class StandAloneRadioA(object):
def __init__(self):
self.kb = KnowledgeBase()
self.lock = Lock()
self.data = NodeAData()
self.packet = Packet('A')
self.radio = RadioAPI()
self.tx_packet_number = 1
self.ack_packet_number = 0
self.goodput = 0
# self.data = []
# for i in range(50):
# self.data.append(0xff)
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_a()
location = self.kb.get_state()['current_location']
data = self.data.pack_data()
tx_packet = self.packet.make_packet(self.tx_packet_number, location, data)
self.radio.transmit(tx_packet)
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=64, timeout=1.0)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(rx_packet)
self.ack_packet_number, self.goodput = self.data.unpack_data(data)
# print "packet_number=%d time_stamp=%f location=%d flags=0x%x" %(packet_number, time_stamp,
# location, flags)
print "goodput for acknowledged packet #%d = %f bits/second" %(self.ack_packet_number, self.goodput)
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def _fsm(self):
self._listen()
time.sleep(0.01)
self._send_packet()
time.sleep(0.01)
self._receive_packet()
time.sleep(0.01)
def run(self):
"""
Run the radio subsystem.
"""
self.radio.startup()
default_radio_profile = location = self.kb.get_state()['default_radio_profile']
power = default_radio_profile['power']
frequency = default_radio_profile['frequency']
data_rate = default_radio_profile['data_rate']
modulation = default_radio_profile['modulation']
self._configure_radio(power, frequency, data_rate, modulation)
# state = "listen"
while True:
self._fsm()
self.lock.acquire()
self.kb.sent_packets.append(self.tx_packet_number)
self.kb.ack_packets.append((self.ack_packet_number, self.goodput))
self.lock.release()
self.tx_packet_number += 1
def shutdown(self):
self.kb.save_kb()
self.radio.shutdown()
class StandAloneRadioB(object):
def __init__(self):
# self.kb = KnowledgeBase()
self.radio = RadioAPI()
self.packet = Packet('B')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
self.rssi_level = 0
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_b()
# location = self.kb.get_state()['current_location']
location = 1
tx_packet = self.packet.make_packet(self.tx_packet_number, location, self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def _receive_packet(self):
"""
Receive packet.
"""
(self.rssi_level, rx_packet) = self.radio.receive(rx_fifo_threshold=63, timeout=None)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(rx_packet)
print "packet_number=%d time_stamp=%f location=%d flags=0x%x" %(packet_number, time_stamp,
location, flags)
return packet_number, loc, flags, data
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def run(self):
"""
Run the radio subsystem.
"""
parser = argparse.ArgumentParser()
# parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument("-f", type=float, default=434e6, metavar='frequency', dest='frequency',
nargs=1, help="Transmit frequency (default: %(default)s)")
parser.add_argument("-m", type=str, default='gfsk', metavar='modulation', dest='modulation',
choices=['gfsk', 'fsk', 'ask'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument("-p" "--power", type=int, default=17, metavar='power', dest='power',
choices=[8, 11, 14, 17],
help="Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r" "--bitrate", type=float, default=4.8e3, metavar='bitrate',
dest='bitrate', help="Set bitrate (default: %(default)s)")
args = parser.parse_args()
frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
self.radio.startup()
self._configure_radio(power, frequency, data_rate, modulation)
time.sleep(1)
# self.i = 0
self.rssi_list = []
# for i in range(100):
# self.rssi_list.append(self.radio.get_rssi_dBm())
for i in range(100):
# while True:
# self.rssi_list.append(self.radio.get_rssi_dBm())
# self._receive_packet()
pkt_num, loc, flags, data = self._receive_packet()
print bin(flags)
self.rssi_list.append(self.rssi_level)
print "received packet"
# self.i += 1
# print "RSSI (raw) : %f RSSI (dBm) : %f" %(rssi, RSSI)
print self.rssi_list
def shutdown(self):
# print "\n\n\n"
# print "%d packets received." %(self.i,)
# print "\n\n\n"
self.radio.shutdown()
class StandAloneRadioA(object):
def __init__(self):
self.radio = RadioAPI()
self.packet = Packet('A')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_a()
# location = self.kb.get_state()['current_location']
location = 1
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=63, timeout=1.0)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(
rx_packet)
print "packet_number=%d time_stamp=%f location=%d flags=0x%x" % (
packet_number, time_stamp, location, flags)
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def run(self):
"""
Run the radio subsystem.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f",
type=float,
default=434e6,
metavar='frequency',
dest='frequency',
help="Transmit frequency (default: %(default)s)")
parser.add_argument(
"-m",
type=str,
default='gfsk',
metavar='modulation',
dest='modulation',
choices=['gfsk', 'fsk', 'ask', 'cw'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument(
"-p",
type=int,
default=17,
metavar='power',
dest='power',
choices=[8, 11, 14, 17],
help=
"Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r",
type=float,
default=4.8e3,
metavar='bitrate',
dest='bitrate',
help="Set bitrate (default: %(default)s)")
parser.add_argument(
"-n",
type=int,
default=1000,
metavar='num_packets',
dest='num_packets',
help="Number of packets to send (default: %(default)s)")
args = parser.parse_args()
frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
num_packets = args.num_packets
self.radio.startup()
self.radio.configure_radio(power, frequency, data_rate, modulation)
tic = time.time()
i = 0
for i in range(num_packets):
self._send_packet()
print "packet sent"
i += 1
toc = time.time()
print "\n\n\n"
print "%d packets sent." % (i, )
print "Total time (seconds) = %f" % (toc - tic, )
def shutdown(self):
self.radio.shutdown()
class StandAloneRadioB(object):
def __init__(self):
self.kb = KnowledgeBase()
self.radio = RadioAPI()
self.packet = Packet('B')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_b()
location = self.kb.get_state()['current_location']
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=63, timeout=None)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(
rx_packet)
print "packet_number=%d time_stamp=%f location=%d flags=0x%x" % (
packet_number, time_stamp, location, flags)
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def run(self):
"""
Run the radio subsystem.
