目录

1.简介

2.硬件环境

3.创建基础工程

3.1 CubeMX工程创建

4.工程修改

4.1 linux环境下初次编译

4.2 编写c++代码

4.3 makefile文件修改

4.C/C++项目构建

5.点亮LED

6.总结

1.简介

        本文介绍了如何在SMT32平台下构建C/C++混合编程项目，目的是将面向对象的思想应用到STM32的实际产品开发中去。对于STM32而言，实际开发主要使用的C语言，但如果在涉及到第三方库，且由C++实现时，通常情况下，在评估完系统资源使用后，一般会直接引用，不会再将其修改为C语言进行移植。而是借用编译工具链直接进行编译链接到自己的项目当中去。

        接下来，本文将介绍如何在linux环境下使用Makefile编译STM32的C/C++混合项目。

2.硬件环境

        小编这里使用的是STM32F407ZGT6单片机，开发板为韦东山的STM32最小系统开发板。当然，选择其他硬件平台方法方法是一样的，只是需要修改下其他的参数。

3.创建基础工程

        接下来，我们将借助STM32CubeMX工具为我们创建基础的makefile项目工程。关于STM32CudeMX的使用以及固件包的选择本文不再介绍，如有需要，请翱翔网络世界。

3.1 CubeMX工程创建

  • 新建工程

选中自己芯片的型号，然后start project

  • 项目管理

由于我们这里只需要创建makefile工程，引脚和配置项，时钟树按照默认的配置即可，跳过；如果在实际开发项目中，另有其他的需求，可以结合实际情况进行配置。

工具链选择Makefile

代码生成选择生成.c/.h文件

  • 点击生成代码

打开目录如下：

文件/目录 说明
Core 存放系统核心代码，包括主程序入口，配置文件，系统调用相关
Drivers 驱动文件
Makefile make构建文件
startup_stm32f407xx.s 启动汇编文件
STM32F407XX_FLASH.ld 链接文件

备注：Makefile文件后面会进行修改，仅关注MCU相关的配置

4.工程修改

4.1 linux环境下初次编译

        首先，将前面创建好的工程，拷贝到linux环境下，然后进行编译。

安装ARM GCC交叉编译工具链，包含了C编译器，C++编译器，链接器等所有必须的工具。

如果已经安装了，则在Makefile中修改为自己的工具链。

sudo apt install -y gcc-arm-none-eabi

进入到Base_c_c++目录，使用make命令编译，查看编译结果。

4.2 编写c++代码

        以gpio实现led等的点亮，熄灭为例。

新建CPP_Module目录，并创建leddev目录，实现leddev.cpp，leddev.hpp

CPP_Module/
└── leddev
    ├── leddev.cpp
    └── leddev.hpp

leddev.hpp

#pragma once
#include "main.h" // 这个头文件里已经包含了 extern "C" 保护

class LedDriver {
public:
    LedDriver(GPIO_TypeDef* port, uint16_t pin);
    void LedSwitch(uint8_t level);
private:
    GPIO_TypeDef* _port;
    uint16_t _pin;
};

leddev.cpp

#include "led.hpp"

// 构造函数
LedDriver::LedDriver(GPIO_TypeDef* port, uint16_t pin) 
    : _port(port), _pin(pin) {
    // 初始化 GPIO (调用 C 语言编写的 HAL 库)
    GPIO_InitTypeDef GPIO_InitStruct = {0};
    __HAL_RCC_GPIOF_CLK_ENABLE();
    
    GPIO_InitStruct.Pin = _pin;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Pull = GPIO_NOPULL;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(_port, &GPIO_InitStruct);
}

void LedDriver::LedSwitch(uint8_t level) {
    if (level) {
        HAL_GPIO_WritePin(_port, _pin, GPIO_PIN_SET);
    } else {
        HAL_GPIO_WritePin(_port, _pin, GPIO_PIN_RESET);
    }
}

// C 语言接口包装
extern "C" {
    static LedDriver* g_led_instance = nullptr;

    void LED0_Init(void) {
        if (!g_led_instance) {
            // led0 GPIOF9
            g_led_instance = new LedDriver(GPIOF, GPIO_PIN_9);
        }
    }

    void LED0_On(void){
        if (g_led_instance) {
            // 低电平点亮
            g_led_instance->LedSwitch(0);
        }
    }

    void LED0_Off(int level) {
        if (g_led_instance) {
            g_led_instance->LedSwitch(1);
        }
    }
}

