def setup_flowgraph(self, mode, ber_skipbytes=0): # parameters self.dp.set_mode(mode) self.rp.set_mode(mode) self.vlen = self.dp.num_carriers/4 self.ber_skipbytes = ber_skipbytes # trigger signals frame_trigger = [1]+[0]*(self.dp.symbols_per_frame-2) self.frame_start = frame_trigger*(len(self.random_bytes)/(self.vlen*(self.dp.symbols_per_frame-1)))+frame_trigger[0:(len(self.random_bytes)/self.vlen)%(self.dp.symbols_per_frame-1)] # sources/sinks self.source = gr.vector_source_b(self.random_bytes, False) self.trig = gr.vector_source_b(self.frame_start, False) if self.ber_sink: self.sink = dab.blocks.measure_ber_b() else: self.sink = gr.vector_sink_b() self.trig_sink = gr.null_sink(gr.sizeof_char) # self.noise_start = gr.noise_source_c(gr.GR_GAUSSIAN, math.sqrt(2), random.randint(0,10000)) # self.noise_start_head = gr.head(gr.sizeof_gr_complex, NOISE_SAMPLES_AT_START) # self.noise_end = gr.noise_source_c(gr.GR_GAUSSIAN, math.sqrt(2), random.randint(0,10000)) # self.noise_end_head = gr.head(gr.sizeof_gr_complex, NOISE_SAMPLES_AT_END) # blocks self.s2v = gr.stream_to_vector(gr.sizeof_char, self.vlen) self.v2s = gr.vector_to_stream(gr.sizeof_char, self.vlen) if self.ber_sink: self.ber_skipbytes0 = gr.skiphead(gr.sizeof_char, self.ber_skipbytes) self.ber_skipbytes1 = gr.skiphead(gr.sizeof_char, self.ber_skipbytes+self.dp.bytes_per_frame) # more blocks (they have state, so better reinitialise them) self.mod = dab.ofdm_mod(self.dp, debug = False) self.rescale = gr.multiply_const_cc(1) self.amp = gr.multiply_const_cc(1) self.channel = blks2.channel_model(noise_voltage=0, noise_seed=random.randint(0,10000)) # self.cat = dab.concatenate_signals(gr.sizeof_gr_complex) self.demod = dab.ofdm_demod(self.dp, self.rp, debug = False, verbose = True) # connect it all if self.ber_sink: self.connect(self.source, self.s2v, (self.mod,0), self.rescale, self.amp, self.channel, (self.demod,0), self.v2s, self.ber_skipbytes0, self.sink) self.connect(self.source, self.ber_skipbytes1, (self.sink,1)) else: self.connect(self.source, self.s2v, (self.mod,0), self.rescale, self.amp, self.channel, (self.demod,0), self.v2s, self.sink) self.connect(self.trig, (self.mod,1)) self.connect((self.demod, 1), self.trig_sink) # SNR calculation and prober self.probe_signal = gr.probe_avg_mag_sqrd_c(0,0.00001) self.probe_total = gr.probe_avg_mag_sqrd_c(0,0.00001) self.connect(self.amp, self.probe_signal) self.connect(self.channel, self.probe_total)
def __init__(self, rx_callback, options): gr.hier_block2.__init__( self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(0, 0, 0) ) options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._log = options.log self._rx_callback = rx_callback # this callback is fired when there's a packet available coder = None if options.rs_n and options.rs_k: if module_exists("reedsolomon"): print "INIT REED SOLOMON WITH " + str(options.rs_n) + "/" + str(options.rs_k) import reedsolomon coder = reedsolomon.Codec(options.rs_n, options.rs_k) # receiver self.ofdm_rx = ofdm_demod(options, callback=self._rx_callback, coder=coder) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh, alpha) self.connect(self, self.ofdm_rx) self.connect(self.ofdm_rx, self.probe) # Display some information about the setup if self._verbose: self._print_verbage()
def __init__(self, rx_callback, fwd_callback, options): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(0, 0, 0)) options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._log = options.log self._rx_callback = rx_callback # this callback is fired when there's a packet available self.fwd_callback = fwd_callback # receiver self.ofdm_rx = digital.ofdm_demod(options, callback=self._rx_callback, fwd_callback = self.fwd_callback) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha) self.connect(self, self.ofdm_rx) self.connect(self.ofdm_rx, self.probe) # Display some information about the setup if self._verbose: self._print_verbage()
def __init__(self,options): grc_wxgui.top_block_gui.__init__(self, title="Top Block") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) #CHANGE ME self.cog_phy_0=phy.cog_phy(options.args) # dest_addt,source_addr,max_attempts,time_out #self.probe_0=probe.probe(0,1) self.probe_0=gr.probe_avg_mag_sqrd_c(-30) #self.ss_chain_0=spectrum_sense.pwrfft_c(200e3,1024,25,) self.mac_0=csma.csma_mac(options.dest_addr,options.source_addr,options.max_attempts,options.time_out,0.05,0.0001,10000,self.probe_0,1e-6) self.wake_up=heart_beat.heart_beat("check","wake_up",0.001) #CHANGE ME print options.input_file self.gr_file_source_0 = gr.file_source(gr.sizeof_char*1,options.input_file, True) #CHANGE ME self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char*1, options.output_file) self.gr_file_sink_0.set_unbuffered(True) self.extras_stream_to_datagram_0 = grextras.Stream2Datagram(1, options.pkt_size) self.extras_datagram_to_stream_0 = grextras.Datagram2Stream(1) self.wxgui_fftsink2_0 = fftsink2.fft_sink_c( self.GetWin(), baseband_freq=990e6, y_per_div=10, y_divs=10, ref_level=0, ref_scale=2.0, sample_rate=1e6, fft_size=1024, fft_rate=15, average=False, avg_alpha=None, title="FFT Plot of source usrp", peak_hold=True, ) #self.Add(self.wxgui_fftsink2_0.win) #self.tags_d_0=tags_demo.tags_demo() #self.extras_stream_to_datagram_1 = grextras.Stream2Datagram(1, 256) #self.extras_datagram_to_stream_1 = grextras.Datagram2Stream(1) ################################################## # Connections ################################################## self.connect((self.gr_file_source_0, 0), (self.extras_stream_to_datagram_0, 0)) self.connect((self.extras_stream_to_datagram_0,0),(self.mac_0,1)) self.connect((self.cog_phy_0,0),(self.mac_0,0)) self.connect((self.mac_0,0),(self.cog_phy_0,0)) self.connect((self.mac_0,1),(self.extras_datagram_to_stream_0,0)) self.connect((self.extras_datagram_to_stream_0,0),(self.gr_file_sink_0,0)) #self.connect((self.cog_phy_0,1),(self.wxgui_fftsink2_0,0)) self.connect((self.wake_up,0),(self.mac_0,2)) #self.connect((self.cog_phy_0,1),(self.mac_0,3)) self.connect((self.cog_phy_0,1),(self.probe_0,0)) """self.connect((self.gr_file_source_1, 0), (self.extras_stream_to_datagram_1, 0))
def __init__(self, rx_callback, options): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature gr.io_signature(0, 0, 0)) # Output signature options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._log = options.log self._rx_callback = rx_callback # this callback is fired when there's a packet available # receiver self.ofdm_rx = \ blks2.ofdm_demod(options, callback=self._rx_callback) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha) self.connect(self, self.ofdm_rx) self.connect(self.ofdm_rx, self.probe) # Display some information about the setup if self._verbose: self._print_verbage()
def __init__(self, demod_class, rx_callback, options): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(0, 0, 0)) options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._bitrate = options.bitrate # desired bit rate self._rx_callback = rx_callback # this callback is fired when a packet arrives self._demod_class = demod_class # the demodulator_class we're using self._chbw_factor = options.chbw_factor # channel filter bandwidth factor # Get demod_kwargs demod_kwargs = self._demod_class.extract_kwargs_from_options(options) # Build the demodulator self.demodulator = self._demod_class(**demod_kwargs) # Make sure the channel BW factor is between 1 and sps/2 # or the filter won't work. if(self._chbw_factor < 1.0 or self._chbw_factor > self.samples_per_symbol()/2): sys.stderr.write("Channel bandwidth factor ({0}) must be within the range [1.0, {1}].\n".format(self._chbw_factor, self.samples_per_symbol()/2)) sys.exit(1) # Design filter to get actual channel we want sw_decim = 1 chan_coeffs = gr.firdes.low_pass (1.0, # gain sw_decim * self.samples_per_symbol(), # sampling rate self._chbw_factor, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN) # filter type self.channel_filter = gr.fft_filter_ccc(sw_decim, chan_coeffs) # receiver self.packet_receiver = \ digital.demod_pkts(self.demodulator, access_code=None, callback=self._rx_callback, threshold=-1) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha) # Display some information about the setup if self._verbose: self._print_verbage() # connect block input to channel filter self.connect(self, self.channel_filter) # connect the channel input filter to the carrier power detector self.connect(self.channel_filter, self.probe) # connect channel filter to the packet receiver self.connect(self.channel_filter, self.packet_receiver)
def _setup_top_block(self): self.tb = gr.top_block() samp_rate = 96000 oversample = 10 center_freq = 868.280e6 # Radio receiver, initial downsampling args = str("nchan=1 rtl=%s,buffers=16,offset_tune=1" % self.device) osmosdr_source = osmosdr.source_c(args=args) osmosdr_source.set_sample_rate(samp_rate*oversample) osmosdr_source.set_center_freq(center_freq, 0) osmosdr_source.set_freq_corr(0, 0) osmosdr_source.set_gain_mode(1, 0) osmosdr_source.set_gain(0, 0) low_pass_filter = gr.fir_filter_ccf(oversample, firdes.low_pass(1, samp_rate*oversample, 90e3, 8e3, firdes.WIN_HAMMING, 6.76)) self.tb.connect((osmosdr_source, 0), (low_pass_filter, 0)) # Squelch self.noise_probe = gr.probe_avg_mag_sqrd_c(0, 1.0/samp_rate/1e2) self.squelch = gr.simple_squelch_cc(self.noise_level, 1) noise_probe_thread = threading.Thread(target=self._noise_probe_thread) noise_probe_thread.start() self.threads.append(noise_probe_thread) self.tb.connect((low_pass_filter, 0), (self.noise_probe, 0)) self.tb.connect((low_pass_filter, 0), (self.squelch, 0)) # FM demodulation quadrature_demod = gr.quadrature_demod_cf(1) self.tb.connect((self.squelch, 0), (quadrature_demod, 0)) # Binary slicing, transformation into capture-compatible format add_offset = gr.add_const_vff((-1e-3, )) binary_slicer = digital.binary_slicer_fb() char_to_float = gr.char_to_float(1, 1) multiply_const = gr.multiply_const_vff((255, )) float_to_uchar = gr.float_to_uchar() pipe_sink = gr.file_sink(gr.sizeof_char*1, self.pipe) pipe_sink.set_unbuffered(False) self.tb.connect((quadrature_demod, 0), (add_offset, 0)) self.tb.connect((add_offset, 0), (binary_slicer, 0)) self.tb.connect((binary_slicer, 0), (char_to_float, 0)) self.tb.connect((char_to_float, 0), (multiply_const, 0)) self.tb.connect((multiply_const, 0), (float_to_uchar, 0)) self.tb.connect((float_to_uchar, 0), (pipe_sink, 0))
def __init__(self, demod_class, rx_callback, options): gr.hier_block2.__init__( self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature gr.io_signature(0, 0, 0)) # Output signature options = copy.copy( options) # make a copy so we can destructively modify self._verbose = options.verbose self._bitrate = options.bitrate # desired bit rate self._samples_per_symbol = options.samples_per_symbol # desired samples/symbol self._rx_callback = rx_callback # this callback is fired when there's a packet available self._demod_class = demod_class # the demodulator_class we're using # Get demod_kwargs demod_kwargs = self._demod_class.extract_kwargs_from_options(options) # Design filter to get actual channel we want sw_decim = 1 chan_coeffs = gr.firdes.low_pass( 1.0, # gain sw_decim * self._samples_per_symbol, # sampling rate 1.0, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN) # filter type self.channel_filter = gr.fft_filter_ccc(sw_decim, chan_coeffs) # receiver self.packet_receiver = \ blks2.demod_pkts(self._demod_class(**demod_kwargs), access_code=None, callback=self._rx_callback, threshold=-1) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh, alpha) # Display some information about the setup if self._verbose: self._print_verbage() # connect block input to channel filter self.connect(self, self.channel_filter) # connect the channel input filter to the carrier power detector self.connect(self.channel_filter, self.probe) # connect channel filter to the packet receiver self.connect(self.channel_filter, self.packet_receiver)
