How to make RTC clock with NTP

Reply to How to make RTC clock with NTP on Thu, 01 Apr 2021 08:13:00 GMT

dionw — Thu, 01 Apr 2021 08:13:00 GMT

Thx @ajb2k3 - only that example does not appear to be applicable to the M5StickC.

Reply to How to make RTC clock with NTP on Sun, 28 Mar 2021 12:33:30 GMT

ajb2k3 — Sun, 28 Mar 2021 12:33:30 GMT

@dionw said in How to make RTC clock with NTP:

@lukasmaximus I'm keen to see this working as well. When do you think it might be possible for the NTP RTC example uiFlow block @ajb2k3 mentioned
he had uploaded to be available?

Not Sure what happened to it but the example file has been uploaded to github
https://github.com/Ajb2k3/UIFlowHandbook/blob/master/NTP_RTC.m5f

Reply to How to make RTC clock with NTP on Sun, 28 Mar 2021 11:34:04 GMT

dionw — Sun, 28 Mar 2021 11:34:04 GMT

@lukasmaximus I'm keen to see this working as well. When do you think it might be possible for the NTP RTC example uiFlow block @ajb2k3 mentioned he had uploaded to be available?

Reply to How to make RTC clock with NTP on Sat, 27 Feb 2021 19:40:58 GMT

sj3fk3 — Sat, 27 Feb 2021 19:40:58 GMT

@lukasmaximus Why is it still not fixed?

Reply to How to make RTC clock with NTP on Thu, 14 Jan 2021 08:26:55 GMT

ajb2k3 — Thu, 14 Jan 2021 08:26:55 GMT

I recently uploaded an NTP RTC example for UIFLow 1.7.
Where has that gone?

Reply to How to make RTC clock with NTP on Wed, 13 Jan 2021 16:31:32 GMT

TheAlphaGhost — Wed, 13 Jan 2021 16:31:32 GMT

Same here. The M5 Docs are a nightmare!!
On every documentation, the syntax is wrong, and not work correctly!
😒

Reply to How to make RTC clock with NTP on Fri, 14 Feb 2020 06:05:56 GMT

raystdenis — Fri, 14 Feb 2020 06:05:56 GMT

Sorry, the last few lines should read:

CurrentYear   = int(RightNow[RTC_YYYY])
CurrentMonth  = int(RightNow[RTC_MM])
CurrentDay    = int(RightNowRTC_DD])
CurrentHour   = int(RightNow[RTC_HH])
CurrentMinute = int(RightNow[RTC_MN])
CurrentSecond = int(RightNow[RTC_SS])

Sorry, this is my first MicroPython program and just learning it.
Ray

Reply to How to make RTC clock with NTP on Fri, 14 Feb 2020 05:23:37 GMT

raystdenis — Fri, 14 Feb 2020 05:23:37 GMT

Got tired of waiting for M5Stack MicroPython to support rtc.ntp_sync, so I came up with a simple workaround, assuming you have access to a webserver:

On your webserver, just create a tiny datetime.php file as follows:

function getDatetimeNow() {
$tz_object = new DateTimeZone('Canada/Pacific');
$datetime = new DateTime();
$datetime->setTimezone($tz_object);
return $datetime->format('Y-m-d\ H:i:s');
}
?>

Change the TimeZone to your own timezone.
When this PHP code runs, it simply takes the webserver's internal date and time (which should be fairly accurate) and displays the text [yyyy-mm-dd hh:mm:ss]

Now in your MicroPython code, do the following:

from micropython import const
from m5stack import *
from m5ui import *
from uiflow import *
import utime as time
import machine
import urequests
import wifiCfg

RTC_YYYY = const(0)
RTC_MM   = const(1)
RTC_DD   = const(2)
RTC_HH   = const(4)
RTC_MN   = const(5)
RTC_SS   = const(6)

WIFI_SSID      = 'YourSSID'
WIFI_PASSWORD  = 'YourPassword'
URL            = 'http://api.pushingbox.com/pushingbox?devid=v883AAC5A2DE4A5A&location='
DATETIME_URL   = 'http://stdenissoftware.com/datetime.php'


#==================================================================
# Set internal RTC clock based on calling a URL that returns the current local time
# as '[yyyy-mm-dd hh:mm:ss]'. Function must be connected to internet.
# Parameters:
#   WIFI_SSID: the SSID to connect to
#   WIFI_PASSWORD: Wifi Password
#   DATETIME_URL: the URL to call to return the current time 
def setRTC(WIFI_SSID,WIFI_PASSWORD,DATETIME_URL):
  rtc = machine.RTC()
  while wifiCfg.wlan_sta.isconnected() != True:
    wifiCfg.doConnect(WIFI_SSID,WIFI_PASSWORD)
    if wifiCfg.wlan_sta.isconnected() != True:
      time.sleep(1)
    #end if
  #wend
  if wifiCfg.wlan_sta.isconnected():
    #lblWiFi.setText('WiFi Connected')
    try:
      req = urequests.request(method='GET', url=DATETIME_URL,headers='')
      httpData = req.text
      iPos1 = httpData.find("[")
      iPos2 = httpData.find("]")
      if iPos2 > iPos1:
        DateTime = httpData[iPos1+1:iPos2]
        YYYY = int(DateTime[0:4])
        MM   = int(DateTime[5:7])
        DD   = int(DateTime[8:10])
        HH   = int(DateTime[11:13])
        MN   = int(DateTime[14:16])
        SS   = int(DateTime[17:19])
        # Set RTC using: Year,Month,Day,WeekDay,Hour,Min,Sec,MS
        rtc.datetime((YYYY,MM,DD,0,HH,MN,SS,0))
      else:
        DateTime = ''
      #end if
    except:
      DateTime = ''
  else:
    #lblWiFi.setText('WiFi not connected')
    DateTime = ''
  #end if
  return DateTime
#------------------------------------------------------------------

RightNow = rtc.datetime()
CurrentYear   = int(newDateTime[RTC_YYYY])
CurrentMonth  = int(newDateTime[RTC_MM])
CurrentDay    = int(newDateTime[RTC_DD])
CurrentHour   = int(newDateTime[RTC_HH])
CurrentMinute = int(newDateTime[RTC_MN])
CurrentSecond = int(newDateTime[RTC_SS])

So, once the RTC is set, it will keep pretty accurate time until the M5Stack gets reset or powered off. Or you can just call the routine every day to resync it. Note that the PHP code is currently set for Canadian Pacific Time.
Also note that the above URL is my personal webserver - you can use it for quick testing, but not long term please.

Reply to How to make RTC clock with NTP on Wed, 22 Jan 2020 02:31:50 GMT

lukasmaximus — Wed, 22 Jan 2020 02:31:50 GMT

Hey @lilianz I regret to inform you that ntp_sync hasn't been present in the RTC module since firmware v1.2.3 I'm not entirely sure why, but thats the way it is. Perhaps you will find some clues on controlling the RTC from one of the many watch projects on our hackster page https://www.hackster.io/m5stack/projects