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How to set time via ntp

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

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4/19/2018 8:13 AM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 11/15/2019 Posts: 1216 Rating: (196)	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
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4/27/2018 7:17 AM	Rate (0)
neththi Experienced Member Joined: 10/12/2014 Last visit: 9/27/2019 Posts: 47 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).

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5/4/2018 7:39 AM	Rate (0)
bergmanu Platinum Expert Joined: 4/28/2015 Last visit: 11/15/2019 Posts: 1216 Rating: (196)	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!

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5/9/2018 5:49 PM	Rate (0)
jan-k Bronze Member Joined: 4/28/2015 Last visit: 11/14/2019 Posts: 277 Rating: (23)	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
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9/22/2018 1:34 AM	Rate (0)
HugoD Silver Member Joined: 3/13/2014 Last visit: 5/10/2019 Posts: 434 Rating: (95)	Hello, Is there any news on this topic? I am really interest. Best regards, HugoD
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2/7/2019 12:45 PM	Rate (0)
AutoGen_8579465 Advanced Member Joined: 2/10/2017 Last visit: 11/8/2019 Posts: 31 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.

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5/29/2019 4:12 PM	Rate (0)
rolantespejo Member Joined: 2/7/2018 Last visit: 7/9/2019 Posts: 3 Rating: (0)	Hello friends, I was reading carefully on the subject since I also have problems to adjust the local time, do you already have any solution? Thank you. Rolant.

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10/4/2019 5:04 AM	Rate (0)
ziml Regular Member Joined: 11/7/2017 Last visit: 11/14/2019 Posts: 6 Rating: (0)	The example image file installed in my IOT2040 is 2.4.0. I tried using the command below for setting the timezone to Kuala_Lumpur. Step 1: ntpd -q -g Step 2: ln -sf /usr/share/zoneinfo/Asia/Kuala_Lumpur /etc/localtime Note:(check /usr/share/zoneinfo for your timezone and city) Step 3: hwclock --systohc I have checked when I reboot my IOT2040, it is still set to my local time.
	Last edited by: ziml at: 10/04/2019 05:11:57 Last edited by: ziml at: 10/04/2019 05:13:30
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10/16/2019 5:35 PM	Rate (0)
Ocean_ Experienced Member Joined: 9/2/2013 Last visit: 10/16/2019 Posts: 47 Rating: (18)	https://support.industry.siemens.com/tf/ww/en/posts/time-and-timezone/180515/?page=0&pageSize=10#post721836

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