#!/usr/bin/env python # # Copyright 2003,2004,2005,2006 Free Software Foundation, Inc. # # This file is part of GNU Radio # # GNU Radio is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 3, or (at your option) # any later version. # # GNU Radio is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with GNU Radio; see the file COPYING. If not, write to # the Free Software Foundation, Inc., 51 Franklin Street, # Boston, MA 02110-1301, USA. # # Originally created by Frank of radiorausch (http://sites.google.com/site/radiorausch/USRPFastAutocorrelation.html) # Upgraded for blks2 compatibility by Balint Seeber (http://wiki.spench.net/wiki/Fast_Auto-correlation) #from gnuradio import gr, gru, window, blocks, fft, filter from gnuradio import gr, gru, blocks, fft, filter # +kai for gnuradio 3.7 from gnuradio.wxgui import stdgui2, common import wx import gnuradio.wxgui.plot as plot #import Numeric import numpy import threading import math default_facsink_size = (640,240) default_fac_rate = gr.prefs().get_long('wxgui', 'fac_rate', 10) # was 15, 3 class fac_sink_base(gr.hier_block2, common.wxgui_hb): def __init__(self, input_is_real=False, baseband_freq=0, y_per_div=10, ref_level=50, sample_rate=1, fac_size=512, fac_rate=default_fac_rate, average=False, avg_alpha=None, title='', peak_hold=False): self._item_size = gr.sizeof_gr_complex if input_is_real: self._item_size = gr.sizeof_float gr.hier_block2.__init__( self, "Fast AutoCorrelation", gr.io_signature(1, 1, self._item_size), gr.io_signature(0, 0, 0), ) # initialize common attributes self.baseband_freq = baseband_freq self.y_divs = 8 self.y_per_div=y_per_div self.ref_level = ref_level self.sample_rate = sample_rate self.fac_size = fac_size self.fac_rate = fac_rate self.average = average if (avg_alpha is None) or (avg_alpha <= 0): self.avg_alpha = 0.20 / fac_rate # averaging needed to be slowed down for very slow rates else: self.avg_alpha = avg_alpha self.title = title self.peak_hold = peak_hold self.input_is_real = input_is_real self.msgq = gr.msg_queue(2) # queue that holds a maximum of 2 messages def set_y_per_div(self, y_per_div): self.y_per_div = y_per_div def set_ref_level(self, ref_level): self.ref_level = ref_level def set_average(self, average): self.average = average if average: self.avg.set_taps(self.avg_alpha) self.set_peak_hold(False) else: self.avg.set_taps(1.0) def set_peak_hold(self, enable): self.peak_hold = enable if enable: self.set_average(False) self.win.set_peak_hold(enable) def set_avg_alpha(self, avg_alpha): self.avg_alpha = avg_alpha def set_baseband_freq(self, baseband_freq): self.baseband_freq = baseband_freq def set_sample_rate(self, sample_rate): self.sample_rate = sample_rate self._set_n() def _set_n(self): self.one_in_n.set_n(max(1, int(self.sample_rate/self.fac_size/self.fac_rate))) class fac_sink_f(fac_sink_base): def __init__(self, parent, baseband_freq=0, y_per_div=10, ref_level=50, sample_rate=1, fac_size=512, fac_rate=default_fac_rate, average=False, avg_alpha=None, title='', size=default_facsink_size, peak_hold=False): fac_sink_base.__init__(self, input_is_real=True, baseband_freq=baseband_freq, y_per_div=y_per_div, ref_level=ref_level, sample_rate=sample_rate, fac_size=fac_size, fac_rate=fac_rate, average=average, avg_alpha=avg_alpha, title=title, peak_hold=peak_hold) s2p = blocks.stream_to_vector(gr.sizeof_float, self.fac_size) self.one_in_n = blocks.keep_one_in_n(gr.sizeof_float * self.fac_size, max(1, int(self.sample_rate/self.fac_size/self.fac_rate))) # windowing removed... #fac = gr.fft_vfc(self.fac_size, True, ()) fac = fft.fft_vfc(self.fac_size, True, ()) c2mag = blocks.complex_to_mag(self.fac_size) self.avg = filter.single_pole_iir_filter_ff_make(1.0, self.fac_size) fac_fac = fft.fft_vfc(self.fac_size, True, ()) fac_c2mag = blocks.complex_to_mag_make(fac_size) # FIXME We need to add 3dB to all bins but the DC bin log = blocks.nlog10_ff_make(20, self.fac_size, -20*math.log10(self.fac_size) ) sink = blocks.message_sink(gr.sizeof_float * self.fac_size, self.msgq, True) self.connect(s2p, self.one_in_n, fac, c2mag, fac_fac, fac_c2mag, self.avg, log, sink) # gr.hier_block.