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adc-rgb代码：

#include "stm32f10x.h"  
#include "stm32_eval.h"  
#include <stdio.h>  
#define VREF 3.3  
GPIO_InitTypeDef   GPIO_InitStructure;  
USART_InitTypeDef USART_InitStructure;  
USART_ClockInitTypeDef USART_ClockInitStructure;  
int volt;  
unsigned int temp0,temp1,temp2;  
void RCC_Configuration(void)  
{/* 
  RCC_DeInit(); 
     
  RCC_HSICmd(ENABLE); 
  while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET); 
   
  RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI); 
   
  RCC_HSEConfig(RCC_HSE_OFF); 
  RCC_LSEConfig(RCC_LSE_OFF); 
  RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); //  72HMz 
  RCC_PLLCmd(ENABLE); 
  while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET); 
  RCC_ADCCLKConfig(RCC_PCLK2_Div4); 
  RCC_PCLK2Config(RCC_HCLK_Div1); 
  RCC_PCLK1Config(RCC_HCLK_Div2); 
  RCC_HCLKConfig(RCC_SYSCLK_Div1); 
  RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); 
  while(RCC_GetSYSCLKSource() != 0x08); 
*/  
    SystemInit();  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);  
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);  
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;  
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  
  GPIO_Init(GPIOD, &GPIO_InitStructure);  
    GPIO_ResetBits(GPIOD,GPIO_Pin_2);  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);  
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;  
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  
  GPIO_Init(GPIOC, &GPIO_InitStructure);  
    GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);  
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);  
}   
  
void USART_int(long BaudRate)  
{  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);  
       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;  
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;   
    GPIO_Init(GPIOA, &GPIO_InitStructure);  
    /* PA10 USART1_Rx  */  
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;  
    GPIO_Init(GPIOA, &GPIO_InitStructure);  
  /* USARTx configured as follow: 
        - BaudRate = 115200 baud   
        - Word Length = 8 Bits 
        - One Stop Bit 
        - No parity 
        - Hardware flow control disabled (RTS and CTS signals) 
        - Receive and transmit enabled 
  */  
  USART_InitStructure.USART_BaudRate = BaudRate;//??????  
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit  
  USART_InitStructure.USART_StopBits = USART_StopBits_1;//????1  
  USART_InitStructure.USART_Parity = USART_Parity_No;//????  
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//??????none  
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//??????????  
    USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;       
    USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;        
    USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;        
    USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;  
    USART_ClockInit(USART1, &USART_ClockInitStructure);  
  USART_Init(USART1, &USART_InitStructure);  
  USART_Cmd(USART1, ENABLE);  
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);  
 USART_Cmd(USART1, ENABLE);  
}  
void delay_us(u32 n)  
{  
    u8 j;  
    while(n--)  
    for(j=0;j<10;j++);  
}  
void  delay_ms(u32 n)  
{  
    while(n--)  
    delay_us(1000);  
}  
void PWM_Config()  
{  
    uint16_t PrescalerValue = 0;  
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;  
  TIM_OCInitTypeDef  TIM_OCInitStructure;  
    /* TIM2 clock enable */  
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);  
  /* GPIOA  enable */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);  
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;//PWM&RGB- PA1 PA2 PA3  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
  GPIO_Init(GPIOA, &GPIO_InitStructure);  
        TIM_Cmd(TIM2, ENABLE);  
      /* Compute the prescaler value */  
  PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;  
  /* Time base configuration */  
  TIM_TimeBaseStructure.TIM_Period = 0x07FF;  
  TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;  
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;  
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);  
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;  
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;  
  /* PWM1 Mode configuration: Channel2 ,PA1在通道2*/  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;  
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);  
    /* PWM1 Mode configuration: Channel3 PA2在通道3*/  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;  
  TIM_OC3Init(TIM2, &TIM_OCInitStructure);  
    /* PWM1 Mode configuration: Channel4 PA3在通道4*/  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;  
  TIM_OC4Init(TIM2, &TIM_OCInitStructure);  
  TIM_ARRPreloadConfig(TIM2, ENABLE);  
}  
void ADC_CONFIG(){  
    ADC_InitTypeDef ADC_InitStructure;  
    #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)  
  /* ADCCLK = PCLK2/2 */  
  RCC_ADCCLKConfig(RCC_PCLK2_Div2);   
#else  
  /* ADCCLK = PCLK2/4 */  
  RCC_ADCCLKConfig(RCC_PCLK2_Div4);   
#endif  
ADC_DeInit(ADC1);  
  /* Enable ADC1 and GPIOC clock */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOB, ENABLE);  
    /* Configure PB0 (ADC Channel14) as analog input -------------------------*/  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;//ADC所在端口PB0  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;//模拟输入模式  
  GPIO_Init(GPIOB, &GPIO_InitStructure);  
  /* ADC1 configuration ------------------------------------------------------*/  
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;  
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;  
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;  
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;  
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//ADC数据右对齐  
  ADC_InitStructure.ADC_NbrOfChannel = 1;//ADC通道数为1  
  ADC_Init(ADC1, &ADC_InitStructure);//初始化ADC1  
  /* Enable ADC1 DMA */  
  ADC_DMACmd(ADC1, ENABLE);  
  /* Enable ADC1 */  
  ADC_Cmd(ADC1, ENABLE);  
}  
  