"""
self.radio.startup()
default_radio_profile = location = self.kb.get_state(
)['default_radio_profile']
power = default_radio_profile['power']
frequency = default_radio_profile['frequency']
data_rate = default_radio_profile['data_rate']
modulation = default_radio_profile['modulation']
self._configure_radio(power, frequency, data_rate, modulation)
state = "listen"
while True:
if state == "listen":
self._listen()
state = "receive"
elif state == "receive":
self._receive_packet()
state = "send"
elif state == "send":
self._send_packet()
state = "listen"
else:
print "+++ Melon melon melon +++"
state = "listen"
def shutdown(self):
self.radio.shutdown()
class NodeB(object):
"""
Node B radio.
Node B is the base station or `headquarters` node with which the
AV communicates.
"""
def __init__(self):
self.data = NodeBData()
self.packet = Packet('B')
self.radio = RadioAPI()
self.tx_packet_number = 1
self.rx_packet_list = []
# self.reconfigure = False
# self.receive_stream = False
# self.send_data = False
def run(self):
"""
Run Node B.
This function starts the operation of the Node B radio,
excecuting all the one-time start-up funcitons, before handing
off to the finite state machine.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f", type=float, default=434e6, metavar='frequency', dest='frequency',
nargs=1, help="Transmit frequency (default: %(default)s)")
parser.add_argument("-m", type=str, default='gfsk', metavar='modulation', dest='modulation',
choices=['gfsk', 'fsk', 'ask'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument("-p" "--power", type=int, default=17, metavar='power', dest='power',
choices=[8, 11, 14, 17],
help="Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r" "--bitrate", type=float, default=4.8e3, metavar='bitrate',
dest='bitrate', help="Set bitrate (default: %(default)s)")
args = parser.parse_args()
self.frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
self.radio.startup()
self.radio.configure_radio(power, self.frequency, data_rate, modulation)
self.fsm()
def _receive_packet(self):
"""
Receive packet.
This function blocks until it receives a packet.
"""
(self.rssi_level, rx_packet) = self.radio.receive(rx_fifo_threshold=63, timeout=None)
# rx_packet = self.radio.receive(rx_fifo_threshold=63, timeout=None)
pkt_num, t, loc, flags, data = self.packet.parse_packet(rx_packet)
# print "packet received"
# print pkt_num, loc, flags, data
return pkt_num, loc, flags, data
def _send_packet(self, mode, received_packets = None):
"""
Transmit data.
Parameters
----------
mode : str
Mode of operation, used to create appropriate packet header.
One of {`ack_command` | `send_data`}.
received_packets : int, opt
Number of packets received.
"""
location = 44
if mode == 'ack_command':
self.packet.set_flags_node_b(ack_command = True)
payload = self.data.pack_data(mode)
elif mode == 'send_data':
if received_packets == None:
print "mode is `send_data`, but `received_packets` is `None`"
raise ValueError
self.packet.set_flags_node_b(send_data = True)
payload = self.data.pack_data(mode, received_packets)
else:
print 'error in _send_packet, no mode specified'
raise ValueError
tx_packet = self.packet.make_packet(self.tx_packet_number, location, payload)
self.tx_packet_number += 1
self.radio.transmit(tx_packet)
def fsm(self):
"""
Node B finite state machine.
"""
while True:
pkt_num, loc, flags, data = self._receive_packet()
if (flags & 0x80) == 0x80: # receive stream of packets
print "receiving stream of packets, pkt_num = ", pkt_num
self.rx_packet_list.append(pkt_num)
# print "received data stream packet"
continue
elif (flags & 0x40) == 0x40: # receive data update request
print "received request for data update"
received_packets = len(self.rx_packet_list)
time.sleep(0.5)
self._send_packet('send_data', received_packets)
self.rx_packet_list = []
continue
elif (flags & 0x20) == 0x20: # receive reconfiguration request
print "received request for reconfiguration"
# self.rx_packet_list = []
mod, eirp, bitrate = self.data.unpack_data('reconfig', data)
print mod, eirp, bitrate
time.sleep(1.0)
self._send_packet('ack_command')
self.radio.configure_radio(eirp, self.frequency, bitrate, mod)
print "reconfigured radio with new waveform, waiting for more packets..."
continue
else:
print bin(flags)
print "error in Node B FSM, will reset and continue"
continue
class StandAloneRadioA(object):
def __init__(self):
self.radio = RadioAPI()
self.packet = Packet('A')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_a()
# location = self.kb.get_state()['current_location']
location = 1
tx_packet = self.packet.make_packet(self.tx_packet_number, location, self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=63, timeout=1.0)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(rx_packet)
print "packet_number=%d time_stamp=%f location=%d flags=0x%x" %(packet_number, time_stamp,
location, flags)
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def run(self):
"""
Run the radio subsystem.
