kopia lustrzana https://github.com/micropython/micropython
49 wiersze
1.2 KiB
Python
49 wiersze
1.2 KiB
Python
import utime
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try:
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import usocket as socket
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except:
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import socket
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try:
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import ustruct as struct
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except:
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import struct
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# The NTP host can be configured at runtime by doing: ntptime.host = 'myhost.org'
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host = "pool.ntp.org"
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def time():
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NTP_QUERY = bytearray(48)
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NTP_QUERY[0] = 0x1B
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addr = socket.getaddrinfo(host, 123)[0][-1]
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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try:
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s.settimeout(1)
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res = s.sendto(NTP_QUERY, addr)
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msg = s.recv(48)
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finally:
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s.close()
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val = struct.unpack("!I", msg[40:44])[0]
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EPOCH_YEAR = utime.gmtime(0)[0]
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if EPOCH_YEAR == 2000:
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# (date(2000, 1, 1) - date(1900, 1, 1)).days * 24*60*60
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NTP_DELTA = 3155673600
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elif EPOCH_YEAR == 1970:
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# (date(1970, 1, 1) - date(1900, 1, 1)).days * 24*60*60
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NTP_DELTA = 2208988800
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else:
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raise Exception("Unsupported epoch: {}".format(EPOCH_YEAR))
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return val - NTP_DELTA
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# There's currently no timezone support in MicroPython, and the RTC is set in UTC time.
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def settime():
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t = time()
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import machine
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tm = utime.gmtime(t)
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machine.RTC().datetime((tm[0], tm[1], tm[2], tm[6] + 1, tm[3], tm[4], tm[5], 0))
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