topic ADC is always BUSY and Conversion does not complete in S32K

ADC is always BUSY and Conversion does not complete

akbar_ar — Thu, 24 Dec 2020 12:37:08 GMT

ADC is always BUSY and Conversion does not complete

when i add a while loop to check the ADC mode is BUSY the control stays in this while loop

I am trying to Read the Pin values using Adc_Readgroup

but to read successfully the conversion should be complete

I am calling functions

Adc_Calibrate(AdcGroup_0,&adc0_cal_status);

/* Setup the variables to contain the ADC results */
Adc_SetupResultBuffer(AdcGroup_0, &ADC_Group0Results[0]);

/* Initiate the initial conversion */
Adc_StartGroupConversion(AdcGroup_0);

before calling

Adc_ReadGroup(AdcGroup_0,&ADC_Group0Results[0]);

kindly find the configuration file below

Re: ADC is always BUSY and Conversion does not complete

VinhNguyen13 — Fri, 25 Dec 2020 08:51:57 GMT

Hi man,

Did you enable the Port Pin for ADC, and the Clock in MCU? Just hint for you.

Re: ADC is always BUSY and Conversion does not complete

akbar_ar — Mon, 28 Dec 2020 05:20:45 GMT

Hi VinhNguyen

Thank You for the reply

Port pins are enabled in PORT and Clock(4Mhz SIRC) is enabled for ADC in MCU

Regards

Akbar

Re: ADC is always BUSY and Conversion does not complete

akbar_ar — Fri, 01 Jan 2021 10:13:23 GMT

Hi Vinhnguyen

The problem is resolved the problem was I have two versions of the project there is no issue in the older version. When you replied i did checked the port pins and Mcu clock. the port pin was enabled and Mcu clock was set to SIRC. At later point of time when i was comparing the two versions i found that SIRC was not under Mcu control so i changed to SOSC clock now it works

Your hint helped though but i was late to find it