__init__(self, fg, s2p, sink) self.win = fac_window(self, parent, size=size) self.set_average(self.average) self.wxgui_connect(self, s2p) class fac_sink_c(fac_sink_base): def __init__(self, parent, baseband_freq=0, y_per_div=10, ref_level=50, sample_rate=1, fac_size=512, fac_rate=default_fac_rate, average=False, avg_alpha=None, title='', size=default_facsink_size, peak_hold=False): fac_sink_base.__init__(self, input_is_real=False, baseband_freq=baseband_freq, y_per_div=y_per_div, ref_level=ref_level, sample_rate=sample_rate, fac_size=fac_size, fac_rate=fac_rate, average=average, avg_alpha=avg_alpha, title=title, peak_hold=peak_hold) s2p = blocks.stream_to_vector(gr.sizeof_gr_complex, self.fac_size) self.one_in_n = blocks.keep_one_in_n(gr.sizeof_gr_complex * self.fac_size, max(1, int(self.sample_rate/self.fac_size/self.fac_rate))) # windowing removed ... fac = fft.fft_vcc(self.fac_size, True, ()) c2mag = blocks.complex_to_mag_make(fac_size) # Things go off into the weeds if we try for an inverse FFT so a forward FFT will have to do... fac_fac = fft.fft_vfc(self.fac_size, True, ()) fac_c2mag = blocks.complex_to_mag_make(fac_size) self.avg = filter.single_pole_iir_filter_ff_make(1.0, fac_size) log = blocks.nlog10_ff_make(20, self.fac_size, -20*math.log10(self.fac_size) ) # - 20*math.log10(norm) ) # - self.avg[0] ) sink = blocks.message_sink_make(gr.sizeof_float * fac_size, self.msgq, True) self.connect(s2p, self.one_in_n, fac, c2mag, fac_fac, fac_c2mag, self.avg, log, sink) # gr.hier_block2.__init__(self, fg, s2p, sink) self.win = fac_window(self, parent, size=size) self.set_average(self.average) self.wxgui_connect(self, s2p) # ------------------------------------------------------------------------ myDATA_EVENT = wx.NewEventType() EVT_DATA_EVENT = wx.PyEventBinder (myDATA_EVENT, 0) class DataEvent(wx.PyEvent): def __init__(self, data): wx.PyEvent.__init__(self) self.SetEventType (myDATA_EVENT) self.data = data def Clone (self): self.__class__ (self.GetId()) class input_watcher (threading.Thread): def __init__ (self, msgq, fac_size, event_receiver, **kwds): threading.Thread.__init__ (self, **kwds) self.setDaemon (1) self.msgq = msgq self.fac_size = fac_size self.event_receiver = event_receiver self.keep_running = True self.start () def run (self): while (self.keep_running): msg = self.msgq.delete_head() # blocking read of message queue itemsize = int(msg.arg1()) nitems = int(msg.arg2()) s = msg.to_string() # get the body of the msg as a string # There may be more than one fac frame in the message. # If so, we take only the last one if nitems > 1: start = itemsize * (nitems - 1) s = s[start:start+itemsize] complex_data = numpy.fromstring (s, numpy.float32) de = DataEvent (complex_data) wx.PostEvent (self.event_receiver, de) del de class fac_window (plot.PlotCanvas): def __init__ (self, facsink, parent, id = -1, pos = wx.DefaultPosition, size = wx.DefaultSize, style = wx.DEFAULT_FRAME_STYLE, name = ""): plot.PlotCanvas.