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fixed #45

This commit is contained in:
Manuel Kamper 2023-03-31 18:38:00 +00:00
parent b6e26feb0f
commit eb2615b623
1 changed files with 39 additions and 38 deletions
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77
NTP.py
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@ -1,38 +1,39 @@
import utime as time import utime as time
import socket import socket
import ustruct as struct import ustruct as struct
import machine import machine
class NTP(): class NTP():
def __init__(self, Logger): def __init__(self, Logger):
self.Logger = Logger self.Logger = Logger
def SetRTCTimeFromNTP(self, host, gmt_offset, auto_summertime): def SetRTCTimeFromNTP(self, host, gmt_offset, auto_summertime):
self.Logger.LogMessage("getting date and time from NTP " + host) self.Logger.LogMessage("getting date and time from NTP " + host)
NTP_DELTA = 2208988800 NTP_DELTA = 2208988800
NTP_QUERY = bytearray(48) NTP_QUERY = bytearray(48)
NTP_QUERY[0] = 0x1B NTP_QUERY[0] = 0x1B
addr = socket.getaddrinfo(host, 123)[0][-1] addr = socket.getaddrinfo(host, 123)[0][-1]
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
try: try:
s.settimeout(5) s.settimeout(5)
res = s.sendto(NTP_QUERY, addr) res = s.sendto(NTP_QUERY, addr)
msg = s.recv(48) msg = s.recv(48)
except Exception as err: except Exception as err:
self.Logger.LogMessage("Error: " + str(err)) self.Logger.LogMessage("Error: " + str(err))
return False return False
finally: finally:
s.close() s.close()
ntp_time = struct.unpack("!I", msg[40:44])[0] + (3600 * gmt_offset) #gmt offset from config ntp_time = struct.unpack("!I", msg[40:44])[0] + (3600 * gmt_offset) #gmt offset from config
tm = time.gmtime(ntp_time - NTP_DELTA) tm = time.gmtime(ntp_time - NTP_DELTA)
if (auto_summertime): if (auto_summertime):
self.Logger.LogMessage("performing auto_summertime adjustment") self.Logger.LogMessage("performing auto_summertime adjustment")
#Time of March change for the current year #Time of March change for the current year
t1 = time.mktime((tm[0],3,(31-(int(5*tm[0]/4+4))%7),1,0,0,0,0)) t1 = time.mktime((tm[0],3,(31-(int(5*tm[0]/4+4))%7),1,0,0,0,0))
#Time of October change for the current year #Time of October change for the current year
t2 = time.mktime((tm[0],10,(31-(int(5*tm[0]/4+1))%7),1,0,0,0,0)) t2 = time.mktime((tm[0],10,(31-(int(5*tm[0]/4+1))%7),1,0,0,0,0))
t = time.mktime((tm[0], tm[1], tm[2], tm[6] + 1, tm[3], tm[4], tm[5], 0)) t = time.mktime((tm[0], tm[1], tm[2], tm[6] + 1, tm[3], tm[4], tm[5], 0))
if t >= t1 and t < t2: if t >= t1 and t < t2:
tm = time.gmtime(tm + 3600) tm = time.gmtime(ntp_time - NTP_DELTA + 3600)
machine.RTC().datetime((tm[0], tm[1], tm[2], tm[6] + 1, tm[3], tm[4], tm[5], 0)) machine.RTC().datetime((tm[0], tm[1], tm[2], tm[6] + 1, tm[3], tm[4], tm[5], 0))
return True return True