DMA circular mode and multiple adc channels

[as0wanth]

i am using dma circular mode for reading adc from 2 different channel. But the main problem that i faced was the value when it is in circular mode is getting offset from the value that i expect from the adc but when i used the normal mode the value was correct. Iam attaching my code below.

 

[waclawek.jan]

Which STM32?

 sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;

Is the given signal's impedance low enough to support such short sampling time?

JW

[as0wanth]

stm32g4 series

 

[TDK]

> sConfig.Offset = 182;

What values are you getting, and what values are you expecting? Increase sample time.