def __init__(self, demod_class, rx_callback, options): gr.hier_block2.__init__( self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature gr.io_signature(0, 0, 0), ) # Output signature options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._bitrate = options.bitrate # desired bit rate self._samples_per_symbol = options.samples_per_symbol # desired samples/symbol self._rx_callback = rx_callback # this callback is fired when there's a packet available self._demod_class = demod_class # the demodulator_class we're using # Get demod_kwargs demod_kwargs = self._demod_class.extract_kwargs_from_options(options) # Design filter to get actual channel we want sw_decim = 1 chan_coeffs = gr.firdes.low_pass( 1.0, # gain sw_decim * self._samples_per_symbol, # sampling rate 1.0, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN, ) # filter type self.channel_filter = gr.fft_filter_ccc(sw_decim, chan_coeffs) # receiver self.packet_receiver = blks22.demod_pkts( self._demod_class(**demod_kwargs), access_code=None, callback=self._rx_callback, threshold=-1 ) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh, alpha) # Display some information about the setup if self._verbose: self._print_verbage() # connect block input to channel filter self.connect(self, self.channel_filter) # connect the channel input filter to the carrier power detector self.connect(self.channel_filter, self.probe) # connect channel filter to the packet receiver self.connect(self.channel_filter, self.packet_receiver)
def __init__(self, principal_gui, rx_callback, options): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(0,0,0), # the 1,1 indicate the minimum, maximum stream in input gr.io_signature(0,0,0)) # the 0,0 indicate the minimum, maximum stream in output #local setup usrp source creat self.usrp source self._setup_usrp_source(options) options = copy.copy(options) # Make copy of the received options self._verbose = options.verbose self._bitrate = options.rate # The bit rate transmission self._samples_per_symbol= options.samples_per_symbol # samples/sample self._rx_callback = rx_callback #This callback is fired (declanche) when there's packet is available self.demodulator = bpsk_demodulator(principal_gui, options) #The demodulator used #Designe filter to get actual channel we want sw_decim = 1 #Create the low pass filter chan_coeffs = gr.firdes.low_pass (1.0, #gain sw_decim * self._samples_per_symbol, #sampling rate 1.0, #midpoint of trans band 0.5, #width of trans band gr.firdes.WIN_HAMMING) #filter type self.channel_filter = gr.fft_filter_ccc(sw_decim, chan_coeffs) self.packet_receiver = ieee_pkt_receiver.ieee_pkt_receiver_868_915(self, gui = principal_gui, demodulator = self.demodulator, callback = rx_callback, sps = self._samples_per_symbol, symbol_rate = self._bitrate, threshold = -1) #Carrier Sensing Block (ecoute du canal) alpha = 0.001 # Carrier Sensing with dB, will have to adjust thresh = 30 #construct analyser of carrier (c'est un sink) self.probe = gr.probe_avg_mag_sqrd_c(thresh, alpha) #display information about the setup if self._verbose: self._print_verbage() #self.squelch = gr.pwr_squelch_cc(50, 1, 0, True) #connect the input block to channel filter #connect the blocks with usrp, the self.usrp is created in _setup_usrp_source self.squelch = gr.pwr_squelch_cc(50, 1, 0, True) self.connect(self._usrp, self.packet_receiver)
def __init__(self): gr.top_block.__init__(self, "Magsquared") ################################################## # Variables ################################################## self.valdb = 0 self.variable_function_probe_0 = variable_function_probe_0 = 0 self.samp_rate = samp_rate = 125e3 self.gain = gain = 50 self.center_freq = center_freq = 925e6 s = socket.socket() ################################################## # Blocks ################################################## def listener(): while True: c, addr = s.accept() data = c.recv(1024) if (data == 'DataRequest'): c.send("RSS:{0}".format(self.valdb)) c.close() self.gr_probe_avg_mag_sqrd_x_0 = gr.probe_avg_mag_sqrd_c(0, 1e-3) def _variable_function_probe_0_probe(): s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) if len(sys.argv) == 3: host = sys.argv[1] port = int(sys.argv[2]) else: host = "localhost" port = 5006 s.bind((host, port)) s.listen(5) serverThread = threading.Thread(target=listener) serverThread.start() while True: val = self.gr_probe_avg_mag_sqrd_x_0.level() if (val > 0): self.valdb = 10 * math.log10(val) print self.valdb try: self.set_variable_function_probe_0(val) except AttributeError, e: pass time.sleep(1.0 / (7))
def __init__(self, options): grc_wxgui.top_block_gui.__init__(self, title="Top Block") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) #CHANGE ME self.cog_phy_0 = phy.cog_phy(options.args) self.probe_0 = gr.probe_avg_mag_sqrd_c(30, 0.001) # dest_addt,source_addr,max_attempts,time_out self.mac_0 = new_split_tx.split_demo(options.dest_addr, options.source_addr, options.time_out, options.lower_H, options.higher_H, self.probe_0, 1e-3) #self.mac_0=split.split_demo(options.dest_addr,options.source_addr,options.time_out,options.lower_H,options.higher_H,self.probe_0,1e-8) self.wake_up = heart_beat.heart_beat("check", "wake_up", 0.01) #CHANGE ME self.gr_file_source_0 = gr.file_source(gr.sizeof_char * 1, options.input_file, True) #CHANGE ME self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char * 1, options.output_file) self.gr_file_sink_0.set_unbuffered(True) self.extras_stream_to_datagram_0 = grextras.Stream2Datagram( 1, options.pkt_size) self.extras_datagram_to_stream_0 = grextras.Datagram2Stream(1) #self.tags_d_0=tags_demo.tags_demo() #self.extras_stream_to_datagram_1 = grextras.Stream2Datagram(1, 256) #self.extras_datagram_to_stream_1 = grextras.Datagram2Stream(1) ################################################## # Connections ################################################## self.connect((self.gr_file_source_0, 0), (self.extras_stream_to_datagram_0, 0)) self.connect((self.extras_stream_to_datagram_0, 0), (self.mac_0, 1)) self.connect((self.cog_phy_0, 0), (self.mac_0, 0)) self.connect((self.mac_0, 0), (self.cog_phy_0, 0)) self.connect((self.mac_0, 1), (self.extras_datagram_to_stream_0, 0)) self.connect((self.extras_datagram_to_stream_0, 0), (self.gr_file_sink_0, 0)) #self.connect((self.cog_phy_0,1),(self.wxgui_fftsink2_0,0)) self.connect((self.wake_up, 0), (self.mac_0, 2)) self.connect((self.cog_phy_0, 1), (self.probe_0, 0)) #self.connect((self.cog_phy_0,2),(self.wxgui_fftsink2_0,0)) #self.connect((self.cog_phy_0,1),(self.mac_0,3)) #self.connect((self.cog_phy_0,1),(self.tags_d_0,0)) """self.connect((self.gr_file_source_1, 0), (self.extras_stream_to_datagram_1, 0))
def __init__(self, options, need_padding=False): gr.hier_block2.__init__( self, "cs_mac", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(1, 1, gr.sizeof_gr_complex) ) # Create a logger self._logger = logging.getLogger("MAC(" + str(options.mac_address) + ")") # Extract options self._local_addr = options.mac_address self._need_padding = need_padding # Create queue for packets received from physical layer self._phy_rx_queue = Queue.Queue() # Create the ack_queue which the condition variable and thread use self.ack_queue = Queue.Queue() self.condition = threading.Condition() # Create physical layer implementation (modulator, demodulator) self._phy = cs434_hw4_phy.AVAILABLE[options.phy](options, lambda ok, payload: self._handle_recv(ok, payload)) # Received samples are redirected to two places. GNU Radio doesn't # currently let us attach 2 blocks to a hierarchical block input, so # we first copy, then split. rx_dup = gr.kludge_copy(gr.sizeof_gr_complex) self.connect(self, rx_dup) # Create and connect carrier-sensing block self._phy_rx_probe = gr.probe_avg_mag_sqrd_c(options.cs_threshold, 0.001) self.connect(rx_dup, self._phy_rx_probe) # Construct receive chain: received packets are delivered via callback from PHY self.connect(rx_dup, self._phy) # For certain settings, we may need to 'pad' our # transmissions with a 0-powered signal when we # aren't actively transmitting a packet if need_padding: import cs434_hw4 self._phy_tx_padder = cs434_hw4.channel_runner_cc() else: self._phy_tx_padder = gr.kludge_copy(gr.sizeof_gr_complex) # Construct transmit chain: packets are delivered to PHY via 'send_pkt()' method self._phy_tx_scale = gr.multiply_const_cc(options.tx_amplitude) self.connect(self._phy, self._phy_tx_scale, self._phy_tx_padder, self)
def __init__(self,options): grc_wxgui.top_block_gui.__init__(self, title="Top Block") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) #CHANGE ME self.cog_phy_0=phy.cog_phy(options.args) # dest_addt,source_addr,max_attempts,time_out self.probe_0=gr.probe_avg_mag_sqrd_c(30,0.001) self.mac_0=new_split_rcv.pilot_rcv(options.dest_addr,options.source_addr,self.probe_0,0.05) self.wake_up=heart_beat.heart_beat("check","wake_up",0.01) #CHANGE ME self.gr_file_source_0 = gr.file_source(gr.sizeof_char*1, options.input_file, True) #CHANGE ME self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char*1, options.output_file) self.gr_file_sink_0.set_unbuffered(True) self.extras_stream_to_datagram_0 = grextras.Stream2Datagram(1, options.pkt_size) self.extras_datagram_to_stream_0 = grextras.Datagram2Stream(1) #self.tags_d_0=tags_demo.tags_demo() #self.extras_stream_to_datagram_1 = grextras.Stream2Datagram(1, 256) #self.extras_datagram_to_stream_1 = grextras.Datagram2Stream(1) ################################################## # Connections ################################################## self.connect((self.gr_file_source_0, 0), (self.extras_stream_to_datagram_0, 0)) self.connect((self.extras_stream_to_datagram_0,0),(self.mac_0,1)) self.connect((self.cog_phy_0,0),(self.mac_0,0)) self.connect((self.mac_0,0),(self.cog_phy_0,0)) self.connect((self.mac_0,1),(self.extras_datagram_to_stream_0,0)) self.connect((self.extras_datagram_to_stream_0,0),(self.gr_file_sink_0,0)) #self.connect((self.cog_phy_0,1),(self.wxgui_fftsink2_0,0)) self.connect((self.wake_up,0),(self.mac_0,2)) self.connect((self.cog_phy_0,1),(self.probe_0,0)) #self.connect((self.cog_phy_0,2),(self.wxgui_fftsink2_0,0)) #self.connect((self.cog_phy_0,1),(self.mac_0,3)) #self.connect((self.cog_phy_0,1),(self.tags_d_0,0)) """self.connect((self.gr_file_source_1, 0), (self.extras_stream_to_datagram_1, 0))
