Hello, I am working on the stm32f373C8T6 MCU and trying to get some values out of the SDADC but I don't get any values apart from 0 and sometimes 5209/5217 for some reason. I am following the datasheet's instructions that I will display below.

[RKula.1]

Initialization

1. As prerequisite, fill in the HAL_SDADC_MspInit() :  Enable SDADCx clock interface with __SDADCx_CLK_ENABLE(). 

Configure SDADCx clock divider with HAL_RCCEx_PeriphCLKConfig. 

Enable power on SDADC with HAL_PWREx_EnableSDADC(). 

Enable the clocks for the SDADC GPIOS with __HAL_RCC_GPIOx_CLK_ENABLE(). 

Configure these SDADC pins in analog mode using HAL_GPIO_Init().

 If interrupt mode is used, enable and configure SDADC global interrupt with HAL_NVIC_SetPriority() and HAL_NVIC_EnableIRQ(). 

If DMA mode is used, configure DMA with HAL_DMA_Init and link it with SDADC handle using __HAL_LINKDMA.

2. Configure the SDADC low power mode, fast conversion mode, slow clock mode and SDADC1 reference voltage using the HAL_ADC_Init() function.

Note: Common reference voltage. is common to all SDADC instances.

3. Prepare channel configurations (input mode, common mode, gain and offset) using HAL_SDADC_PrepareChannelConfig and associate channel with one configuration using HAL_SDADC_AssociateChannelConfig. 

Calibration

1. Start calibration using HAL_SDADC_StartCalibration or HAL_SDADC_CalibrationStart_IT.

2. In polling mode, use HAL_SDADC_PollForCalibEvent to detect the end of calibration.

3. In interrupt mode, HAL_SDADC_CalibrationCpltCallback will be called at the end of calibration. 

Regular channel conversion

1. Select trigger for regular conversion using HAL_SDADC_SelectRegularTrigger.

2. Select regular channel and enable/disable continuous mode using HAL_SDADC_ConfigChannel.

3. Start regular conversion using HAL_SDADC_Start, HAL_SDADC_Start_IT or HAL_SDADC_Start_DMA.

4. In polling mode, use HAL_SDADC_PollForConversion to detect the end of regular conversion.

5. In interrupt mode, HAL_SDADC_ConvCpltCallback will be called at the end of regular conversion.

6. Get value of regular conversion using HAL_SDADC_GetValue.

7. In DMA mode, HAL_SDADC_ConvHalfCpltCallback and HAL_SDADC_ConvCpltCallback will be called respectively at the half transfer and at the transfer complete.

8. Stop regular conversion using HAL_SDADC_Stop, HAL_SDADC_Stop_IT or HAL_SDADC_Stop_DMA.

and my code is:

#include "main.h"

#include"stdio.h"

#include "stm32f3xx_hal.h"

ADC_HandleTypeDef hadc1;

SDADC_HandleTypeDef hsdadc1;

UART_HandleTypeDef huart2;

void SystemClock_Config(void);

static void MX_GPIO_Init(void);

static void MX_USART2_UART_Init(void);

static void MX_SDADC1_Init(void);

static void MX_ADC1_Init(void);

/* USER CODE BEGIN PFP */

volatile int16_t rawAnalogValueI = 0;

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/

/* USER CODE BEGIN 0 */

//Code permettant d'utiliser la liaison série pour une commande printf

int __io_putchar (int ch)

{

 HAL_UART_Transmit (&huart2, (uint8_t *) &ch, 1, 100);

 return (ch);

}

int _write (int file, char *ptr, int len)

{

 int DataIdx;

 for (DataIdx = 0; DataIdx < len; DataIdx++)

   {

     __io_putchar (*ptr++);

   }

 return len;

}

void ErrorDisplay (char * strLine)

{

 printf ("%s", strLine);

 while (1)

   {

   }

}

/* USER CODE END 0 */

/**

 * @brief The application entry point.

 * @retval int

 */

int main(void)

{

 /* USER CODE BEGIN 1 */

 void HAL_SDADC_ConvCpltCallback (SDADC_HandleTypeDef *hsdadc)

 {

    if (hsdadc == &hsdadc1)

    rawAnalogValueI = HAL_SDADC_GetValue(hsdadc);

    printf("%d\n", rawAnalogValueI);

 }

 //---------------------------------------------------------------------------------------------------------pourquoi redéfinir convcpltcallback?

 void ErrorDisplay (char * strLine)

 {

  printf ("%s", strLine);

  while (1)

    {

    }

 }

#define V_REF_CTSR03P  0.0

#define V_OFFSET_CTSR03P  0.01

#define GAIN_CTSR03P 0.235

float getIntensity (void)

{

 float analogValueI;

 float analogValueISensorOutput;

 float gainSDAC1 = 1.0;

 HAL_SDADC_Start(&hsdadc1);

 HAL_SDADC_ConvCpltCallback(&hsdadc1);

 HAL_SDADC_Stop(&hsdadc1);

 // Convertion binaire / tension (SDADC)

 analogValueISensorOutput = ((float) rawAnalogValueI + 32767) * 3.3 / (gainSDAC1 * (2.0 * 32767.0));

 // Convertion tension / courant (CTSR03P)

 analogValueI = (((analogValueISensorOutput - V_OFFSET_CTSR03P) * GAIN_CTSR03P)*251.18) - 623.95;

 //printf ("%+05d|%f|%f\r\n", rawAnalogValueI, analogValueISensorOutput, analogValueI);

 printf("%d\n", rawAnalogValueI);

 printf("%f\n", analogValueISensorOutput);

 printf("%f\n\n", analogValueI);

 return analogValueI;

}

 /* USER CODE END 1 */

 /* MCU Configuration--------------------------------------------------------*/

 /* Reset of all peripherals, Initializes the Flash interface and the Systick. */

 HAL_Init();

 /* USER CODE BEGIN Init */

 /* USER CODE END Init */

 /* Configure the system clock */

 SystemClock_Config();

 /* USER CODE BEGIN SysInit */

 /* USER CODE END SysInit */

 /* Initialize all configured peripherals */

 MX_GPIO_Init();

 MX_SDADC1_Init();

 MX_USART2_UART_Init();

 MX_ADC1_Init();

 /* USER CODE BEGIN 2 */

 if (HAL_SDADC_CalibrationStart(&hsdadc1, SDADC_CALIBRATION_SEQ_1) != HAL_OK)

   {

       ErrorDisplay ((uint8_t*)"Fail to calibrate hsdadc1\r\n");

   }

   else

   {

     printf("La calibration a ete faite\n");

   }

 HAL_SDADC_CalibrationCpltCallback(&hsdadc1);

 /* USER CODE END 2 */

 /* Infinite loop */

 /* USER CODE BEGIN WHILE */

 while (1)

 {

  printf("yo\n");

  getIntensity();

  HAL_Delay(5000);

   /* USER CODE END WHILE */

   /* USER CODE BEGIN 3 */

 }

 /* USER CODE END 3 */

}

Do you know what i have done wrong? If you need the ioc or the rest of the code please tell me.

Thank you for your time,