重点：C函数调用C++函数在编译过程中没有定义#ifdef __cplusplu会出错，因此需要对C++函数包装为C语言接口

4.3 makefile文件修改

        由于我们的需求是项目支持C/C++代码的编译构建，因此，需要另外添加C源码的构建逻辑。

原makefile文件：

##########################################################################################################################
# File automatically-generated by tool: [projectgenerator] version: [4.9.0-B19] date: [Sat Mar 21 14:15:19 CST 2026]
##########################################################################################################################

# ------------------------------------------------
# Generic Makefile (based on gcc)
#
# ChangeLog :
#	2017-02-10 - Several enhancements + project update mode
#   2015-07-22 - first version
# ------------------------------------------------

######################################
# target
######################################
TARGET = Base_c_c++


######################################
# building variables
######################################
# debug build?
DEBUG = 1
# optimization
OPT = -Og


#######################################
# paths
#######################################
# Build path
BUILD_DIR = build

######################################
# source
######################################
# C sources
C_SOURCES =  \
Core/Src/main.c \
Core/Src/stm32f4xx_it.c \
Core/Src/stm32f4xx_hal_msp.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc_ex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash_ex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash_ramfunc.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma_ex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr_ex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_cortex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_exti.c \
Core/Src/system_stm32f4xx.c \
Core/Src/sysmem.c \
Core/Src/syscalls.c  

# ASM sources
ASM_SOURCES =  \
startup_stm32f407xx.s

# ASMM sources
ASMM_SOURCES = 



#######################################
# binaries
#######################################
PREFIX = arm-none-eabi-
# The gcc compiler bin path can be either defined in make command via GCC_PATH variable (> make GCC_PATH=xxx)
# either it can be added to the PATH environment variable.
ifdef GCC_PATH
CC = $(GCC_PATH)/$(PREFIX)gcc
AS = $(GCC_PATH)/$(PREFIX)gcc -x assembler-with-cpp
CP = $(GCC_PATH)/$(PREFIX)objcopy
SZ = $(GCC_PATH)/$(PREFIX)size
else
CC = $(PREFIX)gcc
AS = $(PREFIX)gcc -x assembler-with-cpp
CP = $(PREFIX)objcopy
SZ = $(PREFIX)size
endif
HEX = $(CP) -O ihex
BIN = $(CP) -O binary -S
 
#######################################
# CFLAGS
#######################################
# cpu
CPU = -mcpu=cortex-m4

# fpu
FPU = -mfpu=fpv4-sp-d16

# float-abi
FLOAT-ABI = -mfloat-abi=hard

# mcu
MCU = $(CPU) -mthumb $(FPU) $(FLOAT-ABI)

# macros for gcc
# AS defines
AS_DEFS = 

# C defines
C_DEFS =  \
-DUSE_HAL_DRIVER \
-DSTM32F407xx


# AS includes
AS_INCLUDES = 

# C includes
C_INCLUDES =  \
-ICore/Inc \
-IDrivers/STM32F4xx_HAL_Driver/Inc \
-IDrivers/STM32F4xx_HAL_Driver/Inc/Legacy \
-IDrivers/CMSIS/Device/ST/STM32F4xx/Include \
-IDrivers/CMSIS/Include


# compile gcc flags
ASFLAGS = $(MCU) $(AS_DEFS) $(AS_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections

CFLAGS += $(MCU) $(C_DEFS) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections

ifeq ($(DEBUG), 1)
CFLAGS += -g -gdwarf-2
endif


# Generate dependency information
CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"


#######################################
# LDFLAGS
#######################################
# link script
LDSCRIPT = STM32F407XX_FLASH.ld

# libraries
LIBS = -lc -lm -lnosys 
LIBDIR = 
LDFLAGS = $(MCU) -specs=nano.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections

# default action: build all
all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin


#######################################
# build the application
#######################################
# list of objects
OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
vpath %.c $(sort $(dir $(C_SOURCES)))
# list of ASM program objects
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
vpath %.s $(sort $(dir $(ASM_SOURCES)))
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASMM_SOURCES:.S=.o)))
vpath %.S $(sort $(dir $(ASMM_SOURCES)))

$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR) 
	$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@

$(BUILD_DIR)/%.o: %.s Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@
$(BUILD_DIR)/%.o: %.S Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@

$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) Makefile
	$(CC) $(OBJECTS) $(LDFLAGS) -o $@
	$(SZ) $@

$(BUILD_DIR)/%.hex: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(HEX) $< $@
	
$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(BIN) $< $@	
	
$(BUILD_DIR):
	mkdir $@		

#######################################
# clean up
#######################################
clean:
	-rm -fR $(BUILD_DIR)
  
#######################################
# dependencies
#######################################
-include $(wildcard $(BUILD_DIR)/*.d)

