Analog Signal Validation

[Soundhariyan]

Hi, we have purchased stm32h750vbt6 microcontroller for analog signal validation with 10k potentiometers to integrate with game controller joystick especially joy.cpl using windows 10 OS.

We have dealt with DMA Circular mode configuration pointing cortex-M7 DRAM to 0x30000000 to retrieve the analog signals associated with respective 10k potentiometers. Totally we have four analog pins such as PA0,PC0,PA3 and PC5 from ADC1 & ADC2 with proper distinguished rank allocation alongside desired maximum sampling cycles but although we have altered and tested with different values of this above configuration it ended up with ADC channel leakage which is declared 16 bit ADC. 

Moreover we have tried adding external 100nf capacitors to avoid these linkage but failed. 

We kindly request you to resolve the ADC channel leakage in our current stm32 Project. Our entire stm32 project attached for your reference and fault identification.

[mƎALLEm]

Hello,

I recommend to refer to the AN5354 "Getting started with 16-bit ADC on STM32H7 MCUs" as it explains how the ADC performance varies under various conditions and provides guidelines to exploit the full potential of the STM32 16-bit ADC.