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@verebes1
Forked from aallan/picow_ntp_client.py
Created May 22, 2023 17:28
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import network
import socket
import time
import struct
from machine import Pin
NTP_DELTA = 2208988800
host = "pool.ntp.org"
led = Pin("LED", Pin.OUT)
ssid = 'A NETWORK'
password = 'A PASSWORD'
def set_time():
NTP_QUERY = bytearray(48)
NTP_QUERY[0] = 0x1B
addr = socket.getaddrinfo(host, 123)[0][-1]
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try:
s.settimeout(1)
res = s.sendto(NTP_QUERY, addr)
msg = s.recv(48)
finally:
s.close()
val = struct.unpack("!I", msg[40:44])[0]
t = val - NTP_DELTA
tm = time.gmtime(t)
machine.RTC().datetime((tm[0], tm[1], tm[2], tm[6] + 1, tm[3], tm[4], tm[5], 0))
wlan = network.WLAN(network.STA_IF)
wlan.active(True)
wlan.connect(ssid, password)
max_wait = 10
while max_wait > 0:
if wlan.status() < 0 or wlan.status() >= 3:
break
max_wait -= 1
print('waiting for connection...')
time.sleep(1)
if wlan.status() != 3:
raise RuntimeError('network connection failed')
else:
print('connected')
status = wlan.ifconfig()
print( 'ip = ' + status[0] )
led.on()
set_time()
print(time.localtime())
led.off()
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