stm32f103c8t6 adc采样电压程序标准库

以下是使用标准库进行ADC采样的示例代码：

#include "stm32f10x.h"
#include <stdio.h>

#define ADC1_DR_Address ((uint32_t)0x4001244C) // ADC1数据寄存器地址

void ADC1_Init(void)
{
    ADC_InitTypeDef ADC_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;
    DMA_InitTypeDef DMA_InitStructure;

    RCC_ADCCLKConfig(RCC_PCLK2_Div6); // ADC时钟频率为72MHz/6=12MHz
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 | RCC_AHBPeriph_GPIOA, ENABLE); // 使能DMA1和GPIOA时钟

    // PA1作为ADC通道1的输入引脚
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // ADC1配置
    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);

    // ADC1通道1配置
    ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_239Cycles5);

    // DMA1配置
    DMA_DeInit(DMA1_Channel1);
    DMA_InitStructure.DMA_PeripheralBaseAddr = ADC1_DR_Address;
    DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)&ADCValue;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_BufferSize = 1;
    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Disable;
    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
    DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
    DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
    DMA_Init(DMA1_Channel1, &DMA_InitStructure);

    // 使能ADC/DMA
    ADC_DMACmd(ADC1, ENABLE);
    ADC_Cmd(ADC1, ENABLE);
    DMA_Cmd(DMA1_Channel1, ENABLE);

    // ADC校准
    ADC_ResetCalibration(ADC1);
    while (ADC_GetResetCalibrationStatus(ADC1));
    ADC_StartCalibration(ADC1);
    while (ADC_GetCalibrationStatus(ADC1));
}

int main(void)
{
    uint16_t ADCValue = 0;

    ADC1_Init();

    while (1)
    {
        ADC_SoftwareStartConvCmd(ADC1, ENABLE); // 启动ADC转换
        while (!DMA_GetFlagStatus(DMA1_FLAG_TC1)); // 等待DMA传输完成
        DMA_ClearFlag(DMA1_FLAG_TC1); // 清除DMA传输完成标志位

        ADCValue = ADC_GetConversionValue(ADC1); // 读取ADC值
        printf("ADC Value: %d\n", ADCValue);
    }
}

注意，在上面的代码中，`ADCValue`是一个`uint16_t`类型的变量，用于存储ADC转换结果。此外，还需要在工程中添加`stdio.h`头文件，以便使用`printf()`函数输出调试信息。