def __init__(self, modulator_class, options): ''' See below for what options should hold ''' gr.hier_block2.__init__(self, "transmit_path", gr.io_signature(0,0,0), gr.io_signature(1,1,gr.sizeof_gr_complex)) options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._tx_amplitude = options.tx_amplitude # digital amplitude sent to USRP self._bitrate = options.bitrate # desired bit rate self._modulator_class = modulator_class # the modulator_class we are using # Get mod_kwargs mod_kwargs = self._modulator_class.extract_kwargs_from_options(options) # transmitter self.modulator = self._modulator_class(**mod_kwargs) self.packet_transmitter = \ digital.mod_pkts(self.modulator, access_code=None, msgq_limit=4, pad_for_usrp=True) self.amp = gr.multiply_const_cc(1) self.set_tx_amplitude(self._tx_amplitude) # Figure out how to calculate symbol_rate later symbol_rate = 5000000 # Hardcoding rx_freq and rx_gain self.source = uhd_receiver(options.args, symbol_rate, options.samples_per_symbol, options.tx_freq-1250000, 30, options.spec, options.antenna, options.verbose) options.samples_per_symbol = self.source._sps # Display some information about the setup if self._verbose: self._print_verbage() low_pass_taps = [ -0.0401, 0.0663, 0.0468, -0.0235, -0.0222, 0.0572, 0.0299, -0.1001, -0.0294, 0.3166, 0.5302, 0.3166, -0.0294, -0.1001, 0.0299, 0.0572, -0.0222, -0.0235, 0.0468, 0.0663, -0.0401] high_pass_taps = [ -0.0389, -0.0026, 0.0302, 0.0181, -0.0357, -0.0394, 0.0450, 0.0923, -0.0472, -0.3119, 0.5512, -0.3119, -0.0472, 0.0923, 0.0450, -0.0394, -0.0357, 0.0181, 0.0302, -0.0026, -0.0389] # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe_lp = gr.probe_avg_mag_sqrd_c(thresh,alpha) self.probe_hp = gr.probe_avg_mag_sqrd_c(thresh,alpha) self.lp = gr.fft_filter_ccc(65536, low_pass_taps) self.hp = gr.fft_filter_ccc(65536, high_pass_taps) self.connect(self.source, self.lp) self.connect(self.lp, self.probe_lp) self.connect(self.source, self.hp) self.connect(self.hp, self.probe_hp) # Connect components in the flowgraph self.connect(self.packet_transmitter, self.amp, self)
def __init__(self, demod_class, rx_callback, options): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(0, 0, 0), # Input signature gr.io_signature(0, 0, 0)) # Output signature options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._rx_freq = options.rx_freq # receiver's center frequency self._rx_gain = options.rx_gain # receiver's gain self._rx_subdev_spec = options.rx_subdev_spec # daughterboard to use self._bitrate = options.bitrate # desired bit rate self._decim = options.decim # Decimating rate for the USRP (prelim) self._samples_per_symbol = options.samples_per_symbol # desired samples/symbol self._fusb_block_size = options.fusb_block_size # usb info for USRP self._fusb_nblocks = options.fusb_nblocks # usb info for USRP self._rx_callback = rx_callback # this callback is fired when there's a packet available self._demod_class = demod_class # the demodulator_class we're using if self._rx_freq is None: sys.stderr.write("-f FREQ or --freq FREQ or --rx-freq FREQ must be specified\n") raise SystemExit # Set up USRP source; also adjusts decim, samples_per_symbol, and bitrate self._setup_usrp_source() g = self.subdev.gain_range() if options.show_rx_gain_range: print "Rx Gain Range: minimum = %g, maximum = %g, step size = %g" \ % (g[0], g[1], g[2]) self.set_gain(options.rx_gain) self.set_auto_tr(True) # enable Auto Transmit/Receive switching # Set RF frequency ok = self.set_freq(self._rx_freq) if not ok: print "Failed to set Rx frequency to %s" % (eng_notation.num_to_str(self._rx_freq)) raise ValueError, eng_notation.num_to_str(self._rx_freq) # copy the final answers back into options for use by demodulator options.samples_per_symbol = self._samples_per_symbol options.bitrate = self._bitrate options.decim = self._decim # Get demod_kwargs demod_kwargs = self._demod_class.extract_kwargs_from_options(options) # Design filter to get actual channel we want sw_decim = 1 chan_coeffs = gr.firdes.low_pass (1.0, # gain sw_decim * self._samples_per_symbol, # sampling rate 1.0, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN) # filter type # Decimating channel filter # complex in and out, float taps self.chan_filt = gr.fft_filter_ccc(sw_decim, chan_coeffs) #self.chan_filt = gr.fir_filter_ccf(sw_decim, chan_coeffs) # receiver self.packet_receiver = \ blks2.demod_pkts(self._demod_class(**demod_kwargs), access_code=None, callback=self._rx_callback, threshold=-1) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.sequelcher = gr.simple_squelch_cc(45) if options.log_rx_power == True: self.probe = gr.probe_avg_mag_sqrd_cf(thresh,alpha) self.power_sink = gr.file_sink(gr.sizeof_float, "rxpower.dat") self.connect(self.chan_filt, self.probe, self.power_sink) else: self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha) #self.connect(self.chan_filt, self.sequelcher, self.probe) # Display some information about the setup if self._verbose: self._print_verbage() #filter the noise and pass only the transmitted data #file_source = gr.file_source(gr.sizeof_gr_complex,"modulated_data.dat") #self.connect(self.chan_filt,file_sink) self.connect(self.u, self.chan_filt,self.sequelcher, self.packet_receiver)
def setup_flowgraph(self, mode, ber_skipbytes=0): # parameters self.dp.set_mode(mode) self.rp.set_mode(mode) self.vlen = self.dp.num_carriers / 4 self.ber_skipbytes = ber_skipbytes # trigger signals frame_trigger = [1] + [0] * (self.dp.symbols_per_frame - 2) self.frame_start = frame_trigger * ( len(self.random_bytes) / (self.vlen * (self.dp.symbols_per_frame - 1)) ) + frame_trigger[0:(len(self.random_bytes) / self.vlen) % (self.dp.symbols_per_frame - 1)] # sources/sinks self.source = gr.vector_source_b(self.random_bytes, False) self.trig = gr.vector_source_b(self.frame_start, False) if self.ber_sink: self.sink = grdab.blocks.measure_ber_b() else: self.sink = gr.vector_sink_b() # self.noise_start = gr.noise_source_c(gr.GR_GAUSSIAN, math.sqrt(2), random.randint(0,10000)) # self.noise_start_head = gr.head(gr.sizeof_gr_complex, NOISE_SAMPLES_AT_START) # self.noise_end = gr.noise_source_c(gr.GR_GAUSSIAN, math.sqrt(2), random.randint(0,10000)) # self.noise_end_head = gr.head(gr.sizeof_gr_complex, NOISE_SAMPLES_AT_END) # blocks self.s2v = gr.stream_to_vector(gr.sizeof_char, self.vlen) self.v2s = gr.vector_to_stream(gr.sizeof_char, self.vlen) if self.ber_sink: self.ber_skipbytes0 = gr.skiphead(gr.sizeof_char, self.ber_skipbytes) self.ber_skipbytes1 = gr.skiphead( gr.sizeof_char, self.ber_skipbytes + self.dp.bytes_per_frame) # more blocks (they have state, so better reinitialise them) self.mod = grdab.ofdm_mod(self.dp, debug=False) self.rescale = gr.multiply_const_cc(1) self.amp = gr.multiply_const_cc(1) self.channel = blks2.channel_model(noise_voltage=0, noise_seed=random.randint(0, 10000)) # self.cat = grdab.concatenate_signals(gr.sizeof_gr_complex) self.demod = grdab.ofdm_demod(self.dp, self.rp, debug=False, verbose=True) # connect it all if self.ber_sink: self.connect(self.source, self.s2v, (self.mod, 0), self.rescale, self.amp, self.channel, (self.demod, 0), self.v2s, self.ber_skipbytes0, self.sink) self.connect(self.source, self.ber_skipbytes1, (self.sink, 1)) else: self.connect(self.source, self.s2v, (self.mod, 0), self.rescale, self.amp, self.channel, (self.demod, 0), self.v2s, self.sink) self.connect(self.trig, (self.mod, 1)) # SNR calculation and prober self.probe_signal = gr.probe_avg_mag_sqrd_c(0, 0.00001) self.probe_total = gr.probe_avg_mag_sqrd_c(0, 0.00001) self.connect(self.amp, self.probe_signal) self.connect(self.channel, self.probe_total)
def __init__(self, options): gr.top_block.__init__(self) options = copy.copy(options) symbol_rate = 2500000 print "%f" % (options.tx_freq-1.25e6) #print "==========================================\n" #print "Samp per sym = %d\n" % options.samples_per_symbol #print "==========================================\n" self.source = uhd_receiver(options.args, symbol_rate, 1, #options.samples_per_symbol, options.tx_freq-1.25e6, 30, options.spec, options.antenna, options.verbose) low_pass_taps = [ -0.0401, 0.0663, 0.0468, -0.0235, -0.0222, 0.0572, 0.0299, -0.1001, -0.0294, 0.3166, 0.5302, 0.3166, -0.0294, -0.1001, 0.0299, 0.0572, -0.0222, -0.0235, 0.0468, 0.0663, -0.0401] high_pass_taps = [ -0.0389, -0.0026, 0.0302, 0.0181, -0.0357, -0.0394, 0.0450, 0.0923, -0.0472, -0.3119, 0.5512, -0.3119, -0.0472, 0.0923, 0.0450, -0.0394, -0.0357, 0.0181, 0.0302, -0.0026, -0.0389] # Carrier Sensing Blocks alpha = 0.5 thresh = 30 # in dB, will have to adjust self.probe_lp = gr.probe_avg_mag_sqrd_c(thresh,alpha) self.probe_hp = gr.probe_avg_mag_sqrd_c(thresh,alpha) self.lp = gr.fft_filter_ccc(32, low_pass_taps) self.hp = gr.fft_filter_ccc(32, high_pass_taps) self.connect(self.source, self.lp) self.connect(self.lp, self.probe_lp) self.connect(self.source, self.hp) self.connect(self.hp, self.probe_hp)
def __init__(self, demod_class, rx_callback, options, source_block): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(0, 0, 0)) options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._bitrate = options.bitrate # desired bit rate self._rx_callback = rx_callback # this callback is fired when a packet arrives self._demod_class = demod_class # the demodulator_class we're using self._chbw_factor = options.chbw_factor # channel filter bandwidth factor # Get demod_kwargs demod_kwargs = self._demod_class.extract_kwargs_from_options(options) #Give hooks of usrp to blocks downstream self.source_block = source_block ######################################### # Build Blocks ######################################### # Build the demodulator self.demodulator = self._demod_class(**demod_kwargs) # Make sure the channel BW factor is between 1 and sps/2 # or the filter won't work. if(self._chbw_factor < 1.0 or self._chbw_factor > self.samples_per_symbol()/2): sys.stderr.write("Channel bandwidth factor ({0}) must be within the range [1.0, {1}].\n".format(self._chbw_factor, self.samples_per_symbol()/2)) sys.exit(1) # Design filter to get actual channel we want sw_decim = 1 chan_coeffs = gr.firdes.low_pass (1.0, # gain sw_decim * self.samples_per_symbol(), # sampling rate self._chbw_factor, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN) # filter type self.channel_filter = gr.fft_filter_ccc(sw_decim, chan_coeffs) # receiver self.packet_receiver = \ digital.demod_pkts(self.demodulator, access_code=None, callback=self._rx_callback, threshold=-1) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha) # Display some information about the setup if self._verbose: self._print_verbage() # More Carrier Sensing with FFT #self.gr_vector_sink = gr.vector_sink_c(1024) #self.gr_stream_to_vector = gr.stream_to_vector(gr.sizeof_gr_complex*1, 1024) #self.gr_head = gr.head(gr.sizeof_gr_complex*1024, 1024) #self.fft = fft.fft_vcc(1024, True, (window.blackmanharris(1024)), True, 1) # Parameters usrp_rate = options.bitrate self.fft_size = 1024 self.min_freq = 2.4e9-0.75e6 self.max_freq = 2.4e9+0.75e6 self.tune_delay = 0.001 self.dwell_delay = 0.01 s2v = gr.stream_to_vector(gr.sizeof_gr_complex, self.fft_size) mywindow = window.blackmanharris(self.fft_size) fft = gr.fft_vcc(self.fft_size, True, mywindow) power = 0 for tap in mywindow: power += tap*tap c2mag = gr.complex_to_mag_squared(self.fft_size) # FIXME the log10 primitive is dog slow log = gr.nlog10_ff(10, self.fft_size, -20*math.log10(self.fft_size)-10*math.log10(power/self.fft_size)) # Set the freq_step to 75% of the actual data throughput. # This allows us to discard the bins on both ends of the spectrum. #self.freq_step = 0.75 * usrp_rate #self.min_center_freq = self.min_freq + self.freq_step/2 #nsteps = math.ceil((self.max_freq - self.min_freq) / self.freq_step) #self.max_center_freq = self.min_center_freq + (nsteps * self.freq_step) self.freq_step = 1.5e6 self.min_center_freq = self.min_freq nsteps = 1 self.max_center_freq = self.max_freq self.next_freq = self.min_center_freq tune_delay = max(0, int(round(self.tune_delay * usrp_rate / self.fft_size))) # in fft_frames dwell_delay = max(1, int(round(self.dwell_delay * usrp_rate / self.fft_size))) # in fft_frames self.msgq = gr.msg_queue(16) self._tune_callback = tune(self) # hang on to this to keep it from being GC'd stats = gr.bin_statistics_f(self.fft_size, self.msgq, self._tune_callback, tune_delay, dwell_delay) ###################################################### # Connect Blocks Together ###################################################### #channel-filter-->Probe_Avg_Mag_Sqrd # -->Packet_Receiver (Demod Done Here!!) # # connect FFT sampler to system #self.connect(self, self.gr_stream_to_vector, self.fft, self.gr_vector_sink) # connect block input to channel filter self.connect(self, self.channel_filter) # connect the channel input filter to the carrier power detector self.connect(self.channel_filter, self.probe) # connect channel filter to the packet receiver self.connect(self.channel_filter, self.packet_receiver) # FIXME leave out the log10 until we speed it up #self.connect(self.u, s2v, fft, c2mag, log, stats) self.connect(self.channel_filter, s2v, fft, c2mag, stats)
