stm32cubemx外部中断按钮测试

谁刺我心2025-12-27 14:04

main.c

cpp 复制代码 
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2025 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "adc.h"
#include "tim.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "led_test.h"
#include "exti_key.h"

/* 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 */

/* 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_TIM2_Init();
  MX_ADC1_Init();
  MX_USART2_UART_Init();
  /* USER CODE BEGIN 2 */
	
	LED_Init();
	key_init();
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
		
		
		//LED1_ON
		//LED2_ON
		//HAL_Delay(10);
    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {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.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_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();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC;
  PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV6;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}

/* USER CODE BEGIN 4 */
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	
    
    if(GPIO_Pin == Key1_Pin)
    {
       
            if(Key1()==0)  // ????
            {
                //HAL_GPIO_TogglePin(LED1_GPIO, LED1_PIN);  // ??LED1
							LED1_ON
							LED2_OFF
            }
       
    }
    else if(GPIO_Pin == Key2_Pin)
    {
            if(Key2()==0)  // ????
            {
                //HAL_GPIO_TogglePin(LED2_GPIO, LED2_PIN);  // ??LED
							LED2_ON
							LED1_OFF
            }
        
    }
		else if(GPIO_Pin == Key3_Pin)
    {
            if(Key3()==0)  // ????
            {
                //HAL_GPIO_TogglePin(LED2_GPIO, LED2_PIN);  // ??LED
							LED2_ON
							LED1_OFF
            }
        
    }
}
/* 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 */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/

exti_key.c

cpp 复制代码 
#include "exti_key.h"

uint8_t key1_val = 0;
uint8_t key2_val = 0;



void key_init(void)
{
    // 定义GPIO的结构体变量
	GPIO_InitTypeDef GPIO_InitStruct = {0};

	// 使能按键的GPIO对应的时钟
	KEY1_GPIO_CLK_EN();
	KEY2_GPIO_CLK_EN();
	KEY3_GPIO_CLK_EN();

	GPIO_InitStruct.Pin = Key1_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;  // 设置为双边沿触发外部中断
	GPIO_InitStruct.Pull = GPIO_PULLUP;                 // 默认上拉
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;       // 引脚反转速度设置为快

	// 初始化引脚配置
	HAL_GPIO_Init(Key1_GPIO_Port, &GPIO_InitStruct);


	GPIO_InitStruct.Pin = Key2_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;  // 设置为双边沿触发外部中断
	GPIO_InitStruct.Pull = GPIO_PULLUP;                 // 默认上拉
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;       // 引脚反转速度设置为快

	// 初始化引脚配置
	HAL_GPIO_Init(Key2_GPIO_Port, &GPIO_InitStruct);
	
	GPIO_InitStruct.Pin = Key3_Pin;
	GPIO_InitStruct.Mode = GPIO_MODE_IT_RISING_FALLING;  // 设置为双边沿触发外部中断
	GPIO_InitStruct.Pull = GPIO_PULLUP;                 // 默认上拉
	GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;       // 引脚反转速度设置为快

	// 初始化引脚配置
	HAL_GPIO_Init(Key3_GPIO_Port, &GPIO_InitStruct);
	
//	HAL_NVIC_SetPriority(EXTI0_IRQn, 5, 0);// 设置外部中断优先级
//	HAL_NVIC_EnableIRQ(EXTI0_IRQn);// 使能外部中断
	
	HAL_NVIC_SetPriority(EXTI15_10_IRQn, 5, 0);  // 设置外部中断优先级
    HAL_NVIC_EnableIRQ(EXTI15_10_IRQn);         // 使能外部中断
	
	HAL_NVIC_SetPriority(EXTI4_IRQn, 5, 0);// 设置外部中断优先级
	HAL_NVIC_EnableIRQ(EXTI4_IRQn);// 使能外部中断
	
	HAL_NVIC_SetPriority(EXTI3_IRQn, 5, 0);// 设置外部中断优先级
	HAL_NVIC_EnableIRQ(EXTI3_IRQn);// 使能外部中断
}

// 在stm32f1xx_it.c中
// 删除原来的EXTI0_IRQHandler，添加EXTI15_10_IRQHandler
void EXTI15_10_IRQHandler(void)
{
    HAL_GPIO_EXTI_IRQHandler(Key1_Pin);  // 处理PC13引脚的中断
}

