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, 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.data_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 = filter.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
filter.firdes.WIN_HAMMING) #filter type
self.channel_filter = filter.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 = analog.pwr_squelch_cc(50, 1, 0, True)
# self.wxgui_constellationsink2_0_0 = constsink_gl.const_sink_c(
# principal_gui.GetWin(),
# title="Constellation Plot",
# sample_rate= options.samp_rate,
# frame_rate=5,
# const_size=2048,
# M=2,
# theta=0,
# loop_bw=6.28/100.0,
# fmax=0.05,
# mu=0.5,
# gain_mu=0.001,
# symbol_rate=options.samp_rate/options.samples_per_symbol,
# omega_limit=0.0001,
# )
# principal_gui.Add(self.wxgui_constellationsink2_0_0.win)
'''For stream of bits'''
# self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
# principal_gui.GetWin(),
# baseband_freq=options.freq,
# y_per_div=10,
# y_divs=10,
# ref_level=10,
# ref_scale=2.0,
# sample_rate= 0.5e6,
# fft_size=1024,
# fft_rate=30,
# average=False,
# avg_alpha=None,
# title="FFT Plot",
# peak_hold=False,
# )
# principal_gui.Add(self.wxgui_fftsink2_0.win)
#self.connect(self.u, self.demodulator, self.wxgui_fftsink2_0)
'''End for stream of bits'''
#Reception of packets
self.connect(self.u, self.packet_receiver)