int Get_ADC(){  
     /* ADC1 regular channel configuration */   
  ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_55Cycles5);//通道：8 ，采样时间  
    /* Enable ADC1 reset calibration register */     
  ADC_ResetCalibration(ADC1);//重置ADC1的校准寄存器  
  /* Check the end of ADC1 reset calibration register */  
  while(ADC_GetResetCalibrationStatus(ADC1));//确认重置完毕  
  /* Start ADC1 calibration */  
  ADC_StartCalibration(ADC1);//开始ADC1校准  
  /* Check the end of ADC1 calibration */  
  while(ADC_GetCalibrationStatus(ADC1));//确认校准完毕  
  /* Start ADC1 Software Conversion */   
  ADC_SoftwareStartConvCmd(ADC1, ENABLE);//使能ADC1软件转换功能  
    return ADC_GetConversionValue(ADC1);  
}  
void PWM_TEST()  
{  
    /*全局变量volt，控制TIM_SetCompare2，TIM_SetCompare3，TIM_SetCompare4 的第二个参数*/  
    unsigned int temp0=volt,temp1=0,temp2=volt;  
    printf("PWM-RGB TEST......\r\n");  
   for(;(temp0>0)||(temp1<volt);temp0--,temp1++)// ???? ????   
   {  
       TIM_SetCompare2(TIM2, temp0);//temp0:volt~0  
     TIM_SetCompare3(TIM2, temp1);//temp1:0~volt  
       delay_us(1000);  
   }  
     for(;(temp0<volt)||(temp2>0);temp0++,temp2--)//????  ????  
     {  
       TIM_SetCompare2(TIM2, temp0);//temp0:0~volt  
       TIM_SetCompare4(TIM2, temp2);//temp2:volt~0  
       delay_us(1000);  
   }  
   for(;(temp1>0)||(temp2<volt);temp1--,temp2++)//???? ????  
   {  
       TIM_SetCompare4(TIM2, temp2);//temp2:0~volt  
       TIM_SetCompare3(TIM2, temp1);//temp1:volt~0  
       delay_us(1000);  
   }  
}  
int main(void)  
{  
  float Volt=0.00;  
    int ADValue = 0;  
  RCC_Configuration();  
  USART_int(115200);  
    ADC_CONFIG();  
    Get_ADC();  
    PWM_Config();  
    delay_ms(1000);  
    printf(" config done...\r\n");  
    while(1)  
    {  
        ADValue = Get_ADC();  
        Volt = VREF*ADValue/4095;  
        /*volt的值由Volt直接决定 volt是Volt乘以1000的整型值*/  
        volt=Volt*1000;  
        printf("===============================\r\n");  
        printf("The ADC value is:%d\r\n",ADValue);  
        printf("The Volt is:%f V\r\n",Volt);  
        printf("The volt is:%d \r\n",volt);  
        PWM_TEST();  
        delay_ms(500);  
    }  
}  
  
#ifdef  USE_FULL_ASSERT  
  
void assert_failed(uint8_t* file, uint32_t line)  
{   
  while (1)  
  {  
  }  
}  
  
#endif  
  
#ifdef __GNUC__  
  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)  
#else  
  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)  
#endif /* __GNUC__ */  
    
PUTCHAR_PROTOTYPE  
{  
  
  USART_SendData(EVAL_COM1, (uint8_t) ch);  
  while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)  
  {}  
  
  return ch;  
}  
  
#ifdef  USE_FULL_ASSERT  
  
void assert_failed(uint8_t* file, uint32_t line)  
{   
  while (1)  
  {  
  }  
}  
#endif  

#include "stm32f10x.h"  
#include "stm32_eval.h"  
#include    "stdio.h"  
#include "math.h"  
#define buff_size  16;       
char rx_buff[], rx_buff_count=0;  
  
