I have an ADC with two channels on a nucleo f401re, one who reads values from a termistor(channel 8, rank1) and one who starts to read values from a potentiometer(channel 1, rank 2).Pressing the button on microcontroler should switch between the channels but I can only switch from channel 8 to 1.

I have an ADC with two channels on a nucleo f401re, one who reads values from a termistor(channel 8, rank1) and one who starts to read values from a potentiometer(channel 1, rank 2).Pressing the button on microcontroler should switch between the channels but I can only switch from channel 8 to 1.