STM32F4(LED)

最新推荐文章于 2025-05-05 15:13:11 发布

XinLiBK

最新推荐文章于 2025-05-05 15:13:11 发布

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分类专栏： STM32 文章标签： github stm32 led

本文链接：https://blog.youkuaiyun.com/u012325601/article/details/79028146

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本文介绍了如何在STM32F4项目中设计和管理LED驱动程序，以减少重复劳动。作者提供了GitHub仓库链接，指出程序结构设计的重要性，并列出了开发环境的配置，包括固件库、编译器、IDE和操作系统。LED驱动的修改主要涉及LED_Status枚举和源文件中的变量定义。

STM32F4(LED)

GitHub仓库：https://github.com/XinLiGitHub/STM32F4xx_LED_Example

PS：博文不再更新，后续更新会在GitHub仓库进行。

在实际的项目开发过程中，常常会遇到硬件电路的修改，然后修改的部分就需要修改驱动程序。想这样需求该来该去是程序员们最烦闷的事情（重复劳动痛不欲生啊~）。为了避免或减少重复劳动，就需要在程序的架构上下功夫。接下来以最常见的LED驱动程序为例，进行程序结构设计。

1，开发环境

1，固件库：STM32F4xx_DSP_StdPeriph_Lib_V1.8.0

2，编译器：ARMCC V5.06

3，IDE：Keil uVision5

4，操作系统：Windows 10 专业版

2，程序源码

LED.h文件

/**
  ******************************************************************************
  * @file    LED.h
  * @author  XinLi
  * @version v1.0
  * @date    24-October-2017
  * @brief   Header file for LED.c module.
  ******************************************************************************
  * @attention
  *
  * <h2><center>Copyright &copy; 2017 XinLi</center></h2>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  ******************************************************************************
  */

#ifndef __LED_H
#define __LED_H

#ifdef __cplusplus
extern "C" {
#endif

/* Header includes -----------------------------------------------------------*/
#include "stm32f4xx.h"

/* Macro definitions ---------------------------------------------------------*/
#define LEDn                      (4)

#define LED1_RCC_AHB1Periph_GPIO  RCC_AHB1Periph_GPIOC
#define LED1_GPIO                 GPIOC
#define LED1_GPIO_Pin             GPIO_Pin_0

#define LED2_RCC_AHB1Periph_GPIO  RCC_AHB1Periph_GPIOC
#define LED2_GPIO                 GPIOC
#define LED2_GPIO_Pin             GPIO_Pin_1

#define LED3_RCC_AHB1Periph_GPIO  RCC_AHB1Periph_GPIOB
#define LED3_GPIO                 GPIOB
#define LED3_GPIO_Pin             GPIO_Pin_3

#define LED4_RCC_AHB1Periph_GPIO  RCC_AHB1Periph_GPIOB
#define LED4_GPIO                 GPIOB
#define LED4_GPIO_Pin             GPIO_Pin_4

/* Type definitions ----------------------------------------------------------*/
typedef enum
{
  LED_Pin1 = 0,
  LED_Pin2 = 1,
  LED_Pin3 = 2,
  LED_Pin4 = 3
}LED_Pin;

typedef enum
{
  LED_Off = 0,
  LED_On  = 1
}LED_Status;

/* Variable declarations -----------------------------------------------------*/
/* Variable definitions ------------------------------------------------------*/
/* Function declarations -----------------------------------------------------*/
void LED_SetStatus(LED_Pin pin, LED_Status status);
LED_Status LED_GetStatus(LED_Pin pin);

/* Function definitions ------------------------------------------------------*/

#ifdef __cplusplus
}
#endif

#endif /* __LED_H */

LED.c文件

/**
  ******************************************************************************
  * @file    LED.c
  * @author  XinLi
  * @version v1.0
  * @date    24-October-2017
  * @brief   LED module driver.
  ******************************************************************************
  * @attention
  *
  * <h2><center>Copyright &copy; 2017 XinLi</center></h2>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  ******************************************************************************
  */

/* Header includes -----------------------------------------------------------*/
#include "LED.h"
#include <stdbool.h>

