Hardware interrupt example

RE: Hardware interrupt example

Ole Morten — Thu, 01 Aug 2013 11:48:19 GMT

To clean things up, I'd be happy if you could evaluate the answer you have received and accept it if you feel it's sufficient. If not, it might be useful to expand your question a little and provide further information.

RE: Hardware interrupt example

Håkon Alseth — Mon, 29 Jul 2013 11:23:55 GMT

Hi,

The interrupt handler is located in the file startup_nrf51.s under the comment "; External Interrupts". These should be declared in your source file (let's say main.c) in this fashion: "void PERIPHERALX_IRQHandler(void){ .. }"

When enabling the IRQ, using NVIC-functions, they take in the type "IRQn_Type". This is declared in nrf51.h, line 82.

RE: Hardware interrupt example

Guest — Sun, 28 Jul 2013 23:23:19 GMT

Thank you Sir! can you also tell me where can I find the IRQ hander function?

RE: Hardware interrupt example

Bastiaan — Sun, 28 Jul 2013 23:23:19 GMT

Thank you Sir! can you also tell me where can I find the IRQ hander function?

RE: Hardware interrupt example

Håkon Alseth — Fri, 26 Jul 2013 08:30:27 GMT

Hi,

Interrupts are essentially enabled by using two steps:

Enable the interrupt vector using NVIC_EnableIRQ(IRQ_type)
Set the appropriate bit in NRF_wantedperipheral->INTENSET = MASK_ENABLE;

I'm attaching a small example on how to setup the ADC w/ISR.

Best regards Håkon

adc_isr_example.zip