def __init__(self, devid="type=b100", rdsfile="rds_fifo", gain=35.0, freq=101.1e6, xmlport=13777, arate=int(48e3), mute=-15.0, ftune=0, ant="J1", subdev="A:0", ahw="pulse", deemph=75.0e-6, prenames='["UWRF","89.3","950","WEVR"]', prefreqs="[88.715e6,89.3e6,950.735e6,106.317e6]", volume=1.0): grc_wxgui.top_block_gui.__init__(self, title="Simple FM (Stereo) Receiver") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) ################################################## # Parameters ################################################## self.devid = devid self.rdsfile = rdsfile self.gain = gain self.freq = freq self.xmlport = xmlport self.arate = arate self.mute = mute self.ftune = ftune self.ant = ant self.subdev = subdev self.ahw = ahw self.deemph = deemph self.prenames = prenames self.prefreqs = prefreqs self.volume = volume ################################################## # Variables ################################################## self.pthresh = pthresh = 350 self.preselect = preselect = eval(prefreqs)[0] self.pilot_level = pilot_level = 0 self.ifreq = ifreq = freq self.stpilotdet = stpilotdet = True if (pilot_level > pthresh) else False self.stereo = stereo = True self.rf_pwr_lvl = rf_pwr_lvl = 0 self.cur_freq = cur_freq = simple_fm_helper.freq_select(ifreq,preselect) self.vol = vol = volume self.variable_static_text_0 = variable_static_text_0 = 10.0*math.log(rf_pwr_lvl+1.0e-11)/math.log(10) self.tone_med = tone_med = 5 self.tone_low = tone_low = 5 self.tone_high = tone_high = 5 self.stereo_0 = stereo_0 = stpilotdet self.st_enabled = st_enabled = 1 if (stereo == True and pilot_level > pthresh) else 0 self.squelch_probe = squelch_probe = 0 self.sq_thresh = sq_thresh = mute self.samp_rate = samp_rate = 250e3 self.rtext_0 = rtext_0 = cur_freq self.record = record = False self.rdsrate = rdsrate = 25e3 self.osmo_taps = osmo_taps = firdes.low_pass(1.0,1.00e6,95e3,20e3,firdes.WIN_HAMMING,6.76) self.mod_reset = mod_reset = 0 self.igain = igain = gain self.fine = fine = ftune self.farate = farate = arate self.dm = dm = deemph self.discrim_dc = discrim_dc = 0 self.capture_file = capture_file = "capture.wav" self.asrate = asrate = 125e3 ################################################## # Blocks ################################################## _sq_thresh_sizer = wx.BoxSizer(wx.VERTICAL) self._sq_thresh_text_box = forms.text_box( parent=self.GetWin(), sizer=_sq_thresh_sizer, value=self.sq_thresh, callback=self.set_sq_thresh, label="Mute Level", converter=forms.float_converter(), proportion=0, ) self._sq_thresh_slider = forms.slider( parent=self.GetWin(), sizer=_sq_thresh_sizer, value=self.sq_thresh, callback=self.set_sq_thresh, minimum=-30.0, maximum=-5.0, num_steps=40, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_sq_thresh_sizer, 1, 5, 1, 1) self.input_power = gr.probe_avg_mag_sqrd_c(sq_thresh, 1.0/(samp_rate/10)) self.dc_level = gr.probe_signal_f() _vol_sizer = wx.BoxSizer(wx.VERTICAL) self._vol_text_box = forms.text_box( parent=self.GetWin(), sizer=_vol_sizer, value=self.vol, callback=self.set_vol, label="Volume", converter=forms.float_converter(), proportion=0, ) self._vol_slider = forms.slider( parent=self.GetWin(), sizer=_vol_sizer, value=self.vol, callback=self.set_vol, minimum=0, maximum=11, num_steps=110, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_vol_sizer, 0, 3, 1, 1) _tone_med_sizer = wx.BoxSizer(wx.VERTICAL) self._tone_med_text_box = forms.text_box( parent=self.GetWin(), sizer=_tone_med_sizer, value=self.tone_med, callback=self.set_tone_med, label="1Khz-4Khz", converter=forms.float_converter(), proportion=0, ) self._tone_med_slider = forms.slider( parent=self.GetWin(), sizer=_tone_med_sizer, value=self.tone_med, callback=self.set_tone_med, minimum=0, maximum=10, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_tone_med_sizer, 1, 3, 1, 1) _tone_low_sizer = wx.BoxSizer(wx.VERTICAL) self._tone_low_text_box = forms.text_box( parent=self.GetWin(), sizer=_tone_low_sizer, value=self.tone_low, callback=self.set_tone_low, label="0-1Khz", converter=forms.float_converter(), proportion=0, ) self._tone_low_slider = forms.slider( parent=self.GetWin(), sizer=_tone_low_sizer, value=self.tone_low, callback=self.set_tone_low, minimum=0, maximum=10, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_tone_low_sizer, 1, 2, 1, 1) _tone_high_sizer = wx.BoxSizer(wx.VERTICAL) self._tone_high_text_box = forms.text_box( parent=self.GetWin(), sizer=_tone_high_sizer, value=self.tone_high, callback=self.set_tone_high, label="4Khz-15Khz", converter=forms.float_converter(), proportion=0, ) self._tone_high_slider = forms.slider( parent=self.GetWin(), sizer=_tone_high_sizer, value=self.tone_high, callback=self.set_tone_high, minimum=0, maximum=10, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_tone_high_sizer, 1, 4, 1, 1) def _squelch_probe_probe(): while True: val = self.input_power.unmuted() try: self.set_squelch_probe(val) except AttributeError, e: pass time.sleep(1.0/(10)) _squelch_probe_thread = threading.Thread(target=_squelch_probe_probe) _squelch_probe_thread.daemon = True _squelch_probe_thread.start() self._record_check_box = forms.check_box( parent=self.GetWin(), value=self.record, callback=self.set_record, label="Record Audio", true=True, false=False, ) self.GridAdd(self._record_check_box, 2, 2, 1, 1) self.pilot_probe = gr.probe_signal_f() _fine_sizer = wx.BoxSizer(wx.VERTICAL) self._fine_text_box = forms.text_box( parent=self.GetWin(), sizer=_fine_sizer, value=self.fine, callback=self.set_fine, label="Fine Tuning", converter=forms.float_converter(), proportion=0, ) self._fine_slider = forms.slider( parent=self.GetWin(), sizer=_fine_sizer, value=self.fine, callback=self.set_fine, minimum=-50.0e3, maximum=50.e03, num_steps=400, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_fine_sizer, 1, 0, 1, 1) def _discrim_dc_probe(): while True: val = self.dc_level.level() try: self.set_discrim_dc(val) except AttributeError, e: pass time.sleep(1.0/(2.5)) _discrim_dc_thread = threading.Thread(target=_discrim_dc_probe) _discrim_dc_thread.daemon = True _discrim_dc_thread.start() self._capture_file_text_box = forms.text_box( parent=self.GetWin(), value=self.capture_file, callback=self.set_capture_file, label="Record Filename", converter=forms.str_converter(), ) self.GridAdd(self._capture_file_text_box, 2, 0, 1, 2) self.Main = self.Main = wx.Notebook(self.GetWin(), style=wx.NB_TOP) self.Main.AddPage(grc_wxgui.Panel(self.Main), "L/R") self.Main.AddPage(grc_wxgui.Panel(self.Main), "FM Demod Spectrum") self.Add(self.Main) self.wxgui_waterfallsink2_0 = waterfallsink2.waterfall_sink_c( self.GetWin(), baseband_freq=0, dynamic_range=100, ref_level=0, ref_scale=2.0, sample_rate=samp_rate, fft_size=512, fft_rate=15, average=False, avg_alpha=None, title="Waterfall Plot", ) self.Add(self.wxgui_waterfallsink2_0.win) self.wxgui_scopesink2_0 = scopesink2.scope_sink_f( self.Main.GetPage(0).GetWin(), title="Audio Channels (L and R)", sample_rate=farate, 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="Rel. Audio Level", ) self.Main.GetPage(0).Add(self.wxgui_scopesink2_0.win) self.wxgui_fftsink2_0 = fftsink2.fft_sink_f( self.Main.GetPage(1).GetWin(), baseband_freq=0, y_per_div=10, y_divs=10, ref_level=0, ref_scale=2.0, sample_rate=asrate, fft_size=1024, fft_rate=6, average=True, avg_alpha=0.1, title="FM Demod Spectrum", peak_hold=False, ) self.Main.GetPage(1).Add(self.wxgui_fftsink2_0.win) self._variable_static_text_0_static_text = forms.static_text( parent=self.GetWin(), value=self.variable_static_text_0, callback=self.set_variable_static_text_0, label="RF Power ", converter=forms.float_converter(formatter=lambda x: "%4.1f" % x), ) self.GridAdd(self._variable_static_text_0_static_text, 0, 2, 1, 1) self._stereo_0_check_box = forms.check_box( parent=self.GetWin(), value=self.stereo_0, callback=self.set_stereo_0, label="Stereo Detect", true=True, false=False, ) self.GridAdd(self._stereo_0_check_box, 2, 5, 1, 1) self._stereo_check_box = forms.check_box( parent=self.GetWin(), value=self.stereo, callback=self.set_stereo, label="Stereo", true=True, false=False, ) self.GridAdd(self._stereo_check_box, 2, 4, 1, 1) self.rtl2832_source_0 = baz.rtl_source_c(defer_creation=True) self.rtl2832_source_0.set_verbose(True) self.rtl2832_source_0.set_vid(0x0) self.rtl2832_source_0.set_pid(0x0) self.rtl2832_source_0.set_tuner_name("") self.rtl2832_source_0.set_default_timeout(0) self.rtl2832_source_0.set_use_buffer(True) self.rtl2832_source_0.set_fir_coefficients(([])) if self.rtl2832_source_0.create() == False: raise Exception("Failed to create RTL2832 Source: rtl2832_source_0") self.rtl2832_source_0.set_sample_rate(1.0e6) self.rtl2832_source_0.set_frequency(cur_freq+200e3) self.rtl2832_source_0.set_auto_gain_mode(False) self.rtl2832_source_0.set_relative_gain(True) self.rtl2832_source_0.set_gain(gain) self._rtext_0_static_text = forms.static_text( parent=self.GetWin(), value=self.rtext_0, callback=self.set_rtext_0, label="CURRENT FREQUENCY>>", converter=forms.float_converter(), ) self.GridAdd(self._rtext_0_static_text, 0, 1, 1, 1) def _rf_pwr_lvl_probe(): while True: val = self.input_power.level() try: self.set_rf_pwr_lvl(val) except AttributeError, e: pass time.sleep(1.0/(2)) _rf_pwr_lvl_thread = threading.Thread(target=_rf_pwr_lvl_probe) _rf_pwr_lvl_thread.daemon = True _rf_pwr_lvl_thread.start() self._preselect_chooser = forms.radio_buttons( parent=self.GetWin(), value=self.preselect, callback=self.set_preselect, label='preselect', choices=eval(prefreqs), labels=eval(prenames), style=wx.RA_HORIZONTAL, ) self.GridAdd(self._preselect_chooser, 0, 4, 1, 1) def _pilot_level_probe(): while True: val = self.pilot_probe.level() try: self.set_pilot_level(val) except AttributeError, e: pass time.sleep(1.0/(5)) _pilot_level_thread = threading.Thread(target=_pilot_level_probe) _pilot_level_thread.daemon = True _pilot_level_thread.start() self.low_pass_filter_3 = gr.fir_filter_fff(1, firdes.low_pass( 