Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

How to set time via ntp

Created by: bergmanu at: 4/19/2018 8:13 AM (5 Replies)

Rating (0)

Thanks 1

6 Entries

4/19/2018 8:13 AM	Rate (0)
bergmanu Gold Expert Joined: 4/28/2015 Last visit: 2/22/2019 Posts: 1021 Rating: (166)	Hi folks, with the Image version V2.2 we added ntp(d) and timezone support. To set the time you have to do the following steps activate ntp Set your timezone Set the hardwareclock to make sure the time is still present after rebbot (with IOT2040) ntpd -q -g ln -sf /usr/share/zoneinfo/Europe/Berlin /etc/localtime (check /usr/share/zoneinfo for your timezone and city) hwclock --systohc Make sure to have an valid internet connection or add an specific IP address of your local ntp server to /etc/ntp.conf Best regards!
	Last edited by: bergmanu at: 4/19/2018 8:14:03 AM
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users Jen_Moderator

4/27/2018 7:17 AM	Rate (0)
neththi Experienced Member Joined: 10/12/2014 Last visit: 2/22/2019 Posts: 46 Rating: (0)	NTP seems to be working fine, however hwclock --systohc seems to be not working. Once the device is booted after running hwclock --systohc , the time is reset to the previous value which was in UTC 0.0. but the software time remains unchanged (which obtained by date command).

Suggestion To thank Quote Answer

5/4/2018 7:39 AM	Rate (0)
bergmanu Gold Expert Joined: 4/28/2015 Last visit: 2/22/2019 Posts: 1021 Rating: (166)	Hi, thanks for the feedback You are right, the hwclock always is set back to UTC after reboot. I tried it with hwclock --systohc --localtime and some other tries but I didn't manage to have the hwclock with localtime after reboot.. I will come back to you when I have a solution. Best regards!

Suggestion To thank Quote Answer

5/9/2018 5:49 PM	Rate (0)
jan-k Bronze Member Joined: 4/28/2015 Last visit: 2/15/2019 Posts: 231 Rating: (21)	That's by design, on every Linux system: RTC is in UTC. You need to set /etc/timezone according to your local zone. Reminds me of an open to-do: https://github.com/siemens/meta-iot2000/issues/35
	Last edited by: jan-k at: 5/9/2018 5:50:28 PM
Suggestion To thank Quote Answer

9/22/2018 1:34 AM	Rate (0)
HugoD Silver Member Joined: 3/13/2014 Last visit: 12/19/2018 Posts: 434 Rating: (86)	Hello, Is there any news on this topic? I am really interest. Best regards, HugoD
	Is it useful? Rate it ★★★★★
Suggestion To thank Quote Answer

2/7/2019 12:45 PM	Rate (0)
AutoGen_8579465 Advanced Member Joined: 2/10/2017 Last visit: 2/22/2019 Posts: 18 Rating: (0)	Dear Bergamu, With image V2.2, NTP is enabled and worked automatically when it connects to internet. Am I correct? Because per my test, I never use "ntpd -q -g" command before, but the clock is updated to current time automatically once my IOT connects to internet.

Suggestion To thank Quote Answer

| |

Related topics by keywords:

SIMATIC IOT2000 FAQ

Follow us on