Zephyr Mesh / Timer accuracy

RE: Zephyr Mesh / Timer accuracy

masak — Wed, 24 Feb 2021 14:18:25 GMT

Hi,

Which document? BTW, I feel it is nothing to do with the resolution. Anyway, what I am trying to is to reduce the jitter of the timer interrupt when it is set to trigger at 500uS using this API.

k_timer_start(&my_timer_ms, K_MSEC(TIMER_INTERVAL_MSEC), K_MSEC(TIMER_INTERVAL_MSEC));

I don't know whether it is replies on RTC or Timer, but I guess it it the timer.

With the current setup, The period between two interrupts ranges about 400 uS to 600uS, not stable at 500uS.

I am looking for solution for this.

Thanks,

RE: Zephyr Mesh / Timer accuracy

Joakim Jakobsen — Wed, 24 Feb 2021 10:18:59 GMT

You can check the documentation for the resolution of the timers.

Are you using the RTC or the TIMER?

RE: Zephyr Mesh / Timer accuracy

masak — Sat, 20 Feb 2021 00:51:30 GMT

no response?

RE: Zephyr Mesh / Timer accuracy

masak — Wed, 03 Feb 2021 17:45:51 GMT

I did not include the codes.

k_timer_init(&my_timer_ms, timer_ms_event, NULL);
k_timer_start(&my_timer_ms, K_MSEC(TIMER_INTERVAL_MSEC), K_MSEC(TIMER_INTERVAL_MSEC));

k_timer_init(&my_timer_us, timer_us_event, NULL);
k_timer_start(&my_timer_us, K_USEC(TIMER_INTERVAL_USEC), K_USEC(TIMER_INTERVAL_USEC));

Thanks,

masakura