HAL STM32通过multi_button库处理按键事件

HAL STM32通过multi_button库处理按键事件

  • 📍作者：0x1abin的multi_button库:https://github.com/0x1abin/MultiButton

📘MultiButton简介

MultiButton 是一个小巧简单易用的事件驱动型按键驱动模块，可无限量扩展按键，按键事件的回调异步处理方式可以简化你的程序结构，去除冗余的按键处理硬编码，让你的按键业务逻辑更清晰。

  • 🔖 该库驱动代码纯C语言实现，可以移植到任意需要使用的地方。

🔑使用方法

  1. 先申请一个按键结构
struct Button button1;
  1. 初始化按键对象，绑定按键的GPIO电平读取接口read_button_pin() ，后一个参数设置有效触发电平。
button_init(&button1, read_button_pin, 0, 0);//绑定按键，读取按键引脚状态，有效触发电平、按键ID
  1. 注册按键事件
button_attach(&button1, SINGLE_CLICK, Callback_SINGLE_CLICK_Handler);
button_attach(&button1, DOUBLE_CLICK, Callback_DOUBLE_Click_Handler);

…
4. 启动按键

button_start(&button1);
  1. 设置一个5ms间隔的定时器循环调用后台处理函数
while(1) {
    ...
    if(timer_ticks == 5) {
        timer_ticks = 0;

        button_ticks();
    }
}

🛠按键引脚配置

  • 🌿通过STM32CubeMX，将按键引脚配置成上拉，那么有效触发电平就需要设置为0.
    在这里插入图片描述

📗通过按键事件查询，获取按键状态

  • 🌿在滴答定时器中断函数（SysTick_Handler）中添加button_tick();
/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 "usart.h"
#include "usb_device.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include <stdarg.h>
#include "usbd_cdc_if.h"
#include "multi_button.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 */
struct Button btn1;
/* 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 usb_printf(const char *fmt, ...)
{
    char buf[128];//自定义缓冲区大小
    va_list args;
    va_start(args, fmt);
    vsnprintf(buf, sizeof(buf), fmt, args);
    va_end(args);
    CDC_Transmit_FS((uint8_t *)buf, strlen(buf));
}



void button_tick(void)
{
    static uint8_t tickstart = 0;
    tickstart++;
    if(tickstart < 5)
        return;
    tickstart = 0;
    button_ticks();
}
//按键状态读取接口  按键输入模式 ReadInputDataBit
uint8_t Read_Button_GPIO(uint8_t button_id)
{
    // you can share the GPIO read function with multiple Buttons
    switch(button_id) {
        case 1:
            return HAL_GPIO_ReadPin(KEY1_GPIO_Port, KEY1_Pin);
				case 2:
            return HAL_GPIO_ReadPin(KEY2_GPIO_Port, KEY2_Pin);
        default:
            return 0;
    }
}


/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
    /* USER CODE BEGIN 1 */
    uint32_t TimerUART;
    static PressEvent btn1_event_val;


    /* 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_USART1_UART_Init();
    MX_USB_DEVICE_Init();
    /* USER CODE BEGIN 2 */
    uint32_t Main_Fosc = HAL_RCC_GetSysClockFreq();
    printf("Main_Fosc:%dHz \r\n", Main_Fosc);
    TimerUART = HAL_GetTick();
    usb_printf("STM32F427 SysClockFreq:%d \r\n", Main_Fosc);
    button_init(&btn1, Read_Button_GPIO, 0, 1);
    button_start(&btn1);
  
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while(1) {
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
        if((HAL_GetTick() - TimerUART) > 1000) {
            HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin | LED2_Pin | LED3_Pin); //翻转电平，LED翻转
            printf("STM32F427 SysClockFreq:%d \r\n", Main_Fosc);
            usb_printf("STM32F427 SysClockFreq:%d \r\n", Main_Fosc);
            TimerUART = HAL_GetTick();
        }
        if(btn1_event_val != get_button_event(&btn1)) {
            btn1_event_val = get_button_event(&btn1);

            if(btn1_event_val == PRESS_DOWN) {
                // printf("STM32F427 KEY1 PRESS_DOWN \r\n");
                usb_printf("STM32F427 KEY1 PRESS_DOWN \r\n");
            } else if(btn1_event_val == PRESS_UP) {
                // printf("STM32F427 KEY1 PRESS_UP \r\n");
                usb_printf("STM32F427 KEY1 PRESS_UP \r\n");
            } else if(btn1_event_val == LONG_PRESS_HOLD) {
                // printf("STM32F427 LONG_PRESS_HOLD\r\n"/);
                usb_printf("STM32F427 LONG_PRESS_HOLD\r\n");
            }
        }
    }
    /* 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_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);

