1、功能说明

    此例程展示通过外部触发中断，控制 LED 闪烁

2、使用环境

    /* 软件开发环境：当前工程使用的软件工具名称及版本号 */
    IDE工具：KEIL MDK-ARM 5.34.0.0
      
    /* 硬件环境：工程对应的开发硬件平台 */
    开发板：N32G003F5S7-STB V1.0     

3、使用说明

    /* 描述相关模块配置方法；例如:时钟，I/O等 */
    SystemClock：48MHz
    GPIO：PA11 选择作为外部中断入口，PA6/PA7 控制 LED

    /* 描述Demo的测试步骤和现象 */
    1.编译后下载程序复位运行；
    2.D1常亮；连续按下松开 KEY1 按键，D2 闪烁；


4、注意事项
    无

1. Function description

    This example shows how to control LED blinking by externally triggering an interrupt.
    
2. Use environment

     /* Software development environment: the name and version number of the software tool used in the current project. */
        IDE tool: KEIL MDK-ARM 5.34.0.0
    
     /* Hardware environment: The development hardware platform corresponding to the project. */
        Development Board: N32G003F5S7-STB V1.0

3. Instructions for use

     /*Describe related module configuration methods; for example, clock, I/O, etc. */
     1. SystemClock: 48MHz
     2. GPIO：PA11 is selected as the external interrupt input, PA6\PA7 controls the LED .

     /*Describe the test steps and phenomena of the Demo */
     1. Compile and download the code to reset and run.
     2. D1 keep on; Press and release the KEY2 button continuously, then the D2 will blink.

4. Matters needing attention
     None