2021-02-11 17:36:40 -05:00
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import wifi
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import socketpool
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import struct
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import time
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# connect to wifi
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print("Connecting to Wifi")
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wifi.radio.connect("mySSID", "myPASS")
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pool = socketpool.SocketPool(wifi.radio)
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# make socket
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print("Creating socket")
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2021-03-15 09:57:36 -04:00
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sock = pool.socket(pool.AF_INET, pool.SOCK_DGRAM)
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2021-02-11 17:36:40 -05:00
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# Fill packet
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packet = bytearray(48)
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packet[0] = 0b00100011 # Not leap second, NTP version 4, Client mode
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NTP_TO_UNIX_EPOCH = 2208988800 # 1970-01-01 00:00:00
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print("Sending packet")
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sock.sendto(packet, ("pool.ntp.org", 123))
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size, address = sock.recvfrom_into(packet)
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print("Received packet")
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seconds = struct.unpack_from("!I", packet, offset=len(packet) - 8)[0]
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print("Address:", address)
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print("Time:", time.localtime(seconds - NTP_TO_UNIX_EPOCH))
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