nRF52 ATT_MTU throughput example timestamp

[yarona]

Hi,

I am running this example from SDK 15.2.0.

In my serial port prints the timestamp wraps at 1 second:

 

What should I do in order to see correct timestamps?

[Guojun Wang]

Hi Yarona, 

The timestamp relies on the RTC1 timer. 

I am wondering if you made any changes related to RTC1 configuration, for example the APP_TIMER_CONFIG_RTC_FREQUENCY, NRF_LOG_TIMESTAMP_DEFAULT_FREQUENCY in sdk_config.h or other related settings?

It would be nice if you can send me a diff between your local updates versus the original code.

[yarona]

Hi,

I used the original SDK, no changes made.

[Guojun Wang]

Hi,

It has been fixed in SDK 16.0.0. 

It would be nice if you can switch to the latest version 

[yarona]

Hi

Unfortunatly I can't switch SDK versions.

Can you point me to the root of the fix?

[Guojun Wang]

Sure, you can set APP_TIMER_KEEPS_RTC_ACTIVE to 1 in sdk_config.h for this example, then it will always keep RTC1 running and you will get correct timestamp.