# *** EOF ***
  • 添加C++编译工具链
CXX = $(PREFIX)g++
  • C++标志
# C++ 文件使用 -std=gnu++17 (或 gnu++11)，注意不要使用异常和RTTI以节省空间
CXXFLAGS = $(MCU) $(C_DEFS) $(C_INCLUDES) -Wall -fdata-sections -ffunction-sections -Og -g3 -std=gnu++11 -fno-exceptions -fno-rtti
  • C++源文件
# C++ 源文件
CXX_SOURCES = \
  CPP_Module/leddev/leddev.cpp \
  # ... 添加其他 C++ 文件
  • C++自动生成文件对象列表
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(CXX_SOURCES:.cpp=.o)))
vpath %.cpp $(sort $(dir $(CXX_SOURCES)))
  • 编译C++文件
# 编译 C++ 文件
$(BUILD_DIR)/%.o: %.cpp Makefile | $(BUILD_DIR)
	$(CXX) -c $(CXXFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.cpp=.lst)) $< -o $@
  • 链接规则
# 链接规则：混合链接 C 和 C++ 对象文件
# 注意：这里使用 $(CXX) 进行链接，以确保链接到 C++ 标准库 runtime (如果需要)
# 如果完全不用 C++ 标准库特性，也可以用 $(CC)，但通常推荐用 $(CXX) 链接
$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) | $(BUILD_DIR)
	$(CXX) $(OBJECTS) $(LDFLAGS) -o $@
	$(SZ) $@
  • 完整Makefile如下
##########################################################################################################################
# File automatically-generated by tool: [projectgenerator] version: [4.9.0-B19] date: [Sat Mar 21 14:15:19 CST 2026]
##########################################################################################################################

# ------------------------------------------------
# Generic Makefile (based on gcc)
#
# ChangeLog :
#	2017-02-10 - Several enhancements + project update mode
#   2015-07-22 - first version
# ------------------------------------------------

######################################
# target
######################################
TARGET = Base_c_c++


######################################
# building variables
######################################
# debug build?
DEBUG = 1
# optimization
OPT = -Og


#######################################
# paths
#######################################
# Build path
BUILD_DIR = build

######################################
# source
######################################
# C sources
C_SOURCES =  \
Core/Src/main.c \
Core/Src/stm32f4xx_it.c \
Core/Src/stm32f4xx_hal_msp.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_rcc_ex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash_ex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_flash_ramfunc.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_gpio.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma_ex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_dma.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_pwr_ex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_cortex.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal.c \
Drivers/STM32F4xx_HAL_Driver/Src/stm32f4xx_hal_exti.c \
Core/Src/system_stm32f4xx.c \
Core/Src/sysmem.c \
Core/Src/syscalls.c  

# C++ 源文件
CXX_SOURCES = \
  CPP_Module/leddev/leddev.cpp \
  # ... 添加其他 C++ 文件

# ASM sources
ASM_SOURCES =  \
startup_stm32f407xx.s

# ASMM sources
ASMM_SOURCES = 



#######################################
# binaries
#######################################
PREFIX = arm-none-eabi-
# The gcc compiler bin path can be either defined in make command via GCC_PATH variable (> make GCC_PATH=xxx)
# either it can be added to the PATH environment variable.
ifdef GCC_PATH
CC = $(GCC_PATH)/$(PREFIX)gcc
CXX = $(GCC_PATH)/$(PREFIX)g++
AS = $(GCC_PATH)/$(PREFIX)gcc -x assembler-with-cpp
CP = $(GCC_PATH)/$(PREFIX)objcopy
SZ = $(GCC_PATH)/$(PREFIX)size
OBJDUMP = $(GCC_PATH)/$(PREFIX)objdump
else
CC = $(PREFIX)gcc
CXX = $(PREFIX)g++
AS = $(PREFIX)gcc -x assembler-with-cpp
CP = $(PREFIX)objcopy
SZ = $(PREFIX)size
OBJDUMP = $(PREFIX)objdump
endif
HEX = $(CP) -O ihex
BIN = $(CP) -O binary -S
 
#######################################
# CFLAGS
#######################################
# cpu
CPU = -mcpu=cortex-m4

# fpu
FPU = -mfpu=fpv4-sp-d16

# float-abi
FLOAT-ABI = -mfloat-abi=hard

# mcu
MCU = $(CPU) -mthumb $(FPU) $(FLOAT-ABI)

# macros for gcc
# AS defines
AS_DEFS = 

# C defines
C_DEFS =  \
-DUSE_HAL_DRIVER \
-DSTM32F407xx


# AS includes
AS_INCLUDES = 

# C includes
C_INCLUDES =  \
-ICore/Inc \
-IDrivers/STM32F4xx_HAL_Driver/Inc \
-IDrivers/STM32F4xx_HAL_Driver/Inc/Legacy \
-IDrivers/CMSIS/Device/ST/STM32F4xx/Include \
-IDrivers/CMSIS/Include \
-ICPP_Module/leddev