3, asrate/500, 10, 3, firdes.WIN_HAMMING, 6.76)) self.low_pass_filter_2 = gr.fir_filter_fff(10, firdes.low_pass( 3, asrate/50, 100, 30, firdes.WIN_HAMMING, 6.76)) self.low_pass_filter_1 = gr.fir_filter_fff(10, firdes.low_pass( 3, asrate/5, 1e3, 200, firdes.WIN_HAMMING, 6.76)) self.low_pass_filter_0 = gr.fir_filter_fff(5, firdes.low_pass( 3, asrate, 10e3, 2e3, firdes.WIN_HAMMING, 6.76)) _igain_sizer = wx.BoxSizer(wx.VERTICAL) self._igain_text_box = forms.text_box( parent=self.GetWin(), sizer=_igain_sizer, value=self.igain, callback=self.set_igain, label="RF Gain", converter=forms.float_converter(), proportion=0, ) self._igain_slider = forms.slider( parent=self.GetWin(), sizer=_igain_sizer, value=self.igain, callback=self.set_igain, minimum=0, maximum=50, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_igain_sizer, 1, 1, 1, 1) _ifreq_sizer = wx.BoxSizer(wx.VERTICAL) self._ifreq_text_box = forms.text_box( parent=self.GetWin(), sizer=_ifreq_sizer, value=self.ifreq, callback=self.set_ifreq, label="Center Frequency", converter=forms.float_converter(), proportion=0, ) self._ifreq_slider = forms.slider( parent=self.GetWin(), sizer=_ifreq_sizer, value=self.ifreq, callback=self.set_ifreq, minimum=88.1e6, maximum=108.1e6, num_steps=200, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.GridAdd(_ifreq_sizer, 0, 0, 1, 1) self.gr_wavfile_sink_0 = gr.wavfile_sink("/dev/null" if record == False else capture_file, 2, int(farate), 16) self.gr_sub_xx_0 = gr.sub_ff(1) self.gr_single_pole_iir_filter_xx_1 = gr.single_pole_iir_filter_ff(2.5/(asrate/500), 1) self.gr_single_pole_iir_filter_xx_0 = gr.single_pole_iir_filter_ff(1.0/(asrate/3), 1) self.gr_multiply_xx_1 = gr.multiply_vff(1) self.gr_multiply_xx_0_0 = gr.multiply_vff(1) self.gr_multiply_xx_0 = gr.multiply_vff(1) self.gr_multiply_const_vxx_3 = gr.multiply_const_vff((3.16e3 if st_enabled else 0, )) self.gr_multiply_const_vxx_2 = gr.multiply_const_vff((1.0 if st_enabled else 1.414, )) self.gr_multiply_const_vxx_1_0 = gr.multiply_const_vff((0 if st_enabled else 1, )) self.gr_multiply_const_vxx_1 = gr.multiply_const_vff((0 if squelch_probe == 0 else 1.0, )) self.gr_multiply_const_vxx_0_0 = gr.multiply_const_vff((vol*1.5*10.0, )) self.gr_multiply_const_vxx_0 = gr.multiply_const_vff((vol*1.5*10.0 if st_enabled else 0, )) self.gr_keep_one_in_n_0 = gr.keep_one_in_n(gr.sizeof_float*1, int(asrate/3)) self.gr_freq_xlating_fir_filter_xxx_0 = gr.freq_xlating_fir_filter_ccc(4, (osmo_taps), 200e3+fine+(-12e3*discrim_dc), 1.0e6) self.gr_fractional_interpolator_xx_0_0 = gr.fractional_interpolator_ff(0, asrate/farate) self.gr_fractional_interpolator_xx_0 = gr.fractional_interpolator_ff(0, asrate/farate) self.gr_fft_filter_xxx_1_0_0 = gr.fft_filter_fff(1, (firdes.band_pass(tone_high/10.0,asrate,3.5e3,15.0e3,5.0e3,firdes.WIN_HAMMING)), 1) self.gr_fft_filter_xxx_1_0 = gr.fft_filter_fff(1, (firdes.band_pass(tone_med/10.0,asrate,1.0e3,4.0e3,2.0e3,firdes.WIN_HAMMING)), 1) self.gr_fft_filter_xxx_1 = gr.fft_filter_fff(1, (firdes.low_pass(tone_low/10.0,asrate,1.2e3,500,firdes.WIN_HAMMING)), 1) self.gr_fft_filter_xxx_0_0_0 = gr.fft_filter_fff(1, (firdes.band_pass(tone_high/10.0,asrate,3.5e3,13.5e3,3.5e3,firdes.WIN_HAMMING)), 1) self.gr_fft_filter_xxx_0_0 = gr.fft_filter_fff(1, (firdes.band_pass(tone_med/10.0,asrate,1.0e3,4.0e3,2.0e3,firdes.WIN_HAMMING)), 1) self.gr_fft_filter_xxx_0 = gr.fft_filter_fff(1, (firdes.low_pass(tone_low/10.0,asrate,1.2e3,500,firdes.WIN_HAMMING)), 1) self.gr_divide_xx_0 = gr.divide_ff(1) self.gr_agc_xx_1 = gr.agc_cc(1e-2, 0.35, 1.0, 5000) self.gr_add_xx_2_0 = gr.add_vff(1) self.gr_add_xx_2 = gr.add_vff(1) self.gr_add_xx_1 = gr.add_vff(1) self.gr_add_xx_0 = gr.add_vff(1) self.gr_add_const_vxx_0 = gr.add_const_vff((1.0e-7, )) self._dm_chooser = forms.radio_buttons( parent=self.GetWin(), value=self.dm, callback=self.set_dm, label="FM Deemphasis", choices=[75.0e-6, 50.0e-6], labels=["NA", "EU"], style=wx.RA_HORIZONTAL, ) self.GridAdd(self._dm_chooser, 0, 5, 1, 1) self.blks2_wfm_rcv_0 = blks2.wfm_rcv( quad_rate=samp_rate, audio_decimation=2, ) self.blks2_fm_deemph_0_0 = blks2.fm_deemph(fs=farate, tau=deemph) self.blks2_fm_deemph_0 = blks2.fm_deemph(fs=farate, tau=deemph) self.band_pass_filter_2_0 = gr.fir_filter_fff(1, firdes.band_pass( 20, asrate, 17.5e3, 17.9e3, 250, firdes.WIN_HAMMING, 6.76)) self.band_pass_filter_2 = gr.fir_filter_fff(1, firdes.band_pass( 10, asrate, 18.8e3, 19.2e3, 350, firdes.WIN_HAMMING, 6.76)) self.band_pass_filter_0_0 = gr.fir_filter_fff(1, firdes.band_pass( 1, asrate, 38e3-(15e3), 38e3+(15e3), 4.0e3, firdes.WIN_HAMMING, 6.76)) self.audio_sink_0 = audio.sink(int(farate), "" if ahw == "Default" else ahw, True) ################################################## # Connections ################################################## self.connect((self.gr_add_xx_1, 0), (self.gr_fractional_interpolator_xx_0, 0)) self.connect((self.gr_sub_xx_0, 0), (self.gr_fractional_interpolator_xx_0_0, 0)) self.connect((self.band_pass_filter_0_0, 0), (self.gr_multiply_xx_1, 0)) self.connect((self.gr_multiply_const_vxx_1_0, 0), (self.gr_add_xx_0, 0)) self.connect((self.band_pass_filter_2_0, 0), (self.gr_multiply_xx_0, 0)) self.connect((self.band_pass_filter_2_0, 0), (self.gr_multiply_xx_0, 1)) self.connect((self.gr_multiply_xx_0_0, 0), (self.gr_divide_xx_0, 0)) self.connect((self.gr_divide_xx_0, 0), (self.gr_single_pole_iir_filter_xx_0, 0)) self.connect((self.gr_multiply_xx_0, 0), (self.gr_add_const_vxx_0, 0)) self.connect((self.gr_add_const_vxx_0, 0), (self.gr_divide_xx_0, 1)) self.connect((self.gr_single_pole_iir_filter_xx_0, 0), (self.gr_keep_one_in_n_0, 0)) self.connect((self.gr_keep_one_in_n_0, 0), (self.pilot_probe, 0)) self.connect((self.band_pass_filter_2, 0), (self.gr_multiply_xx_1, 2)) self.connect((self.band_pass_filter_2, 0), (self.gr_multiply_xx_0_0, 0)) self.connect((self.gr_multiply_const_vxx_2, 0), (self.gr_add_xx_1, 0)) self.connect((self.gr_multiply_const_vxx_2, 0), (self.gr_sub_xx_0, 0)) self.connect((self.gr_multiply_const_vxx_3, 0), (self.gr_sub_xx_0, 1)) self.connect((self.gr_multiply_const_vxx_3, 0), (self.gr_add_xx_1, 1)) self.connect((self.gr_fractional_interpolator_xx_0, 0), (self.gr_multiply_const_vxx_0_0, 0)) self.connect((self.gr_fractional_interpolator_xx_0_0, 0), (self.gr_multiply_const_vxx_0, 0)) self.connect((self.band_pass_filter_2, 0), (self.gr_multiply_xx_1, 1)) self.connect((self.gr_multiply_xx_1, 0), (self.gr_fft_filter_xxx_0, 0)) self.connect((self.gr_fft_filter_xxx_1, 0), (self.gr_add_xx_2, 0)) self.connect((self.gr_fft_filter_xxx_1_0, 0), (self.gr_add_xx_2, 1)) self.connect((self.gr_fft_filter_xxx_1_0_0, 0), (self.gr_add_xx_2, 2)) self.connect((self.gr_add_xx_2, 0), (self.gr_multiply_const_vxx_2, 0)) self.connect((self.gr_add_xx_2_0, 0), (self.gr_multiply_const_vxx_3, 0)) self.connect((self.gr_fft_filter_xxx_0, 0), (self.gr_add_xx_2_0, 0)) self.connect((self.gr_fft_filter_xxx_0_0, 0), (self.gr_add_xx_2_0, 1)) self.connect((self.gr_multiply_xx_1, 0), (self.gr_fft_filter_xxx_0_0, 0)) self.connect((self.gr_fft_filter_xxx_0_0_0, 0), (self.gr_add_xx_2_0, 2)) self.connect((self.gr_multiply_xx_1, 0), (self.gr_fft_filter_xxx_0_0_0, 0)) self.connect((self.blks2_fm_deemph_0, 0), (self.gr_multiply_const_vxx_1_0, 0)) self.connect((self.blks2_fm_deemph_0, 0), (self.gr_wavfile_sink_0, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.gr_fft_filter_xxx_1, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.gr_fft_filter_xxx_1_0, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.gr_fft_filter_xxx_1_0_0, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.wxgui_fftsink2_0, 0)) self.connect((self.gr_multiply_const_vxx_0_0, 0), (self.blks2_fm_deemph_0, 0)) self.connect((self.gr_add_xx_0, 0), (self.audio_sink_0, 1)) self.connect((self.gr_multiply_const_vxx_0, 0), (self.blks2_fm_deemph_0_0, 0)) self.connect((self.blks2_fm_deemph_0_0, 0), (self.gr_add_xx_0, 1)) self.connect((self.band_pass_filter_2, 0), (self.gr_multiply_xx_0_0, 1)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.band_pass_filter_2, 0)) self.connect((self.blks2_fm_deemph_0, 0), (self.audio_sink_0, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.band_pass_filter_2_0, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.band_pass_filter_0_0, 0)) self.connect((self.gr_add_xx_0, 0), (self.gr_wavfile_sink_0, 1)) self.connect((self.blks2_fm_deemph_0, 0), (self.wxgui_scopesink2_0, 0)) self.connect((self.gr_add_xx_0, 0), (self.wxgui_scopesink2_0, 1)) self.connect((self.blks2_wfm_rcv_0, 0), (self.gr_multiply_const_vxx_1, 0)) self.connect((self.gr_agc_xx_1, 0), (self.blks2_wfm_rcv_0, 0)) self.connect((self.gr_freq_xlating_fir_filter_xxx_0, 0), (self.gr_agc_xx_1, 0)) self.connect((self.gr_freq_xlating_fir_filter_xxx_0, 0), (self.input_power, 0)) self.connect((self.blks2_wfm_rcv_0, 0), (self.low_pass_filter_0, 0)) self.connect((self.low_pass_filter_0, 0), (self.low_pass_filter_1, 0)) self.connect((self.low_pass_filter_1, 0), (self.low_pass_filter_2, 0)) self.connect((self.low_pass_filter_2, 0), (self.low_pass_filter_3, 0)) self.connect((self.gr_single_pole_iir_filter_xx_1, 0), (self.dc_level, 0)) self.connect((self.low_pass_filter_3, 0), (self.gr_single_pole_iir_filter_xx_1, 0)) self.connect((self.rtl2832_source_0, 0), (self.gr_freq_xlating_fir_filter_xxx_0, 0)) self.connect((self.gr_freq_xlating_fir_filter_xxx_0, 0), (self.wxgui_waterfallsink2_0, 0))
def __init__(self, demod_class, rx_callback, options): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(0, 0, 0)) options = copy.copy( options) # make a copy so we can destructively modify self._verbose = options.verbose self._bitrate = options.bitrate # desired bit rate self._rx_callback = rx_callback # this callback is fired when a packet arrives self._demod_class = demod_class # the demodulator_class we're using self._chbw_factor = options.chbw_factor # channel filter bandwidth factor # Get demod_kwargs demod_kwargs = self._demod_class.extract_kwargs_from_options(options) # Build the demodulator self.demodulator = self._demod_class(**demod_kwargs) # Make sure the channel BW factor is between 1 and sps/2 # or the filter won't work. if (self._chbw_factor < 1.0 or self._chbw_factor > self.samples_per_symbol() / 2): sys.stderr.write( "Channel bandwidth factor ({0}) must be within the range [1.0, {1}].\n" .format(self._chbw_factor, self.samples_per_symbol() / 2)) sys.exit(1) # Design filter to get actual channel we want sw_decim = 1 chan_coeffs = gr.firdes.low_pass( 1.0, # gain sw_decim * self.samples_per_symbol(), # sampling rate self._chbw_factor, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN) # filter type self.channel_filter = gr.fft_filter_ccc(sw_decim, chan_coeffs) # receiver self.packet_receiver = \ digital.demod_pkts(self.demodulator, access_code=None, callback=self._rx_callback, threshold=-1) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh, alpha) # Display some information about the setup if self._verbose: self._print_verbage() # connect block input to channel filter self.connect(self, self.channel_filter) # connect the channel input filter to the carrier power detector self.connect(self.channel_filter, self.probe) # connect channel filter to the packet receiver self.connect(self.channel_filter, self.packet_receiver)