/* Macro definitions ---------------------------------------------------------*/
/* Type definitions ----------------------------------------------------------*/
/* Variable declarations -----------------------------------------------------*/
/* Variable definitions ------------------------------------------------------*/
static      GPIO_TypeDef *LED_GPIO[LEDn]                = {LED1_GPIO, LED2_GPIO, LED3_GPIO, LED4_GPIO};
static      uint16_t      LED_GPIO_Pin[LEDn]            = {LED1_GPIO_Pin, LED2_GPIO_Pin, LED3_GPIO_Pin, LED4_GPIO_Pin};
static      uint32_t      LED_RCC_AHB1Periph_GPIO[LEDn] = {LED1_RCC_AHB1Periph_GPIO, LED2_RCC_AHB1Periph_GPIO, LED3_RCC_AHB1Periph_GPIO, LED4_RCC_AHB1Periph_GPIO};
static __IO LED_Status    ledStatus[LEDn]               = {LED_Off, LED_Off, LED_Off, LED_Off};

/* Function declarations -----------------------------------------------------*/
static void LED_Init(void);

/* Function definitions ------------------------------------------------------*/

/**
  * @brief  Led initializes.
  * @param  None.
  * @return None.
  */
static void LED_Init(void)
{
  static bool init_flag = false;
  
  if(init_flag == false)
  {
    init_flag = true;
    
    for(int i = 0; i < LEDn; i++)
    {
      GPIO_InitTypeDef GPIO_InitStructure = {0};
      
      RCC_AHB1PeriphClockCmd(LED_RCC_AHB1Periph_GPIO[i], ENABLE);
      
      GPIO_InitStructure.GPIO_Pin   = LED_GPIO_Pin[i];
      GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_OUT;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
      GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
      GPIO_InitStructure.GPIO_PuPd  = GPIO_PuPd_UP;
      GPIO_Init(LED_GPIO[i], &GPIO_InitStructure);
      
      GPIO_WriteBit(LED_GPIO[i], LED_GPIO_Pin[i], (BitAction)LED_Off);
    }
  }
}

/**
  * @brief  Set led status.
  * @param  [in] pin:    That led.
  * @param  [in] status: Led status.
  * @return None.
  */
void LED_SetStatus(LED_Pin pin, LED_Status status)
{
  if(status != ledStatus[pin])
  {
    ledStatus[pin] = status;
    
    LED_Init();
    
    GPIO_WriteBit(LED_GPIO[pin], LED_GPIO_Pin[pin], (BitAction)status);
  }
}

/**
  * @brief  Get led status.
  * @param  [in] pin: That led.
  * @return Led status.
  */
LED_Status LED_GetStatus(LED_Pin pin)
{
  return ledStatus[pin];
}

main.c文件

/**
  ******************************************************************************
  * @file    main.c
  * @author  XinLi
  * @version v1.0
  * @date    24-October-2017
  * @brief   Main program body.
  ******************************************************************************
  * @attention
  *
  * <h2><center>Copyright &copy; 2017 XinLi</center></h2>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  *
  ******************************************************************************
  */

/* Header includes -----------------------------------------------------------*/
#include "main.h"
#include "Delay.h"
#include "LED.h"

/* Macro definitions ---------------------------------------------------------*/
/* Type definitions ----------------------------------------------------------*/
/* Variable declarations -----------------------------------------------------*/
/* Variable definitions ------------------------------------------------------*/
/* Function declarations -----------------------------------------------------*/
/* Function definitions ------------------------------------------------------*/

/**
  * @brief  Main program.
  * @param  None.
  * @return None.
  */
int main(void)
{
  for(;;)
  {
    Delay_ms(500);
    LED_SetStatus(LED_Pin1, LED_On);
    Delay_ms(500);
    LED_SetStatus(LED_Pin2, LED_On);
    Delay_ms(500);
    LED_SetStatus(LED_Pin1, LED_Off);
    Delay_ms(500);
    LED_SetStatus(LED_Pin2, LED_Off);
  }
}

3，注意

修改接口需要注意，LED的驱动方式和增减LED的个数。对应修改LED_Status枚举和源文件的变量定义。