STM32G030F6 ADC channel 15 in a scan sequnce

[Opto_Roby]

Post edited by ST moderator to follow the community rule to post a code snippet: How to write your question to maximize your chances to find a solution

I need to use scan sequence of 3 ADC channel  and DMA transfer of the 3 ADC value .

The 3 channel are:

sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;

sConfig.Rank = ADC_REGULAR_RANK_1;

sConfig.Channel = ADC_CHANNEL_VREFINT;

sConfig.Rank = ADC_REGULAR_RANK_2;

sConfig.Channel = ADC_CHANNEL_15;

sConfig.Rank = ADC_REGULAR_RANK_3;

 

but doing this the HAL_ADC_ConvCpltCallback is called only once.

 

if I change the ADC_CHANNEL_15 with   ADC_CHANNEL_VREFINT  everything is working correct.

 

Why ?

 

[Ozone]

Not sure what you are doing here …
I suggest you post some more complete code section, but use the “code” option of the editor (hidden in the “...” item).
With the lines you post, you overwrite the “Channel” and “Rank” variables two times, so only the last value will take effect.
You can configure multiple channels at once, but not that way (I don’t use Cube, by the way).

Second, if you want to use DMA, don’t use an ADC interrupt or associated callback.
The ADC triggers DMA transfers directly, and you get your results via “transmission complete” interrupt (or callback).

[waclawek.jan]

I guess that you try to use the “fully programmable sequence mode”, and there you can use only channels 0 to 14.

JW

[Saket_Om]

Hello ​@Opto_Roby 

The configuration of channels is not correct in your code.

You should implement a sequence like below: 

/* Rank 1: Temp sensor */
sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;
sConfig.Rank = ADC_REGULAR_RANK_1;
HAL_ADC_ConfigChannel(&hadc1, &sConfig);

/* Rank 2: VREFINT */
sConfig.Channel = ADC_CHANNEL_VREFINT;
sConfig.Rank = ADC_REGULAR_RANK_2;
HAL_ADC_ConfigChannel(&hadc1, &sConfig);

/* Rank 3: CH15 */
sConfig.Channel = ADC_CHANNEL_15;
sConfig.Rank = ADC_REGULAR_RANK_3;
HAL_ADC_ConfigChannel(&hadc1, &sConfig);

Please refer to the example below:

STM32CubeG0/Projects/STM32G081B-EVAL/Examples/ADC/ADC_MultiChannelSingleConversion at master · STMicroelectronics/STM32CubeG0

[Opto_Roby]

Tkis Work

/* USER CODE BEGIN Header */

/**

******************************************************************************

* @file : main.c

* @brief : Main program body

******************************************************************************

* @attention

*

* Copyright (c) 2026 STMicroelectronics.

* All rights reserved.

*

* This software is licensed under terms that can be found in the LICENSE file

* in the root directory of this software component.

* If no LICENSE file comes with this software, it is provided AS-IS.

*

******************************************************************************

*/

/* USER CODE END Header */

/* Includes ------------------------------------------------------------------*/

#include "main.h"

 

/* Private includes ----------------------------------------------------------*/

/* USER CODE BEGIN Includes */

 

/* USER CODE END Includes */

 

/* Private typedef -----------------------------------------------------------*/

/* USER CODE BEGIN PTD */

 

/* USER CODE END PTD */

 

/* Private define ------------------------------------------------------------*/

/* USER CODE BEGIN PD */

#define N_CHANNEL 1

/* USER CODE END PD */

 

/* Private macro -------------------------------------------------------------*/

/* USER CODE BEGIN PM */

 

/* USER CODE END PM */

 

/* Private variables ---------------------------------------------------------*/

ADC_HandleTypeDef hadc1;

DMA_HandleTypeDef hdma_adc1;

 

/* USER CODE BEGIN PV */

 

volatile uint16_t ADC_Buffer[3]; // Temperature, VREFINT, ADC_CH15 (PA11 [PA9])

volatile uint32_t ADC_Temperature, ADC_VRef, ADC_PA11;

 

/* USER CODE END PV */

 