//外部中断4中断处理函数
void EXTI4_IRQHandler(void)
{
    HAL_GPIO_EXTI_IRQHandler(Key2_Pin);
}

//外部中断3中断处理函数
void EXTI3_IRQHandler(void)
{
    HAL_GPIO_EXTI_IRQHandler(Key3_Pin);
}

//返回key1按键值
uint8_t Getkey1val(void)
{
	return key1_val;
}

//返回key2按键值
uint8_t Getkey2val(void)
{
	return key2_val;
}

//外部中断回调函数  放在main.c  while(1){}下面

/**************点击clicked******************/
//Define global variables in the main. c file
//@variables : uint8_t key_id=0;
/*
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	if(GPIO_Pin == Key1_Pin)
	{
		if(Key1()==0)
		{
			//key_id=1;
			//content
		}
	}
	else if(GPIO_Pin == Key2_Pin)
	{
		if(Key1()==0)
		{
			//key_id=2;
			//content
		}
	}
}


*/

/**************按下弹起一次切换状态******************/
//Define global variables in the main. c file
//@variables : uint8_t key_id=0;
//@variables : uint8_t led1_state=0;
//@variables : uint8_t led2_state=0;
/*
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
	if(GPIO_Pin == Key1_Pin)
	{
		if(Key1()==0)
		{
			key_id=1;
			led1_state=!led1_state;
		}
	}
	else if(GPIO_Pin == Key2_Pin)
	{
		if(Key1()==0)
		{
			key_id=2;
			led2_state=!led2_state;
		}
	}
}
*/

/*定时器中断函数*/
/**
  * @brief  计数达到指定时进入中断
	* @param  HAL_TIM_Base_Start_IT(TIM_HandleTypeDef *htim);//开启中断
	* @param	//HAL_TIM_Base_Start_IT(&htim3);//定时器中断开启
	* @param	void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)//中断处理
  * @note   中断时间(单位s)=(PSC+1)*(ARR+1)/SYSCLK【一般72Mhz 72,000,000】
  *         例(1)如：PSC  7200-1    ARR   50000-1
  *         	中断时间(单位s)=7200*50000/72,000,000=5s
  *         例(2)如：PSC  7200-1    ARR   1000-1
  *         	中断时间(单位s)=7200*1000/72,000,000=0.1s
  */
/*
void HAL_TIM_PeriodElapsedCallback(TIM_HandleTypeDef *htim)
{
	if(htim==&htim2) //如例1就是每5秒进入一次中断  例2就是每0.1秒进入一次中断
	{
		//HAL_GPIO_TogglePin(GPIOC, GPIO_PIN_1);
		//LED2_Share;
		Timers_second++;//在main.cpp里定义 volatile uint8_t Timers_second=0;
		if(Timers_second>=2)// 5*2  0.1*2      如果>=20  5*20 0.1*20=2秒
		{
			Timers_second=0;
			if(TS>=compare_ts||PH>=compare_ph)
			{
				alarm_flag=1;
				
			}
				
			flag=1;
		}
	}
}
*/

exti_key.h

cpp 复制代码 
#ifndef __EXTI_KEY_H
#define __EXTI_KEY_H

#include "main.h"

#define Key1_Pin 				GPIO_PIN_13
#define Key2_Pin 				GPIO_PIN_4
#define Key3_Pin 				GPIO_PIN_3

#define Key1_GPIO_Port 							GPIOC
#define Key2_GPIO_Port 							GPIOA
#define Key3_GPIO_Port 							GPIOA

#define KEY1_GPIO_CLK_EN()          __HAL_RCC_GPIOC_CLK_ENABLE()
#define KEY2_GPIO_CLK_EN()          __HAL_RCC_GPIOA_CLK_ENABLE()
#define KEY3_GPIO_CLK_EN()          __HAL_RCC_GPIOA_CLK_ENABLE()

#define Key1()     HAL_GPIO_ReadPin(Key1_GPIO_Port, Key1_Pin) //
#define Key2()     HAL_GPIO_ReadPin(Key2_GPIO_Port, Key2_Pin) //
#define Key3()     HAL_GPIO_ReadPin(Key3_GPIO_Port, Key3_Pin) //

uint8_t Getkey1val(void);
uint8_t Getkey2val(void);

void key_init(void);

#endif
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