How to use Oversampling with H753 ADC..

BBick.1 · ‎2020-10-10

I've been trying to get Oversampling working using polling for ADC completion, but I'm not seeing the expected results. I found one example for x4 oversampling, but in reality that doesn't seem to actually be doing anything. I am trying to use 32 for the ratio using the appropriate definition from the include file. But when I do that I wind up with a value that is about one fourth what it should be. So I'm looking for a working example of oversampling with this processor.

Thanks,

TDK · ‎2020-10-13

https://github.com/STMicroelectronics/STM32CubeH7/tree/e261d820b398846a94f22f4aeb32d86c29546efb/Projects/STM32H743I-EVAL/Examples/ADC/ADC_OverSampler

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BBick.1 · ‎2020-10-13

Thanks for the pointer to the example. When I attempted to use the oversampling configuration I was not getting correct results. Digging into the specs for the 753 MCU we are using I was able to resolve the issue and now get consistent results, and within the expected tolerance for the voltage that is being monitored.