using the STM32G473CET6 and have configured 4 ADC channels. When scan mode is enabled, the readings from the first two channels are normal, but for the last two channels with an active voltage signal input, the ADC still shows readings of over a thousand when 0V is input. When I disconnect the external interface, I find that this channel has a voltage over 1.3V after initialization. Why is this happening? Later, I tried enabling single-read mode and initializing the ADC interface each time before reading, and the values read were normal.
