Enableing timer0 interrupt in ble_app_hrs not giving advertisemnet

[balaji]

Hi

i created one timer0 interrupt in ble_app_hrs.

void timer0_init() { NRF_TIMER0->TASKS_STOP=0; NRF_TIMER0->PRESCALER=4; NRF_TIMER0->BITMODE=3; NRF_TIMER0->MODE=0; NRF_TIMER0->TASKS_CLEAR = 1;

NRF_TIMER0->EVENTS_COMPARE[0]=0;
NRF_TIMER0->CC[0]= 5000*1000;
NRF_TIMER0->INTENSET=1<<15;

NVIC_EnableIRQ(TIMER0_IRQn);

}

i call this function after timer_init() in ble_app_hrs

but NVIC_EnableIRQ(TIMER0_IRQn); function is stop the advertisement.

Kindly suggest me.

Regards Balaji

[Nils Minor]

Hi,

first i think, if you use the Softdevice, then don't use NVIC_EnableIRQ. There is a function in nrf51_soc.h like SD_ NVIC_EnableIRQ, use this. Also set the Priority with such an SD_ function.

I am not sure, did you checked that you can use Timer 0 ? One Timer is used by the SD i don't know which one, check this in the SD Sheet.

Best regards Nils

[Ole Morten]

Nils are quite right that you shouldn't use the NVIC_* functions directly when the softdevice is enabled.

Also, as he suspects, TIMER0 is the timer used by the softdevice, so using this when the softdevice is enabled will cause a HardFault. The complete list of peripherals used by the softdevice is in the SoftDevice Specification: https://www.nordicsemi.com/eng/content/download/13238/213065/file/S110_SoftDevice_Specification%20v1.1.pdf