def setup_tdma_engines(self):
print ' setup_tdma_engines'
self.tdmaegns = []
for i in range(self.n_devices):
#initial_slot = NODES_PC*self._node_id + i
initial_slot = self.node_slot_start + i
print ' initial slot = %d' % (initial_slot)
print self.addrs[i]
if self.tx_only == False:
number_of_slots = NETWORK_SIZE
self.tdmaegns.append(
precog.tdma_engine(
initial_slot,
0.100, #options.slot_interval,
0.040, #options.guard_interval,
70, #number_of_slots,#options.number_of_slots,
0.000, #options.lead_limit,
self.link_rate,
self.addrs[i],
self.randbinfile,
False))
else:
# if tx_only == True, all the transmitter will transmitt simuletaneously and continuously.
self.tdmaegns.append(
precog.tdma_engine(
initial_slot,
0.100, #options.slot_interval,
0.000, #options.guard_interval,
1, #number_of_slots,#options.number_of_slots,
0.005, #options.lead_limit,
self.link_rate,
self.addrs[i],
self.randbinfile,
False))
def setup_tdma_engines(self):
print ' setup_tdma_engines'
self.tdmaegns = []
for i in range(self.n_devices):
#initial_slot = NODES_PC*self._node_id + i
initial_slot = self.node_slot_start + i
print ' initial slot = %d' %(initial_slot)
print self.addrs[i]
if self.tx_only == False:
number_of_slots = NETWORK_SIZE
self.tdmaegns.append(precog.tdma_engine(initial_slot,
0.100,#options.slot_interval,
0.040,#options.guard_interval,
70, #number_of_slots,#options.number_of_slots,
0.000,#options.lead_limit,
self.link_rate,
self.addrs[i],
self.randbinfile,
False))
else:
# if tx_only == True, all the transmitter will transmitt simuletaneously and continuously.
self.tdmaegns.append(precog.tdma_engine(initial_slot,
0.100,#options.slot_interval,
0.000,#options.guard_interval,
1, #number_of_slots,#options.number_of_slots,
0.005,#options.lead_limit,
self.link_rate,
self.addrs[i],
self.randbinfile,
False))
def setup_tdma_engines(self):
print ' setup_tdma_engines'
self.tdmaegns = []
for i in range(self.n_devices):
initial_slot = NODES_PC*self._node_id + i
number_of_slots = NETWORK_SIZE
self.tdmaegns.append(precog.tdma_engine(initial_slot,
0.050,#options.slot_interval,
0.010,#options.guard_interval,
number_of_slots,#options.number_of_slots,
0.005,#options.lead_limit,
self.link_rate))
def __init__(self, rx_gain=15, rate=1e6, samp_per_sym=4, args="", freq=915e6, ampl=0.7, tx_gain=15, number_of_slots=10, lead_limit=0.025, initial_slot=15, link_speed=15, slot_interval=0.010, guard_interval=15):
gr.hier_block2.__init__(
self, "TDMA_HIER",
gr.io_signaturev(2, 2, [gr.sizeof_char*1, gr.sizeof_char*1]),
gr.io_signaturev(2, 2, [gr.sizeof_char*1, gr.sizeof_char*1]),
)
##################################################
# Parameters
##################################################
self.rx_gain = rx_gain
self.rate = rate
self.samp_per_sym = samp_per_sym
self.args = args
self.freq = freq
self.ampl = ampl
self.tx_gain = tx_gain
self.number_of_slots = number_of_slots
self.lead_limit = lead_limit
self.initial_slot = initial_slot
self.link_speed = link_speed
self.slot_interval = slot_interval
self.guard_interval = guard_interval
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = rate
##################################################
# Blocks
##################################################
self.usrp_source = uhd.usrp_source(
device_addr=args,
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.usrp_source.set_time_source("external", 0)
self.usrp_source.set_time_unknown_pps(uhd.time_spec())
self.usrp_source.set_samp_rate(samp_rate)
self.usrp_source.set_center_freq(freq, 0)
self.usrp_source.set_gain(rx_gain, 0)
self.usrp_source.set_antenna("TX/RX", 0)
self.usrp_sink = uhd.usrp_sink(
device_addr=args,
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.usrp_sink.set_time_source("external", 0)
self.usrp_sink.set_time_unknown_pps(uhd.time_spec())
self.usrp_sink.set_samp_rate(samp_rate)
self.usrp_sink.set_center_freq(freq, 0)
self.usrp_sink.set_gain(tx_gain, 0)
self.usrp_sink.set_antenna("TX/RX", 0)
self.tdma_engine = precog.tdma_engine(initial_slot,slot_interval,guard_interval,number_of_slots,lead_limit,link_speed)
self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc((ampl, ))
self.gmsk_mod = digital.gmsk_mod(
samples_per_symbol=samp_per_sym,
bt=0.35,
verbose=False,
log=False,
)
self.gmsk_demod = digital.gmsk_demod(
samples_per_symbol=samp_per_sym,
gain_mu=0.175,
mu=0.5,
omega_relative_limit=0.005,
freq_error=0.0,
verbose=False,
log=False,
)
self.extras_pmt_rpc_0 = gr_extras.pmt_rpc(obj=self, result_msg=False)
self.extras_packet_framer_0 = gr_extras.packet_framer(
samples_per_symbol=1,
bits_per_symbol=1,
access_code="",
)
self.extras_packet_deframer_0 = gr_extras.packet_deframer(
