基于stm32f103的adc采集的代码

以下是基于STM32F103的ADC采集的代码示例：

#include "stm32f10x.h"
#include "stdio.h"

#define ADC1_DR_Address ((uint32_t)0x4001244C)

__IO uint16_t ADC1ConvertedValue = 0;

void GPIO_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
}

void ADC_Configuration(void)
{
    ADC_InitTypeDef ADC_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

    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_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5);

    ADC_Cmd(ADC1, ENABLE);

    ADC_ResetCalibration(ADC1);

    while (ADC_GetResetCalibrationStatus(ADC1));

    ADC_StartCalibration(ADC1);

    while (ADC_GetCalibrationStatus(ADC1));
}

void USART_Configuration(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    USART_InitStructure.USART_BaudRate = 9600;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Tx;

    USART_Init(USART2, &USART_InitStructure);

    USART_Cmd(USART2, ENABLE);
}

void NVIC_Configuration(void)
{
    NVIC_InitTypeDef NVIC_InitStructure;

    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

    NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
}

void ADC1_IRQHandler(void)
{
    if (ADC_GetITStatus(ADC1, ADC_IT_EOC) != RESET)
    {
        ADC_ClearITPendingBit(ADC1, ADC_IT_EOC);

        ADC1ConvertedValue = ADC_GetConversionValue(ADC1);

        USART_SendData(USART2, ADC1ConvertedValue >> 8);
        while (USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
        USART_SendData(USART2, ADC1ConvertedValue & 0xFF);
        while (USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
    }
}

int main(void)
{
    GPIO_Configuration();
    ADC_Configuration();
    USART_Configuration();
    NVIC_Configuration();

    ADC_SoftwareStartConvCmd(ADC1, ENABLE);

    while (1);
}

在这个示例中，我们使用了ADC1和PA0引脚进行采集和输入。`ADC_Configuration()`函数设置ADC的配置，包括通道选择和采样时间。在`ADC1_IRQHandler()`中，我们读取转换值并通过USART发送到计算机上。在main函数中，我们启动了ADC转换，然后进入一个无限循环等待转换完成并发送数据。