1、功能说明
    1、ADC1规则采样PC2、自动注入采样PC3引脚的模拟电压，在TIM1 CC2事件下触发采样
    2、其中规则转换结果通过DMA_CH1通道读取到变量ADC_RegularConvertedValueTab[32]数组
       注入转换结果通过转换结束中断读取到变量ADC_InjectedConvertedValueTab[32]数组
2、使用环境
    软件开发环境：  KEIL MDK-ARM V5.26.2.0
    硬件环境：        基于N32G4FRML_STB V1.1开发
3、使用说明
    系统配置；
        1、时钟源：
            HSE=8M,PLL=144M,AHB=144M,APB1=36M,APB2=72M,ADC CLK=144M/16,ADC 1M CLK=HSE/8,DMA CLK=144M,TIM1 CLK=144M
        2、中断：
            ADC1注入转换结果完成中断打开，抢断优先级0，子优先级0
            中断函数中将注入结果读取到ADC_InjectedConvertedValueTab[32]数组，并翻转PC6电平
        3、端口配置：
            PC2选择为模拟功能ADC1转换通道
            PC3选择为模拟功能ADC1转换通道
            PC6选择为通用IO输出
            PA8选择为TIM1 CH1 PWM输出
            PA11选择为TIM1 CH4 PWM输出
        4、DMA：
            DMA1_CH1通道循环模式搬运32个半字的ADC1转换结果到ADC_RegularConvertedValueTab[32]数组
        5、ADC：
            ADC1独立工作模式、TIM1 CC2触发、12位数据右对齐，规则转换通道PC2，自动注入转换通道PC3的模拟电压数据
        6、TIM：
            TIM1开启CH1 CH4输出，CH2用作触发ADC转换        
    使用方法：
        1、编译后打开调试模式，将变量ADC_RegularConvertedValueTab[32],ADC_InjectedConvertedValueTab[32]添加到watch窗口观察
        2、通过改变PC2 PC3引脚的电压，在每个CC2事件发生时转换一次规则和注入通道，变量储存在对应数组中。同时在PA8 PA11可以看到TIM1 CH1和CH4的 PWM 波形
4、注意事项
    当系统采用HSE时钟时（一般HSI也是打开的），RCC_ConfigAdc1mClk(RCC_ADC1MCLK_SRC_HSE, RCC_ADC1MCLK_DIV8)可以配置为HSE或者HSI
    当系统采用HSI时钟时（一般HSE是关闭的），RCC_ConfigAdc1mClk(RCC_ADC1MCLK_SRC_HSI, RCC_ADC1MCLK_DIV8)只能配置为HSI


1. Function description
    1. ADC1 regular channel sampling PC2, automatically inject and sample the analog voltage of PC3 pin, and trigger source is TIM1 CC2 
    2. The result of regular conversion is read into variable ADC_RegularConvertedValueTab[32] array through DMA_CH1 channel
        When end of conversion interrupt generate, injection transformation results read into variable ADC_InjectedConvertedValueTab [32] array through interrupt handler function
2. Use environment
    Software development environment: KEIL MDK-ARM V5.26.2.0
    Hardware environment: Developed based on the development board N32G4FRML_STB V1.1
3. Instructions for use
    System configuration;
        1. Clock source:
            HSE=8M,PLL=144M,AHB=144M,APB1=36M,APB2=72M,ADC CLK=144M/16,ADC 1M CLK=HSE/8,DMA CLK=144M,TIM1 CLK=144M
        2. Interrupt:
            ADC1 injection conversion complete interrupt enable, steal priority 0, sub priority 0
            Injection channel conversion value read ADC_InjectedConvertedValueTab[32] array through interrupt handler function, and flip PC6 level
        3. Port Configuration:
            PC2 is selected as the analog function, ADC1 conversion channel
            PC3 is selected as the analog function, ADC1 conversion channel
            PC6 is selected as general IO output
            PA8 is selected as TIM1 CH1 PWM output
            PA11 is selected as TIM1 CH4 PWM output
        4, DMA:
            DMA1_CH1 channel is configuered as circular mode, carries 32 half-word of ADC1 conversion result to the ADC_RegularConvertedValueTab[32] array
        5, ADC:
            ADC1 configuration: independent mode, TIM1 CC2 trigger, 12-bit data right alignment, regular conversion channel PC2, automatic injection converts the analog voltage data of conversion channel PC3
        6, TIM:
            TIM1 turns on the CH1 CH4 output, and CH2 is used to trigger the ADC conversion
    Instructions:
        1. Open the debugging mode after compilation, variable ADC_RegularConvertedValueTab[32], ADC_InjectedConvertedValueTab[32] added to the watch window
        2. By changing the voltage of PC2 PC3 pins, the regular and injection channel are converted once for each CC2 event, and the variables are stored in the corresponding array. Meanwhile, PWM         waveforms of TIM1, CH1 and CH4 can be seen in PA8, PA11
4. Matters needing attention
    When the system uses the HSE clock (HSI is generally enabled), ), RCC_ConfigAdc1mClk (RCC_ADC1MCLK_SRC_HSE, RCC_ADC1MCLK_DIV8) can be configured as HSE or HSI
    When the system uses the HSI clock(HSE is generally disabled), RCC_ConfigAdc1mClk(RCC_ADC1MCLK_SRC_HSI, RCC_ADC1MCLK_DIV8) can only be configured as HSI