ADC interrupt not working on S32K144

[mrajanna]

Hi,

I registered ADC interrupt, but it is never getting triggered.

I have battery input connected to ADC1 with channel 2, I am able to see battery value is changing but there is no ADC interrupt triggered.

ADC1 is the device and channel is 2.

Code Snippet:

ADC_DRV_ConfigConverter(1, &adConv1_ConvConfig0);
adConv1_ChnConfig0.channel = 2;

/* Configure ADC channel and software trigger a conversion */
ADC_DRV_ConfigChan(1, 0U, &adConv1_ChnConfig0);
/* Wait for the conversion to be done */
ADC_DRV_WaitConvDone(1);
/* Store the channel result into a local variable */
ADC_DRV_GetChanResult(1, 0U, &adcRawValue);

*************************************************************************

from S32k144.h

ADC0_IRQn = 39u, /**< ADC0 interrupt request. */
ADC1_IRQn = 40u, /**< ADC1 interrupt request. */

*************************************************************************

/* Install ADC ISR */
INT_SYS_InstallHandler(ADC1_IRQn, &ADCISR, NULL);

/* Enable ADC interrupt */
INT_SYS_EnableIRQ(ADC1_IRQn);

void ADCISR(void)
{

}

Can someone please review this and guide me.

Thanks

Mohan

[danielmartynek]

Hi,

Did you enable interrupts in the ADC driver?

Regards,

Daniel

[mrajanna]

Hi Daniel,

On every ADC conversion, it seems interrupt is getting triggered.

Can you please guide me to trigger the interrupt only on certain value change.

Thanks

Mohan

[danielmartynek]

Hi Mohan,

The compare function is described in Chapter 39.5.5 of the RM. There are six compare modes configurable in SC2 register. And the result is compared to CV1-2 values.

Regards,

Daniel

[mrajanna]

Thanks Daniel.

Interrupt is now triggering for that particular ADC channel.

[Rwaghmare]

Hi mrajanna,

Can you elaborate how you used hardware compare function and how you configured particular ADC channels and it's values?