【沁恒 CH32V208 开发板免费试用】利用ADC采集值

功能：利用ADC采集值。
开发板：CH32V208W
开发平台：MounRiver Studio

1、CH32V208W ADC引脚分布

2、ADC框图：

3、ADC寄存器

4、代码：

ADC_InitTypeDef  ADC_InitStructure = {0};
    GPIO_InitTypeDef GPIO_InitStructure = {0};

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
    RCC_ADCCLKConfig(RCC_PCLK2_Div8);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    ADC_DeInit(ADC1);
    ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfChannel = 1;
    ADC_Init(ADC1, &ADC_InitStructure);

    ADC_Cmd(ADC1, ENABLE);

    ADC_BufferCmd(ADC1, DISABLE); //disable buffer
    ADC_ResetCalibration(ADC1);
    while(ADC_GetResetCalibrationStatus(ADC1));
    ADC_StartCalibration(ADC1);
    while(ADC_GetCalibrationStatus(ADC1));
    Calibrattion_Val = Get_CalibrationValue(ADC1);

    ADC_BufferCmd(ADC1, ENABLE); //enable buffer

    ADC_TempSensorVrefintCmd(ENABLE);



    u32 temp_val = 0;
    u8  t;
    u16 val;

    for(t = 0; t < times; t++) {
        temp_val += Get_ADC_Val(ch);
        Delay_Ms(5);
    }

    val = temp_val / times;

    return val;



ADC_val = Get_ADC_Average(ADC_Channel_TempSensor, 10);
        Delay_Ms(500);

        ADC_val = Get_ConversionVal(ADC_val);

        val_mv = (ADC_val * 3300 / 4096);
        printf("ADC-val_mv:%04d\r\n", val_mv);
        Delay_Ms(2);

5、输出结果：