

1. Function description
    1. This routine shows the IO control LED blinking

2. Use environment
    Software development environment: KEIL MDK-ARM V5.30.0.0
    Hardware environment: Developed based on the development board N32WB031_STB

3. Instructions for use
    System Configuration;
        1. SystemClock: HSI 64MHz
        2. GPIO: PB0, PA6 control LED1, LED2 to blink
    Instructions:
        1. After compiling, download the program to reset and run
        2. LED1, LED2 to blinking
4. Matters needing attention
    No    