Regarding nRF51 Timer

RE: Regarding nRF51 Timer

roger.k — Tue, 08 Mar 2016 08:09:05 GMT

Thanks a lot

RE: Regarding nRF51 Timer

Susheel Nuguru — Tue, 08 Mar 2016 07:08:22 GMT

Take a look at this thread, that explain the possible reasons why your code restarts.

RE: Regarding nRF51 Timer

roger.k — Tue, 08 Mar 2016 00:16:38 GMT

Thanks. I put your code. But it still has problem. As long as I put "scan_start()" function before "start_timer()" function, it reboots continuously.

int main(void) {

bool erase_bonds;

APP_TIMER_INIT(APP_TIMER_PRESCALER, APP_TIMER_OP_QUEUE_SIZE, NULL);

uart_init();

scan_start();

	nrf_gpio_cfg_output(GPIO_TOGGLE_PIN);

	nrf_gpio_cfg_output(GPIO_TOGGLE_PIN_1);

	start_timer();

RE: Regarding nRF51 Timer

Susheel Nuguru — Mon, 07 Mar 2016 11:28:05 GMT

You have to clear the generated events in the irq handler

    NRF_TIMER2->EVENTS_COMPARE[0] = 0;  
    NRF_TIMER2->EVENTS_COMPARE[1] = 0;  
    NRF_TIMER2->EVENTS_COMPARE[2] = 0;  
    NRF_TIMER2->EVENTS_COMPARE[3] = 0;

You also need to clear the timer when either COMPARE1 or COMPARE0 event is generated depending on which ever logic you need.'

NRF_TIMER2->SHORTS |= TIMER_SHORTS_COMPARE0_CLEAR_Msk;

NRF_TIMER2->SHORTS |= TIMER_SHORTS_COMPARE1_CLEAR_Msk;