GPIO_InitTypeDef  GPIO_InitStructure;  
USART_InitTypeDef  USART_InitStructure;  
NVIC_InitTypeDef  NVIC_InitStructure;  
USART_ClockInitTypeDef  USART_ClockInitStructure;  
  
void RCC_Configuration(void)  
{  
    RCC_DeInit();  
    RCC_HSICmd(ENABLE);  
    while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);  
    RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);  
    RCC_HSEConfig(RCC_HSE_OFF);  
    RCC_LSEConfig(RCC_LSE_OFF);  
    RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); //  72HMz  
    RCC_PLLCmd(ENABLE);  
    while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);  
    RCC_ADCCLKConfig(RCC_PCLK2_Div4);  
    RCC_PCLK2Config(RCC_HCLK_Div1);  
    RCC_PCLK1Config(RCC_HCLK_Div2);  
    RCC_HCLKConfig(RCC_SYSCLK_Div1);  
    RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);  
    while(RCC_GetSYSCLKSource() != 0x08);  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);  
    GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;  
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  
    GPIO_Init(GPIOD, &GPIO_InitStructure);  
    GPIO_ResetBits(GPIOD,GPIO_Pin_2);//关闭蜂鸣器  
}  
void GPIO_INIT()  
{  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能PC时钟  
  
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;//PC0-PC7  
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//推挽输出   
    GPIO_Init(GPIOC, &GPIO_InitStructure);//初始化PC  
}  
  
void USART_int(long BaudRate)  
{  
     RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);//使能PA USART1  
   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;//TX位于PA9   
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;  
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //推挽输出  
   GPIO_Init(GPIOA, &GPIO_InitStructure);//TX初始化 PA9   
   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;//RX位于PA10   
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//悬空输入  
   GPIO_Init(GPIOA, &GPIO_InitStructure);//RX初始化 PA10   
  /* USARTx configured as follow: 
        - BaudRate = 115200 baud   
        - Word Length = 8 Bits 
        - One Stop Bit 
        - No parity 
        - Hardware flow control disabled (RTS and CTS signals) 
        - Receive and transmit enabled 
  */  
    USART_InitStructure.USART_BaudRate = BaudRate;//传输速率  
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长8比特  
    USART_InitStructure.USART_StopBits = USART_StopBits_1;//停止位1   
    USART_InitStructure.USART_Parity = USART_Parity_No;//  
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//流控位none  
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//接收和发送模式  
    USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;       
  USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;        
  USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;        
  USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;  
    USART_ClockInit(USART1, &USART_ClockInitStructure);//初始化USART1时钟  
    USART_Init(USART1, &USART_InitStructure);//初始化USART1   
    USART_Cmd(USART1, ENABLE);   
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);  
    USART_Cmd(USART1, ENABLE);  
  /* Configure four bit for preemption priority */  
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);//优先级  
  /* Enable the USART1 Interrupt */  
    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; //选择USART1中断通道  
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;  
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  
    NVIC_Init(&NVIC_InitStructure);//  
}  
  
/*delay_us*/   
void delay_us(u32 n)  
{  
    u8 j;  
    while(n--)  
    for(j=0;j<10;j++);  
}  
/*delay_ms*/   
void  delay_ms(u32 n)  
{  
    while(n--)  
    delay_us(1000);  
}  
  
void USART_SendStr(char *str)//  
{  
   while((*str)!='\0')//
    {     
        USART_SendData(USART1,*str++);  
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);  
    }  
}  
  
unsigned int translate(char *S,char j)//  
{  
    unsigned int a[4],sum=0;  
    char i;  
    for(i=0;i<j;i++)  
    {  
        a[i]=S[5+j-1-i]-48;//将字符转成整型数据  
        sum+=a[i]*pow(10,i);//按照每一位的权值相乘再相加，还原data=n的本来面貌  
    }  
    return sum;//sum保存目标整型数据  
}   
  
void func(char *S,char LEN)  
{   
    char count;//  
    unsigned int sum,i,j,k;  
    if((LEN!=6)&(LEN!=7)&(LEN!=8)&(LEN!=9))//data=1~999  
    {USART_SendStr("\r\n Erro input!!!\r\n");}//  
    else   
    {  
        count=LEN-5;// 
        sum = translate(S,count);// 
        GPIO_SetBits(GPIOC,0x000000ff);//all LED off   
        for(k=0;k<3;k++)//
        {  
            i=0x00000100;  
            for(j=1;j<=8;j++)//LED D8-D1  
            {  
                i>>=1;  
                GPIO_ResetBits(GPIOC,i);    // on PC7-PC0 D8-D1  
                delay_ms(50);  
                GPIO_SetBits(GPIOC,i);  
                delay_ms(sum);//
            }  
        }  
    }  
}  
  