"""
parser = argparse.ArgumentParser()
# parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# parser.add_argument("-f", type=float, default=434e6, metavar='frequency', dest='frequency',
# nargs=1, help="Transmit frequency (default: %(default)s)")
parser.add_argument("-f", type=float, default=434e6, metavar='frequency', dest='frequency',
help="Transmit frequency (default: %(default)s)")
parser.add_argument("-m", type=str, default='gfsk', metavar='modulation', dest='modulation',
choices=['gfsk', 'fsk', 'ask', 'cw'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument("-p" "--power", type=int, default=17, metavar='power', dest='power',
choices=[1, 2, 5, 8, 11, 14, 17, 20],
help="Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r" "--bitrate", type=float, default=4.8e3, metavar='bitrate',
dest='bitrate', help="Set bitrate (default: %(default)s)")
parser.add_argument("-s", type=bool, default=False, metavar='run_sweep',
dest='run_sweep', help="Set sweep mode (default: %(default)s)")
parser.add_argument("-i", type=bool, default=False, metavar='interactive',
dest='interactive', help="Use interactive sweep (default: %(default)s)")
args = parser.parse_args()
self.radio.startup()
run_sweep = args.run_sweep
interactive = args.interactive
frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
if run_sweep == False:
self._configure_radio(power, frequency, data_rate, modulation)
state = "listen"
while True:
self._send_packet()
else:
f = 295e6
freqs = []
while f < 930e6:
freqs.append(f)
f += 1e6
for i in freqs:
if modulation == 'cw':
self._configure_radio(power, i, data_rate, modulation)
print "changing to freq: ", i
self._send_packet()
if interactive == True:
s = raw_input('Press enter for next frequency')
self.radio.set_ready_mode()
else:
time.sleep(0.1)
else:
self._configure_radio(power, i, data_rate, modulation)
print "changing to freq: ", i
for j in range(2):
self._send_packet()
# fc, hbsel, fb = freq_utils.carrier_freq(i)
# for j in range(10):
# self.setup_rf(fc, hbsel, fb)
# self.tx_data()
# print "transmitted packet"
# time.sleep(0.01)
# pass
# def sweep(self):
def shutdown(self):
self.radio.shutdown()
class StandAloneRadioA(object):
def __init__(self):
self.radio = RadioAPI()
self.packet = Packet('A')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_a()
# location = self.kb.get_state()['current_location']
location = 1
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def run(self):
"""
Run the radio subsystem.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f",
type=float,
default=434e6,
metavar='frequency',
dest='frequency',
help="Transmit frequency (default: %(default)s)")
parser.add_argument(
"-p",
type=int,
default=17,
metavar='power',
dest='power',
choices=[1, 2, 5, 8, 11, 14, 17, 20],
help=
"Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r",
type=float,
default=4.8e3,
metavar='bitrate',
dest='bitrate',
help="Set bitrate (default: %(default)s)")
args = parser.parse_args()
self.radio.startup()
# frequency = args.frequency
# power = args.power
# data_rate = args.bitrate
modulation = 'cw'
self._configure_radio(args.power, args.frequency, args.bitrate,
modulation)
self._send_packet()
while True:
time.sleep(1)
def shutdown(self):
self.radio.shutdown()
class TxNPackets(object):
"""
Transmitter.
"""
def __init__(self):
self.data = NodeAData()
self.packet = Packet('A')
self.radio = RadioAPI()
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _listen(self):
status = self.radio.listen(rssi_threshold=100, timeout=0.1)
if status == 'clear':
pass
# print "channel clear"
def _receive_packet(self):
"""
Receive packet
"""
rx_packet = self.radio.receive(rx_fifo_threshold=64, timeout=None)
pkt_num, t, loc, flags, data = self.packet.parse_packet(rx_packet)
return pkt_num, loc, flags, data
def _send_packet(self, mode, mod=None, eirp=None, bitrate=None):
"""
Transmit data.
Parameters
----------
mode : str
Mode of operation. Used to create appropriate packet header and payload.
{`send_reconfig_command` | `request_data` | `stream_data`}.
mod : str, opt
Modulation, one of {`fsk` | `gfsk` | `ook` }.
eirp : int, opt
Transmit power, one of { 8 | 11 | 14 | 17 }.
bitrate : float, opt
Radio bitrate, one of {...}
"""
location = 1
if mode == 'stream_data':
print "streaming data packets"
self.packet.set_flags_node_a(send_stream=True)
payload = self.data.pack_data(mode)
elif mode == 'send_reconfig_command':
self.packet.set_flags_node_a(send_command=True)
payload = self.data.pack_data(mode, mod, eirp, bitrate)
elif mode == 'request_data':
self.packet.set_flags_node_a(request_data=True)
payload = self.data.pack_data(mode)
else:
print 'error in _send_packet, no mode specified'
raise ValueError
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
payload)
self.tx_packet_number += 1
self.radio.transmit(tx_packet)
print "packet sent"
def run(self):
"""
Run transmitter.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f",
type=float,
default=434e6,
metavar='frequency',
dest='frequency',
help="Transmit frequency (default: %(default)s)")
parser.add_argument(
"-m",
type=str,
default='gfsk',
metavar='modulation',
dest='modulation',
choices=['gfsk', 'fsk', 'ask'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument(
"-p",
type=int,
default=17,
metavar='power',
dest='power',
choices=[8, 11, 14, 17, 20],
help=
"Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r",
type=float,
default=4.8e3,
metavar='bitrate',
dest='bitrate',
help="Set bitrate (default: %(default)s)")
parser.add_argument(
"-n",
type=int,
default=1,
metavar='num_pkts',
dest='num_pkts',
help="Set number of packets to send (default: %(default)s)")
args = parser.parse_args()
frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
num_pkts = args.num_pkts
self.radio.startup()
self._configure_radio(power, frequency, data_rate, modulation)
for i in range(num_pkts):
self._send_packet('stream_data')
time.sleep(0.5)
def shutdown(self):
# print "\n\n\n\n"
# print "% d packets received" %(self.pkts_received,)
# print self.rx_packet_list
# print "\n\n\n\n"
# time.sleep(1)
self.radio.shutdown()
class StandAloneRadioB(object):
def __init__(self):
# self.kb = KnowledgeBase()
self.radio = RadioAPI()
self.packet = Packet('B')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
self.rssi_level = 0
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_b()
# location = self.kb.get_state()['current_location']
location = 1
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def _receive_packet(self):
"""
Receive packet.
"""
(self.rssi_level, rx_packet) = self.radio.receive(rx_fifo_threshold=63,
timeout=None)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(
rx_packet)
print "packet_number=%d time_stamp=%f location=%d flags=0x%x" % (
packet_number, time_stamp, location, flags)
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def run(self):
"""
Run the radio subsystem.
