1、功能说明
    1、TIM1 CH2门控CH1和TIM3
2、使用环境
    软件开发环境：KEIL MDK-ARM 5.34
                IAR EWARM 8.50.1
    硬件开发环境： 
        N32G033系列：
            基于评估板N32G033K8Q7-1_STB V1.0开发
3、使用说明
    系统配置:
        1、时钟源：HSI+PLL
        2、时钟频率：
            N32G033系列：
                SYS_CLK=64M,TIM1_CLK=64M
        3、端口配置：
            PA4选择为TIM1 CH1输出
            PA3选择为TIM1 CH2输入
            PA6选择为TIM3 CH1输出
        4、TIM：
            TIM1 CH2门控CH1和TIM3
    使用方法：
        1、编译后打开调试模式，用示波器或者逻辑分析仪观察TIM1 CH1,TIM3 CH1的波形
        2、TIM1 CH2高电平定时器开始计数，低电平停止


1. Function description

    1.TIM1 CH2 gated CH1 and TIM3
    
2. Development environment

    Software development environment:  KEIL MDK-ARM 5.34
                                       IAR EWARM 8.50.1
    Hardware development environment:
        N32G033 series:
            Developed based on the evaluation board N32G033K8Q7-1_STB V1.0
3. How to use
    System Configuration;
        1. Clock source: HSI+PLL
        2. Clock frequency: 
            N32G033 series:
                SYS_CLK=64M,TIM1_CLK=64M        
        3. Port configuration:
            PA4 is selected as TIM1 CH1 output
            PA3 is selected as TIM1 CH2 input
            PA6 is selected as TIM3 CH1 output
        4. TIM:
            TIM1 CH2 gated CH1 and TIM3
        Instructions:
            1. After compiling, turn on the debug mode, use an oscilloscope or logic analyzer to observe the waveforms of TIM1 CH1, TIM3 CH1
            2. TIM1 CH2 high level timer starts counting, low level stops
4. Attention
    without