2 # Copyright 2008 Free Software Foundation, Inc.
4 # This file is part of GNU Radio
6 # GNU Radio is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 3, or (at your option)
11 # GNU Radio is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with GNU Radio; see the file COPYING. If not, write to
18 # the Free Software Foundation, Inc., 51 Franklin Street,
19 # Boston, MA 02110-1301, USA.
22 ##################################################
24 ##################################################
27 from gnuradio import gr
28 from pubsub import pubsub
29 from constants import *
31 class ac_couple_block(gr.hier_block2):
33 AC couple the incoming stream by subtracting out the low pass signal.
34 Mute the low pass filter to disable ac coupling.
37 def __init__(self, controller, ac_couple_key, ac_couple, sample_rate_key):
38 gr.hier_block2.__init__(
41 gr.io_signature(1, 1, gr.sizeof_float),
42 gr.io_signature(1, 1, gr.sizeof_float),
45 lpf = gr.single_pole_iir_filter_ff(0.0)
49 self.connect(self, sub, self)
50 self.connect(self, lpf, mute, (sub, 1))
52 controller.subscribe(ac_couple_key, lambda x: mute.set_mute(not x))
53 controller.subscribe(sample_rate_key, lambda x: lpf.set_taps(0.05))
55 controller[ac_couple_key] = ac_couple
56 controller[sample_rate_key] = controller[sample_rate_key]
58 ##################################################
59 # Scope sink block (wrapper for old wxgui)
60 ##################################################
61 class _scope_sink_base(gr.hier_block2):
63 A scope block with a gui window.
71 size=scope_window.DEFAULT_WIN_SIZE,
77 frame_rate=scope_window.DEFAULT_FRAME_RATE,
78 **kwargs #do not end with a comma
80 if not t_scale: t_scale = 10.0/sample_rate
82 gr.hier_block2.__init__(
85 gr.io_signature(num_inputs, num_inputs, self._item_size),
86 gr.io_signature(0, 0, 0),
89 msgq = gr.msg_queue(2)
90 scope = gr.oscope_sink_f(sample_rate, msgq)
92 self.controller = pubsub()
93 self.controller.subscribe(SAMPLE_RATE_KEY, scope.set_sample_rate)
94 self.controller.publish(SAMPLE_RATE_KEY, scope.sample_rate)
95 self.controller.subscribe(DECIMATION_KEY, scope.set_decimation_count)
96 self.controller.publish(DECIMATION_KEY, scope.get_decimation_count)
97 self.controller.subscribe(TRIGGER_LEVEL_KEY, scope.set_trigger_level)
98 self.controller.publish(TRIGGER_LEVEL_KEY, scope.get_trigger_level)
99 self.controller.subscribe(TRIGGER_MODE_KEY, scope.set_trigger_mode)
100 self.controller.publish(TRIGGER_MODE_KEY, scope.get_trigger_mode)
101 self.controller.subscribe(TRIGGER_SLOPE_KEY, scope.set_trigger_slope)
102 self.controller.publish(TRIGGER_SLOPE_KEY, scope.get_trigger_slope)
103 self.controller.subscribe(TRIGGER_CHANNEL_KEY, scope.set_trigger_channel)
104 self.controller.publish(TRIGGER_CHANNEL_KEY, scope.get_trigger_channel)
107 for i in range(num_inputs):
110 ac_couple_block(self.controller, common.index_key(AC_COUPLE_KEY, i), ac_couple, SAMPLE_RATE_KEY),
114 for i in range(num_inputs):
115 c2f = gr.complex_to_float()
116 self.connect((self, i), c2f)
120 ac_couple_block(self.controller, common.index_key(AC_COUPLE_KEY, 2*i+j), ac_couple, SAMPLE_RATE_KEY),
125 common.input_watcher(msgq, self.controller, MSG_KEY)
127 self.win = scope_window.scope_window(
129 controller=self.controller,
132 frame_rate=frame_rate,
133 num_inputs=num_inputs,
134 sample_rate_key=SAMPLE_RATE_KEY,
138 ac_couple_key=AC_COUPLE_KEY,
139 trigger_level_key=TRIGGER_LEVEL_KEY,
140 trigger_mode_key=TRIGGER_MODE_KEY,
141 trigger_slope_key=TRIGGER_SLOPE_KEY,
142 trigger_channel_key=TRIGGER_CHANNEL_KEY,
143 decimation_key=DECIMATION_KEY,
146 common.register_access_methods(self, self.win)
148 class scope_sink_f(_scope_sink_base):
149 _item_size = gr.sizeof_float
152 class scope_sink_c(_scope_sink_base):
153 _item_size = gr.sizeof_gr_complex
156 # ----------------------------------------------------------------
157 # Stand-alone test application
158 # ----------------------------------------------------------------
161 from gnuradio.wxgui import stdgui2
163 class test_top_block (stdgui2.std_top_block):
164 def __init__(self, frame, panel, vbox, argv):
165 stdgui2.std_top_block.__init__ (self, frame, panel, vbox, argv)
168 frame_decim = int(argv[1])
173 v_scale = float(argv[2]) # start up at this v_scale value
175 v_scale = None # start up in autorange mode, default
178 t_scale = float(argv[3]) # start up at this t_scale value
180 t_scale = .00003 # old behavior
182 print "frame decim %s v_scale %s t_scale %s" % (frame_decim,v_scale,t_scale)
186 # Generate a complex sinusoid
187 self.src0 = gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 25.1e3, 1e3)
189 # We add this throttle block so that this demo doesn't suck down
190 # all the CPU available. You normally wouldn't use it...
191 self.thr = gr.throttle(gr.sizeof_gr_complex, input_rate)
193 scope = scope_sink_c (panel,"Secret Data",sample_rate=input_rate,
194 v_scale=v_scale, t_scale=t_scale)
195 vbox.Add (scope.win, 1, wx.EXPAND)
197 # Ultimately this will be
198 # self.connect("src0 throttle scope")
199 self.connect(self.src0, self.thr, scope)
202 app = stdgui2.stdapp (test_top_block, "O'Scope Test App")
205 if __name__ == '__main__':