    /** 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_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLM = 16;
    RCC_OscInitStruct.PLL.PLLN = 384;
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
    RCC_OscInitStruct.PLL.PLLQ = 8;
    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_DIV4;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

    if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != 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 */

📓通过注册按键事件，获取按键状态

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 "usart.h"
#include "usb_device.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include <stdarg.h>
#include "usbd_cdc_if.h"
#include "multi_button.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 */
struct Button btn1;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
void BTN1_PRESS_DOWN_Handler(void* btn);
void BTN1_PRESS_UP_Handler(void* btn);
void BTN1_SINGLE_Click_Handler(void* btn);
void BTN1_DOUBLE_Click_Handler(void* btn);
void BTN1_LONG_RRESS_START_Handler(void* btn);
void BTN1_LONG_PRESS_HOLD_Handler(void* btn);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void usb_printf(const char *fmt, ...)
{
    char buf[128];//自定义缓冲区大小
    va_list args;
    va_start(args, fmt);
    vsnprintf(buf, sizeof(buf), fmt, args);
    va_end(args);
    CDC_Transmit_FS((uint8_t *)buf, strlen(buf));
}



void button_tick(void)
{
    static uint8_t tickstart = 0;
    tickstart++;
    if(tickstart < 5)
        return;
    tickstart = 0;
    button_ticks();
}
//按键状态读取接口  按键输入模式 ReadInputDataBit
uint8_t Read_Button_GPIO(uint8_t button_id)
{
    // you can share the GPIO read function with multiple Buttons
    switch(button_id) {
        case 1:
            return HAL_GPIO_ReadPin(KEY1_GPIO_Port, KEY1_Pin);
        case 2:
            return HAL_GPIO_ReadPin(KEY2_GPIO_Port, KEY2_Pin);
        default:
            return 0;
    }
}


/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
    /* USER CODE BEGIN 1 */
    uint32_t TimerUART;
    // static PressEvent btn1_event_val;


    /* 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_USART1_UART_Init();
    MX_USB_DEVICE_Init();
    /* USER CODE BEGIN 2 */
    uint32_t Main_Fosc = HAL_RCC_GetSysClockFreq();
    printf("Main_Fosc:%dHz \r\n", Main_Fosc);
    TimerUART = HAL_GetTick();
    usb_printf("STM32F427 SysClockFreq:%d \r\n", Main_Fosc);
    button_init(&btn1, Read_Button_GPIO, 0, 1);
    // button_attach(&btn1, PRESS_DOWN, BTN1_PRESS_DOWN_Handler); //按下
    // button_attach(&btn1, PRESS_UP, BTN1_PRESS_UP_Handler);  //按起
    //	button_attach(&btn1, PRESS_REPEAT,     BTN1_PRESS_REPEAT_Handler);
    button_attach(&btn1, SINGLE_CLICK, BTN1_SINGLE_Click_Handler); //单击
    button_attach(&btn1, DOUBLE_CLICK, BTN1_DOUBLE_Click_Handler);  //双击
    button_attach(&btn1, LONG_PRESS_START, BTN1_LONG_RRESS_START_Handler); //长按开始
    // button_attach(&btn1, LONG_PRESS_HOLD, BTN1_LONG_PRESS_HOLD_Handler);//一直长按状态
    button_start(&btn1);
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while(1) {
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
        if((HAL_GetTick() - TimerUART) > 1000) {
            HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin | LED2_Pin | LED3_Pin); //翻转电平，LED翻转
            printf("STM32F427 SysClockFreq:%d \r\n", Main_Fosc);
            usb_printf("STM32F427 SysClockFreq:%d \r\n", Main_Fosc);
            TimerUART = HAL_GetTick();
        }

    }
    /* 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_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);

    /** 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_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLM = 16;
    RCC_OscInitStruct.PLL.PLLN = 384;
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
    RCC_OscInitStruct.PLL.PLLQ = 8;
    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_DIV4;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

    if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) {
        Error_Handler();
    }
}