"""
parser = argparse.ArgumentParser()
# parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
parser.add_argument("-f",
type=float,
default=434e6,
metavar='frequency',
dest='frequency',
nargs=1,
help="Transmit frequency (default: %(default)s)")
parser.add_argument(
"-m",
type=str,
default='gfsk',
metavar='modulation',
dest='modulation',
choices=['gfsk', 'fsk', 'ask'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument(
"-p"
"--power",
type=int,
default=17,
metavar='power',
dest='power',
choices=[8, 11, 14, 17],
help=
"Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r"
"--bitrate",
type=float,
default=4.8e3,
metavar='bitrate',
dest='bitrate',
help="Set bitrate (default: %(default)s)")
args = parser.parse_args()
frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
self.radio.startup()
self._configure_radio(power, frequency, data_rate, modulation)
time.sleep(1)
# self.i = 0
self.rssi_list = []
# for i in range(100):
# self.rssi_list.append(self.radio.get_rssi_dBm())
for i in range(100):
# while True:
# self.rssi_list.append(self.radio.get_rssi_dBm())
self._receive_packet()
self.rssi_list.append(self.rssi_level)
print "received packet"
# self.i += 1
# print "RSSI (raw) : %f RSSI (dBm) : %f" %(rssi, RSSI)
print self.rssi_list
def shutdown(self):
# print "\n\n\n"
# print "%d packets received." %(self.i,)
# print "\n\n\n"
self.radio.shutdown()
class StandAloneRadioB(object):
def __init__(self):
self.kb = KnowledgeBase()
self.data = NodeBData()
self.packet = Packet('B')
self.radio = RadioAPI()
self.tx_packet_number = 1
self.rx_packet_list = []
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_b(ack_packet=True)
location = self.kb.get_state()['current_location']
payload = self.data.pack_data(self.rx_packet_number, self.goodput)
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
payload)
self.tx_packet_number += 1
# print "processing latency = %f" %(time.time()-self.tic,)
self.radio.transmit(tx_packet)
# print "reply transmitted"
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=64, timeout=None)
# self.tic = time.time()
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
self.rx_packet_number, time_stamp, location, flags, data = self.packet.parse_packet(
rx_packet)
# print "packet_number=%d time_stamp=%f location=%d flags=0x%x" %(packet_number, time_stamp,
# location, flags)
del_time = time.time() - time_stamp
self.goodput = 50 * 8 / del_time
print "goodput for packet #%d = %f bits/second" % (
self.rx_packet_number, self.goodput)
self.rx_packet_list.append(self.rx_packet_number)
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def _fsm(self):
self._listen()
time.sleep(0.01)
self._receive_packet()
time.sleep(0.3) # to account for tx->rx processing latency in node_a
self._send_packet()
time.sleep(0.01)
def run(self):
"""
Run the radio subsystem.
"""
self.radio.startup()
default_radio_profile = location = self.kb.get_state(
)['default_radio_profile']
power = default_radio_profile['power']
frequency = default_radio_profile['frequency']
data_rate = default_radio_profile['data_rate']
modulation = default_radio_profile['modulation']
self._configure_radio(power, frequency, data_rate, modulation)
state = "listen"
while True:
self._fsm()
# if state == "listen":
# self._listen()
# state = "receive"
# time.sleep(0.1)
# elif state == "receive":
# self._receive_packet()
# state = "send"
# time.sleep(0.1)
# elif state == "send":
# self._send_packet()
# state = "listen"
# time.sleep(0.1)
# else:
# print "+++ Melon melon melon +++"
# state = "listen"
def shutdown(self):
print "\n\n\n"
print "number of received packets = %d" % (len(self.rx_packet_list), )
print "\n\n\n"
self.radio.shutdown()
class NodeA(object):
"""
Node A radio.
"""
def __init__(self):
self.data = NodeAData()
self.packet = Packet('A')
self.radio = RadioAPI()
self.tx_packet_number = 1
def run(self):
"""
Run Node A.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f",
type=float,
default=434e6,
metavar='frequency',
dest='frequency',
nargs=1,
help="Transmit frequency (default: %(default)s)")
parser.add_argument(
"-m",
type=str,
default='gfsk',
metavar='modulation',
dest='modulation',
choices=['gfsk', 'fsk', 'ask'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument(
"-p"
"--power",
type=int,
default=17,
metavar='power',
dest='power',
choices=[8, 11, 14, 17],
help=
"Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r"
"--bitrate",
type=float,
default=4.8e3,
metavar='bitrate',
dest='bitrate',
help="Set bitrate (default: %(default)s)")
args = parser.parse_args()
self.frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
self.radio.startup()
self.radio.configure_radio(power, self.frequency, data_rate,
modulation)
self.fsm()
def _listen(self):
status = self.radio.listen(rssi_threshold=100, timeout=0.1)
if status == 'clear':
pass
# print "channel clear"
def _receive_packet(self):
"""
Receive packet
"""
rx_packet = self.radio.receive(rx_fifo_threshold=64, timeout=None)
pkt_num, t, loc, flags, data = self.packet.parse_packet(rx_packet)
return pkt_num, loc, flags, data
def _send_packet(self, mode, mod=None, eirp=None, bitrate=None):
"""
Transmit data.
Parameters
----------
mode : str
Mode of operation. Used to create appropriate packet header and payload.
{`send_reconfig_command` | `request_data` | `stream_data`}.
mod : str, opt
Modulation, one of {`fsk` | `gfsk` | `ook` }.
eirp : int, opt
Transmit power, one of { 8 | 11 | 14 | 17 }.
bitrate : float, opt
Radio bitrate, one of {...}
"""
location = 1
if mode == 'stream_data':
print "streaming data packets"
self.packet.set_flags_node_a(send_stream=True)
payload = self.data.pack_data(mode)
elif mode == 'send_reconfig_command':
self.packet.set_flags_node_a(send_command=True)
payload = self.data.pack_data(mode, mod, eirp, bitrate)
elif mode == 'request_data':
self.packet.set_flags_node_a(request_data=True)
payload = self.data.pack_data(mode)
else:
print 'error in _send_packet, no mode specified'
raise ValueError
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
payload)
self.tx_packet_number += 1
self.radio.transmit(tx_packet)
print "packet sent"
def fsm(self):
"""
Node A finite state machine.
