How to read multichannels ADC Value?

Question

I can read ADC value from ADC1_IN1 channel with this code ADCValue = HAL_ADC_GetValue(&hadc1); but ADC1 port (you can see on picture) has many channels. How can I read values from ADC1_IN2 ? How can I describe channel 2 in code ?

Answer 1

You can set ADC Channel by HAL_ADC_ConfigChannel function :

ADC_ChannelConfTypeDef sConfig;
sConfig.Channel = ADC_CHANNEL_2; // ADC Channel
sConfig.Rank = 1; //Rank (1-16) Rank: The rank in the regular group sequencer.
sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES; //ADC Sampling Times
sConfig.Offset = 0; // Reserved

if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) {
    //Error
}

Description of STM32F4xx HAL drivers