STM32F030K6 _ external interrupt just 1/3 EXT line is function

Johan_mecatronique · ‎2025-07-15

Hi,

I try to use 6 external interrupts but only EXT4_15 is functionning. All is functionning correctly when i use HAL_GPIO_ReadPin() function without interrupts.

Thank you for your HELP

void EXTI0_1_IRQHandler(void)
{
  /* USER CODE BEGIN EXTI0_1_IRQn 0 */

  /* USER CODE END EXTI0_1_IRQn 0 */
  HAL_GPIO_EXTI_IRQHandler(EV5_Pin);
  HAL_GPIO_EXTI_IRQHandler(EV6_Pin);
  /* USER CODE BEGIN EXTI0_1_IRQn 1 */

  /* USER CODE END EXTI0_1_IRQn 1 */
}

/**
  * @brief This function handles EXTI line 2 and 3 interrupts.
  */
void EXTI2_3_IRQHandler(void)
{
  /* USER CODE BEGIN EXTI2_3_IRQn 0 */

  /* USER CODE END EXTI2_3_IRQn 0 */
  HAL_GPIO_EXTI_IRQHandler(EV89_Pin);
  /* USER CODE BEGIN EXTI2_3_IRQn 1 */

  /* USER CODE END EXTI2_3_IRQn 1 */
}

/**
  * @brief This function handles EXTI line 4 to 15 interrupts.
  */
void EXTI4_15_IRQHandler(void)
{
  /* USER CODE BEGIN EXTI4_15_IRQn 0 */

  /* USER CODE END EXTI4_15_IRQn 0 */
  HAL_GPIO_EXTI_IRQHandler(EV2_Pin);
  HAL_GPIO_EXTI_IRQHandler(EV14_Pin);
  HAL_GPIO_EXTI_IRQHandler(EV3_Pin);
  /* USER CODE BEGIN EXTI4_15_IRQn 1 */

  /* USER CODE END EXTI4_15_IRQn 1 */
}

The main.c with the callback function

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2025 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"

/*Paramètres systèmes*/
#define spike_voltage 24 /*Volts*/
#define spike_duration  20 /*ms*/
#define hold_voltage  9 /*Volts*/

/*Paramètres internes logiciels*/
/*Paramètres PWM pour Fclk = 16Mhz PSC = 0 soit FPWM 6024 Hz*/
#define ARR 2655
#define CRR_spike 2655
#define CRR_hold  ((hold_voltage* ARR / spike_voltage))
/*#define CRR_hold 996*/

volatile uint8_t cons_EV14_active = 0;
volatile uint8_t cons_EV2_active = 0;
volatile uint8_t cons_EV3_active = 0;
volatile uint8_t cons_EV89_active = 0;
volatile uint8_t cons_EV5_active = 0;
volatile uint8_t cons_EV6_active = 0;

volatile uint32_t t14 = 0;
volatile uint32_t t2 = 0;
volatile uint32_t t3 = 0;
volatile uint32_t t89 = 0;
volatile uint32_t t5 = 0;
volatile uint32_t t6 = 0;

/* 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 */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/
TIM_HandleTypeDef htim1;
TIM_HandleTypeDef htim3;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_TIM1_Init(void);
static void MX_TIM3_Init(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* 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_TIM1_Init();
  MX_TIM3_Init();
  /* USER CODE BEGIN 2 */
HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_2);
HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);
HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_2);
HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_1);
HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_4);
HAL_TIM_PWM_Start(&htim3, TIM_CHANNEL_3);
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /*EV14*/
	if (cons_EV14_active == 1) {
			if (HAL_GetTick() - t14 < spike_duration) {
				TIM1->CCR2 = CRR_spike;
			} else {
				TIM1->CCR2 = CRR_hold;
			}
		} else {
			TIM1->CCR2 = 0;
		}
	/*EV2*/
	if (cons_EV2_active == 1) {
			if (HAL_GetTick() - t2 < spike_duration) {
				TIM1->CCR1 = CRR_spike;
			} else {
				TIM1->CCR1 = CRR_hold;
			}
		} else {
			TIM1->CCR1 = 0;
		}
	
	/*EV3*/
	if (cons_EV3_active == 1) {
			if (HAL_GetTick() - t3 < spike_duration) {
				TIM3->CCR2 = CRR_spike;
			} else {
				TIM3->CCR2 = CRR_hold;
			}
		} else {
			TIM3->CCR2 = 0;
		}
	
	/*EV89*/
	if (cons_EV89_active == 1) {
			if (HAL_GetTick() - t89 < spike_duration) {
				TIM3->CCR1 = CRR_spike;
			} else {
				TIM3->CCR1 = CRR_hold;
			}
		} else {
			TIM3->CCR1 = 0;
		}
	