/* USER CODE BEGIN 4 */
void BTN1_PRESS_DOWN_Handler(void* btn)
{
    // printf("STM32F427 KEY1 PRESS_DOWN \r\n");
    usb_printf("STM32F427 KEY1 PRESS_DOWN \r\n");
}

void BTN1_PRESS_UP_Handler(void* btn)
{
    // printf("STM32F427 KEY1 PRESS_UP \r\n");
    usb_printf("STM32F427 KEY1 PRESS_UP \r\n");
}
void BTN1_SINGLE_Click_Handler(void* btn)
{
    // printf("STM32F427 KEY1 SINGLE_Click \r\n");
    usb_printf("STM32F427 KEY1 SINGLE_Click \r\n");
}
void BTN1_DOUBLE_Click_Handler(void* btn)
{
    // printf("STM32F427 KEY1 DOUBLE_Click \r\n");
    usb_printf("STM32F427 KEY1 DOUBLE_Click \r\n");
}
void BTN1_LONG_RRESS_START_Handler(void* btn)
{
    // printf("STM32F427 KEY1 LONG_RRESS_START \r\n");
    usb_printf("STM32F427 KEY1 LONG_RRESS_START \r\n");
}
void BTN1_LONG_PRESS_HOLD_Handler(void* btn)
{
    // printf("STM32F427 KEY1 LONG_PRESS_HOLD \r\n");
    usb_printf("STM32F427 KEY1 LONG_PRESS_HOLD \r\n");
}
/* 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 */

📝通过注册按键事件，统一查询获取按键状态

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 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 "usart.h"
#include "usb_device.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include <stdarg.h>
#include "usbd_cdc_if.h"
#include "multi_button.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 */
struct Button btn1;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
//void BTN1_PRESS_DOWN_Handler(void* btn);
//void BTN1_PRESS_UP_Handler(void* btn);
//void BTN1_SINGLE_Click_Handler(void* btn);
//void BTN1_DOUBLE_Click_Handler(void* btn);
//void BTN1_LONG_RRESS_START_Handler(void* btn);
//void BTN1_LONG_PRESS_HOLD_Handler(void* btn);
void button_callback(void *btn);//
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void usb_printf(const char *fmt, ...)
{
    char buf[128];//自定义缓冲区大小
    va_list args;
    va_start(args, fmt);
    vsnprintf(buf, sizeof(buf), fmt, args);
    va_end(args);
    CDC_Transmit_FS((uint8_t *)buf, strlen(buf));
}



void button_tick(void)
{
    static uint8_t tickstart = 0;
    tickstart++;
    if(tickstart < 5)
        return;
    tickstart = 0;
    button_ticks();
}
//按键状态读取接口  按键输入模式 ReadInputDataBit
uint8_t Read_Button_GPIO(uint8_t button_id)
{
    // you can share the GPIO read function with multiple Buttons
    switch(button_id) {
        case 1:
            return HAL_GPIO_ReadPin(KEY1_GPIO_Port, KEY1_Pin);
        case 2:
            return HAL_GPIO_ReadPin(KEY2_GPIO_Port, KEY2_Pin);
        default:
            return 0;
    }
}


/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
    /* USER CODE BEGIN 1 */
//    uint32_t TimerUART;
    // static PressEvent btn1_event_val;


    /* 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_USART1_UART_Init();
    MX_USB_DEVICE_Init();
    /* USER CODE BEGIN 2 */
    uint32_t Main_Fosc = HAL_RCC_GetSysClockFreq();
    printf("Main_Fosc:%dHz \r\n", Main_Fosc);
//    TimerUART = HAL_GetTick();
    usb_printf("STM32F427 SysClockFreq:%d \r\n", Main_Fosc);
    button_init(&btn1, Read_Button_GPIO, 0, 1);
    // button_attach(&btn1, PRESS_DOWN, button_callback); //按下
    // button_attach(&btn1, PRESS_UP, button_callback);  //按起
    //	button_attach(&btn1, PRESS_REPEAT,button_callback);
    button_attach(&btn1, SINGLE_CLICK, button_callback); //单击
    button_attach(&btn1, DOUBLE_CLICK, button_callback);  //双击
    button_attach(&btn1, LONG_PRESS_START, button_callback); //长按开始
    // button_attach(&btn1, LONG_PRESS_HOLD, button_callback);//一直长按状态
    button_start(&btn1);
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while(1) {
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
//        if((HAL_GetTick() - TimerUART) > 1000) {
//            HAL_GPIO_TogglePin(LED1_GPIO_Port, LED1_Pin | LED2_Pin | LED3_Pin); //翻转电平，LED翻转
//            printf("STM32F427 SysClockFreq:%d \r\n", Main_Fosc);
//            usb_printf("STM32F427 SysClockFreq:%d \r\n", Main_Fosc);
//            TimerUART = HAL_GetTick();
//        }
        /*
        if(btn1_event_val != get_button_event(&btn1)) {
        btn1_event_val = get_button_event(&btn1);

