How to block the code while interrupts are executing?

RE: How to block the code while interrupts are executing?

Einar Thorsrud — Thu, 25 Feb 2016 12:24:23 GMT

If you execute the code in this comment from main() somehow rather than a interrupt, I do not see what the problem can be. You could always try to change the priority of ADC IRQ to NRF_APP_PRIORITY_HIGH, though it should not be needed. What is the state of the ADC peripheral after it has been started? Could you check with a debugger?

RE: How to block the code while interrupts are executing?

sowmya — Wed, 24 Feb 2016 13:51:18 GMT

Thank you for the reply. Yes I called it from main but still interrupt was not hitting and it was in the blocking statement while(Conv_Completed == false);. How to set the priority of the variable?

Update: The code snippet will be like this:

void read_adc()
{
 Conv_Completed = false;
 NRF_ADC->TASKS_START = 1;
 while(Conv_Completed == false);
 }

Yes previous I was calling from timer isr. Now I changed and calling from main, but still interrupt is not coming.

RE: How to block the code while interrupts are executing?

Einar Thorsrud — Wed, 24 Feb 2016 13:40:31 GMT

In your case, you must make sure that the priority of ADC_IRQHandler() is higher than the priority where you wait for the Conv_Completed flag. How do you call that piece of code? As you have this problem, it seems it's called from a interrupt context. Either you should try to call it from the main context (effectively lowering its priority), or you need to increase the priority of ADC_IRQHandler().