# compile gcc flags
ASFLAGS = $(MCU) $(AS_DEFS) $(AS_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections

CFLAGS += $(MCU) $(C_DEFS) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections

ifeq ($(DEBUG), 1)
CFLAGS += -g -gdwarf-2
endif


# Generate dependency information
CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"

# C++ 文件使用 -std=gnu++17 (或 gnu++11)，注意不要使用异常和RTTI以节省空间
CXXFLAGS = $(MCU) $(C_DEFS) $(C_INCLUDES) -Wall -fdata-sections -ffunction-sections -Og -g3 -std=gnu++11 -fno-exceptions -fno-rtti

#######################################
# LDFLAGS
#######################################
# link script
LDSCRIPT = STM32F407XX_FLASH.ld

# libraries
LIBS = -lc -lm -lnosys 
LIBDIR = 
LDFLAGS = $(MCU) -specs=nano.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections

# default action: build all
all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin $(BUILD_DIR)/$(TARGET).dis


#######################################
# build the application
#######################################
# list of objects
OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
vpath %.c $(sort $(dir $(C_SOURCES)))

OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(CXX_SOURCES:.cpp=.o)))
vpath %.cpp $(sort $(dir $(CXX_SOURCES)))

# list of ASM program objects
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
vpath %.s $(sort $(dir $(ASM_SOURCES)))
OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASMM_SOURCES:.S=.o)))
vpath %.S $(sort $(dir $(ASMM_SOURCES)))

# 链接规则：混合链接 C 和 C++ 对象文件
# 注意：这里使用 $(CXX) 进行链接，以确保链接到 C++ 标准库 runtime (如果需要)
# 如果完全不用 C++ 标准库特性，也可以用 $(CC)，但通常推荐用 $(CXX) 链接
$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) | $(BUILD_DIR)
	$(CXX) $(OBJECTS) $(LDFLAGS) -o $@
	$(SZ) $@

$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR) 
	$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@

# 编译 C++ 文件
$(BUILD_DIR)/%.o: %.cpp Makefile | $(BUILD_DIR)
	$(CXX) -c $(CXXFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.cpp=.lst)) $< -o $@

$(BUILD_DIR)/%.o: %.s Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@
$(BUILD_DIR)/%.o: %.S Makefile | $(BUILD_DIR)
	$(AS) -c $(CFLAGS) $< -o $@


$(BUILD_DIR)/%.hex: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(HEX) $< $@
	
$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(BIN) $< $@	

# 生成反汇编文件
$(BUILD_DIR)/%.dis: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
	$(OBJDUMP) -S $< > $@

$(BUILD_DIR):
	mkdir $@		

#######################################
# clean up
#######################################
clean:
	-rm -fR $(BUILD_DIR)
  
#######################################
# dependencies
#######################################
-include $(wildcard $(BUILD_DIR)/*.d)

# *** EOF ***

4.C/C++项目构建

        重新编译C/C++项目，结果如下：

在编译后的build目录下的.map文件下，查看LedSwitch的内容，C++代码编译后会的符号会被修饰

5.点亮LED

        既然上面的编译过程已经成功，接下来就是实现一个LED闪烁的功能，编写应用程序，在main.c添加以下代码

/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2026 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"

/* 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 */
extern void LED0_Init(void);
extern void LED0_On(void);
extern void LED0_Off(void);
/* 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 */
  /* USER CODE BEGIN 2 */
  LED0_Init();
  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */
    LED0_On();
    HAL_Delay(500);
    LED0_Off();
    HAL_Delay(500);
    /* 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};

  /** Configure the main internal regulator output voltage
  */
  __HAL_RCC_PWR_CLK_ENABLE();
  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  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_HSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != 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 */
  • 效果

程序下载后，LED每隔500ms闪烁一次

完整项目仓库：

https://gitee.com/SuccessNode/stm32-base-c-c.git

6.总结

        C/C++混合编程项目在单片机实际开发中可能并不常见，但如果对于整体系统资源充裕，并且需要集成更多的功能的话，C++的这种设计思想运用到单片机中也是一种值得考虑的手段。本文仅仅是简单的将C/C++混合项目在STM32单片机中实现，实际的产品项目会更加复杂。因此，希望本篇文章对开发者有所帮助。

# stm32 # c语言 # c++ # 单片机 # 驱动开发 # 嵌入式硬件 # mcu
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