[meta-freescale] The correct way to manage system clock time

[Mauro Ziliani]

Thanks for the answer.

Your idea is a good idea, but it is not applicable to my system because
it is always offline.


My trouble is this.

I put localtime to UTC zone. Suppose the time is March 11, 15:23.

I set the system clock with the date command


date --set '2019-03-10  18:00:00'


I expect that the system clock now is March 10, 18:00, even if localtime
is UTC.


But this is not true,because when I restart the system the date/time is
not updated as I like.


This beaviour should be an hardware problem of the board?


MZ


Il 11/03/19 01:01, Bob Cochran ha scritto:
> On 3/10/19 3:52 PM, Mauro Ziliani wrote:
>> Hi all.
>>
>> I'm working with Krogoth over an imx6dlsabresd derived board. The rtc is
>> a ds1307.
>>
>> Which is the right management of the system clock?
>
>
> I'm not sure whether you're asking about setting the right locale or
> managing the clock in general.
>
> If it's the latter, then maybe this will help:
>
> We run the ntp daemon, which goes out to an NTP server to grab the
> time & date.   This implements the Network Time Protocol.
>
> Take a look at the  ntp_4.2.8p12.bb receipe:
>
> SUMMARY = "Network Time Protocol daemon and utilities"
>
> DESCRIPTION = "The Network Time Protocol (NTP) is used to \
> synchronize the time of a computer client or server to \
> another server or reference time source, such as a radio \
> or satellite receiver or modem."
>
> Bob
>
>
>>
>> The system clock is setup in /etc/default/rcS as UTC=yes
>>
>>
>> If I type the command 'date' in a terminal i get
>>
>> [1] March 10, 19:43 UTC 2019
>>
>>
>> [2] I try to set March 10, 23:00 with command 'date 03102300' to set
>> date.
>>
>>
>> Then I look if the setup is ok and it is. The date is the same I set.
>>
>>
>> I reboot the system, and the date/time has the right vaule.
>>
>> When I try the date command, the clock come back a the value 19:43, the
>> value [1].
>>
>>
>> Why?
>>
>>
>> Best regards,
>>
>>    MZ
>>
>