Pycom FiPy, Руководство пользователя, Страница: 216 / 496

self.txnb = 0
self.stat_alarm = None
self.pull_alarm = None
self.uplink_alarm = None
self.udp_lock = _thread.allocate_lock()
self.lora = None
self.lora_sock = None
def start (self) :
# Change WiFi to STA mode and connect
self.wlan = WLAN(mode=WLAN.STA)
self._connect_to_wifi()
# Get a time Sync
self.rtc = machine.RTC()
self.rtc.ntp_sync(self.ntp, update_period=self.ntp_period)
# Get the server IP and create an UDP socket
self.server_ip = socket.getaddrinfo(self.server, self.port)[ 0 ][ -1 ]
self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UD
P)
self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1 )
self.sock.setblocking( False )
# Push the first time immediately
self._push_data(self._make_stat_packet())
# Create the alarms
self.stat_alarm = Timer.Alarm(handler= lambda t: self._push_data(self._make_sta
t_packet()), s= 60 , periodic= True )
self.pull_alarm = Timer.Alarm(handler= lambda u: self._pull_data(), s= 25 , perio
dic= True )
# Start the UDP receive thread
_thread.start_new_thread(self._udp_thread, ())
# Initialize LoRa in LORA mode
self.lora = LoRa(mode=LoRa.LORA, frequency=self.frequency, bandwidth=LoRa.BW_1
25KHZ, sf=self.sf,
preamble= 8 , coding_rate=LoRa.CODING_4_5, tx_iq= True )
# Create a raw LoRa socket
self.lora_sock = socket.socket(socket.AF_LORA, socket.SOCK_RAW)
self.lora_sock.setblocking( False )
self.lora_tx_done = False
self.lora.callback(trigger=(LoRa.RX_PACKET_EVENT | LoRa.TX_PACKET_EVENT), hand
ler=self._lora_cb)
def stop (self) :
# TODO: Check how to stop the NTP sync
4.3.6 LoRaWAN Nano-Gateway
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