Kinetis MicrocontrollersのトピックRe: ADC INTERRUPT

ADC INTERRUPT

Naveen158 — Mon, 01 Jul 2024 12:51:46 GMT

I use KEAZ128AMLH Controller where even though i disable the ADC Interrupt after a particular sequence (and then later enabled again), interrupt is being triggered.

Note : AIEN = Low, configured for HW (PIT (TEN, TIE, TIF registers are Low) on interrupt trigger so interrupt should not trigger as AIEN and TEN is low.

Re: ADC INTERRUPT

xiangjun_rong — Tue, 02 Jul 2024 03:03:44 GMT

Hi,

I suppose that you can use the NVIC module to control the interrupt.

DisableIRQ( ADC0_IRQn);
If you do want to stop ADC conversion, you can set the ADCH as 0x1F.
 
 
Hope it can help you
BR
Xiangjun Rong
 

Re: ADC INTERRUPT

Naveen158 — Wed, 03 Jul 2024 06:02:40 GMT

Thanks Xiangjun Rong for Answering my Question, the solution you gave me works absolutely fine but it does not solve my root Problem, can you explain me why ISR is executing even though the interrupt is off (AIEN = 0).

Re: ADC INTERRUPT

xiangjun_rong — Wed, 03 Jul 2024 07:41:39 GMT

Hi,

I suppose that the previous interrupt still valid after you clear AIEN bit.

Pls try to clear the pending bit for the ADC when the clear AIEN bit

NVIC->ICPR[0]|=1<<15;

check if you can enter ISR

XiangJun Rong

Re: ADC INTERRUPT

Naveen158 — Tue, 09 Jul 2024 09:47:57 GMT

No it still hits the ISR even after turning off the PIT and clearing the pending ADC Interrupt

Note : ADC Interrupt is still enabled

on Disable of ADC, PIT and at the same time clearing its Pending interrupts is solving my issue.