def __init__(self, rx_callback, options): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(0, 0, 0)) options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._log = options.log self._rx_callback = rx_callback # this callback is fired when there's a packet available self._rcvd_pktq = gr.msg_queue() # holds packets from the PHY self._modulation = options.modulation self._fft_length = options.fft_length self._occupied_tones = options.occupied_tones self._cp_length = options.cp_length self._snr = options.snr # Use freq domain to get doubled-up known symbol for correlation in time domain zeros_on_left = int(math.ceil((self._fft_length - self._occupied_tones)/2.0)) preamble_sequence = known_symbols_4512_3[0:self._occupied_tones] training_sequence = ( known_symbols_4512_3[self._occupied_tones:self._occupied_tones*2], \ known_symbols_4512_3[self._occupied_tones*2:self._occupied_tones*3] ) for i in range(len(preamble_sequence)): if((zeros_on_left + i) & 1): preamble_sequence[i] = 0 # hard-coded known symbols preambles = (preamble_sequence,) symbol_length = self._fft_length + self._cp_length self.ofdm_recv = ofdm_receiver(self._fft_length, self._cp_length, self._occupied_tones, self._snr, preambles, training_sequence, options.log) mods = {"bpsk": 2, "qpsk": 4, "8psk": 8, "qam8": 8, "qam16": 16, "qam64": 64, "qam256": 256} arity = mods[self._modulation] rot = 1 if self._modulation == "qpsk": rot = (0.707+0.707j) # FIXME: pass the constellation objects instead of just the points if(self._modulation.find("psk") >= 0): constel = psk.psk_constellation(arity) rotated_const = map(lambda pt: pt * rot, constel.points()) elif(self._modulation.find("qam") >= 0): constel = qam.qam_constellation(arity) rotated_const = map(lambda pt: pt * rot, constel.points()) #print rotated_const phgain = 0.25 frgain = phgain*phgain / 4.0 self.ofdm_demod = gtlib.ofdm_frame_sink(rotated_const, range(arity), self._rcvd_pktq, self._occupied_tones, phgain, frgain) """ # receiver self.ofdm_rx = ofdm.ofdm_demod(options, callback=self._rx_callback) """ # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha) self.connect(self, self.ofdm_recv) self.connect((self.ofdm_recv, 0), (self.ofdm_demod, 0)) self.connect((self.ofdm_recv, 1), (self.ofdm_demod, 1)) # added output signature to work around bug, though it might not be a bad # thing to export, anyway self.connect(self.ofdm_recv.chan_filt, self.probe) if options.log: self.connect(self.ofdm_demod, gr.file_sink(gr.sizeof_gr_complex*self._occupied_tones, "ofdm_frame_sink_c.dat")) else: self.connect(self.ofdm_demod, gr.null_sink(gr.sizeof_gr_complex*self._occupied_tones)) # Display some information about the setup if self._verbose: self._print_verbage() self._watcher = _queue_watcher_thread(self._rcvd_pktq, self._rx_callback)
1.0, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN) # filter type self.channel_filter = gr.fft_filter_ccc(sw_decim, chan_coeffs) # receiver self.packet_receiver = \ digital.demod_pkts(self.demodulator, access_code=None, callback=self._rx_callback, threshold=-1) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh,alpha) # Display some information about the setup if self._verbose: self._print_verbage() ######################################### # CONNECTIONS ######################################### # connect block input to channel filter self.connect(self, self.channel_filter) # connect the channel input filter to the carrier power detector self.connect(self.channel_filter, self.probe)
def __init__(self, ahw="default", freq=150.0e6, ppm=0.0, vol=1.0, ftune=0.0, xftune=0.0, srate=1.0e6, upclo=0.0, devinfo="rtl=0", agc=0, arate=48.0e3, upce=0, mthresh=-10.0, offs=50.e3, flist="", dfifo="multimode_fifo", mbw=2.0e3, deemph=75.0e-6, dmode="NFM1"): grc_wxgui.top_block_gui.__init__(self, title="Multimode Radio Receiver") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) ################################################## # Parameters ################################################## self.ahw = ahw self.freq = freq self.ppm = ppm self.vol = vol self.ftune = ftune self.xftune = xftune self.srate = srate self.upclo = upclo self.devinfo = devinfo self.agc = agc self.arate = arate self.upce = upce self.mthresh = mthresh self.offs = offs self.flist = flist self.dfifo = dfifo self.mbw = mbw self.deemph = deemph self.dmode = dmode ################################################## # Variables ################################################## self.sc_list_str = sc_list_str = flist self.zoom = zoom = 1 self.thresh = thresh = mthresh self.scan_rate = scan_rate = 15 self.scan_power = scan_power = 0 self.sc_low = sc_low = 150e6 self.sc_listm = sc_listm = False self.sc_list = sc_list = eval("["+sc_list_str+"]") self.sc_incr = sc_incr = 12.5e3 self.sc_high = sc_high = 300e6 self.sc_ena = sc_ena = False self.samp_rate = samp_rate = int(mh.get_good_rate(devinfo,srate)) self.rf_power = rf_power = 0 self.ifreq = ifreq = freq self.zoomed_lp = zoomed_lp = (samp_rate/2.1)/zoom self.wbfm = wbfm = 200e3 self.rf_d_power = rf_d_power = 0 self.mode = mode = dmode self.logpower = logpower = math.log10(rf_power+1.0e-14)*10.0 self.cur_freq = cur_freq = mh.scan_freq_out(sc_ena,sc_low,sc_high,freq,ifreq,scan_power+1.0e-14,thresh,sc_incr,scan_rate,sc_listm,sc_list) self.bw = bw = mbw self.audio_int_rate = audio_int_rate = 40e3 self.zoom_taps = zoom_taps = firdes.low_pass(1.0,samp_rate,zoomed_lp,zoomed_lp/3,firdes.WIN_HAMMING,6.76) self.xfine = xfine = xftune self.volume = volume = vol self.variable_static_text_1 = variable_static_text_1 = cur_freq self.variable_static_text_0_0 = variable_static_text_0_0 = samp_rate self.variable_static_text_0 = variable_static_text_0 = float(int(math.log10(rf_d_power+1.0e-14)*100.0)/10.0) self.upc_offset = upc_offset = upclo self.upc = upc = upce self.ssbo = ssbo = -bw/2 if mode == "LSB" else 0.0 self.sc_list_len = sc_list_len = len(sc_list) self.rfgain = rfgain = 25 self.record_file = record_file = "recording.wav" self.record = record = False self.offset = offset = offs self.muted = muted = 0.0 if logpower >= thresh else 1 self.main_taps = main_taps = firdes.low_pass(1.0,wbfm,mh.get_mode_deviation(mode,bw)*1.05,mh.get_mode_deviation(mode,bw)/2.0,firdes.WIN_HAMMING,6.76) self.k = k = wbfm/(2*math.pi*mh.get_mode_deviation(mode,bw)) self.iagc = iagc = agc self.freq_update = freq_update = 0 self.fine = fine = ftune self.digi_rate = digi_rate = 50e3 self.aratio = aratio = int(wbfm/audio_int_rate) ################################################## # Blocks ################################################## self.rf_probe = gr.probe_avg_mag_sqrd_c(0, 0.015) self.Main = self.Main = wx.Notebook(self.GetWin(), style=wx.NB_TOP) self.Main.AddPage(grc_wxgui.Panel(self.Main), "Main Controls") self.Main.AddPage(grc_wxgui.Panel(self.Main), "Scan/Upconv Controls") self.Add(self.Main) self._zoom_chooser = forms.drop_down( parent=self.Main.GetPage(0).GetWin(), value=self.zoom, callback=self.set_zoom, label="Spectral Zoom Ratio", choices=[1, 2, 5, 10, 20, 50, 100], labels=[], ) self.Main.GetPage(0).GridAdd(self._zoom_chooser, 1, 4, 1, 1) _xfine_sizer = wx.BoxSizer(wx.VERTICAL) self._xfine_text_box = forms.text_box( parent=self.Main.GetPage(0).GetWin(), sizer=_xfine_sizer, value=self.xfine, callback=self.set_xfine, label="Extra Fine Tuning", converter=forms.float_converter(), proportion=0, ) self._xfine_slider = forms.slider( parent=self.Main.GetPage(0).GetWin(), sizer=_xfine_sizer, value=self.xfine, callback=self.set_xfine, minimum=-1.0e3, maximum=1.0e3, num_steps=200, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Main.GetPage(0).GridAdd(_xfine_sizer, 0, 3, 1, 1) _volume_sizer = wx.BoxSizer(wx.VERTICAL) self._volume_text_box = forms.text_box( parent=self.Main.GetPage(0).GetWin(), sizer=_volume_sizer, value=self.volume, callback=self.set_volume, label="Volume", converter=forms.float_converter(), proportion=0, ) self._volume_slider = forms.slider( parent=self.Main.GetPage(0).GetWin(), sizer=_volume_sizer, value=self.volume, callback=self.set_volume, minimum=1.0, maximum=10.0, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Main.GetPage(0).GridAdd(_volume_sizer, 0, 0, 1, 1) self._upc_offset_text_box = forms.text_box( parent=self.Main.GetPage(1).GetWin(), value=self.upc_offset, callback=self.set_upc_offset, label="Upconv. LO Freq", converter=forms.float_converter(), ) self.Main.GetPage(1).GridAdd(self._upc_offset_text_box, 3, 2, 1, 2) self._upc_check_box = forms.check_box( parent=self.Main.GetPage(1).GetWin(), value=self.upc, callback=self.set_upc, label="Ext. Upconv.", true=1, false=0, ) self.Main.GetPage(1).GridAdd(self._upc_check_box, 3, 0, 1, 1) _rfgain_sizer = wx.BoxSizer(wx.VERTICAL) self._rfgain_text_box = forms.text_box( parent=self.Main.GetPage(0).GetWin(), sizer=_rfgain_sizer, value=self.rfgain, callback=self.set_rfgain, label="RF Gain", converter=forms.float_converter(), proportion=0, ) self._rfgain_slider = forms.slider( parent=self.Main.GetPage(0).GetWin(), sizer=_rfgain_sizer, value=self.rfgain, callback=self.set_rfgain, minimum=0, maximum=50, num_steps=200, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Main.GetPage(0).GridAdd(_rfgain_sizer, 2, 1, 1, 1) self._record_file_text_box = forms.text_box( parent=self.Main.GetPage(0).GetWin(), value=self.record_file, callback=self.set_record_file, label="Recording Filename", converter=forms.str_converter(), ) self.Main.GetPage(0).GridAdd(self._record_file_text_box, 2, 3, 1, 3) self._record_check_box = forms.check_box( parent=self.Main.GetPage(0).GetWin(), value=self.record, callback=self.set_record, label="Record", true=True, false=False, ) self.Main.GetPage(0).GridAdd(self._record_check_box, 2, 2, 1, 1) _offset_sizer = wx.BoxSizer(wx.VERTICAL) self._offset_text_box = forms.text_box( parent=self.Main.GetPage(0).GetWin(), sizer=_offset_sizer, value=self.offset, callback=self.set_offset, label="LO Offset", converter=forms.float_converter(), proportion=0, ) self._offset_slider = forms.slider( parent=self.Main.GetPage(0).GetWin(), sizer=_offset_sizer, value=self.offset, callback=self.set_offset, minimum=25e3, maximum=500e3, num_steps=200, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Main.GetPage(0).GridAdd(_offset_sizer, 1, 3, 1, 1) self._mode_chooser = forms.drop_down( parent=self.Main.GetPage(0).GetWin(), value=self.mode, callback=self.set_mode, label="Mode", choices=mh.get_modes_values(), labels=mh.get_modes_names(), ) self.Main.GetPage(0).GridAdd(self._mode_chooser, 0, 4, 1, 1) self._iagc_check_box = forms.check_box( parent=self.Main.GetPage(0).GetWin(), value=self.iagc, callback=self.set_iagc, label="AGC", true=1, false=0, ) self.Main.GetPage(0).GridAdd(self._iagc_check_box, 2, 0, 1, 1) def _freq_update_probe(): while True: val = self.rf_probe.level() try: self.set_freq_update(val) except AttributeError, e: pass time.sleep(1.0/(1.0/(2.5))) _freq_update_thread = threading.Thread(target=_freq_update_probe) _freq_update_thread.daemon = True _freq_update_thread.start() _fine_sizer = wx.BoxSizer(wx.VERTICAL) self._fine_text_box = forms.text_box( parent=self.Main.GetPage(0).GetWin(), sizer=_fine_sizer, value=self.fine, callback=self.set_fine, label="Fine Tuning", converter=forms.float_converter(), proportion=0, ) self._fine_slider = forms.slider( parent=self.Main.GetPage(0).GetWin(), sizer=_fine_sizer, value=self.fine, callback=self.set_fine, minimum=-35e3, maximum=35e3, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Main.GetPage(0).GridAdd(_fine_sizer, 0, 2, 1, 1) self.display_probe = gr.probe_avg_mag_sqrd_c(0, 0.002) _bw_sizer = wx.BoxSizer(wx.VERTICAL) self._bw_text_box = forms.text_box( parent=self.Main.GetPage(0).GetWin(), sizer=_bw_sizer, value=self.bw, callback=self.set_bw, label="AM/SSB Bandwidth", converter=forms.float_converter(), proportion=0, ) self._bw_slider = forms.slider( parent=self.Main.GetPage(0).GetWin(), sizer=_bw_sizer, value=self.bw, callback=self.set_bw, minimum=1.0e3, maximum=audio_int_rate/2, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Main.GetPage(0).GridAdd(_bw_sizer, 1, 2, 1, 1) self.wxgui_waterfallsink2_0 = waterfallsink2.waterfall_sink_c( self.Main.GetPage(0).GetWin(), baseband_freq=mh.get_last_returned(freq_update), dynamic_range=40, ref_level=0, ref_scale=2.0, sample_rate=samp_rate/zoom, fft_size=1024, fft_rate=4, average=True, avg_alpha=None, title="Spectrogram", win=window.hamming, ) self.Main.GetPage(0).Add(self.wxgui_waterfallsink2_0.win) def wxgui_waterfallsink2_0_callback(x, y): self.set_freq(x) self.wxgui_waterfallsink2_0.set_callback(wxgui_waterfallsink2_0_callback) self.wxgui_fftsink2_0 = fftsink2.fft_sink_c( self.Main.GetPage(0).GetWin(), baseband_freq=mh.get_last_returned(freq_update), y_per_div=10, y_divs=10, ref_level=0, ref_scale=2.0, sample_rate=samp_rate/zoom, fft_size=1024, fft_rate=4, average=True, avg_alpha=0.1, title="Panorama", peak_hold=False, win=window.hamming, ) self.Main.GetPage(0).Add(self.wxgui_fftsink2_0.win) def wxgui_fftsink2_0_callback(x, y): self.set_freq(x) self.wxgui_fftsink2_0.set_callback(wxgui_fftsink2_0_callback) self._variable_static_text_1_static_text = forms.static_text( parent=self.Main.GetPage(1).GetWin(), value=self.variable_static_text_1, callback=self.set_variable_static_text_1, label="Current Scan Freq", converter=forms.float_converter(), ) self.Main.GetPage(1).GridAdd(self._variable_static_text_1_static_text, 0, 5, 1, 2) self._variable_static_text_0_0_static_text = forms.static_text( parent=self.Main.GetPage(0).GetWin(), value=self.variable_static_text_0_0, callback=self.set_variable_static_text_0_0, label="Actual srate", converter=forms.float_converter(), ) self.Main.GetPage(0).GridAdd(self._variable_static_text_0_0_static_text, 1, 5, 1, 1) self._variable_static_text_0_static_text = forms.static_text( parent=self.Main.GetPage(0).GetWin(), value=self.variable_static_text_0, callback=self.set_variable_static_text_0, label="RF Level", converter=forms.float_converter(), ) self.Main.GetPage(0).GridAdd(self._variable_static_text_0_static_text, 1, 0, 1, 1) _thresh_sizer = wx.BoxSizer(wx.VERTICAL) self._thresh_text_box = forms.text_box( parent=self.Main.GetPage(0).GetWin(), sizer=_thresh_sizer, value=self.thresh, callback=self.set_thresh, label="Mute Threshold", converter=forms.float_converter(), proportion=0, ) self._thresh_slider = forms.slider( parent=self.Main.GetPage(0).GetWin(), sizer=_thresh_sizer, value=self.thresh, callback=self.set_thresh, minimum=-50, maximum=10, num_steps=100, style=wx.SL_HORIZONTAL, cast=float, proportion=1, ) self.Main.GetPage(0).GridAdd(_thresh_sizer, 1, 1, 1, 1) def _scan_power_probe(): while True: val = self.rf_probe.level() try: self.set_scan_power(val) except AttributeError, e: pass time.sleep(1.0/(scan_rate)) _scan_power_thread = threading.Thread(target=_scan_power_probe) _scan_power_thread.daemon = True _scan_power_thread.start() self._sc_low_text_box = forms.text_box( parent=self.Main.GetPage(1).GetWin(), value=self.sc_low, callback=self.set_sc_low, label="Scan Low", converter=forms.float_converter(), ) self.Main.GetPage(1).GridAdd(self._sc_low_text_box, 0, 1, 1, 1) self._sc_listm_check_box = forms.check_box( parent=self.Main.GetPage(1).GetWin(), value=self.sc_listm, callback=self.set_sc_listm, label="Scan List Mode", true=True, false=False, ) self.Main.GetPage(1).GridAdd(self._sc_listm_check_box, 2, 0, 1, 1) self._sc_list_str_text_box = forms.text_box( parent=self.Main.GetPage(1).GetWin(), value=self.sc_list_str, callback=self.set_sc_list_str, label="Scan List", converter=forms.str_converter(), ) self.Main.GetPage(1).GridAdd(self._sc_list_str_text_box, 2, 1, 1, 5) self._sc_incr_chooser = forms.drop_down( parent=self.Main.GetPage(1).GetWin(), value=self.sc_incr, callback=self.set_sc_incr, label="Scan Increment (Hz)", choices=[5.0e3,6.25e3,10.0e3,12.5e3,15e3,25e3], labels=[], ) self.Main.GetPage(1).GridAdd(self._sc_incr_chooser, 0, 0, 1, 1) self._sc_high_text_box = forms.text_box( parent=self.Main.GetPage(1).GetWin(), value=self.sc_high, callback=self.set_sc_high, label="Scan High", converter=forms.float_converter(), ) self.Main.GetPage(1).GridAdd(self._sc_high_text_box, 0, 2, 1, 1) self._sc_ena_check_box = forms.check_box( parent=self.Main.GetPage(1).GetWin(), value=self.sc_ena, callback=self.set_sc_ena, label="Scan Enable", true=True, false=False, ) self.Main.GetPage(1).GridAdd(self._sc_ena_check_box, 0, 3, 1, 1) def _rf_power_probe(): while True: val = self.rf_probe.level() try: self.set_rf_power(val) except AttributeError, e: pass time.sleep(1.0/(10)) _rf_power_thread = threading.Thread(target=_rf_power_probe) _rf_power_thread.daemon = True _rf_power_thread.start() def _rf_d_power_probe(): while True: val = self.display_probe.level() try: self.set_rf_d_power(val) except AttributeError, e: pass time.sleep(1.0/(5)) _rf_d_power_thread = threading.Thread(target=_rf_d_power_probe) _rf_d_power_thread.daemon = True _rf_d_power_thread.start() self.osmosdr_source_c_0 = osmosdr.source_c( args="nchan=" + str(1) + " " + devinfo ) self.osmosdr_source_c_0.set_sample_rate(samp_rate) self.osmosdr_source_c_0.set_center_freq(cur_freq+offset+(upc_offset*float(upc)), 0) self.osmosdr_source_c_0.set_freq_corr(ppm, 0) self.osmosdr_source_c_0.set_gain_mode(iagc, 0) self.osmosdr_source_c_0.set_gain(25 if iagc == 1 else rfgain, 0) self.osmosdr_source_c_0.set_if_gain(20, 0) self._ifreq_text_box = forms.text_box( parent=self.Main.GetPage(0).GetWin(), value=self.ifreq, callback=self.set_ifreq, label="Frequency", converter=forms.float_converter(), ) self.Main.GetPage(0).GridAdd(self._ifreq_text_box, 0, 1, 1, 1) self.gr_wavfile_sink_0 = gr.wavfile_sink("/dev/null" if record == False else record_file, 1, int(audio_int_rate), 8) self.gr_quadrature_demod_cf_0 = gr.quadrature_demod_cf(k) self.gr_multiply_const_vxx_2 = gr.multiply_const_vff((1.0 if mh.get_mode_type(mode) == "FM" else 0.0, )) self.gr_multiply_const_vxx_1 = gr.multiply_const_vff((0.0 if muted else volume/4.5, )) self.gr_multiply_const_vxx_0_0_0 = gr.multiply_const_vff((0.85 if mh.get_mode_type(mode) == "AM" else 0.0, )) self.gr_multiply_const_vxx_0_0 = gr.multiply_const_vff((0.85 if mh.get_mode_type(mode) == "SSB" else 0.0, )) self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc(((1.0/math.sqrt(mh.get_mode_deviation(mode,bw))*250), )) self.gr_keep_one_in_n_1 = gr.keep_one_in_n(gr.sizeof_gr_complex*1, aratio) self.gr_keep_one_in_n_0_0 = gr.keep_one_in_n(gr.sizeof_gr_complex*1, zoom) self.gr_keep_one_in_n_0 = gr.keep_one_in_n(gr.sizeof_gr_complex*1, int(wbfm/digi_rate)) self.gr_freq_xlating_fir_filter_xxx_0_1 = gr.freq_xlating_fir_filter_ccc(1, (1.0, ), (offset+fine+xfine)/(samp_rate/1.0e6), samp_rate) self.gr_fractional_interpolator_xx_0 = gr.fractional_interpolator_ff(0, audio_int_rate/arate) self.gr_file_sink_0 = gr.file_sink(gr.sizeof_gr_complex*1, "/dev/null" if mh.get_mode_type(mode) != "DIG" else dfifo) self.gr_file_sink_0.set_unbuffered(True) self.gr_fft_filter_xxx_3 = gr.fft_filter_ccc(1, (zoom_taps), 1) self.gr_fft_filter_xxx_2_0 = gr.fft_filter_fff(5, (firdes.low_pass(1.0,wbfm,14.5e3,8.5e3,firdes.WIN_HAMMING,6.76)), 1) self.gr_fft_filter_xxx_2 = gr.fft_filter_ccc(1, (main_taps), 1) self.gr_fft_filter_xxx_0 = gr.fft_filter_ccc(int(samp_rate/wbfm), (firdes.low_pass(1.0,samp_rate,98.5e3,66e3,firdes.WIN_HAMMING,6.76)), 1) self.gr_feedforward_agc_cc_0 = gr.feedforward_agc_cc(1024, 0.75) self.gr_complex_to_real_0 = gr.complex_to_real(1) self.gr_complex_to_mag_squared_0 = gr.complex_to_mag_squared(1) self.gr_add_xx_0 = gr.add_vff(1) self.blks2_fm_deemph_0 = blks2.fm_deemph(fs=audio_int_rate, tau=deemph) self.audio_sink_0 = audio.sink(int(arate), ahw, True) ################################################## # Connections ################################################## self.connect((self.gr_multiply_const_vxx_0_0, 0), (self.gr_add_xx_0, 1)) self.connect((self.gr_fractional_interpolator_xx_0, 0), (self.gr_multiply_const_vxx_1, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.audio_sink_0, 0)) self.connect((self.gr_multiply_const_vxx_1, 0), (self.audio_sink_0, 1)) self.connect((self.gr_feedforward_agc_cc_0, 0), (self.gr_complex_to_mag_squared_0, 0)) self.connect((self.osmosdr_source_c_0, 0), (self.gr_freq_xlating_fir_filter_xxx_0_1, 0)) self.connect((self.gr_multiply_const_vxx_0_0_0, 0), (self.gr_add_xx_0, 2)) self.connect((self.gr_feedforward_agc_cc_0, 0), (self.gr_complex_to_real_0, 0)) self.connect((self.gr_complex_to_real_0, 0), (self.gr_multiply_const_vxx_0_0, 0)) self.connect((self.gr_multiply_const_vxx_2, 0), (self.gr_add_xx_0, 0)) self.connect((self.gr_complex_to_mag_squared_0, 0), (self.gr_multiply_const_vxx_0_0_0, 0)) self.connect((self.gr_multiply_const_vxx_0, 0), (self.display_probe, 0)) self.connect((self.gr_multiply_const_vxx_0, 0), (self.rf_probe, 0)) self.connect((self.gr_add_xx_0, 0), (self.gr_fractional_interpolator_xx_0, 0)) self.connect((self.gr_add_xx_0, 0), (self.gr_wavfile_sink_0, 0)) self.connect((self.gr_freq_xlating_fir_filter_xxx_0_1, 0), (self.gr_fft_filter_xxx_0, 0)) self.connect((self.gr_keep_one_in_n_0, 0), (self.gr_file_sink_0, 0)) self.connect((self.gr_freq_xlating_fir_filter_xxx_0_1, 0), (self.gr_fft_filter_xxx_3, 0)) self.connect((self.gr_fft_filter_xxx_3, 0), (self.gr_keep_one_in_n_0_0, 0)) self.connect((self.gr_keep_one_in_n_0_0, 0), (self.wxgui_fftsink2_0, 0)) self.connect((self.gr_keep_one_in_n_0_0, 0), (self.wxgui_waterfallsink2_0, 0)) self.connect((self.blks2_fm_deemph_0, 0), (self.gr_multiply_const_vxx_2, 0)) self.connect((self.gr_quadrature_demod_cf_0, 0), (self.gr_fft_filter_xxx_2_0, 0)) self.connect((self.gr_fft_filter_xxx_2, 0), (self.gr_keep_one_in_n_0, 0)) self.connect((self.gr_fft_filter_xxx_2, 0), (self.gr_multiply_const_vxx_0, 0)) self.connect((self.gr_fft_filter_xxx_0, 0), (self.gr_fft_filter_xxx_2, 0)) self.connect((self.gr_keep_one_in_n_1, 0), (self.gr_feedforward_agc_cc_0, 0)) self.connect((self.gr_fft_filter_xxx_2, 0), (self.gr_keep_one_in_n_1, 0)) self.connect((self.gr_fft_filter_xxx_2, 0), (self.gr_quadrature_demod_cf_0, 0)) self.connect((self.gr_fft_filter_xxx_2_0, 0), (self.blks2_fm_deemph_0, 0))
