def lora_unpacking(packet_data):
packet_data.pos = 56
crc = packet_data.read(8)
packet_data.pos = 0
if crc == crc_func(packet_data.read(56)):
packet_data.pos = 0
else:
pass
def on_message(mqttc, obj, msg):
curtime = datetime.datetime.now()
strcurtime = curtime.strftime("%Y-%m-%d %H:%M:%S")
logger.info(strcurtime + ": " + msg.topic + " " + str(msg.qos) + " " +
str(msg.payload))
payload_length = len(msg.payload)
un_int = struct.unpack(str(payload_length) + 'B', msg.payload)
logger.info('*********---NEW MESSAGE----*********')
print(5 * '\n')
print(2 * '*********---NEW MESSAGE----*********')
logger.info(payload_length)
print('-------payload_length------')
print(payload_length)
logger.info(un_int)
print(un_int)
uints = list(un_int)
print(uints)
if uints[payload_length - 1] == crc_func(uints[:payload_length - 1]):
logger.info('CRC checked!')
if payload_length == 5:
lora_unpacking_ack(uints)
elif payload_length == 8:
print('----msg.payload------')
print(msg.payload)
print(type(msg.payload))
print('--------receive-time-------')
print(datetime.datetime.now())
# packet_data = BitStream('0x4001004751E47533')
# '{:0>2x}'.format(1) #dic to hex,append 0
packet_data = BitStream(msg.payload)
logger.info('--------packet_data--------')
logger.info(packet_data)
logger.info(len(packet_data))
print('-----packet-data------')
print(packet_data)
logger.info('--------packet_data.bin--------')
logger.info(packet_data.bin)
print(packet_data.bin)
logger.info(len(packet_data.bin))
realtime_data = lora_unpacking_realtime_data(packet_data)
save_realtime_data(realtime_data)
else:
logger.debug('bytes unknown!')
else:
logger.error('CRC check fail!')
def on_message(mqttc, obj, msg):
curtime = datetime.datetime.now()
strcurtime = curtime.strftime("%Y-%m-%d %H:%M:%S")
logger.info(strcurtime + ": " + msg.topic + " " + str(msg.qos) + " " +
str(msg.payload))
payload_length = len(msg.payload)
un_int = struct.unpack(str(payload_length) + 'B', msg.payload)
logger.info('-------units-----')
logger.info(un_int)
uints = list(un_int)
if uints[payload_length - 1] == crc_func(uints[:payload_length - 1]):
logger.info('CRC checked!')
if payload_length == 5:
lora_unpacking_ack(uints)
elif payload_length == 8:
b = binascii.b2a_hex(msg.payload)
# packet_data = BitStream('0x4001004751E47533')
# '{:0>2x}'.format(1) #dic to hex,append 0
packet_data = BitStream('0x' + b)
logger.info('--------packet_data--------')
logger.info(packet_data)
logger.info('--------packet_data.bin--------')
logger.info(packet_data.bin)
realtime_data = lora_unpacking_realtime_data(packet_data)
# save_realtime_data(realtime_data)
elif payload_length == 16:
b = binascii.b2a_hex(msg.payload)
# packet_data = BitStream('0x4001004751E47533')
# '{:0>2x}'.format(1) #dic to hex,append 0
packet_data = BitStream('0x' + b)
logger.info('--------packet_data--------')
logger.info(packet_data)
logger.info('--------packet_data.bin--------')
logger.info(packet_data.bin)
realtime_data_6 = lora_unpacking_realtime_6ch(packet_data)
save_realtime_data_6ch(realtime_data_6)
else:
logger.info('bytes unknown!')
else:
logger.error('CRC check fail!')
def return_crc(str_bin):
print('----str_bin------')
print(str_bin)
print('----len_str_bin------')
print(len(str_bin))
units = []
for i in range(int(len(str_bin) / 8)):
units.append(str_bin.read(8).uint)
print('units', units)
crc = crc_func(units)
print('-------send-hex------')
print(str_bin + hex(crc))
return units, crc