"""
index = 1
# while True:
# self._send_packet('stream_data')
# index += 1
while True:
if index % 20 == 0:
print "requesting data"
self._send_packet('request_data')
index += 1
pkt_num, loc, flags, data = self._receive_packet()
packets_received = self.data.unpack_data(data)
print "packets received by Node B", packets_received
time.sleep(1)
elif index == 35:
print "changing waveform"
mod = 'gfsk'
eirp = 11
bitrate = 57.6e3
self._send_packet('send_reconfig_command', mod, eirp, bitrate)
index += 1
pkt_num, loc, flags, data = self._receive_packet()
if (flags & 0x04) == 0x04:
print "node B acknowledged request, changing to new waveform"
time.sleep(1)
self.radio.configure_radio(eirp, self.frequency, bitrate,
mod)
self._send_packet('stream_data')
index += 1
continue
else:
print "node B did not acknowledge request, continuing with current waveform"
continue
else:
self._send_packet('stream_data')
index += 1
class StandAloneRadioA(object):
def __init__(self):
self.kb = KnowledgeBase()
self.lock = Lock()
self.data = NodeAData()
self.packet = Packet('A')
self.radio = RadioAPI()
self.tx_packet_number = 1
self.ack_packet_number = 0
self.goodput = 0
# self.data = []
# for i in range(50):
# self.data.append(0xff)
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_a()
location = self.kb.get_state()['current_location']
data = self.data.pack_data()
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
data)
self.radio.transmit(tx_packet)
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=64, timeout=1.0)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(
rx_packet)
self.ack_packet_number, self.goodput = self.data.unpack_data(data)
# print "packet_number=%d time_stamp=%f location=%d flags=0x%x" %(packet_number, time_stamp,
# location, flags)
print "goodput for acknowledged packet #%d = %f bits/second" % (
self.ack_packet_number, self.goodput)
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def _fsm(self):
self._listen()
time.sleep(0.01)
self._send_packet()
time.sleep(0.01)
self._receive_packet()
time.sleep(0.01)
def run(self):
"""
Run the radio subsystem.
"""
self.radio.startup()
default_radio_profile = location = self.kb.get_state(
)['default_radio_profile']
power = default_radio_profile['power']
frequency = default_radio_profile['frequency']
data_rate = default_radio_profile['data_rate']
modulation = default_radio_profile['modulation']
self._configure_radio(power, frequency, data_rate, modulation)
# state = "listen"
while True:
self._fsm()
self.lock.acquire()
self.kb.sent_packets.append(self.tx_packet_number)
self.kb.ack_packets.append((self.ack_packet_number, self.goodput))
self.lock.release()
self.tx_packet_number += 1
def shutdown(self):
self.kb.save_kb()
self.radio.shutdown()
class StandAloneRadioB(object):
def __init__(self):
self.kb = KnowledgeBase()
self.radio = RadioAPI()
self.packet = Packet('B')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_b()
location = self.kb.get_state()['current_location']
tx_packet = self.packet.make_packet(self.tx_packet_number, location, self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=63, timeout=None)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(rx_packet)
print "packet_number=%d time_stamp=%f location=%d flags=0x%x" %(packet_number, time_stamp,
location, flags)
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def run(self):
"""
Run the radio subsystem.
"""
self.radio.startup()
default_radio_profile = location = self.kb.get_state()['default_radio_profile']
power = default_radio_profile['power']
frequency = default_radio_profile['frequency']
data_rate = default_radio_profile['data_rate']
modulation = default_radio_profile['modulation']
self._configure_radio(power, frequency, data_rate, modulation)
state = "listen"
while True:
if state == "listen":
self._listen()
state = "receive"
elif state == "receive":
self._receive_packet()
state = "send"
elif state == "send":
self._send_packet()
state = "listen"
else:
print "+++ Melon melon melon +++"
state = "listen"
def shutdown(self):
self.radio.shutdown()
class TxOnePacket(object):
"""
Transmitter.
"""
def __init__(self):
self.data = NodeAData()
self.packet = Packet('A')
self.radio = RadioAPI()
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _listen(self):
status = self.radio.listen(rssi_threshold=100, timeout=0.1)
if status == 'clear':
pass
# print "channel clear"
def _receive_packet(self):
"""
Receive packet
"""
rx_packet = self.radio.receive(rx_fifo_threshold=64, timeout=None)
pkt_num, t, loc, flags, data = self.packet.parse_packet(rx_packet)
return pkt_num, loc, flags, data
def _send_packet(self, mode, mod=None, eirp=None, bitrate=None):
"""
Transmit data.
Parameters
----------
mode : str
Mode of operation. Used to create appropriate packet header and payload.
{`send_reconfig_command` | `request_data` | `stream_data`}.
mod : str, opt
Modulation, one of {`fsk` | `gfsk` | `ook` }.
eirp : int, opt
Transmit power, one of { 8 | 11 | 14 | 17 }.
bitrate : float, opt
Radio bitrate, one of {...}
"""
location = 1
if mode == 'stream_data':
print "streaming data packets"
self.packet.set_flags_node_a(send_stream=True)
payload = self.data.pack_data(mode)
elif mode == 'send_reconfig_command':
self.packet.set_flags_node_a(send_command=True)
payload = self.data.pack_data(mode, mod, eirp, bitrate)
elif mode == 'request_data':
self.packet.set_flags_node_a(request_data=True)
payload = self.data.pack_data(mode)
else:
print 'error in _send_packet, no mode specified'
raise ValueError
tx_packet = self.packet.make_packet(self.tx_packet_number, location, payload)
self.tx_packet_number += 1
self.radio.transmit(tx_packet)
print "packet sent"
def run(self):
"""
Run transmitter.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f", type=float, default=434e6, metavar='frequency', dest='frequency',
nargs=1, help="Transmit frequency (default: %(default)s)")
parser.add_argument("-m", type=str, default='gfsk', metavar='modulation', dest='modulation',
choices=['gfsk', 'fsk', 'ask'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument("-p", type=int, default=17, metavar='power', dest='power',
choices=[8, 11, 14, 17, 20],
help="Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r", type=float, default=4.8e3, metavar='bitrate',
dest='bitrate', help="Set bitrate (default: %(default)s)")
parser.add_argument("-n", type=int, default=1, metavar='num_pkts',
dest='num_pkts', help="Set number of packets to send (default: %(default)s)")
args = parser.parse_args()
frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
num_pkts = args.num_pkts
self.radio.startup()
self._configure_radio(power, frequency, data_rate, modulation)
for i in range(num_pkts):
self._send_packet('stream_data')
class RxOnePacket(object):
"""
Receiver.
