def set_data_chan(self, data_chan):
self.data_chan = data_chan
self.set_packets(
gotenna_packet.encode_shout_packets(self.data_chan, self.app_id,
self.sender_gid, self.initials,
self.message))
self.blocks_vector_source_x_2.set_data(
gotenna_packet.vco(self.center_freq, self.control_chan,
self.data_chan, self.packets) +
[0] * self.silence_time, [])
def __init__(self,
app_id=0x3fff,
initials='VE3IRR',
message='Hello world!',
sender_gid=1234567890):
gr.top_block.__init__(self, "Gotenna Tx Hackrf")
##################################################
# Parameters
##################################################
self.app_id = app_id
self.initials = initials
self.message = message
self.sender_gid = sender_gid
##################################################
# Variables
##################################################
self.samp_per_sym = samp_per_sym = 4
self.interp = interp = 20
self.data_chan = data_chan = 2
self.silence_time = silence_time = 5000
self.samp_rate = samp_rate = 24000 * samp_per_sym * interp
self.packets = packets = gotenna_packet.encode_shout_packets(
data_chan, app_id, sender_gid, initials, message)
self.control_chan = control_chan = 2
self.center_freq = center_freq = 926250000
##################################################
# Blocks
##################################################
self.rational_resampler_xxx_0 = filter.rational_resampler_ccc(
interpolation=interp, decimation=1, taps=None, fractional_bw=None)
self.osmosdr_sink_0 = osmosdr.sink(args="numchan=" + str(1) + " " + '')
self.osmosdr_sink_0.set_time_unknown_pps(osmosdr.time_spec_t())
self.osmosdr_sink_0.set_sample_rate(samp_rate)
self.osmosdr_sink_0.set_center_freq(center_freq, 0)
self.osmosdr_sink_0.set_freq_corr(0, 0)
self.osmosdr_sink_0.set_gain(1, 0)
self.osmosdr_sink_0.set_if_gain(20, 0)
self.osmosdr_sink_0.set_bb_gain(20, 0)
self.osmosdr_sink_0.set_antenna('', 0)
self.osmosdr_sink_0.set_bandwidth(0, 0)
self.digital_gfsk_mod_0 = digital.gfsk_mod(
samples_per_symbol=samp_per_sym,
sensitivity=1.0,
bt=0.5,
verbose=False,
log=False)
self.blocks_vector_source_x_2 = blocks.vector_source_f(
gotenna_packet.vco(center_freq, control_chan, data_chan, packets) +
[0] * silence_time, False, 1, [])
self.blocks_vector_source_x_1 = blocks.vector_source_c(
gotenna_packet.envelope(packets) + [0] * silence_time, False, 1,
[])
self.blocks_vector_source_x_0 = blocks.vector_source_b(
gotenna_packet.gfsk_bytes(packets) + [0] * silence_time, False, 1,
[])
self.blocks_vco_c_0 = blocks.vco_c(samp_rate, 2 * math.pi, 0.9)
self.blocks_repeat_1 = blocks.repeat(gr.sizeof_float * 1,
8 * samp_per_sym * interp)
self.blocks_repeat_0 = blocks.repeat(gr.sizeof_gr_complex * 1,
8 * samp_per_sym)
self.blocks_multiply_xx_1 = blocks.multiply_vcc(1)
self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
##################################################
# Connections
##################################################
self.connect((self.blocks_multiply_xx_0, 0),
(self.rational_resampler_xxx_0, 0))
self.connect((self.blocks_multiply_xx_1, 0), (self.osmosdr_sink_0, 0))
self.connect((self.blocks_repeat_0, 0), (self.blocks_multiply_xx_0, 1))
self.connect((self.blocks_repeat_1, 0), (self.blocks_vco_c_0, 0))
self.connect((self.blocks_vco_c_0, 0), (self.blocks_multiply_xx_1, 1))
self.connect((self.blocks_vector_source_x_0, 0),
(self.digital_gfsk_mod_0, 0))
self.connect((self.blocks_vector_source_x_1, 0),
(self.blocks_repeat_0, 0))
self.connect((self.blocks_vector_source_x_2, 0),
(self.blocks_repeat_1, 0))
self.connect((self.digital_gfsk_mod_0, 0),
(self.blocks_multiply_xx_0, 0))
self.connect((self.rational_resampler_xxx_0, 0),
(self.blocks_multiply_xx_1, 0))
def set_message(self, message):
self.message = message
self.set_packets(
gotenna_packet.encode_shout_packets(self.data_chan, self.app_id,
self.sender_gid, self.initials,
self.message))
def set_sender_gid(self, sender_gid):
self.sender_gid = sender_gid
self.set_packets(
gotenna_packet.encode_shout_packets(self.data_chan, self.app_id,
self.sender_gid, self.initials,
self.message))
def set_initials(self, initials):
self.initials = initials
self.set_packets(
gotenna_packet.encode_shout_packets(self.data_chan, self.app_id,
self.sender_gid, self.initials,
self.message))