__init__ (self, parent, id, pos, size, style, name) self.y_range = None self.facsink = facsink self.peak_hold = False self.peak_vals = None self.SetEnableGrid (True) #self.SetEnableZoom (True) #self.SetBackgroundColour ('black') self.build_popup_menu() EVT_DATA_EVENT (self, self.set_data) wx.EVT_CLOSE (self, self.on_close_window) self.Bind(wx.EVT_RIGHT_UP, self.on_right_click) self.input_watcher = input_watcher(facsink.msgq, facsink.fac_size, self) #mouse wheel event def on_mouse_wheel(event): if event.GetWheelRotation() < 0: self.on_incr_ref_level(event) else: self.on_decr_ref_level(event) self.Bind(wx.EVT_MOUSEWHEEL, on_mouse_wheel) def on_close_window (self, event): print "fac_window:on_close_window" self.keep_running = False def set_data (self, evt): dB = evt.data L = len (dB) if self.peak_hold: if self.peak_vals is None: self.peak_vals = dB else: self.peak_vals = numpy.maximum(dB, self.peak_vals) dB = self.peak_vals x = max(abs(self.facsink.sample_rate), abs(self.facsink.baseband_freq)) sf = 1000.0 units = "ms" x_vals = ((numpy.arange (L/2) * ( (sf / self.facsink.sample_rate ) )) ) points = numpy.zeros((len(x_vals), 2), numpy.float64) points[:,0] = x_vals points[:,1] = dB[0:L/2] lines = plot.PolyLine (points, colour='green') # DARKRED graphics = plot.PlotGraphics ([lines], title=self.facsink.title, xLabel = units, yLabel = "dB") self.Draw (graphics, xAxis=None, yAxis=self.y_range) self.update_y_range () def set_peak_hold(self, enable): self.peak_hold = enable self.peak_vals = None def update_y_range (self): ymax = self.facsink.ref_level ymin = self.facsink.ref_level - self.facsink.y_per_div * self.facsink.y_divs self.y_range = self._axisInterval ('min', ymin, ymax) def on_average(self, evt): # print "on_average" self.facsink.set_average(evt.IsChecked()) def on_peak_hold(self, evt): # print "on_peak_hold" self.facsink.set_peak_hold(evt.IsChecked()) def on_incr_ref_level(self, evt): # print "on_incr_ref_level" self.facsink.set_ref_level(self.facsink.ref_level + self.facsink.y_per_div) def on_decr_ref_level(self, evt): # print "on_decr_ref_level" self.facsink.set_ref_level(self.facsink.ref_level - self.facsink.y_per_div) def on_incr_y_per_div(self, evt): # print "on_incr_y_per_div" self.facsink.set_y_per_div(next_up(self.facsink.y_per_div, (1,2,5,10,20))) def on_decr_y_per_div(self, evt): # print "on_decr_y_per_div" self.facsink.set_y_per_div(next_down(self.facsink.y_per_div, (1,2,5,10,20))) def on_y_per_div(self, evt): # print "on_y_per_div" Id = evt.GetId() if Id == self.id_y_per_div_1: self.facsink.set_y_per_div(1) elif Id == self.id_y_per_div_2: self.facsink.set_y_per_div(2) elif Id == self.id_y_per_div_5: self.facsink.set_y_per_div(5) elif Id == self.id_y_per_div_10: self.facsink.set_y_per_div(10) elif Id == self.id_y_per_div_20: self.facsink.set_y_per_div(20) def on_right_click(self, event): menu = self.popup_menu for id, pred in self.checkmarks.items(): item = menu.FindItemById(id) item.Check(pred()) self.PopupMenu(menu, event.GetPosition()) def build_popup_menu(self): self.id_incr_ref_level = wx.NewId() self.id_decr_ref_level = wx.NewId() self.id_incr_y_per_div = wx.NewId() self.id_decr_y_per_div = wx.NewId() self.id_y_per_div_1 = wx.NewId() self.id_y_per_div_2 = wx.NewId() self.id_y_per_div_5 = wx.NewId() self.id_y_per_div_10 = wx.NewId() self.id_y_per_div_20 = wx.NewId() self.id_average = wx.NewId() self.id_peak_hold = wx.NewId() self.Bind(wx.EVT_MENU, self.on_average, id=self.id_average) self.Bind(wx.EVT_MENU, self.on_peak_hold, id=self.id_peak_hold) self.Bind(wx.EVT_MENU, self.on_incr_ref_level, id=self.id_incr_ref_level) self.Bind(wx.EVT_MENU, self.on_decr_ref_level, id=self.id_decr_ref_level) self.Bind(wx.EVT_MENU, self.on_incr_y_per_div, id=self.id_incr_y_per_div) self.Bind(wx.EVT_MENU, self.on_decr_y_per_div, id=self.id_decr_y_per_div) self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_1) self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_2) self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_5) self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_10) self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_20) # make