How do i Create Nested Timer

RE: How do i Create Nested Timer

Ole Bauck — Mon, 07 Mar 2016 10:41:38 GMT

Yeah, that was for nRF51 :) nRF52 has it: devzone.nordicsemi.com/.../

RE: How do i Create Nested Timer

awneil — Mon, 07 Mar 2016 10:25:13 GMT

Ah - so it isn't. :-(

That's nRF51 (Cortex-M0) - what about nRF52 (Cortex-M4) ?

RE: How do i Create Nested Timer

Ole Bauck — Mon, 07 Mar 2016 10:09:58 GMT

SysTick timer is actually not implemented on the nRF, see here.

RE: How do i Create Nested Timer

Ole Bauck — Mon, 07 Mar 2016 09:47:54 GMT

Your code creates one timer that executes timer_handler() every 2s and one timer that executes wait_timer_handler() every 100ms. If the handler should only be executed once, you can configure it as APP_TIMER_MODE_SINGLE_SHOT. A timer can be started inside another timer handler. I recommend to read the app_timer tutorial.

RE: How do i Create Nested Timer

awneil — Mon, 07 Mar 2016 09:05:41 GMT

The usual approach is to have a single "real" (hardware) timer producing a timebase (or "tick") and have software timers driven from that.

On Cortex-M, the SysTick timer is ideal for this ...