I use multichannel(7 channels) adc1 in circular an scan mode with dma.i use ll functions and read adc values in dma_stream_IRQHandler function.the values are not exact and stable.adc sample clock is 14Mhz and I use 84cycles per channel sample. I use stm32f407vgt IC and keiluvision
I want to the adx values should be correct and stable.because when I connect adc input to ground it is not exact 0 it is like this 8 9 15 20 5