Syncing RTC To Network Time

[rdixey]

@santorcuato I used it as a function in the boot.py of my LoPy. I had to set a delay to allow for the round trip to pool.ntp.org or else the function completed before ntp_sync and RTC remained = Unix Epoch . When I ping pool.ntp.org from my LAN the longest round trip was 630ms so I set sleep at 750ms. Less than that was too short.

def setRTCLocalTime():
    rtc = machine.RTC()
    rtc.ntp_sync("pool.ntp.org")
    utime.sleep_ms(750)
    print('\nRTC Set from NTP to UTC:', rtc.now())
    utime.timezone(-18000)
    print('Adjusted from UTC to EST timezone', utime.localtime(), '\n')

Connecting to a LoPy...
Connected
>>> 
PYB: soft reboot

RTC Set from NTP to UTC: (2017, 2, 26, 13, 18, 54, 225113, None)
Adjusted from UTC to EST timezone (2017, 2, 26, 8, 18, 54, 6, 57)

[rdixey]

@livius Excuse Me :) I already know what mktime() is. And I don't need anyone to give me instructions on using google to find info. I was pointing out a typo in the doc's.

https://docs.pycom.io/pycom_esp32/library/utime.html

mktime is the first function in the list and is described as 'Convert a time expressed in seconds since the Epoch.' I believe this is an error and should be gmtime().

mktime is listed again as the third functon and described correctly.

gmtime() is not in the list at all.

[livius]

@rdixey said in Syncing RTC To Network Time:

instructions

Without explanation that function is twice in doc - this was my first hint ;-)

[santorcuato]

@rdixey Ok, it seems interesting. Will try!

Thanks