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+# APM32F402-R-MDK Project Description
+
+This project is an MDK development template based on the APM32F402 series microcontrollers. It provides complete hardware driver support and system initialization code, suitable for embedded development.
+
+## Project Structure
+
+- **APM32Libs**: Contains microcontroller peripheral driver functions, such as ADC, CAN, DMA, GPIO, I2C, SPI, USB, etc.
+- **CMSIS**: ARM Cortex-M series core support files, including system control register definitions, interrupt control, system clock configuration, etc.
+- **Start**: System startup files, including system initialization, clock configuration, and interrupt vector table.
+- **User**: User code directory, containing the `main.c` example code to initialize LEDs and buttons and implement basic control logic.
+
+## Main Functional Modules
+
+- **Peripheral Drivers**: Provides complete peripheral driver functions supporting ADC, CAN, DMA, GPIO, I2C, SPI, USB, and more.
+- **System Initialization**: Configures system clock, interrupt vector table offset, etc.
+- **Hardware Abstraction Layer**: Provides a unified hardware access interface, facilitating porting and maintenance.
+
+## Usage Instructions
+
+### Development Environment
+
+- **Development Tools**: Keil MDK-ARM
+- **Target Chip**: APM32F402 series microcontroller
+
+### Compilation and Download
+
+1. Open the `Project.uvprojx` project file.
+2. Click the "Build" button to compile the project.
+3. Use a debugger to download the program to the target chip.
+4. Run the program and observe the behavior of the LEDs and buttons.
+
+### Example Code Description
+
+- `initLed()`: Initializes the LED pin as an output mode.
+- `getLED2State()`: Gets the current state of LED2.
+- `initKey()`: Initializes the button pin as an input mode.
+- `getKeyState()`: Reads the button state.
+- `main()`: The main function, initializes hardware, and enters the main loop to control the LED based on the button state.
+
+## Notes
+
+- When using peripheral drivers, ensure that the clock and pin multiplexing functions are correctly configured.
+- When modifying system clock configurations, refer to the data manual to ensure the configuration meets chip requirements.
+- Users can extend functionality in `main.c` to implement more complex application logic.
+
+## Copyright Information
+
+This project follows an open-source license. Please refer to the LICENSE file in the project for detailed information.
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+# APM32F402-R-MDK 项目说明
+
+本项目是基于 APM32F402 系列微控制器的 MDK 开发模板，提供了完整的硬件驱动支持和系统初始化代码，适用于嵌入式开发。
+
+## 项目结构
+
+- **APM32Libs**：包含微控制器外设驱动函数，如 ADC、CAN、DMA、GPIO、I2C、SPI、USB 等。
+- **CMSIS**：ARM Cortex-M 系列内核支持文件，包括系统控制寄存器定义、中断控制、系统时钟配置等。
+- **Start**：系统启动文件，包含系统初始化、时钟配置和中断向量表。
+- **User**：用户代码目录，包含 `main.c` 示例代码，用于初始化 LED 和按键并实现基本控制逻辑。
+
+## 主要功能模块
+
+- **外设驱动**：提供完整的外设驱动函数，支持 ADC、CAN、DMA、GPIO、I2C、SPI、USB 等功能。
+- **系统初始化**：配置系统时钟、中断向量表偏移等。
+- **硬件抽象层**：提供统一的硬件访问接口，便于移植和维护。
+
+## 使用说明
+
+### 开发环境
+
+- **开发工具**：Keil MDK-ARM
+- **目标芯片**：APM32F402 系列微控制器
+
+### 编译与下载
+
+1. 打开 `Project.uvprojx` 工程文件。
+2. 点击 "Build" 按钮编译工程。
+3. 使用调试器将程序下载到目标芯片中。
+4. 运行程序并观察 LED 和按键的行为。
+
+### 示例代码说明
+
+- `initLed()`：初始化 LED 引脚为输出模式。
+- `getLED2State()`：获取 LED2 的当前状态。
+- `initKey()`：初始化按键引脚为输入模式。
+- `getKeyState()`：读取按键状态。
+- `main()`：主函数，初始化硬件并进入主循环，根据按键状态控制 LED。
+
+## 注意事项
+
+- 在使用外设驱动时，请确保已正确配置时钟和引脚复用功能。
+- 修改系统时钟配置时，请参考数据手册确保配置符合芯片要求。
+- 用户可根据需求扩展 `main.c` 中的功能，实现更复杂的应用逻辑。
+
+## 版权信息
+
+本项目遵循开源协议，请参考项目中的 LICENSE 文件获取详细信息。
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