About TMcCa.1

TMcCa.1 · 2020-09-22

Hi,I am setting up my STM32F405RG with 3 analog inputs on ADC with DMA.The problem I'm having is that the ADC buffer is being filled in the wrong order:For example, I have channel 11, 12 and 13, with ranks 1, 2 and 3 respectively, so I presume the AD...

TMcCa.1 · 2020-09-22

Thanks so much! Yes, this has solved my problem!  It looks like starting it twice caused the order to be incorrect!Thank you for your help.

TMcCa.1 · 2020-09-22

Ah yes, sorry... I am running in debug mode and have set a breakpoint where I set num1, num2 and num3 in the HAL_ADC_ConvCpltCallback function.I have set the three channels to known values: 3.3V , 1.5v and 0V, so I can make sure what the the ADC is r...

TMcCa.1 · 2020-09-22

Well, correct me if I'm wrong, but I am presuming that because I set the rank for each ADC channel, that this is the order in which they are scanned and thus the order that they are filled into the buffer?

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ADC + DMA - multiple channels filled into buffer in wrong order?

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Re: ADC + DMA - multiple channels filled into buffer in wrong order?