diff options
Diffstat (limited to 'gr-wxgui/src/python/scopesink_gl.py')
| -rw-r--r-- | gr-wxgui/src/python/scopesink_gl.py | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/gr-wxgui/src/python/scopesink_gl.py b/gr-wxgui/src/python/scopesink_gl.py index 358361de6..ebf9b2939 100644 --- a/gr-wxgui/src/python/scopesink_gl.py +++ b/gr-wxgui/src/python/scopesink_gl.py @@ -1,5 +1,5 @@ # -# Copyright 2008 Free Software Foundation, Inc. +# Copyright 2008,2010 Free Software Foundation, Inc. # # This file is part of GNU Radio # @@ -27,6 +27,7 @@ import common from gnuradio import gr from pubsub import pubsub from constants import * +import math class ac_couple_block(gr.hier_block2): """ @@ -76,8 +77,17 @@ class _scope_sink_base(gr.hier_block2, common.wxgui_hb): ac_couple=False, num_inputs=1, frame_rate=scope_window.DEFAULT_FRAME_RATE, + use_persistence=False, + persist_alpha=None, **kwargs #do not end with a comma ): + #ensure analog alpha + if persist_alpha is None: + actual_frame_rate=float(frame_rate) + analog_cutoff_freq=0.5 # Hertz + #calculate alpha from wanted cutoff freq + persist_alpha = 1.0 - math.exp(-2.0*math.pi*analog_cutoff_freq/actual_frame_rate) + if not t_scale: t_scale = 10.0/sample_rate #init gr.hier_block2.__init__( @@ -129,6 +139,8 @@ class _scope_sink_base(gr.hier_block2, common.wxgui_hb): trigger_channel_key=TRIGGER_CHANNEL_KEY, decimation_key=DECIMATION_KEY, msg_key=MSG_KEY, + use_persistence=use_persistence, + persist_alpha=persist_alpha, ) common.register_access_methods(self, self.win) #connect @@ -169,10 +181,11 @@ class test_top_block (stdgui2.std_top_block): def __init__(self, frame, panel, vbox, argv): stdgui2.std_top_block.__init__ (self, frame, panel, vbox, argv) + default_input_rate = 1e6 if len(argv) > 1: - frame_decim = int(argv[1]) + input_rate = int(argv[1]) else: - frame_decim = 1 + input_rate = default_input_rate if len(argv) > 2: v_scale = float(argv[2]) # start up at this v_scale value @@ -182,14 +195,17 @@ class test_top_block (stdgui2.std_top_block): if len(argv) > 3: t_scale = float(argv[3]) # start up at this t_scale value else: - t_scale = .00003 # old behavior + t_scale = .00003*default_input_rate/input_rate # old behavior - print "frame decim %s v_scale %s t_scale %s" % (frame_decim,v_scale,t_scale) + print "input rate %s v_scale %s t_scale %s" % (input_rate,v_scale,t_scale) - input_rate = 1e6 # Generate a complex sinusoid - self.src0 = gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 25.1e3, 1e3) + ampl=1.0e3 + self.src0 = gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 25.1e3*input_rate/default_input_rate, ampl) + self.noise =gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 11.1*25.1e3*input_rate/default_input_rate, ampl/10) + #self.noise =gr.noise_source_c(gr.GR_GAUSSIAN, ampl/10) + self.combine=gr.add_cc() # We add this throttle block so that this demo doesn't suck down # all the CPU available. You normally wouldn't use it... @@ -201,7 +217,9 @@ class test_top_block (stdgui2.std_top_block): # Ultimately this will be # self.connect("src0 throttle scope") - self.connect(self.src0, self.thr, scope) + self.connect(self.src0,(self.combine,0)) + self.connect(self.noise,(self.combine,1)) + self.connect(self.combine, self.thr, scope) def main (): app = stdgui2.stdapp (test_top_block, "O'Scope Test App") |