"""
def __init__(self):
self.data = NodeBData()
self.packet = Packet('B')
self.radio = RadioAPI()
self.tx_packet_number = 1
self.rx_packet_list = []
self.rssi_level = 0
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _receive_packet(self):
"""
Receive packet.
This function blocks until it receives a packet.
"""
(self.rssi_level, rx_packet) = self.radio.receive(rx_fifo_threshold=64, timeout=None)
pkt_num, t, loc, flags, data = self.packet.parse_packet(rx_packet)
return pkt_num, loc, flags, data
def _send_packet(self, mode, received_packets = None):
"""
Transmit data.
Parameters
----------
mode : str
Mode of operation, used to create appropriate packet header.
One of {`ack_command` | `send_data`}.
received_packets : int, opt
Number of packets received.
"""
location = 44
if mode == 'ack_command':
self.packet.set_flags_node_b(ack_command = True)
payload = self.data.pack_data(mode)
elif mode == 'send_data':
if received_packets == None:
print "mode is `send_data`, but `received_packets` is `None`"
raise ValueError
self.packet.set_flags_node_b(send_data = True)
payload = self.data.pack_data(mode, received_packets)
else:
print 'error in _send_packet, no mode specified'
raise ValueError
tx_packet = self.packet.make_packet(self.tx_packet_number, location, payload)
self.tx_packet_number += 1
self.radio.transmit(tx_packet)
def run(self):
"""
Run receiver.
This function starts the operation of the Node B radio,
excecuting all the one-time start-up funcitons, before handing
off to the finite state machine.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f", type=float, default=434e6, metavar='frequency', dest='frequency',
nargs=1, help="Transmit frequency (default: %(default)s)")
parser.add_argument("-m", type=str, default='gfsk', metavar='modulation', dest='modulation',
choices=['gfsk', 'fsk', 'ask'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument("-p" "--power", type=int, default=17, metavar='power', dest='power',
choices=[8, 11, 14, 17],
help="Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r" "--bitrate", type=float, default=4.8e3, metavar='bitrate',
dest='bitrate', help="Set bitrate (default: %(default)s)")
args = parser.parse_args()
self.frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
self.radio.startup()
self.radio.configure_radio(power, self.frequency, data_rate, modulation)
pkt_num, loc, flags, data = self._receive_packet()
print "packet number %d received" %(pkt_num)
def shutdown(self):
self.radio.shutdown()
class RxOnePacket(object):
"""
Receiver.
"""
def __init__(self):
self.data = NodeBData()
self.packet = Packet('B')
self.radio = RadioAPI()
self.tx_packet_number = 1
self.rx_packet_list = []
self.rssi_level = 0
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _receive_packet(self):
"""
Receive packet.
This function blocks until it receives a packet.
"""
(self.rssi_level, rx_packet) = self.radio.receive(rx_fifo_threshold=64,
timeout=None)
pkt_num, t, loc, flags, data = self.packet.parse_packet(rx_packet)
return pkt_num, loc, flags, data
def _send_packet(self, mode, received_packets=None):
"""
Transmit data.
Parameters
----------
mode : str
Mode of operation, used to create appropriate packet header.
One of {`ack_command` | `send_data`}.
received_packets : int, opt
Number of packets received.
"""
location = 44
if mode == 'ack_command':
self.packet.set_flags_node_b(ack_command=True)
payload = self.data.pack_data(mode)
elif mode == 'send_data':
if received_packets == None:
print "mode is `send_data`, but `received_packets` is `None`"
raise ValueError
self.packet.set_flags_node_b(send_data=True)
payload = self.data.pack_data(mode, received_packets)
else:
print 'error in _send_packet, no mode specified'
raise ValueError
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
payload)
self.tx_packet_number += 1
self.radio.transmit(tx_packet)
def run(self):
"""
Run receiver.
This function starts the operation of the Node B radio,
excecuting all the one-time start-up funcitons, before handing
off to the finite state machine.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f",
type=float,
default=434e6,
metavar='frequency',
dest='frequency',
nargs=1,
help="Transmit frequency (default: %(default)s)")
parser.add_argument(
"-m",
type=str,
default='gfsk',
metavar='modulation',
dest='modulation',
choices=['gfsk', 'fsk', 'ask'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument(
"-p"
"--power",
type=int,
default=17,
metavar='power',
dest='power',
choices=[8, 11, 14, 17],
help=
"Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r"
"--bitrate",
type=float,
default=4.8e3,
metavar='bitrate',
dest='bitrate',
help="Set bitrate (default: %(default)s)")
args = parser.parse_args()
self.frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
self.radio.startup()
self.radio.configure_radio(power, self.frequency, data_rate,
modulation)
pkt_num, loc, flags, data = self._receive_packet()
print "packet number %d received" % (pkt_num)
def shutdown(self):
self.radio.shutdown()
class StandAloneRadioA(object):
def __init__(self):
self.radio = RadioAPI()
self.packet = Packet('A')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_a()
# location = self.kb.get_state()['current_location']
location = 1
tx_packet = self.packet.make_packet(self.tx_packet_number, location, self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def run(self):
"""
Run the radio subsystem.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f", type=float, default=434e6, metavar='frequency', dest='frequency',
help="Transmit frequency (default: %(default)s)")
parser.add_argument("-p", type=int, default=17, metavar='power', dest='power',
choices=[1, 2, 5, 8, 11, 14, 17, 20],
help="Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r", type=float, default=4.8e3, metavar='bitrate',
dest='bitrate', help="Set bitrate (default: %(default)s)")
args = parser.parse_args()
self.radio.startup()
# frequency = args.frequency
# power = args.power
# data_rate = args.bitrate
modulation = 'cw'
self._configure_radio(args.power, args.frequency, args.bitrate, modulation)
self._send_packet()
while True:
time.sleep(1)
def shutdown(self):
self.radio.shutdown()
class Avoider(object):
def __init__(self):
self.radio = RadioAPI()
self.packet = Packet('A')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_a()
# location = self.kb.get_state()['current_location']
location = 1
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=63, timeout=1.0)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(
rx_packet)
print "packet_number=%d time_stamp=%f location=%d flags=0x%x" % (
packet_number, time_stamp, location, flags)
def _listen(self, threshold):
"""
Listen before talk.