        if(btn1_event_val == PRESS_DOWN) {
        // printf("STM32F427 KEY1 PRESS_DOWN \r\n");
        usb_printf("STM32F427 KEY1 PRESS_DOWN \r\n");
        } else if(btn1_event_val == PRESS_UP) {
        // printf("STM32F427 KEY1 PRESS_UP \r\n");
        usb_printf("STM32F427 KEY1 PRESS_UP \r\n");
        } else if(btn1_event_val == LONG_PRESS_HOLD) {
        // printf("STM32F427 LONG_PRESS_HOLD\r\n"/);
        usb_printf("STM32F427 LONG_PRESS_HOLD\r\n");
        }

        }
        */
    }
    /* 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_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE3);

    /** 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_ON;
    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLM = 16;
    RCC_OscInitStruct.PLL.PLLN = 384;
    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
    RCC_OscInitStruct.PLL.PLLQ = 8;
    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_DIV4;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;

    if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) {
        Error_Handler();
    }
}

/* USER CODE BEGIN 4 */
void BTN1_PRESS_DOWN_Handler(void* btn)
{
    // printf("STM32F427 KEY1 PRESS_DOWN \r\n");
    usb_printf("STM32F427 KEY1 PRESS_DOWN \r\n");
}

void BTN1_PRESS_UP_Handler(void* btn)
{
    // printf("STM32F427 KEY1 PRESS_UP \r\n");
    usb_printf("STM32F427 KEY1 PRESS_UP \r\n");
}
void BTN1_SINGLE_Click_Handler(void* btn)
{
    // printf("STM32F427 KEY1 SINGLE_Click \r\n");
    usb_printf("STM32F427 KEY1 SINGLE_Click \r\n");
}
void BTN1_DOUBLE_Click_Handler(void* btn)
{
    // printf("STM32F427 KEY1 DOUBLE_Click \r\n");
    usb_printf("STM32F427 KEY1 DOUBLE_Click \r\n");
}
void BTN1_LONG_RRESS_START_Handler(void* btn)
{
    // printf("STM32F427 KEY1 LONG_RRESS_START \r\n");
    usb_printf("STM32F427 KEY1 LONG_RRESS_START \r\n");
}
void BTN1_LONG_PRESS_HOLD_Handler(void* btn)
{
    // printf("STM32F427 KEY1 LONG_PRESS_HOLD \r\n");
    usb_printf("STM32F427 KEY1 LONG_PRESS_HOLD \r\n");
}

void button_callback(void *btn)
{
static PressEvent btn1_event_val;
//    uint32_t btn_event_val;    
//    btn_event_val = get_button_event((struct Button *)btn);
//	btn_event_val = get_button_event(&btn1);
if(btn1_event_val != get_button_event(&btn1)) {
			btn1_event_val = get_button_event(&btn1);
    switch(btn1_event_val)
    {
      case PRESS_DOWN:
          printf("---> KEY1 press down! <---\r\n"); 
			usb_printf("---> KEY1 press down! <---\r\n"); 
      break; 

      case PRESS_UP: 
          printf("***> KEY1 press up! <***\r\n");
			usb_printf("---> KEY1 press up! <---\r\n");
      break; 

      case PRESS_REPEAT: 
          printf("---> KEY1 press repeat! <---\r\n");
      break; 

      case SINGLE_CLICK: 
          printf("---> KEY1 single click! <---\r\n");
			usb_printf("---> KEY1 single click! <---\r\n");
      break; 

      case DOUBLE_CLICK: 
          printf("***> KEY1 double click! <***\r\n");
			usb_printf("---> KEY1 double click! <---\r\n");
      break; 

      case LONG_PRESS_START: 
          printf("---> KEY1 long press start! <---\r\n");
					usb_printf("---> KEY1 long press start! <---\r\n");
      break; 

      case LONG_PRESS_HOLD: 
          printf("***> KEY1 long press hold! <***\r\n");
					usb_printf("---> KEY1 press down! <---\r\n");
      break; 
			default:
			break;
	}
}
}
/* 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 */

📚相关测试工程

链接：https://pan.baidu.com/s/1DRqSkKnj6Kznh3izOLrlWQ?pwd=awf4 
提取码：awf4

链接：https://pan.baidu.com/s/1rviDB1MHQTQZkIBr590wXQ?pwd=11tu 
提取码：11tu

链接：https://pan.baidu.com/s/1GkQE7OZJnBn8t6gNXMahEw?pwd=vhw5 
提取码：vhw5

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