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parser.add_option( "--no-hb", action="store_true", default=False, |
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help="don't use halfband filter in usrp") |
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parser.add_option("-C", "--basic-complex", action="store_true", default=False, |
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help="Use both inputs of a basicRX or LFRX as a single Complex input channel") |
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parser.add_option("-D", "--basic-dualchan", action="store_true", default=False, |
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help="Use both inputs of a basicRX or LFRX as seperate Real input channels") |
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parser.add_option("-n", "--frame-decim", type="int", default=1, |
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help="set oscope frame decimation factor to n [default=1]") |
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parser.add_option("-I", "--audio-input", type="string", default="", help="pcm input device name. E.g., hw:0,0 or /dev/dsp") |
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parser.add_option("-s", "--sample-rate", type="int", default=48000, help="sound card input sample rate") |
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parser.add_option("-v", "--v-scale", type="eng_float", default=1000, |
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help="set oscope initial V/div to SCALE [default=%default]") |
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parser.add_option("-t", "--t-scale", type="eng_float", default=49e-6, |
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help="set oscope initial s/div to SCALE [default=50us]") |
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(options, args) = parser.parse_args() |
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if len(args) != 0: |
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parser.print_help() |
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sys.exit(1) |
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self.show_debug_info = True |
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# build the graph |
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self.num_inputs=1 |
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self.msgq = gr.msg_queue(2) # queue that holds a maximum of 2 messages |
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if options.protocol == 0: |
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# ---------- RD-LAP 19.2 kbps (9600 ksps), 25kHz channel, |
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self.symbol_rate = 9600 # symbol rate; at 2 bits/symbol this corresponds to 19.2kbps |
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self.channel_decimation = 1 # decimation (final rate should be at least several symbol rate) |
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self.input_sample_rate = options.sample_rate / options.decim # for USRP: 64MHz / FPGA decimation rate |
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self.protocol_processing = fsk4.rdlap_f(self.msgq, 0) # desired protocol processing block selected here |
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self.channel_rate = self.input_sample_rate / self.channel_decimation |
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# symbol shaping filter characteristics |
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symbol_coeffs = gr.firdes.root_raised_cosine (1.0, # gain |
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self.channel_rate , # sampling rate |
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self.symbol_rate, # symbol rate |
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0.2, # width of trans. band |
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500) # filter type |
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if options.protocol == 1: |
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# ---------- APCO-25 C4FM Test Data |
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self.symbol_rate = 4800 # symbol rate; at 2 bits/symbol this corresponds to 19.2kbps |
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self.channel_decimation = 1 # decimation |
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self.input_sample_rate = options.sample_rate / options.decim # for USRP: 64MHz / FPGA decimation rate |
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self.protocol_processing = fsk4.apco25_f(self.msgq, 0) |
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self.channel_rate = self.input_sample_rate / self.channel_decimation |
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# symbol shaping filter |
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symbol_coeffs = gr.firdes.root_raised_cosine (1.0, # gain |
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self.channel_rate , # sampling rate |
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self.symbol_rate, # symbol rate |
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0.2, # width of trans. band |
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500) # filter type |
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# ----------------- End of setup block |
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self.audio_input = audio.source(options.sample_rate, options.audio_input) |
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self.audio_gain = gr.multiply_const_ff(options.gain) |
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self.scope2 = scopesink2.scope_sink_f(panel, sample_rate=self.symbol_rate, |
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frame_decim=1, |
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v_scale=2, |
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t_scale= 0.025, |
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num_inputs=self.num_inputs) |
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# also note: |
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# this specifies the nominal frequency deviation for the 4-level fsk signal |
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symbol_decim = 1 |
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self.symbol_filter = gr.fir_filter_fff (symbol_decim, symbol_coeffs) |
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# eventually specify: sample rate, symbol rate |
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self.demod_fsk4 = fsk4.demod_ff(self.msgq, self.channel_rate , self.symbol_rate) |
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#self.rdlap_processing = fsk4.rdlap_f(self.msgq, 0) |
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self.connect(self.audio_input, self.audio_gain, self.symbol_filter, self.demod_fsk4, self.protocol_processing) |
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self.connect(self.demod_fsk4, self.scope2) |
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# --------------- End of most of the 4L-FSK hack & slash |
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self._build_gui(vbox) |
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# set initial values |
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self.set_gain(options.gain) |
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if self.show_debug_info: |
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# self.myform['decim'].set_value(self.u.decim_rate()) |
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self.myform['dbname'].set_value("alsa") |
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self.myform['baseband'].set_value(0) |
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self.myform['ddc'].set_value(0) |
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if self.num_inputs==2: |
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self.myform['baseband2'].set_value(0) |
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self.myform['ddc2'].set_value(0) |
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def _set_status_msg(self, msg): |