"""
status = self.radio.listen(threshold, timeout=1.0)
# if status == 'clear':
# print "channel clear"
return status
def run(self):
"""
Run the radio subsystem.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f",
type=float,
default=432e6,
metavar='frequency',
dest='frequency',
help="Transmit frequency (default: %(default)s)")
parser.add_argument(
"-m",
type=str,
default='gfsk',
metavar='modulation',
dest='modulation',
choices=['gfsk', 'fsk', 'ask', 'cw'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument(
"-p",
type=int,
default=17,
metavar='power',
dest='power',
choices=[1, 2, 5, 8, 11, 14, 17, 20],
help=
"Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r",
type=float,
default=4.8e3,
metavar='bitrate',
dest='bitrate',
help="Set bitrate (default: %(default)s)")
parser.add_argument("-t",
type=int,
default=150,
metavar='threshold',
dest='threshold',
help="Set rssi threshold (default: %(default)s)")
parser.add_argument(
"-d",
type=str,
default="data_file.txt",
metavar='data_file',
dest='data_file',
help="Data file to store results (default: %(default)s)")
print "parsing args"
args = parser.parse_args()
frequency = args.frequency
modulation = args.modulation
power = args.power
bitrate = args.bitrate
threshold = args.threshold
data_file = args.data_file
print "data_file", data_file
f = open(data_file, 'r+')
print "opened file"
l = f.readlines()
if l == []:
self.first_time = True
else:
self.first_time = False
jump_freq = float(l[0].strip('\n'))
f.close()
self.radio.startup()
self.radio.configure_radio(power, frequency, bitrate, modulation)
hop = False
while True:
status = self._listen(threshold)
if self.first_time == True:
if status == 'clear':
if hop == True:
self.toc = time.time()
print "arrived at final destination, time to find new channel: ", self.toc - self.tic
hop = False
s = str(frequency) + "\n"
f.write(s)
f.close()
self._send_packet()
else:
if hop == False:
print "reconfiguring radio, starting timer"
hop = True
self.tic = time.time()
frequency += 2e6
print "changing to new center frequency: %f" % (
frequency, )
self.radio.configure_radio(power, frequency, bitrate,
modulation)
else:
if status == 'clear':
if hop == True:
self.toc = time.time()
print "arrived at final destination, time to find new channel: ", self.toc - self.tic
hop = False
self._send_packet()
else:
if hop == False:
print "reconfiguring radio, starting timer"
hop = True
self.tic = time.time()
frequency = jump_freq
print "changing to new center frequency: %f" % (
frequency, )
self.radio.configure_radio(power, frequency, bitrate,
modulation)
def shutdown(self):
self.radio.shutdown()
class NodeB(object):
"""
Node B radio.
Node B is the base station or `headquarters` node with which the
AV communicates.
"""
def __init__(self):
self.data = NodeBData()
self.packet = Packet('B')
self.radio = RadioAPI()
self.tx_packet_number = 1
self.rx_packet_list = []
# self.reconfigure = False
# self.receive_stream = False
# self.send_data = False
def run(self):
"""
Run Node B.
This function starts the operation of the Node B radio,
excecuting all the one-time start-up funcitons, before handing
off to the finite state machine.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f",
type=float,
default=434e6,
metavar='frequency',
dest='frequency',
nargs=1,
help="Transmit frequency (default: %(default)s)")
parser.add_argument(
"-m",
type=str,
default='gfsk',
metavar='modulation',
dest='modulation',
choices=['gfsk', 'fsk', 'ask'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument(
"-p"
"--power",
type=int,
default=17,
metavar='power',
dest='power',
choices=[8, 11, 14, 17],
help=
"Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r"
"--bitrate",
type=float,
default=4.8e3,
metavar='bitrate',
dest='bitrate',
help="Set bitrate (default: %(default)s)")
args = parser.parse_args()
self.frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
self.radio.startup()
self.radio.configure_radio(power, self.frequency, data_rate,
modulation)
self.fsm()
def _receive_packet(self):
"""
Receive packet.
This function blocks until it receives a packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=64, timeout=None)
pkt_num, t, loc, flags, data = self.packet.parse_packet(rx_packet)
# print "packet received"
# print pkt_num, loc, flags, data
return pkt_num, loc, flags, data
def _send_packet(self, mode, received_packets=None):
"""
Transmit data.
Parameters
----------
mode : str
Mode of operation, used to create appropriate packet header.
One of {`ack_command` | `send_data`}.
received_packets : int, opt
Number of packets received.
"""
location = 44
if mode == 'ack_command':
self.packet.set_flags_node_b(ack_command=True)
payload = self.data.pack_data(mode)
elif mode == 'send_data':
if received_packets == None:
print "mode is `send_data`, but `received_packets` is `None`"
raise ValueError
self.packet.set_flags_node_b(send_data=True)
payload = self.data.pack_data(mode, received_packets)
else:
print 'error in _send_packet, no mode specified'
raise ValueError
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
payload)
self.tx_packet_number += 1
self.radio.transmit(tx_packet)
def fsm(self):
"""
Node B finite state machine.
"""
while True:
pkt_num, loc, flags, data = self._receive_packet()
if (flags & 0x80) == 0x80: # receive stream of packets
print "receiving stream of packets, pkt_num = ", pkt_num
self.rx_packet_list.append(pkt_num)
# print "received data stream packet"
continue
elif (flags & 0x40) == 0x40: # receive data update request
print "received request for data update"
received_packets = len(self.rx_packet_list)
time.sleep(0.5)
self._send_packet('send_data', received_packets)
self.rx_packet_list = []
continue
elif (flags & 0x20) == 0x20: # receive reconfiguration request
print "received request for reconfiguration"
# self.rx_packet_list = []
mod, eirp, bitrate = self.data.unpack_data('reconfig', data)
print mod, eirp, bitrate
time.sleep(1.0)
self._send_packet('ack_command')
self.radio.configure_radio(eirp, self.frequency, bitrate, mod)
print "reconfigured radio with new waveform, waiting for more packets..."
continue
else:
print bin(flags)
print "error in Node B FSM, will reset and continue"
continue
class StandAloneRadioA(object):
def __init__(self):
self.radio = RadioAPI()
self.packet = Packet('A')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_a()
# location = self.kb.get_state()['current_location']
location = 1
tx_packet = self.packet.make_packet(self.tx_packet_number, location,
self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=63, timeout=1.0)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(
rx_packet)
print "packet_number=%d time_stamp=%f location=%d flags=0x%x" % (
packet_number, time_stamp, location, flags)
def _listen(self):
"""
Listen before talk.
