第十一个实验 ADC采集实验 亲测代码可用

亲测代码可用 代码下载地址：

#include "stm32f10x.h"
void delay_ms(u16 nms);
void LEDXToggle(uint8_t ledx);
#include <stdio.h>

int  main()
{
  uint16_t Temp_Value;
  float ADC_Value=0.00;
  while (SysTick_Config(SystemCoreClock/1000000));

  GPIO_InitTypeDef GPIO_InitStructure; 
    USART_InitTypeDef USART_InitStructure;  //??????????
    RCC_APB2PeriphClockCmd( RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA,ENABLE);

    /*USART1_TX ->PA9*/   
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;        //??????????  
    //???????? 
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //????????
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;//????9??? 
    GPIO_Init(GPIOA , &GPIO_InitStructure);           //????,?????????????    
    /*USART1_RX ->PA10*/
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;     
  //??????
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; 
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA , &GPIO_InitStructure);
    /*????????*/
    USART_InitStructure.USART_BaudRate = 9600; //???
    USART_InitStructure.USART_WordLength = USART_WordLength_8b; //???8?
    USART_InitStructure.USART_StopBits = USART_StopBits_1; //???1?
    USART_InitStructure.USART_Parity = USART_Parity_No;  //??? ?
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//????
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;  //?????????

    USART_Init(USART1, &USART_InitStructure);
 
   USART_ClearFlag(USART1,USART_FLAG_TC);
  USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
  USART_ITConfig(USART1, USART_IT_TXE, ENABLE);  
    USART_Cmd(USART1, ENABLE);
  
  printf("*************************************************************\r\n");
    printf("*                                                           *\r\n");
    printf("* Thank you for using The Development Board Of YuanDi ! ^_^ *\r\n");
    printf("*                                                           *\r\n");
    printf("*************************************************************\r\n");
  
  
  
  ADC_InitTypeDef ADC_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOA, &GPIO_InitStructure);  
  
  /* ADC1 configuration ------------------------------------------------------*/
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;                 /* ¶ÀÁ¢Ä£Ê½ */
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;                   /* Á¬Ðø¶àͨµÀģʽ */
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;                 /* Á¬Ðøת»» */
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;   /* ת»»²»ÊÜÍâ½ç¾ö¶¨ */
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;          /* ÓÒ¶ÔÆë */
  ADC_InitStructure.ADC_NbrOfChannel = 1;                 /* ɨÃèͨµÀÊý */
  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channel0 configuration */
  ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_239Cycles5);
  ADC_Cmd(ADC1, ENABLE);                                                /* Enable ADC1 */                     
  ADC_SoftwareStartConvCmd(ADC1,ENABLE);                                /* ʹÄÜת»»¿ªÊ¼ */
  
  while (1)
  {
   Temp_Value = ADC_GetConversionValue(ADC1);

//关于为什么要用Temp_Value*(3.3/4096)这个问题 

//因为SDC输出的是一个没有单位的12位ADC值 最大的数字量是4096

//把数字量转换为有单位的值的时候就要用到参考电压来计算。得到多少伏的量  
   ADC_Value = (3.3/4096)*Temp_Value;    /*½«ADֵת»»Îªµçѹֵ*/
   printf("\r\n The Temp_Value is %d \r\n",Temp_Value);
   printf("\r\n The Value is %f \r\n",ADC_Value);
 //  OLED_DisDecimal(10, 15, ADC_Value,4, &tFont12);
 //   LEDXToggle(LED1);
   delay_ms(500);
   
  }
 }

  void LEDXToggle(uint8_t ledx)
   {
    if(ledx==1)
    {
     GPIOC->ODR^=GPIO_Pin_13;
    }
   }

   u16 nTime;
   void SysTick_Handler(void)
   {
    if(nTime)
    nTime--;
   }

  void delay_us(u16 nus)
   {
    nTime=nus;
    while(nTime);
   }

   void delay_ms(u16 nms)
   {
    while(nms--)
    delay_us(1000);
   }

  int  fputc(int ch, FILE *f)
  {
   /* Place your implementation of fputc here */
   /* e.g. write a character to the USART */
   USART_SendData(USART1, (uint8_t) ch);
   /* Loop until the end of transmission */
   while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
   {}
   return ch;
  }