a menu menu = wx.Menu() self.popup_menu = menu menu.AppendCheckItem(self.id_average, "Average") menu.AppendCheckItem(self.id_peak_hold, "Peak Hold") menu.Append(self.id_incr_ref_level, "Incr Ref Level") menu.Append(self.id_decr_ref_level, "Decr Ref Level") # menu.Append(self.id_incr_y_per_div, "Incr dB/div") # menu.Append(self.id_decr_y_per_div, "Decr dB/div") menu.AppendSeparator() # we'd use RadioItems for these, but they're not supported on Mac menu.AppendCheckItem(self.id_y_per_div_1, "1 dB/div") menu.AppendCheckItem(self.id_y_per_div_2, "2 dB/div") menu.AppendCheckItem(self.id_y_per_div_5, "5 dB/div") menu.AppendCheckItem(self.id_y_per_div_10, "10 dB/div") menu.AppendCheckItem(self.id_y_per_div_20, "20 dB/div") self.checkmarks = { self.id_average : lambda : self.facsink.average, self.id_peak_hold : lambda : self.facsink.peak_hold, self.id_y_per_div_1 : lambda : self.facsink.y_per_div == 1, self.id_y_per_div_2 : lambda : self.facsink.y_per_div == 2, self.id_y_per_div_5 : lambda : self.facsink.y_per_div == 5, self.id_y_per_div_10 : lambda : self.facsink.y_per_div == 10, self.id_y_per_div_20 : lambda : self.facsink.y_per_div == 20, } def next_up(v, seq): """ Return the first item in seq that is > v. """ for s in seq: if s > v: return s return v def next_down(v, seq): """ Return the last item in seq that is < v. """ rseq = list(seq[:]) rseq.reverse() for s in rseq: if s < v: return s return v # ---------------------------------------------------------------- # Deprecated interfaces # ---------------------------------------------------------------- # returns (block, win). # block requires a single input stream of float # win is a subclass of wxWindow def make_fac_sink_f(parent, title, fac_size, input_rate, ymin = 0, ymax=50): block = fac_sink_f(parent, title=title, fac_size=fac_size, sample_rate=input_rate, y_per_div=(ymax - ymin)/8, ref_level=ymax) return (block, block.win) # returns (block, win). # block requires a single input stream of gr_complex # win is a subclass of wxWindow def make_fac_sink_c(parent, title, fac_size, input_rate, ymin=0, ymax=50): block = fac_sink_c(parent, title=title, fac_size=fac_size, sample_rate=input_rate, y_per_div=(ymax - ymin)/8, ref_level=ymax) return (block, block.win) # ---------------------------------------------------------------- # Standalone test app # ---------------------------------------------------------------- class test_app_flow_graph (stdgui2.std_top_block): def __init__(self, frame, panel, vbox, argv): stdgui2.std_top_block .__init__ (self, frame, panel, vbox, argv) fac_size = 256 # build our flow graph input_rate = 20.48e3 # Generate a complex sinusoid #src1 = gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 2e3, 1) src1 = gr.sig_source_c (input_rate, gr.GR_CONST_WAVE, 5.75e3, 1) # We add these throttle blocks so that this demo doesn't # suck down all the CPU available. Normally you wouldn't use these. thr1 = gr.throttle(gr.sizeof_gr_complex, input_rate) sink1 = fac_sink_c (panel, title="Complex Data", fac_size=fac_size, sample_rate=input_rate, baseband_freq=100e3, ref_level=0, y_per_div=20) vbox.Add (sink1.win, 1, wx.EXPAND) self.connect (src1, thr1, sink1) #src2 = gr.sig_source_f (input_rate, gr.GR_SIN_WAVE, 2e3, 1) src2 = gr.sig_source_f (input_rate, gr.GR_CONST_WAVE, 5.75e3, 1) thr2 = gr.throttle(gr.sizeof_float, input_rate) sink2 = fac_sink_f (panel, title="Real Data", fac_size=fac_size*2, sample_rate=input_rate, baseband_freq=100e3, ref_level=0, y_per_div=20) vbox.Add (sink2.win, 1, wx.EXPAND) self.connect (src2, thr2, sink2) def main (): app = stdgui2.stdapp (test_app_flow_graph, "fac Sink Test App") app.MainLoop () if __name__ == '__main__': main ()