"""
status = self.radio.listen(rssi_threshold=100, timeout=1.0)
if status == 'clear':
print "channel clear"
def run(self):
"""
Run the radio subsystem.
"""
parser = argparse.ArgumentParser()
# parser = argparse.ArgumentParser(formatter_class=argparse.ArgumentDefaultsHelpFormatter)
# parser.add_argument("-f", type=float, default=434e6, metavar='frequency', dest='frequency',
# nargs=1, help="Transmit frequency (default: %(default)s)")
parser.add_argument("-f",
type=float,
default=434e6,
metavar='frequency',
dest='frequency',
help="Transmit frequency (default: %(default)s)")
parser.add_argument(
"-m",
type=str,
default='gfsk',
metavar='modulation',
dest='modulation',
choices=['gfsk', 'fsk', 'ask', 'cw'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument(
"-p"
"--power",
type=int,
default=17,
metavar='power',
dest='power',
choices=[1, 2, 5, 8, 11, 14, 17, 20],
help=
"Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r"
"--bitrate",
type=float,
default=4.8e3,
metavar='bitrate',
dest='bitrate',
help="Set bitrate (default: %(default)s)")
parser.add_argument("-s",
type=bool,
default=False,
metavar='run_sweep',
dest='run_sweep',
help="Set sweep mode (default: %(default)s)")
parser.add_argument(
"-i",
type=bool,
default=False,
metavar='interactive',
dest='interactive',
help="Use interactive sweep (default: %(default)s)")
args = parser.parse_args()
self.radio.startup()
run_sweep = args.run_sweep
interactive = args.interactive
frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
if run_sweep == False:
self._configure_radio(power, frequency, data_rate, modulation)
state = "listen"
while True:
self._send_packet()
else:
f = 295e6
freqs = []
while f < 930e6:
freqs.append(f)
f += 1e6
for i in freqs:
if modulation == 'cw':
self._configure_radio(power, i, data_rate, modulation)
print "changing to freq: ", i
self._send_packet()
if interactive == True:
s = raw_input('Press enter for next frequency')
self.radio.set_ready_mode()
else:
time.sleep(0.1)
else:
self._configure_radio(power, i, data_rate, modulation)
print "changing to freq: ", i
for j in range(2):
self._send_packet()
# fc, hbsel, fb = freq_utils.carrier_freq(i)
# for j in range(10):
# self.setup_rf(fc, hbsel, fb)
# self.tx_data()
# print "transmitted packet"
# time.sleep(0.01)
# pass
# def sweep(self):
def shutdown(self):
self.radio.shutdown()
class Avoider(object):
def __init__(self):
self.radio = RadioAPI()
self.packet = Packet('A')
self.data = []
for i in range(50):
self.data.append(0xff)
self.tx_packet_number = 1
def _configure_radio(self, power, frequency, data_rate, modulation):
"""
Configure radio for operation.
"""
self.radio.configure_radio(power, frequency, data_rate, modulation)
def _send_packet(self):
"""
Transmit packet.
"""
self.packet.set_flags_node_a()
# location = self.kb.get_state()['current_location']
location = 1
tx_packet = self.packet.make_packet(self.tx_packet_number, location, self.data)
self.radio.transmit(tx_packet)
self.tx_packet_number += 1
def _receive_packet(self):
"""
Receive packet.
"""
rx_packet = self.radio.receive(rx_fifo_threshold=63, timeout=1.0)
if rx_packet == []: # this occurs when timeout has been exceeded
return
else:
packet_number, time_stamp, location, flags, data = self.packet.parse_packet(rx_packet)
print "packet_number=%d time_stamp=%f location=%d flags=0x%x" %(packet_number, time_stamp,
location, flags)
def _listen(self, threshold):
"""
Listen before talk.
"""
status = self.radio.listen(threshold, timeout=1.0)
# if status == 'clear':
# print "channel clear"
return status
def run(self):
"""
Run the radio subsystem.
"""
parser = argparse.ArgumentParser()
parser.add_argument("-f", type=float, default=432e6, metavar='frequency', dest='frequency',
help="Transmit frequency (default: %(default)s)")
parser.add_argument("-m", type=str, default='gfsk', metavar='modulation', dest='modulation',
choices=['gfsk', 'fsk', 'ask', 'cw'],
help="Select modulation from [%(choices)s] (default: %(default)s)")
parser.add_argument("-p", type=int, default=17, metavar='power', dest='power',
choices=[1, 2, 5, 8, 11, 14, 17, 20],
help="Select transmit power from [%(choices)s] (default: %(default)s)")
parser.add_argument("-r", type=float, default=4.8e3, metavar='bitrate',
dest='bitrate', help="Set bitrate (default: %(default)s)")
parser.add_argument("-t", type=int, default=150, metavar='threshold',
dest='threshold', help="Set rssi threshold (default: %(default)s)")
args = parser.parse_args()
frequency = args.frequency
modulation = args.modulation
power = args.power
data_rate = args.bitrate
threshold = args.threshold
self.radio.startup()
self.radio.configure_radio(power, frequency, data_rate, modulation)
hop = False
while True:
status = self._listen(threshold)
if status == 'clear':
if hop == True:
self.toc = time.time()
print "arrived at final destination, time to find new channel: ", self.toc - self.tic
hop = False
self._send_packet()
else:
if hop == False:
print "reconfiguring radio, starting timer"
hop = True
self.tic = time.time()
frequency += 2e6
print "changing to new center frequency: %f" %(frequency,)
self.radio.configure_radio(power, frequency, data_rate, modulation)
def shutdown(self):
self.radio.shutdown()