/* Private function prototypes -----------------------------------------------*/

void SystemClock_Config(void);

static void MX_GPIO_Init(void);

static void MX_DMA_Init(void);

static void MX_ADC1_Init(void);

/* USER CODE BEGIN PFP */

 

/* USER CODE END PFP */

 

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

/* USER CODE BEGIN 0 */

 

void HAL_ADC_ConvCpltCallback(ADC_HandleTypeDef *hadc)

{

if (hadc->Instance == ADC1)

{

ADC_Temperature = ADC_Buffer[0];

ADC_VRef = ADC_Buffer[1];

ADC_PA11 = ADC_Buffer[2];

SBRINATORE_GPIO_Port->BRR = (uint32_t)SBRINATORE_Pin;

}

}

 

 

/* USER CODE END 0 */

 

/**

* @brief The application entry point.

* @retval int

*/

int main(void)

{

 

/* USER CODE BEGIN 1 */

 

/* 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_DMA_Init();

MX_ADC1_Init();

/* USER CODE BEGIN 2 */

 

ADC->CCR |= ADC_CCR_VREFEN;

ADC->CCR |= ADC_CCR_TSEN;

 

HAL_ADCEx_Calibration_Start(&hadc1);

LED_G_GPIO_Port->BRR = (uint32_t)LED_G_Pin;

LED_R_GPIO_Port->BSRR = (uint32_t)LED_R_Pin;

 

/* USER CODE END 2 */

 

/* Infinite loop */

/* USER CODE BEGIN WHILE */

while (1)

{

/* USER CODE END WHILE */

 

/* USER CODE BEGIN 3 */

 

SBRINATORE_GPIO_Port->BSRR = (uint32_t)SBRINATORE_Pin;

HAL_ADC_Start_DMA(&hadc1, (uint32_t*)ADC_Buffer, N_CHANNEL);

while ( HAL_GPIO_ReadPin(SBRINATORE_GPIO_Port, SBRINATORE_Pin) == GPIO_PIN_SET)

;

}

/* USER CODE END 3 */

}

 

/**

* @brief System Clock Configuration

* @retval None

*/

void SystemClock_Config(void)

{

RCC_OscInitTypeDef RCC_OscInitStruct = {0};

RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

 

/** Configure the main internal regulator output voltage

*/

HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1);

 

/** Initializes the RCC Oscillators according to the specified parameters

* in the RCC_OscInitTypeDef structure.

*/

RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;

RCC_OscInitStruct.HSIState = RCC_HSI_ON;

RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1;

RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;

RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;

RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1;

RCC_OscInitStruct.PLL.PLLN = 8;

RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;

RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;

if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)

{

Error_Handler();

}

 

/** Initializes the CPU, AHB and APB buses clocks

*/

RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK

|RCC_CLOCKTYPE_PCLK1;

RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

 

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)

{

Error_Handler();

}

}

 

/**

* @brief ADC1 Initialization Function

* @param None

* @retval None

*/

static void MX_ADC1_Init(void)

{

 

/* USER CODE BEGIN ADC1_Init 0 */

 

/* USER CODE END ADC1_Init 0 */

 

ADC_ChannelConfTypeDef sConfig = {0};

 

/* USER CODE BEGIN ADC1_Init 1 */

 

/* USER CODE END ADC1_Init 1 */

 

/** Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion)

*/

hadc1.Instance = ADC1;

hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV2;

hadc1.Init.Resolution = ADC_RESOLUTION_12B;

hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;

hadc1.Init.ScanConvMode = ADC_SCAN_ENABLE;

hadc1.Init.EOCSelection = ADC_EOC_SEQ_CONV;

hadc1.Init.LowPowerAutoWait = DISABLE;

hadc1.Init.LowPowerAutoPowerOff = DISABLE;

hadc1.Init.ContinuousConvMode = DISABLE;

hadc1.Init.NbrOfConversion = N_CHANNEL;

hadc1.Init.DiscontinuousConvMode = DISABLE;

hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;

hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;

hadc1.Init.DMAContinuousRequests = DISABLE;

hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;

hadc1.Init.SamplingTimeCommon1 = ADC_SAMPLETIME_1CYCLE_5;

hadc1.Init.SamplingTimeCommon2 = ADC_SAMPLETIME_160CYCLES_5;

hadc1.Init.OversamplingMode = DISABLE;

hadc1.Init.TriggerFrequencyMode = ADC_TRIGGER_FREQ_HIGH;

if (HAL_ADC_Init(&hadc1) != HAL_OK)

