1. Function description

	1. This example shows the IO control LED blinking


2. Development environment

	Software development environment: KEIL MDK-ARM V5.34.0.0
	Hardware environment: Developed based on the evaluation board N32G430C8L7-STB V1.0

3. How to use
	
	/* Describe related module configuration methods; for example: clock, I/O, etc. */
        AHB Clock:128MHz
        GPIO: PA1, PA7, PA9 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. LED (D1, D2, D3) flashes;

4. Attention
	none