	/*EV5*/
	if (cons_EV5_active == 1) {
			if (HAL_GetTick() - t5 < spike_duration) {
				TIM3->CCR4 = CRR_spike;
			} else {
				TIM3->CCR4 = CRR_hold;
			}
		} else {
			TIM3->CCR4 = 0;
		}
	
	/*EV6*/
	if (cons_EV6_active == 1) {
			if (HAL_GetTick() - t6 < spike_duration) {
				TIM3->CCR3 = CRR_spike;
			} else {
				TIM3->CCR3 = CRR_hold;
			}
		} else {
			TIM3->CCR3 = 0;
		}
		HAL_Delay(1);
	/* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) {
	
	switch(GPIO_Pin)
	{
	/*EV14*/
	case EV14_Pin :
		if (!HAL_GPIO_ReadPin(GPIOA, EV14_Pin)) {
			cons_EV14_active = 1;
			TIM1->CCR2 = CRR_spike;
			t14 = HAL_GetTick();
		} else {
			cons_EV14_active = 0;
			TIM1->CCR2 = 0;
		}
		break;


	/*EV2*/
	case EV2_Pin :
		if (!HAL_GPIO_ReadPin(GPIOA, EV2_Pin)) {
			cons_EV2_active = 1;
			TIM1->CCR1 = CRR_spike;
			t2 = HAL_GetTick();
		} else {
			cons_EV2_active = 0;
			TIM1->CCR1 = 0;
		}
break;
	

/*EV3*/
	case EV3_Pin :
		if (!HAL_GPIO_ReadPin(GPIOA, EV3_Pin)) {
			cons_EV3_active = 1;
			TIM3->CCR2 = CRR_spike;
			t3 = HAL_GetTick();
		} else {
			cons_EV3_active = 0;
			TIM3->CCR2 = 0;
		}

	break;

/*EV89*/
	case EV89_Pin :
		if (!HAL_GPIO_ReadPin(GPIOA, EV89_Pin)) {
			cons_EV89_active = 1;
			TIM3->CCR1 = CRR_spike;
			t89 = HAL_GetTick();
		} else {
			cons_EV89_active = 0;
			TIM3->CCR1 = 0;
		}

	break;

/*EV5*/
	case EV5_Pin :
		if (!HAL_GPIO_ReadPin(GPIOA, EV5_Pin)) {
			cons_EV5_active = 1;
			TIM3->CCR4 = CRR_spike;
			t5 = HAL_GetTick();
		} else {
			cons_EV5_active = 0;
			TIM3->CCR4 = 0;
		}

	break;


/*EV6*/
	case EV6_Pin :
		if (!HAL_GPIO_ReadPin(GPIOA, EV6_Pin)) {
			cons_EV6_active = 1;
			TIM3->CCR3 = CRR_spike;
			t6 = HAL_GetTick();
		} else {
			cons_EV6_active = 0;
			TIM3->CCR3 = 0;
		}

	break;
	}
}



/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  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_HSE;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
  {
    Error_Handler();
  }
}

/**
  * @brief TIM1 Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_TIM1_Init(void)
{

  /* USER CODE BEGIN TIM1_Init 0 */

  /* USER CODE END TIM1_Init 0 */

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};
  TIM_BreakDeadTimeConfigTypeDef sBreakDeadTimeConfig = {0};

  /* USER CODE BEGIN TIM1_Init 1 */

  /* USER CODE END TIM1_Init 1 */
  htim1.Instance = TIM1;
  htim1.Init.Prescaler = 0;
  htim1.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim1.Init.Period = 2655;
  htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim1.Init.RepetitionCounter = 0;
  htim1.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim1) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim1, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_Init(&htim1) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim1, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 0;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCNPolarity = TIM_OCNPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  sConfigOC.OCIdleState = TIM_OCIDLESTATE_RESET;
  sConfigOC.OCNIdleState = TIM_OCNIDLESTATE_RESET;
  if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
  {
    Error_Handler();
  }
  sBreakDeadTimeConfig.OffStateRunMode = TIM_OSSR_DISABLE;
  sBreakDeadTimeConfig.OffStateIDLEMode = TIM_OSSI_DISABLE;
  sBreakDeadTimeConfig.LockLevel = TIM_LOCKLEVEL_OFF;
  sBreakDeadTimeConfig.DeadTime = 0;
  sBreakDeadTimeConfig.BreakState = TIM_BREAK_DISABLE;
  sBreakDeadTimeConfig.BreakPolarity = TIM_BREAKPOLARITY_HIGH;
  sBreakDeadTimeConfig.AutomaticOutput = TIM_AUTOMATICOUTPUT_DISABLE;
  if (HAL_TIMEx_ConfigBreakDeadTime(&htim1, &sBreakDeadTimeConfig) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM1_Init 2 */

