AURIX TC233L About Adc_GetGroupStatus

[#1]

Hi. I am developing Inverter to control motor using TC233L.

However I have problems.. about ADC.

I want to read ADC Value.. but i Can't

Result_ADC_Status is 1 (ADC_BUSY)

what should i check?? plz help me..

Adc_SetupResultBuffer(AdcConf_AdcGroup_AdcGroup_Voltage, &Adc_Voltage[0]);

while(1){
Adc_StartGroupConversion(AdcConf_AdcGroup_AdcGroup_Voltage);
Result_ADC_Status = Adc_GetGroupStatus(AdcConf_AdcGroup_AdcGroup_Voltage);
}

[#2]

Did you check with the debugger the other ADC registers? Maybe some clock is missing? Did you double/triple-check the initialization?

[piyush]

Hi, I too have the same problem. I intend to read ADC without interrupt service, one-shot, SW triggered.

Clock and other configurations look ok.

As I debugged, the Adc_GetGroupStatus API is checking for conversion status through a flag which is set only by "Adc_lSetResBuffEndStatusAtomic". This function, in turn, is called only within the interrupt services. Therefore, I am never getting a completion status.

However, the ADC group result registers are showing the updated values correctly, incl the completion flag (VR). 

Can anyone help on this?

To summarize, I intent to read the ADC without interrupt service, just by polling. How do I get rid of the perpetual Busy status?

[Di_W]

Hi piyush,

https://www.infineon.com/aurix-expert-training/Infineon-AURIX_ADC_Single_Channel_1_KIT_TC275_LK-TR-v...

Have you read the above document and the source code you can download here:

https://github.com/Infineon/AURIX_code_examples/tree/master/code_examples

dw

[KKV]

I am facing similar issues, can any one provide some pointers.. 

[Kunqiao_L · Accepted solution]

Hi KKV,

In the TC2X, according to the user manual it supports polling mode, but there are some limits of using it. 

refer to this function: Adc_17_GetChannelStatus

While in the TC3X, ADC polling mode is not supported in MCAL. The ADC group status is updated in ADC interrupt routines. Adc_ReadGroup checks for the group status and assumes that there are no ADC results available, due to missing update in interrupt routines . Therefore ADC interrupt is required - then polling for ADC_COMPLETED status is supported.

Thanks