work around for NCSDK-14235: Timestamps that are sent in cloud messages drift over time

[Waqar Ahmed]

Hi Support,
we had recently upgraded our firmware to nrf Connect sdk1.9.0.

i read the following known issue for 1.9.0
https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/known_issues.html?v=v1-9-0.

please can you confirm us is there any work around for the time drift problem in this sdk.

Thanks

[Waqar Ahmed]

Hi Jonathan,

I did make the changes according to this lib: date_time: Fix uptime to UTC time conversion · simensrostad/fw-nrfconnect-nrf@5b3af28 (github.com) 

but it give me wrong time stamp like 15278,

even after getting the time from modem.

the strange behave is that after 3 to 4 continuously publishing wrong timestamp when modem itself requested time from network then it start publishing timestamp.

so the issue is in function err = clock_gettime(CLOCK_REALTIME, &tp);

I am getting right timestamp here.

[JONATHAN LL]

Hi,

Can you enable CONFIG_DATE_TIME_LOG_LEVEL_DBG and provide the log. This should give us info on what exactly is going on.

Regards,
Jonathan

[Waqar Ahmed]

Hi JOHNATHAN,
I have make changes as per above discussion. We are facing a strange issue on field deployed devices, like yesterday the timestamp we are getting suddenly drift from 29 may2023 to 23 may 2023.This device is running from 3 may without any reboot.

After 2 to 3 hour. Its again reporting accurate timestamps.

will you please help us to debug the issue?

   

[Hakon]

Waqar Ahmed said:

will you please help us to debug the issue?

Would you mind opening a new ticket for this?

[Waqar Ahmed]

Hi,

I opened up new Private ticket and mentioned you there.

Thanks