access_code="",
threshold=-1,
)
self.burst_gate_0 = precog.burst_gate()
##################################################
# Connections
##################################################
self.connect((self.usrp_source, 0), (self.tdma_engine, 0))
self.connect((self.tdma_engine, 0), (self.extras_packet_framer_0, 0))
self.connect((self.usrp_source, 0), (self.gmsk_demod, 0))
self.connect((self.gmsk_demod, 0), (self.extras_packet_deframer_0, 0))
self.connect((self.extras_packet_framer_0, 0), (self.gmsk_mod, 0))
self.connect((self, 1), (self.tdma_engine, 1))
self.connect((self, 0), (self.tdma_engine, 3))
self.connect((self.extras_packet_deframer_0, 0), (self, 1))
self.connect((self.gmsk_mod, 0), (self.gr_multiply_const_vxx_0, 0))
self.connect((self.gr_multiply_const_vxx_0, 0), (self.burst_gate_0, 0))
self.connect((self.burst_gate_0, 0), (self.usrp_sink, 0))
self.connect((self.extras_packet_deframer_0, 0), (self.tdma_engine, 2))
self.connect((self, 0), (self.extras_pmt_rpc_0, 0))
self.connect((self.tdma_engine, 1), (self, 0))
def __init__(self,
rx_gain=15,
rate=1e6,
samp_per_sym=4,
args="",
freq=915e6,
ampl=0.7,
tx_gain=15,
number_of_slots=10,
lead_limit=0.025,
initial_slot=15,
link_speed=15,
slot_interval=0.010,
guard_interval=15):
gr.hier_block2.__init__(
self,
"TDMA_HIER",
gr.io_signaturev(2, 2, [gr.sizeof_char * 1, gr.sizeof_char * 1]),
gr.io_signaturev(2, 2, [gr.sizeof_char * 1, gr.sizeof_char * 1]),
)
##################################################
# Parameters
##################################################
self.rx_gain = rx_gain
self.rate = rate
self.samp_per_sym = samp_per_sym
self.args = args
self.freq = freq
self.ampl = ampl
self.tx_gain = tx_gain
self.number_of_slots = number_of_slots
self.lead_limit = lead_limit
self.initial_slot = initial_slot
self.link_speed = link_speed
self.slot_interval = slot_interval
self.guard_interval = guard_interval
##################################################
# Variables
##################################################
self.samp_rate = samp_rate = rate
##################################################
# Blocks
##################################################
self.usrp_source = uhd.usrp_source(
device_addr=args,
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.usrp_source.set_time_source("external", 0)
self.usrp_source.set_time_unknown_pps(uhd.time_spec())
self.usrp_source.set_samp_rate(samp_rate)
self.usrp_source.set_center_freq(freq, 0)
self.usrp_source.set_gain(rx_gain, 0)
self.usrp_source.set_antenna("TX/RX", 0)
self.usrp_sink = uhd.usrp_sink(
device_addr=args,
stream_args=uhd.stream_args(
cpu_format="fc32",
channels=range(1),
),
)
self.usrp_sink.set_time_source("external", 0)
self.usrp_sink.set_time_unknown_pps(uhd.time_spec())
self.usrp_sink.set_samp_rate(samp_rate)
self.usrp_sink.set_center_freq(freq, 0)
self.usrp_sink.set_gain(tx_gain, 0)
self.usrp_sink.set_antenna("TX/RX", 0)
self.tdma_engine = precog.tdma_engine(initial_slot, slot_interval,
guard_interval, number_of_slots,
lead_limit, link_speed)
self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc((ampl, ))
self.gmsk_mod = digital.gmsk_mod(
samples_per_symbol=samp_per_sym,
bt=0.35,
verbose=False,
log=False,
)
self.gmsk_demod = digital.gmsk_demod(
samples_per_symbol=samp_per_sym,
gain_mu=0.175,
mu=0.5,
omega_relative_limit=0.005,
freq_error=0.0,
verbose=False,
log=False,
)
self.extras_pmt_rpc_0 = gr_extras.pmt_rpc(obj=self, result_msg=False)
self.extras_packet_framer_0 = gr_extras.packet_framer(
samples_per_symbol=1,
bits_per_symbol=1,
access_code="",
)
self.extras_packet_deframer_0 = gr_extras.packet_deframer(
access_code="",
threshold=-1,
)
self.burst_gate_0 = precog.burst_gate()
##################################################
# Connections
##################################################
self.connect((self.usrp_source, 0), (self.tdma_engine, 0))
self.connect((self.tdma_engine, 0), (self.extras_packet_framer_0, 0))
self.connect((self.usrp_source, 0), (self.gmsk_demod, 0))
self.connect((self.gmsk_demod, 0), (self.extras_packet_deframer_0, 0))
self.connect((self.extras_packet_framer_0, 0), (self.gmsk_mod, 0))
self.connect((self, 1), (self.tdma_engine, 1))
self.connect((self, 0), (self.tdma_engine, 3))
self.connect((self.extras_packet_deframer_0, 0), (self, 1))
self.connect((self.gmsk_mod, 0), (self.gr_multiply_const_vxx_0, 0))
self.connect((self.gr_multiply_const_vxx_0, 0), (self.burst_gate_0, 0))
self.connect((self.burst_gate_0, 0), (self.usrp_sink, 0))
self.connect((self.extras_packet_deframer_0, 0), (self.tdma_engine, 2))
self.connect((self, 0), (self.extras_pmt_rpc_0, 0))
self.connect((self.tdma_engine, 1), (self, 0))