  /* USER CODE END TIM1_Init 2 */
  HAL_TIM_MspPostInit(&htim1);

}

/**
  * @brief TIM3 Initialization Function
  * @PAram None
  * @retval None
  */
static void MX_TIM3_Init(void)
{

  /* USER CODE BEGIN TIM3_Init 0 */

  /* USER CODE END TIM3_Init 0 */

  TIM_ClockConfigTypeDef sClockSourceConfig = {0};
  TIM_MasterConfigTypeDef sMasterConfig = {0};
  TIM_OC_InitTypeDef sConfigOC = {0};

  /* USER CODE BEGIN TIM3_Init 1 */

  /* USER CODE END TIM3_Init 1 */
  htim3.Instance = TIM3;
  htim3.Init.Prescaler = 0;
  htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
  htim3.Init.Period = 2655;
  htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
  htim3.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_ENABLE;
  if (HAL_TIM_Base_Init(&htim3) != HAL_OK)
  {
    Error_Handler();
  }
  sClockSourceConfig.ClockSource = TIM_CLOCKSOURCE_INTERNAL;
  if (HAL_TIM_ConfigClockSource(&htim3, &sClockSourceConfig) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_Init(&htim3) != HAL_OK)
  {
    Error_Handler();
  }
  sMasterConfig.MasterOutputTrigger = TIM_TRGO_RESET;
  sMasterConfig.MasterSlaveMode = TIM_MASTERSLAVEMODE_DISABLE;
  if (HAL_TIMEx_MasterConfigSynchronization(&htim3, &sMasterConfig) != HAL_OK)
  {
    Error_Handler();
  }
  sConfigOC.OCMode = TIM_OCMODE_PWM1;
  sConfigOC.Pulse = 0;
  sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;
  sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;
  if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_1) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_2) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_3) != HAL_OK)
  {
    Error_Handler();
  }
  if (HAL_TIM_PWM_ConfigChannel(&htim3, &sConfigOC, TIM_CHANNEL_4) != HAL_OK)
  {
    Error_Handler();
  }
  /* USER CODE BEGIN TIM3_Init 2 */

  /* USER CODE END TIM3_Init 2 */
  HAL_TIM_MspPostInit(&htim3);

}

/**
  * @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_GPIOF_CLK_ENABLE();
  __HAL_RCC_GPIOA_CLK_ENABLE();
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /*Configure GPIO pins : PA1 PA2 PA4 PA5
                           PA11 */
  GPIO_InitStruct.Pin = GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_4|GPIO_PIN_5
                          |GPIO_PIN_11;
  GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);

  /* EXTI interrupt init*/
  HAL_NVIC_SetPriority(EXTI4_15_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI4_15_IRQn);

  /* 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 */

TDK · ‎2025-07-15

  HAL_NVIC_SetPriority(EXTI4_15_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI4_15_IRQn);

Looks like these lines are missing for EXTI0_1 and EXTI2_3.

If you feel a post has answered your question, please click "Accept as Solution".

View solution in original post

Andrew Neil · ‎2025-07-15

Welcome to the forum.

Please see How to write your question to maximize your chances to find a solution for best results.

What board are you using, and how are the interrupts triggered?

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

TDK · ‎2025-07-15

  HAL_NVIC_SetPriority(EXTI4_15_IRQn, 0, 0);
  HAL_NVIC_EnableIRQ(EXTI4_15_IRQn);

Looks like these lines are missing for EXTI0_1 and EXTI2_3.

If you feel a post has answered your question, please click "Accept as Solution".

Johan_mecatronique · ‎2025-07-16

Thank you!

1. [Part Number] STM32F030K6T6
2. [Environment] STM32cubemx6.14.1 + STM32CubeIDE Version: 1.18.03.

3. [Schematics] See the screenchot above. It's custum board. All is functionning correctly when i use HAL_GPIO_ReadPin() function without interrupts.
4. [Details] only EXT4_15 is functionning.
5. [Expected behavior] all external interrupts needs to be OK
6. [How to reproduce] Inputs are configured with pull-up resistor and Rising/Falling edge detection

Johan_mecatronique · ‎2025-07-16

I've done a quick test. It seems to be the good way : now all is functionning except EV5 (PA0_Pin). I will do more verification tomorow.

Thank you

Andrew Neil · ‎2025-07-16

@Johan_mecatronique wrote:
3. [Schematics] See the screenchot above. It's custum board.

That's not a schematic - that's just the CubeMX pinout.

That tells us nothing about the external hardware & connections.

You need to show the schematic of your board - ie how the STM32 is connected to the rest of your system.

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.

Johan_mecatronique · ‎2025-07-17

Thank for your Help!

All ISR are functioning now