On 11/02/2011 09:48 PM, Johnathan Corgan wrote:
On Wed, Nov 2, 2011 at 18:41, Marcus D. Leech <mle...@ripnet.com <mailto:mle...@ripnet.com>> wrote:OK, so here's a new attemp, with dynamic selection of taps for the FIR filter. It also appears to not work. Only filter taps that exist onAlso, I wonder whether it has anything to do with the fact that it's a gr_sync_block, and not a gr_sync_decimator. The FIR filters are all gr_sync_decimators, and perhaps the block executors treatment of them and their history setting is the main difference here.I don't think it matters. Grepping the tree to find out what code pays attention to d_history member in the block class turns up...very little aside from the initial block construction sequence (creating buffers, etc.)Johnathan
startup are working properly. Gulp. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
delay_test.grc
Description: application/gnuradio-grc
#!/usr/bin/env python ################################################## # Gnuradio Python Flow Graph # Title: Delay Test # Generated: Wed Nov 2 22:19:21 2011 ################################################## from gnuradio import eng_notation from gnuradio import gr from gnuradio.eng_option import eng_option from gnuradio.gr import firdes from gnuradio.wxgui import forms from gnuradio.wxgui import scopesink2 from grc_gnuradio import wxgui as grc_wxgui from optparse import OptionParser import wx class delay_test(grc_wxgui.top_block_gui): def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="Delay Test") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) ################################################## # Variables ################################################## self.taps4 = taps4 = [0.0,0.0,0.0,0.0,1.0] self.taps3 = taps3 = [0.0,0.0,0.0,1.0] self.taps2 = taps2 = [0.0,0.0,1.0] self.taps1 = taps1 = [0.0,1.0] self.taps0 = taps0 = [1.0] self.tapsarray = tapsarray = [taps0,taps1,taps2,taps3,taps4] self.delay = delay = 0 self.taps = taps = tapsarray[delay] self.samp_rate = samp_rate = 200e3 ################################################## # Blocks ################################################## self.wxgui_scopesink2_0 = scopesink2.scope_sink_f( self.GetWin(), title="Scope Plot", sample_rate=samp_rate, v_scale=0, v_offset=0, t_scale=0, ac_couple=False, xy_mode=False, num_inputs=2, trig_mode=gr.gr_TRIG_MODE_AUTO, y_axis_label="Counts", ) self.Add(self.wxgui_scopesink2_0.win) self.gr_throttle_0 = gr.throttle(gr.sizeof_float*1, samp_rate) self.gr_sig_source_x_0 = gr.sig_source_f(samp_rate, gr.GR_COS_WAVE, 25000, 1, 0) self.gr_fir_filter_xxx_0 = gr.fir_filter_fff(1, (taps)) self._delay_chooser = forms.radio_buttons( parent=self.GetWin(), value=self.delay, callback=self.set_delay, label="Delay", choices=[0, 1, 2, 3, 4], labels=[], style=wx.RA_HORIZONTAL, ) self.Add(self._delay_chooser) ################################################## # Connections ################################################## self.connect((self.gr_sig_source_x_0, 0), (self.gr_throttle_0, 0)) self.connect((self.gr_throttle_0, 0), (self.wxgui_scopesink2_0, 1)) self.connect((self.gr_throttle_0, 0), (self.gr_fir_filter_xxx_0, 0)) self.connect((self.gr_fir_filter_xxx_0, 0), (self.wxgui_scopesink2_0, 0)) def get_taps4(self): return self.taps4 def set_taps4(self, taps4): self.taps4 = taps4 self.set_tapsarray([self.taps0,self.taps1,self.taps2,self.taps3,self.taps4]) def get_taps3(self): return self.taps3 def set_taps3(self, taps3): self.taps3 = taps3 self.set_tapsarray([self.taps0,self.taps1,self.taps2,self.taps3,self.taps4]) def get_taps2(self): return self.taps2 def set_taps2(self, taps2): self.taps2 = taps2 self.set_tapsarray([self.taps0,self.taps1,self.taps2,self.taps3,self.taps4]) def get_taps1(self): return self.taps1 def set_taps1(self, taps1): self.taps1 = taps1 self.set_tapsarray([self.taps0,self.taps1,self.taps2,self.taps3,self.taps4]) def get_taps0(self): return self.taps0 def set_taps0(self, taps0): self.taps0 = taps0 self.set_tapsarray([self.taps0,self.taps1,self.taps2,self.taps3,self.taps4]) def get_tapsarray(self): return self.tapsarray def set_tapsarray(self, tapsarray): self.tapsarray = tapsarray self.set_taps(self.tapsarray[self.delay]) def get_delay(self): return self.delay def set_delay(self, delay): self.delay = delay self.set_taps(self.tapsarray[self.delay]) self._delay_chooser.set_value(self.delay) def get_taps(self): return self.taps def set_taps(self, taps): self.taps = taps self.gr_fir_filter_xxx_0.set_taps((self.taps)) def get_samp_rate(self): return self.samp_rate def set_samp_rate(self, samp_rate): self.samp_rate = samp_rate self.gr_sig_source_x_0.set_sampling_freq(self.samp_rate) self.wxgui_scopesink2_0.set_sample_rate(self.samp_rate) if __name__ == '__main__': parser = OptionParser(option_class=eng_option, usage="%prog: [options]") (options, args) = parser.parse_args() tb = delay_test() tb.Run(True)
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