AM263P4-Q1: AM263P4-Q1: Autosar : ADC ISR not triggered on period match event of PWM

Hi Wenhao,

Did you check if the PWM is generated correctly? I did a test with ePWM + ADC example, and test is passed. I haven't checked the sampled ADC values.

How do you know the ADC is not triggered?

When all the ADC peripherals was configurated in ePWM+ADC in DMA mode , the DMA interrupt functions was excuted only once(the first time), so I thought the ADC is not trigged。

But when I change the mcal configuration, ADC0 was ePWM+ADC in interrupt  mode,  and  ADC1~ADC4 was ePWM+ADC in DMA  mode,

ADC0 interupt function can be excuted periodically and work normally，but ADC1~ADC4 does not work normally。

Could you have a try in ePWM+ADC in DMA mode and tell me the result?

HI Wenhao,

Have you tried the method I gave to Fan last week (after our webex meeting)?

Cdd_Dma_Init(NULL_PTR);
Mcal_CacheP_init();

/* Perform a cache write back to the result buffers */
Mcal_CacheP_wb((void *)AdcTest_Buffer, 1024, Mcal_CacheP_TYPE_ALL);

/* Memset result buffer and give to driver */
memset( &AdcTest_Buffer[grpIdx][0], 0xFFU, (sizeof (Adc_ValueGroupType) * ADC_TEST_BUF_SIZE_WORD));

retVal = Adc_SetupResultBuffer(groupIdx, &AdcTest_Buffer[groupIdx][0]);

uint32 j = 0;

/* PWM triggering. */
Epwm_Enable(0x50000000ul);
//Epwm_Enable(0x50001000ul);

/* Check the Group Triggering one by One. */
j = AdcConf_AdcHwUnit_AdcHwUnit_0_AdcGroup_AdcGroup0_HwOneShot;

Adc_EnableGroupNotification(j);

Adc_EnableHardwareTrigger(j);

EPWM_setTimeBaseCounterMode(0x50000000ul, EPWM_COUNTER_MODE_UP);

/* Wait for Group Status to complete. */
while(ADC_BUSY == Adc_GetGroupStatus(j))
{
;
}

Hello Wenhao,

We have a unit test application (AdcTest Config 39) which tests the DMA mode in ADC MCAL with ADC triggered by EPWM. We were able to execute this test case successfully.

Below are the ADC and DMA config used in this test application.

Please share the ADC and DMA config used in your application. We would like to compare and closely match the configs and replicate the issue.

Thanks

K.Sanjeev

HI Wenhao,

The MCAL SW team is working on an example.