[其他ST产品] STM32之关门狗

/* USER CODE BEGIN Header */

/**

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

  * [url=home.php?mod=space&uid=288409]@file[/url]           : main.c

  * [url=home.php?mod=space&uid=247401]@brief[/url]          : Main program body

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

  * @attention

  *

  * Copyright (c) 2023 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"

#include "iwdg.h"

#include "gpio.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 */

/* USER CODE END PD */

 

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

/* USER CODE BEGIN PM */

 

/* USER CODE END PM */

 

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

 

/* USER CODE BEGIN PV */

 

/* USER CODE END PV */

 

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

void SystemClock_Config(void);

/* USER CODE BEGIN PFP */

 

/* USER CODE END PFP */

 

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

/* USER CODE BEGIN 0 */

 

 

void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)

{

    //按键PA0触发的中断

    if(GPIO_Pin == GPIO_PIN_0){

        HAL_Delay(50);

        if(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0) == GPIO_PIN_RESET){

            HAL_IWDG_Refresh(&hiwdg);//喂狗

        }

    }

}

 

/* 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_IWDG_Init();

  /* USER CODE BEGIN 2 */

 

    HAL_NVIC_SetPriority(SysTick_IRQn,0,0);  //把滴答定时器的抢占优先级和响应优先级都设置为最高

 

    HAL_GPIO_WritePin(GPIOB,GPIO_PIN_9,GPIO_PIN_RESET);

    HAL_Delay(500);

    HAL_GPIO_WritePin(GPIOB,GPIO_PIN_9,GPIO_PIN_SET);

    HAL_Delay(500);

    

  /* USER CODE END 2 */

 

  /* Infinite loop */

  /* USER CODE BEGIN WHILE */

  while (1)

  {

    /* USER CODE END WHILE */

 

    /* USER CODE BEGIN 3 */

        //如果没喂狗的话，就不会执行该循环，即灯不会常亮

        HAL_GPIO_WritePin(GPIOB,GPIO_PIN_9,GPIO_PIN_RESET);

    

    }

  /* USER CODE END 3 */

}

 

/**

  * @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_LSI|RCC_OSCILLATORTYPE_HSE;

  RCC_OscInitStruct.HSEState = RCC_HSE_ON;

  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;

  RCC_OscInitStruct.HSIState = RCC_HSI_ON;

  RCC_OscInitStruct.LSIState = RCC_LSI_ON;

  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;

  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_CLOCKTYPE_PCLK2;

  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;

  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

 

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

  {

    Error_Handler();

  }

}

 

/* 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 */