
1. Function description
     1. TIM1 CH2 gated CH1 and TIM3

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. Clock source:
            HSI=64M,AHB=64M,APB1=32M,APB2=64M,TIM1 CLK=64M, TIM3 CLK=64M
        2. Port configuration:
                    PB8 is selected as TIM1 CH1 output
                    PB9 is selected as TIM1 CH2 input
                    PB4 is selected as TIM3 CH1 output
        3. TIM:
            TIM1 CH2 Gated CH1, Gated TIM3
     Instructions:
        1. Open debugging mode after compilation and observe TIM1 CH1, TIM3 CH1 waveforms with an oscilloscope or logic analyzer
        2. TIM1 CH2 high level timer starts counting, low level stops
        
4. Matters needing attention
    None