{

Error_Handler();

}

 

/** Configure Regular Channel

*/

sConfig.Channel = ADC_CHANNEL_TEMPSENSOR;

sConfig.Rank = ADC_REGULAR_RANK_1;

sConfig.SamplingTime = ADC_SAMPLINGTIME_COMMON_1;

if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)

{

Error_Handler();

}

#if N_CHANNEL > 1

/** Configure Regular Channel

*/

sConfig.Channel = ADC_CHANNEL_VREFINT;

sConfig.Rank = ADC_REGULAR_RANK_2;

if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)

{

Error_Handler();

}

 

/** Configure Regular Channel

*/

sConfig.Channel = ADC_CHANNEL_8;

sConfig.Rank = ADC_REGULAR_RANK_3;

if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)

{

Error_Handler();

}

#endif

/* USER CODE BEGIN ADC1_Init 2 */

 

/* USER CODE END ADC1_Init 2 */

 

}

 

/**

* Enable DMA controller clock

*/

static void MX_DMA_Init(void)

{

 

/* DMA controller clock enable */

__HAL_RCC_DMA1_CLK_ENABLE();

 

/* DMA interrupt init */

/* DMA1_Channel1_IRQn interrupt configuration */

HAL_NVIC_SetPriority(DMA1_Channel1_IRQn, 0, 0);

HAL_NVIC_EnableIRQ(DMA1_Channel1_IRQn);

 

}

 

/**

* @brief GPIO Initialization Function

* @param None

* @retval None

*/

static void MX_GPIO_Init(void)

{

GPIO_InitTypeDef GPIO_InitStruct = {0};

/* USER CODE BEGIN MX_GPIO_Init_1 */

 

/* USER CODE END MX_GPIO_Init_1 */

 

/* GPIO Ports Clock Enable */

__HAL_RCC_GPIOA_CLK_ENABLE();

__HAL_RCC_GPIOB_CLK_ENABLE();

 

/*Configure GPIO pin Output Level */

HAL_GPIO_WritePin(GPIOA, LED_R_Pin|LED_G_Pin|SBRINATORE_Pin, GPIO_PIN_RESET);

 

/*Configure GPIO pins : LED_R_Pin LED_G_Pin SBRINATORE_Pin */

GPIO_InitStruct.Pin = LED_R_Pin|LED_G_Pin|SBRINATORE_Pin;

GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;

GPIO_InitStruct.Pull = GPIO_NOPULL;

GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;

HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

 

/* USER CODE BEGIN MX_GPIO_Init_2 */

 

/* USER CODE END MX_GPIO_Init_2 */

}

 

/* USER CODE BEGIN 4 */

 

/* USER CODE END 4 */

 

/**

* @brief This function is executed in case of error occurrence.

* @retval None

*/

void Error_Handler(void)

{

/* USER CODE BEGIN Error_Handler_Debug */

/* User can add his own implementation to report the HAL error return state */

__disable_irq();

while (1)

{

}

/* USER CODE END Error_Handler_Debug */

}

#ifdef USE_FULL_ASSERT

/**

* @brief Reports the name of the source file and the source line number

* where the assert_param error has occurred.

* @param file: pointer to the source file name

* @param line: assert_param error line source number

* @retval None

*/

void assert_failed(uint8_t *file, uint32_t line)

{

/* USER CODE BEGIN 6 */

/* User can add his own implementation to report the file name and line number,

ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */

/* USER CODE END 6 */

}

#endif /* USE_FULL_ASSERT */

 

changing

sConfig.Channel = ADC_CHANNEL_8; with sConfig.Channel = ADC_CHANNEL_15;

 

non DMA callback are called.