gpiote handler - disable momentarily to run critical section

RE: gpiote handler - disable momentarily to run critical section

FormerMember — Tue, 06 Jun 2017 12:11:02 GMT

Yes, if there is an interrupt while it is momentarily disabled, the pending interrupt will run immediately when the interrupt is enabled again.

RE: gpiote handler - disable momentarily to run critical section

Peter — Mon, 05 Jun 2017 00:48:43 GMT

So whilst the interrupt is momentarily disabled, if an event on the GPIO occurs the event will run immediately when the interrupt is enabled again? Usually in a microprocessor an interrupt flag is set so the interrupt is pending and runs immediately when the interrupt are enabled again.

RE: gpiote handler - disable momentarily to run critical section

FormerMember — Tue, 30 May 2017 06:31:59 GMT

Yes, that looks like the right approach! I would think the easiest is to add a custom function to nrf_drv_gpiote.c/.h.

RE: gpiote handler - disable momentarily to run critical section

Peter — Tue, 30 May 2017 00:38:04 GMT

Ok. Sounds good. What do suggest using for the mask argument in those functions? Looks like use should be: int32_t channel = (int32_t)channel_port_get(pin); nrf_gpiote_int_disable(1 << channel); nrf_gpiote_int_enable(1 << channel); however channel_port_get(pin) is __STATIC_INLINE in a C file

RE: gpiote handler - disable momentarily to run critical section

FormerMember — Mon, 29 May 2017 08:47:54 GMT

If you want to disable and and then enable an interrupt, you can check if it works to use nrf_gpiote_int_disable() and then nrf_gpiote_int_enable().