[STM32] STM32F429 GPIO 인터럽트 입력 제어 - HAL 라이브러리

/**
  ******************************************************************************
  * File Name          : main.c
  * Description        : Main program body
  ******************************************************************************
  *
  * COPYRIGHT(c) 2015 STMicroelectronics
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *   1. Redistributions of source code must retain the above copyright notice,
  *      this list of conditions and the following disclaimer.
  *   2. Redistributions in binary form must reproduce the above copyright notice,
  *      this list of conditions and the following disclaimer in the documentation
  *      and/or other materials provided with the distribution.
  *   3. Neither the name of STMicroelectronics nor the names of its contributors
  *      may be used to endorse or promote products derived from this software
  *      without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  ******************************************************************************
  */
/* Includes ------------------------------------------------------------------*/
#include "stm32f4xx_hal.h"
 
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
/* Private variables ---------------------------------------------------------*/
 
/* USER CODE BEGIN PV */
/* Private variables ---------------------------------------------------------*/
 
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
 
 
 
 
static void EXTILine0_Config(void)
{
  GPIO_InitTypeDef   GPIO_InitStructure;
 
  /* Enable GPIOA clock */
  __HAL_RCC_GPIOA_CLK_ENABLE(); // 클록 ENABLE
  
  /* Configure PA0 pin as input floating */
  GPIO_InitStructure.Mode = GPIO_MODE_IT_FALLING;       // 해당핀을 인터럽트 폴링시 발생시킴
  GPIO_InitStructure.Pull = GPIO_NOPULL;                
  GPIO_InitStructure.Pin = GPIO_PIN_0;                  
  HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
 
  /* Enable and set EXTI Line0 Interrupt to the lowest priority */
  HAL_NVIC_SetPriority(EXTI0_IRQn, 2, 0);               // 0번 라인을 우선순위 설정, 버튼이 PA0번이므로               
  HAL_NVIC_EnableIRQ(EXTI0_IRQn);                       // 0번 라인 인터럽트 활성화
}
 
 
 
 
void EXTI0_IRQHandler(void)     // EXTI0 인터럽트 발생시 호출되는 함수
{
  HAL_GPIO_EXTI_IRQHandler(GPIO_PIN_0); // 이 함수 안에서 해당 인터럽트를 클리어 하고 콜백함수를 호출해줌
}
 
 
 
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)  // HAL_GPIO_EXTI_IRQHandler함수에서 해당 인터럽트를 클리어하고 호출되는 콜백 함수
{
    HAL_GPIO_TogglePin(GPIOG, GPIO_PIN_14);
}
 
 
int main(void)
{
        
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
 
  /* Configure the system clock */
  SystemClock_Config();
 
  MX_GPIO_Init();       // 인터럽트 발생시 출력확인을 위한 GPIO 설정
 
  EXTILine0_Config();   // 인터럽트 설정
  
 
  HAL_GPIO_WritePin(GPIOG, GPIO_PIN_13, GPIO_PIN_SET);
  
  
          
  while (1)
  {
 
          
          
  }
  /* USER CODE END 3 */
 
}
 
/** System Clock Configuration
*/
void SystemClock_Config(void)
{
 
  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;
 
  __PWR_CLK_ENABLE();
 
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
 
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLM = 4;
  RCC_OscInitStruct.PLL.PLLN = 180;
  RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
  RCC_OscInitStruct.PLL.PLLQ = 4;
  HAL_RCC_OscConfig(&RCC_OscInitStruct);
 
  HAL_PWREx_ActivateOverDrive();
 
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK|RCC_CLOCKTYPE_PCLK1
                              |RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
 
  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
 
  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
 
  /* SysTick_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}
 
 
 
void MX_GPIO_Init(void)
{
 
  GPIO_InitTypeDef GPIO_InitStruct;
 
  /* GPIO Ports Clock Enable */
  __GPIOG_CLK_ENABLE();
 
  /*Configure GPIO pins : PG13 PG14 */
  GPIO_InitStruct.Pin = GPIO_PIN_13|GPIO_PIN_14;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_MEDIUM;
  HAL_GPIO_Init(GPIOG, &GPIO_InitStruct);
 
}
 
 
/* USER CODE BEGIN 4 */
 
/* USER CODE END 4 */
 
#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
 
/**
  * @}
  */ 
 
/**
  * @}
*/ 
 
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/