nvic registered interrupt doesn't work

RE: nvic registered interrupt doesn't work

homsch — Thu, 28 Apr 2016 19:00:34 GMT

Thanks RK this is the solution. Now the ISR works. And thanks to Petter Myhre because your answer is a bugfix for a second program fault.

RE: nvic registered interrupt doesn't work

RK — Thu, 28 Apr 2016 00:42:59 GMT

Ah - the screenshots show something you omitted to mention, you're using C++. The exclamation point should have given you a hint that code's not even linked into your app.

extern "C" for IRQ handlers, or use C.

RE: nvic registered interrupt doesn't work

homsch — Wed, 27 Apr 2016 19:25:01 GMT

I tried NRF_RTC1->EVENTS_COMPARE[0] = 0; inside the RTC1_IRQHandler. It doesn't help. In Debug Mode I never reach the Breakpoint (it is not red, it is an exclamation mark ) inside the RTC1_IRQHandler. I use the original arm_startup_nrf51.s where the handler is declared. First time the event is set I come into the if condition from main() and NRF_RTC1->EVENTS_COMPARE[0] = 0; works but the code hangs at nrf_gpio_pin_toggle(STATUS_LED_PIN); The core Registers looks Ok see screenhot:

RE: nvic registered interrupt doesn't work

Petter Myhre — Wed, 27 Apr 2016 10:14:33 GMT

Since you are not clearing the event I believe the interrupt handler is called immidiately after you leave it. Try adding NRF_RTC1->EVENTS_COMPARE[0] = 0; inside it.