def __init__(self): gr.top_block.__init__(self, "Magsquared") ################################################## # Variables ################################################## self.valdb = 0 self.variable_function_probe_0 = variable_function_probe_0 = 0 self.samp_rate = samp_rate = 125e3 self.gain = gain = 50 self.center_freq = center_freq = 925e6 s = socket.socket() ################################################## # Blocks ################################################## def listener(): while True: c,addr = s.accept() data = c.recv(1024) if (data == 'DataRequest'): c.send("RSS:{0}".format(self.valdb)) c.close() self.gr_probe_avg_mag_sqrd_x_0 = gr.probe_avg_mag_sqrd_c(0, 1e-3) def _variable_function_probe_0_probe(): s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1) if len(sys.argv) == 3: host = sys.argv[1] port = int(sys.argv[2]) else: host = "localhost" port = 5006 s.bind((host,port)) s.listen(5) serverThread = threading.Thread(target=listener) serverThread.start() while True: val = self.gr_probe_avg_mag_sqrd_x_0.level() if (val > 0): self.valdb = 10 * math.log10(val) print self.valdb try: self.set_variable_function_probe_0(val) except AttributeError, e: pass time.sleep(1.0/(7)) _variable_function_probe_0_thread = threading.Thread(target=_variable_function_probe_0_probe) _variable_function_probe_0_thread.daemon = True _variable_function_probe_0_thread.start() self.uhd_usrp_source_0 = uhd.usrp_source( device_addr="", stream_args=uhd.stream_args( cpu_format="fc32", channels=range(1), ), ) self.uhd_usrp_source_0.set_samp_rate(samp_rate) self.uhd_usrp_source_0.set_center_freq(center_freq, 0) self.uhd_usrp_source_0.set_gain(gain, 0) self.uhd_usrp_source_0.set_antenna("TX/RX", 0) self.low_pass_filter_0 = gr.fir_filter_ccf(1, firdes.low_pass( 1, samp_rate, 5000, 1000, firdes.WIN_HAMMING, 6.76)) ################################################## # Connections ################################################## self.connect((self.uhd_usrp_source_0, 0), (self.low_pass_filter_0, 0)) self.connect((self.low_pass_filter_0, 0), (self.gr_probe_avg_mag_sqrd_x_0, 0))
def __init__(self, demod_class, rx_callback, options, source_block): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(0, 0, 0)) options = copy.copy( options) # make a copy so we can destructively modify self._verbose = options.verbose self._bitrate = options.bitrate # desired bit rate self._rx_callback = rx_callback # this callback is fired when a packet arrives self._demod_class = demod_class # the demodulator_class we're using self._chbw_factor = options.chbw_factor # channel filter bandwidth factor # Get demod_kwargs demod_kwargs = self._demod_class.extract_kwargs_from_options(options) #Give hooks of usrp to blocks downstream self.source_block = source_block ######################################### # Build Blocks ######################################### # Build the demodulator self.demodulator = self._demod_class(**demod_kwargs) # Make sure the channel BW factor is between 1 and sps/2 # or the filter won't work. if (self._chbw_factor < 1.0 or self._chbw_factor > self.samples_per_symbol() / 2): sys.stderr.write( "Channel bandwidth factor ({0}) must be within the range [1.0, {1}].\n" .format(self._chbw_factor, self.samples_per_symbol() / 2)) sys.exit(1) # Design filter to get actual channel we want sw_decim = 1 chan_coeffs = gr.firdes.low_pass( 1.0, # gain sw_decim * self.samples_per_symbol(), # sampling rate self._chbw_factor, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN) # filter type self.channel_filter = gr.fft_filter_ccc(sw_decim, chan_coeffs) # receiver self.packet_receiver = \ digital.demod_pkts(self.demodulator, access_code=None, callback=self._rx_callback, threshold=-1) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe = gr.probe_avg_mag_sqrd_c(thresh, alpha) # Display some information about the setup if self._verbose: self._print_verbage() # More Carrier Sensing with FFT #self.gr_vector_sink = gr.vector_sink_c(1024) #self.gr_stream_to_vector = gr.stream_to_vector(gr.sizeof_gr_complex*1, 1024) #self.gr_head = gr.head(gr.sizeof_gr_complex*1024, 1024) #self.fft = fft.fft_vcc(1024, True, (window.blackmanharris(1024)), True, 1) # Parameters usrp_rate = options.bitrate self.fft_size = 1024 self.min_freq = 2.4e9 - 0.75e6 self.max_freq = 2.4e9 + 0.75e6 self.tune_delay = 0.001 self.dwell_delay = 0.01 s2v = gr.stream_to_vector(gr.sizeof_gr_complex, self.fft_size) mywindow = window.blackmanharris(self.fft_size) fft = gr.fft_vcc(self.fft_size, True, mywindow) power = 0 for tap in mywindow: power += tap * tap c2mag = gr.complex_to_mag_squared(self.fft_size) # FIXME the log10 primitive is dog slow log = gr.nlog10_ff( 10, self.fft_size, -20 * math.log10(self.fft_size) - 10 * math.log10(power / self.fft_size)) # Set the freq_step to 75% of the actual data throughput. # This allows us to discard the bins on both ends of the spectrum. #self.freq_step = 0.75 * usrp_rate #self.min_center_freq = self.min_freq + self.freq_step/2 #nsteps = math.ceil((self.max_freq - self.min_freq) / self.freq_step) #self.max_center_freq = self.min_center_freq + (nsteps * self.freq_step) self.freq_step = 1.5e6 self.min_center_freq = self.min_freq nsteps = 1 self.max_center_freq = self.max_freq self.next_freq = self.min_center_freq tune_delay = max(0, int(round(self.tune_delay * usrp_rate / self.fft_size))) # in fft_frames dwell_delay = max(1, int( round(self.dwell_delay * usrp_rate / self.fft_size))) # in fft_frames self.msgq = gr.msg_queue(16) self._tune_callback = tune( self) # hang on to this to keep it from being GC'd stats = gr.bin_statistics_f(self.fft_size, self.msgq, self._tune_callback, tune_delay, dwell_delay) ###################################################### # Connect Blocks Together ###################################################### #channel-filter-->Probe_Avg_Mag_Sqrd # -->Packet_Receiver (Demod Done Here!!) # # connect FFT sampler to system #self.connect(self, self.gr_stream_to_vector, self.fft, self.gr_vector_sink) # connect block input to channel filter self.connect(self, self.channel_filter) # connect the channel input filter to the carrier power detector self.connect(self.channel_filter, self.probe) # connect channel filter to the packet receiver self.connect(self.channel_filter, self.packet_receiver) # FIXME leave out the log10 until we speed it up #self.connect(self.u, s2v, fft, c2mag, log, stats) self.connect(self.channel_filter, s2v, fft, c2mag, stats)
def __init__(self, demod_class, rx_callback, options): gr.hier_block2.__init__(self, "receive_path", gr.io_signature(1, 1, gr.sizeof_gr_complex), gr.io_signature(0, 0, 0)) options = copy.copy(options) # make a copy so we can destructively modify self._verbose = options.verbose self._bitrate = options.bitrate # desired bit rate self._rx_callback = rx_callback # this callback is fired when a packet arrives self._demod_class = demod_class # the demodulator_class we're using self._chbw_factor = options.chbw_factor # channel filter bandwidth factor # Get demod_kwargs demod_kwargs = self._demod_class.extract_kwargs_from_options(options) # Build the demodulator self.demodulator = self._demod_class(**demod_kwargs) # Make sure the channel BW factor is between 1 and sps/2 # or the filter won't work. if(self._chbw_factor < 1.0 or self._chbw_factor > self.samples_per_symbol()/2): sys.stderr.write("Channel bandwidth factor ({0}) must be within the range [1.0, {1}].\n".format(self._chbw_factor, self.samples_per_symbol()/2)) sys.exit(1) # Design filter to get actual channel we want sw_decim = 1 chan_coeffs = gr.firdes.low_pass (1.0, # gain sw_decim * self.samples_per_symbol(), # sampling rate self._chbw_factor, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN) # filter type self.channel_filter = gr.fft_filter_ccc(sw_decim, chan_coeffs) # receiver self.packet_receiver = \ digital.demod_pkts(self.demodulator, access_code=None, callback=self._rx_callback, threshold=-1) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust self.probe_lp = gr.probe_avg_mag_sqrd_c(thresh,alpha) self.probe_hp = gr.probe_avg_mag_sqrd_c(thresh,alpha) # Display some information about the setup if self._verbose: self._print_verbage() low_pass_taps = [ -0.0401, 0.0663, 0.0468, -0.0235, -0.0222, 0.0572, 0.0299, -0.1001, -0.0294, 0.3166, 0.5302, 0.3166, -0.0294, -0.1001, 0.0299, 0.0572, -0.0222, -0.0235, 0.0468, 0.0663, -0.0401] high_pass_taps = [ -0.0389, -0.0026, 0.0302, 0.0181, -0.0357, -0.0394, 0.0450, 0.0923, -0.0472, -0.3119, 0.5512, -0.3119, -0.0472, 0.0923, 0.0450, -0.0394, -0.0357, 0.0181, 0.0302, -0.0026, -0.0389] #self.lp = filter.adaptive_fir_ccf("lp", 1, low_pass_taps) #self.hp = filter.adaptive_fir_ccf("hp", 1, high_pass_taps) self.lp = gr.fft_filter_ccc(1, low_pass_taps) self.hp = gr.fft_filter_ccc(1, high_pass_taps) self.power_low_pass = gr.complex_to_mag_squared() self.power_high_pass = gr.complex_to_mag_squared() self.power_low_pass_buf = circular_buffer_block() self.power_high_pass_buf = circular_buffer_block() self.connect(self, self.lp) self.connect(self.lp, self.probe_lp) self.connect(self, self.hp) self.connect(self.hp, self.probe_hp)
def __init__(self, demod_class, rx_callback, options): gr.hier_block2.__init__( self, "receive_path", gr.io_signature(0, 0, 0), # Input signature gr.io_signature(0, 0, 0)) # Output signature options = copy.copy( options) # make a copy so we can destructively modify self._which = options.which # the USRP board attached self._verbose = options.verbose self._rx_freq = options.rx_freq # receiver's center frequency self._rx_gain = options.rx_gain # receiver's gain self._rx_subdev_spec = options.rx_subdev_spec # daughterboard to use self._bitrate = options.bitrate # desired bit rate self._decim = options.decim # Decimating rate for the USRP (prelim) self._samples_per_symbol = options.samples_per_symbol # desired samples/symbol self._fusb_block_size = options.fusb_block_size # usb info for USRP self._fusb_nblocks = options.fusb_nblocks # usb info for USRP self._rx_callback = rx_callback # this callback is fired when there's a packet available self._demod_class = demod_class # the demodulator_class we're using if self._rx_freq is None: sys.stderr.write( "-f FREQ or --freq FREQ or --rx-freq FREQ must be specified\n") raise SystemExit # Set up USRP source; also adjusts decim, samples_per_symbol, and bitrate self._setup_usrp_source() g = self.subdev.gain_range() if options.show_rx_gain_range: print "Rx Gain Range: minimum = %g, maximum = %g, step size = %g" \ % (g[0], g[1], g[2]) self.set_gain(options.rx_gain) self.set_auto_tr(True) # enable Auto Transmit/Receive switching # Set RF frequency ok = self.set_freq(self._rx_freq) if not ok: print "Failed to set Rx frequency to %s" % ( eng_notation.num_to_str(self._rx_freq)) raise ValueError, eng_notation.num_to_str(self._rx_freq) # copy the final answers back into options for use by demodulator options.samples_per_symbol = self._samples_per_symbol options.bitrate = self._bitrate options.decim = self._decim # Get demod_kwargs demod_kwargs = self._demod_class.extract_kwargs_from_options(options) # Design filter to get actual channel we want sw_decim = 1 chan_coeffs = gr.firdes.low_pass( 1.0, # gain sw_decim * self._samples_per_symbol, # sampling rate 1.0, # midpoint of trans. band 0.5, # width of trans. band gr.firdes.WIN_HANN) # filter type # Decimating channel filter # complex in and out, float taps self.chan_filt = gr.fft_filter_ccc(sw_decim, chan_coeffs) #self.chan_filt = gr.fir_filter_ccf(sw_decim, chan_coeffs) # receiver self.packet_receiver = \ blks2.demod_pkts(self._demod_class(**demod_kwargs), access_code=None, callback=self._rx_callback, threshold=-1) # Carrier Sensing Blocks alpha = 0.001 thresh = 30 # in dB, will have to adjust if options.log_rx_power == True: self.probe = gr.probe_avg_mag_sqrd_cf(thresh, alpha) self.power_sink = gr.file_sink(gr.sizeof_float, "rxpower.dat") self.connect(self.chan_filt, self.probe, self.power_sink) else: self.probe = gr.probe_avg_mag_sqrd_c(thresh, alpha) self.connect(self.chan_filt, self.probe) # Display some information about the setup if self._verbose: self._print_verbage() self.connect(self.u, self.chan_filt, self.packet_receiver)