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self.frame.GetStatusBar().SetStatusText(msg, 0) |
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def _build_gui(self, vbox): |
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def _form_set_freq(kv): |
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return self.set_freq(kv['freq']) |
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def _form_set_freq2(kv): |
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return self.set_freq2(kv['freq2']) |
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vbox.Add(self.scope2.win, 10, wx.EXPAND) |
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# add control area at the bottom |
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self.myform = myform = form.form() |
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hbox = wx.BoxSizer(wx.HORIZONTAL) |
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hbox.Add((5,0), 0, 0) |
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myform['gain'] = form.slider_field(parent=self.panel, sizer=hbox, label="Gain", |
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weight=3, |
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min=1, max=150, |
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callback=self.set_gain) |
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hbox.Add((5,0), 0, 0) |
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vbox.Add(hbox, 0, wx.EXPAND) |
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self._build_subpanel(vbox) |
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def _build_subpanel(self, vbox_arg): |
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# build a secondary information panel (sometimes hidden) |
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# FIXME figure out how to have this be a subpanel that is always |
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# created, but has its visibility controlled by foo.Show(True/False) |
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# def _form_set_decim(kv): |
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# return self.set_decim(kv['decim']) |
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if not(self.show_debug_info): |
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return |
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panel = self.panel |
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vbox = vbox_arg |
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myform = self.myform |
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#panel = wx.Panel(self.panel, -1) |
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#vbox = wx.BoxSizer(wx.VERTICAL) |
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hbox = wx.BoxSizer(wx.HORIZONTAL) |
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hbox.Add((5,0), 0) |
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# myform['decim'] = form.int_field( |
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# parent=panel, sizer=hbox, label="Decim", |
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# callback=myform.check_input_and_call(_form_set_decim, self._set_status_msg)) |
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hbox.Add((5,0), 1) |
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myform['fs@usb'] = form.static_float_field( |
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parent=panel, sizer=hbox, label="Fs@USB") |
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hbox.Add((5,0), 1) |
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myform['dbname'] = form.static_text_field( |
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parent=panel, sizer=hbox) |
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hbox.Add((5,0), 1) |
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myform['baseband'] = form.static_float_field( |
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parent=panel, sizer=hbox, label="Analog BB") |
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hbox.Add((5,0), 1) |
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myform['ddc'] = form.static_float_field( |
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parent=panel, sizer=hbox, label="DDC") |
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if self.num_inputs==2: |
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hbox.Add((1,0), 1) |
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myform['baseband2'] = form.static_float_field( |
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parent=panel, sizer=hbox, label="BB2") |
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hbox.Add((1,0), 1) |
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myform['ddc2'] = form.static_float_field( |
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parent=panel, sizer=hbox, label="DDC2") |
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hbox.Add((5,0), 0) |
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vbox.Add(hbox, 0, wx.EXPAND) |
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def set_gain(self, gain): |
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self.myform['gain'].set_value(gain) # update displayed value |
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self.audio_gain.set_k(gain) |
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# def set_decim(self, decim): |
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# ok = self.u.set_decim_rate(decim) |
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# if not ok: |
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# print "set_decim failed" |
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# input_rate = self.u.adc_freq() / self.u.decim_rate() |
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# self.scope.set_sample_rate(input_rate) |
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# if self.show_debug_info: # update displayed values |
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# self.myform['decim'].set_value(self.u.decim_rate()) |
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# self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate()) |
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# return ok |
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#----------------------------------------------------------------------- |
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# Queue watcher. Dispatches measured delay to callback. |
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#----------------------------------------------------------------------- |
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class queue_watcher (threading.Thread): |
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def __init__ (self, msgq, callback, **kwds): |
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threading.Thread.__init__ (self, **kwds) |
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self.setDaemon (1) |
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self.msgq = msgq |
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self.callback = callback |
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self.keep_running = True |
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self.start () |
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def run (self): |
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while (self.keep_running): |
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msg = self.msgq.delete_head() # blocking read of message queue |
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frequency_correction = msg.arg1() |
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self.callback(frequency_correction) |
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def main (): |
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app = stdgui2.stdapp( app_top_block, "USRP O'scope + 4LFSK", nstatus=1 ) |
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app.MainLoop() |
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if __name__ == '__main__': |
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main () |
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Reference in new issue