How to setup a HW timer and IRQ

[klaus1234]

Hi

I am maintaining a NRF project, done all Dev Academy courses 2 years ago, still I am havibng trouble.

My current task: I need to set a (hardware) timer interrupt with IRQ in NRF52833 lets says every 500 microsec.

I am having trouble to find the write answers in the documentation. Can you point me to the documentation?

Which example could I have a look at?

Where in the documentation about timer api?

Where would I see which HW timer is used already (by zephyr, or nrf lib)?

 Where would I see which priority I am allowed to give my ?

Thx

[mirhamza708]

You can look at the nrfx samples here https://github.com/zephyrproject-rtos/hal_nordic/tree/57d9fc59c9ea86465b5cd26f0fe2b9dcc520768b/nrfx/samples/src/nrfx_timer

And for checking which hardware timer is being already used by zephyr you need to check the dtsi files of your specific board from the boards folder in zephyrproject/ncs.

The default priority for HW timer is 0 in the sample but you can choose any priority level you want it totally depends on you the application designer.