[Bug]: CubeMx allows an invalid combination of parameters for ADC with DMA

[giuliomoro]

Bug Summary

CubeMx allows an invalid combination of parameters for ADC with DMA

Detailed Description

When DMA is enabled on an ADC, DMA requests will only be issued if ADC_InitTypeDef::ConversionDataManagement is set to ADC_CONVERSIONDATA_DMA_ONESHOT or ADC_CONVERSIONDATA_DMA_CIRCULAR. That is to say, ADC_CONVERSIONDATA_DR and ADC_CONVERSIONDATA_DFSDM are invalid when DMA is enabled.

The issue is that if Conversion Data Management Mode is not set to ADC_CONVERSIONDATA_DMA_CIRCULAR or ADC CONVERSIONDATA DR ADC_CONVERSIONDATA_DMA_ONESHOT, then CubeMx will generate some unusable code.

CubeMx could detect and flag this issue for the user. Or it could disable non-DMA values when DMA is enabled. Or it could make it more obvious to the user some other way that there is some DMA-relevant (and, indeed, crucial) setting in that otherwise irrelevant-looking "Conversion Data Management Mode".

Expected Behavior

No response

Actual Behavior

No response

Environment

CubeMx 6.16.1, STM32H743VITx, ADC1

Severity

None

[MKISTM]

Hello @giuliomoro,

Thank you for your report, I think there is a small typo in your sentence

The issue is that if Conversion Data Management Mode is not set to ADC_CONVERSIONDATA_DMA_CIRCULAR or ADC_CONVERSIONDATA_DR, then CubeMx will generate some unusable code.

You mean ADC_CONVERSIONDATA_DMA_ONESHOT instead ADC_CONVERSIONDATA_DR ?

BR,
Mohamed Chaker.

[giuliomoro]

yes correct, I now amended the original post for clarity.

[MKISTM]

Hello @giuliomoro,

Thank you for your report, this point has been tracked internally.
I'll keep you informed.

BR,
Mohamed Chaker.