3 # Copyright 2004 Free Software Foundation, Inc.
5 # This file is part of GNU Radio
7 # GNU Radio is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3, or (at your option)
12 # GNU Radio is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with GNU Radio; see the file COPYING. If not, write to
19 # the Free Software Foundation, Inc., 51 Franklin Street,
20 # Boston, MA 02110-1301, USA.
23 from gnuradio import gr, gru
24 from gnuradio import usrp
25 from gnuradio import eng_notation
26 from gnuradio.eng_option import eng_option
27 from gnuradio.wxgui import stdgui, fftsink, scopesink, slider
28 from optparse import OptionParser
31 class app_flow_graph (stdgui.gui_flow_graph):
32 def __init__(self, frame, panel, vbox, argv):
33 stdgui.gui_flow_graph.__init__ (self, frame, panel, vbox, argv)
38 parser = OptionParser (option_class=eng_option)
39 parser.add_option ("-d", "--decim", type="int", default=8,
40 help="set fgpa decimation rate to DECIM")
41 parser.add_option ("-c", "--ddc-freq", type="eng_float", default=0,
42 help="set Digital downconverter frequency to FREQ", metavar="FREQ")
43 parser.add_option ("-f", "--freq", type="eng_float", default=950e6,
44 help="set RF downconverter frequency to FREQ", metavar="FREQ")
45 parser.add_option ("-m", "--mux", type="intx", default=0x32103210,
46 help="set fpga FR_RX_MUX register to MUX")
47 parser.add_option ("-g", "--gain", type="eng_float", default=0,
48 help="set Rx PGA gain in dB (default 0 dB)")
49 (options, args) = parser.parse_args ()
51 self.u = usrp.source_c (0, options.decim, 1, gru.hexint(options.mux), 0)
53 self.u.set_verbose (0)
55 input_rate = self.u.adc_freq () / self.u.decim_rate ()
57 block = fftsink.fft_sink_c (self, panel, fft_size=1024, sample_rate=input_rate)
58 self.connect (self.u, block)
59 vbox.Add (block.win, 10, wx.EXPAND)
62 c2f_1 = gr.complex_to_float ()
63 scope = scopesink.scope_sink_f (self, panel, "Rx Data", input_rate)
64 vbox.Add (scope.win, 6, wx.EXPAND)
66 self.connect (self.u,c2f_1)
67 self.connect ((c2f_1, 0), (scope, 0))
68 self.connect ((c2f_1, 1), (scope, 1))
71 rms_complex = gr.rms_cf(.0001)
72 rms_i = gr.rms_ff(.0001)
73 rms_q = gr.rms_ff(.0001)
75 self.connect(self.u,rms_complex)
76 self.connect((c2f_1,0),rms_i)
77 self.connect((c2f_1,1),rms_q)
83 self.connect(rms_complex,ns1)
84 self.connect(rms_i,ns2)
85 self.connect(rms_q,ns3)
89 #vbox.Add(slider.slider(panel, 0, 104, self.set_gain), 1, wx.ALIGN_CENTER)
91 #vbox.Add(slider.slider(panel, 0, 4095, self.set_gain_gc1), 1, wx.ALIGN_CENTER)
92 #vbox.Add(slider.slider(panel, 0, 31, self.set_gain_gc2), 1, wx.ALIGN_CENTER)
93 #vbox.Add(slider.slider(panel, 0, 1, self.set_gain_dl), 1, wx.ALIGN_CENTER)
94 #vbox.Add(slider.slider(panel, 0, 200, self.set_gain_i), 1, wx.ALIGN_CENTER)
95 #vbox.Add(slider.slider(panel, 0, 200, self.set_gain_q), 1, wx.ALIGN_CENTER)
98 #vbox.Add(slider.slider(panel, -200, 200, self.set_offset_i), 1, wx.ALIGN_CENTER)
99 #vbox.Add(slider.slider(panel, -200, 200, self.set_offset_q), 1, wx.ALIGN_CENTER)
101 vbox.Add(slider.slider(panel, 380, 480, self.set_rf_freq), 1, wx.EXPAND|wx.ALIGN_CENTER)
102 vbox.Add(slider.slider(panel, -32000, +32000, self.set_if_freq), 1, wx.EXPAND|wx.ALIGN_CENTER)
103 vbox.Add(slider.slider(panel, 0, 4095, self.set_gain), 1, wx.EXPAND|wx.ALIGN_CENTER)
105 # build small control area at bottom
106 hbox = wx.BoxSizer (wx.HORIZONTAL)
107 hbox.Add ((1, 1), 1, wx.EXPAND)
108 hbox.Add (wx.StaticText (panel, -1, "Set ddc freq: "), 0, wx.ALIGN_CENTER)
109 self.tc_freq = wx.TextCtrl (panel, -1, "", style=wx.TE_PROCESS_ENTER)
110 hbox.Add (self.tc_freq, 0, wx.ALIGN_CENTER)
111 wx.EVT_TEXT_ENTER (self.tc_freq, self.tc_freq.GetId(), self.handle_text_enter)
112 hbox.Add ((1, 1), 1, wx.EXPAND)
113 # add it to the main vbox
114 vbox.Add (hbox, 0, wx.EXPAND)
116 self.update_status_bar ()
118 def set_rf_freq (self,freq):
119 (success,actual_freq) = self.set_freq(1e6*freq)
121 print "Failed on ",freq
122 def set_if_freq (self,freq):
123 self.u.set_rx_freq(0,freq*1e3)
125 def set_gain (self,gain):
126 self.rfrx.set_gain(gain)
128 def set_gain_i (self,gain):
129 self.u.set_pga(0,gain/10.0)
130 def set_gain_q (self,gain):
131 self.u.set_pga(1,gain/10.0)
133 def set_offset_i(self,offset):
134 self.offset = (self.offset & 0x0000ffff) | ((offset&0xffff)<<16)
135 self.u._write_fpga_reg (3,self.offset)
137 def set_offset_q(self,offset):
138 self.offset = (self.offset & 0xffff0000) | (offset&0xffff)
139 self.u._write_fpga_reg (3,self.offset)
141 def handle_text_enter (self, event):
142 str = event.GetString ()
143 self.tc_freq.Clear ()
144 self.u.set_rx_freq (0, eng_notation.str_to_num (str))
145 self.update_status_bar ()
147 def update_status_bar (self):
148 ddc_freq = self.u.rx_freq (0)
149 decim_rate = self.u.decim_rate ()
150 sample_rate = self.u.adc_freq () / decim_rate
151 msg = "decim: %d %sS/s DDC: %s" % (
153 eng_notation.num_to_str (sample_rate),
154 eng_notation.num_to_str (ddc_freq))
156 self.frame.GetStatusBar().SetStatusText (msg, 1)
158 def set_gain(self,gain):
159 assert gain>=0 and gain<4096
160 self.u.write_aux_dac(0,0,int(gain))
163 app = stdgui.stdapp (app_flow_graph, "USRP FFT")
166 if __name__ == '__main__':