1、功能说明

	1、此例程展示读取端口高低电平，控制 LED（D1、D2、D3）闪烁
	2、控制 IO 口电平翻转

2、使用环境

	/* 硬件环境：工程对应的开发硬件平台 */
	开发板：NS3602_LQFP100_V0.1

3、使用说明
	
	/* 描述相关模块配置方法；例如:时钟，I/O等 */
	1、SystemClock：108MHz
	2、GPIO：PA8、PA9、PA10 控制 LED(D1、D2、D3) 闪烁


	/* 描述Demo的测试步骤和现象 */
	1.编译后下载程序复位运行；
	2.上电后 D1 常亮，D2、D3 闪烁；

4、注意事项


1. Function description

	1. This example shows the read port high and low levels, and controls the LEDs (D1, D2, D3) to flash
	2. Control IO port level flip


2. Use environment

	/* Hardware environment: the development hardware platform corresponding to the project */
	Development board: NS3602_LQFP100_V0.1

3. Instructions for use

	/* Describe related module configuration methods; for example: clock, I/O, etc. */
	SystemClock: 108MHz
	GPIO: PA8, PA9, PA10 control LED (D1, D2, D3) to blink


	/* Describe the test steps and phenomena of the Demo */
	1. After compiling, download the program to reset and run;
	2. After power-on, D1 is always on, and D2 and D3 are flashing;


4. Attention
	None.