Doubt regarding potentiometer ADC Values on STM32 NUCLEO - L476RG.

[Killstreet30]

Hello,

I have configured my circuit to have a potentiometer and have set up an ADC with continuous conversion mode but I am unable to get a varied output. It just gets stuck on one value even thought I change the value of the potentiometer. Please help

I have attached my code below.

MX_ADC1_Init();

 /* USER CODE BEGIN 2 */

 /* USER CODE END 2 */

 /* Infinite loop */

 /* USER CODE BEGIN WHILE */

 while (1)

 {

  /* USER CODE END WHILE */

 HAL_ADC_PollForConversion(&hadc1,1000);

  readValue = HAL_ADC_GetValue(&hadc1);

  /* USER CODE BEGIN 3 */

 }

Thanks!

[Jaroslav JANOS · Accepted solution]

Hi @Killstreet30​,

please double check that you configure your ADC properly, incl. proper channel/pin. Anyway, your code is probably missing

HAL_ADC_Start(&hadc1)

which means your ADC is not even enabled.

BR,

Jaroslav

[Killstreet30]

Thank you!