void input_ASK()  
{  
    char j;  
    func(rx_buff,rx_buff_count);  
    rx_buff_count=0;  
    for (j=0;j<rx_buff_count;j++)  
    {rx_buff[j]='\0';}//  
    USART_SendStr("\n>");  
}  
  
int main(void)  
{   
    RCC_Configuration();  
    GPIO_INIT();  
    USART_int(9600);  
    GPIO_ResetBits(GPIOC,0x000000ff);//  
    delay_ms(200);  
    GPIO_SetBits(GPIOC,0x000000ff);//l
    USART_SendStr("SyStem booting......\r\n");//   
    USART_SendStr("\n>");//   
    while(1)  
        {}  
}  
  
void USART1_IRQHandler(void)   
{   
  while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET)  
  {  }   
    if(USART_ReceiveData(USART1)==0x0d)//  
    {input_ASK();}  
    else  
    {  
        USART_SendData(USART1,USART_ReceiveData(USART1));  
        rx_buff[rx_buff_count]= USART_ReceiveData(USART1);  
        rx_buff_count++;  
    }  
    USART_ClearFlag(USART1, USART_FLAG_RXNE);  
}  

系统滴答时钟18b20读取18b20的温度与id： 

/* Includes ------------------------------------------------------------------*/ 

#include "stm32f10x.h"    
#include "stm32_eval.h"     
#include  <stdio.h>   
  
volatile int flag;    
#define Set_B20()    GPIO_SetBits(GPIOC, GPIO_Pin_12)      //上拉关闭PC12    
#define Reset_B20()  GPIO_ResetBits(GPIOC, GPIO_Pin_12)  //下拉打开PC12    
#define Read_B20()   GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_12)  //读PC12状态    
unsigned char Error_Flag=0;    
unsigned char zf=0;    
void SysTick_Configuration(void)    
{    
  /* Setup SysTick Timer for 10 msec interrupts  */    
  if (SysTick_Config(48000))                //SysTick配置    
  {     
    /* Capture error */     
    while (1);    
  }      
 /* Configure the SysTick handler priority */    
  NVIC_SetPriority(SysTick_IRQn, 0x0);                       //SysTick中断优先级    
}    
    
    
/** @addtogroup STM32F10x_StdPeriph_Examples  
  * @{  
  */    
    
/** @addtogroup EXTI_Config  
  * @{  
  */     
    
/* Private typedef -----------------------------------------------------------*/    
/* Private define ------------------------------------------------------------*/    
/* Private macro -------------------------------------------------------------*/    
/* Private variables ---------------------------------------------------------*/    
GPIO_InitTypeDef   GPIO_InitStructure;  //结构体的命名  
USART_InitTypeDef USART_InitStructure;  //结构体的命名  
USART_ClockInitTypeDef USART_ClockInitStructure;  //结构体的命名  
    
void RCC_Configuration(void)    
{    
  RCC_DeInit();                 //将外设RCC的所有寄存器重新设为缺省值      
        
  RCC_HSICmd(ENABLE);            //使能内部高速晶振      
  while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);      //当SHI晶振就绪则重新设定     
      
  RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);      //设置系统时钟，选择SHI时钟为系统时钟    
      
  RCC_HSEConfig(RCC_HSE_OFF);     //设置外部高速晶振，HSE晶振OFF     
  RCC_LSEConfig(RCC_LSE_OFF);      //设置外部低速晶振，LSE晶振OFF      
        
    //******配置PLL时钟频率为48MHZ*******//    
        
  RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_8);    //RCC_PLLMul_x 即设置PLL时钟频率为 6*x MHz    
        
  //************************************//      
        
  RCC_PLLCmd(ENABLE);             ////*******************使能PLL     
  while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);        //PLL就绪      
  RCC_ADCCLKConfig(RCC_PCLK2_Div4);                     //  ADC时钟=PCLK/2      
  RCC_PCLK2Config(RCC_HCLK_Div1);                       //  APB2时钟=HCLK     
  RCC_PCLK1Config(RCC_HCLK_Div2);            /// APB1时钟=HCLK/2      
  RCC_HCLKConfig(RCC_SYSCLK_Div1);         //  AHB时钟=系统时钟     
  RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);       // 选择PLL为系统时钟      
  while(RCC_GetSYSCLKSource() != 0x08);        //当PLL不是系统时钟     
    
        
//  SystemInit();    
        
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE); //使能APB2外设时钟/****GPIOD时钟和功能复用IO时钟***/      
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG    SW_DP使能      
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);    
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG    
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;         // //选择设置GPIO管脚     
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  ////设置管脚速率      
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;     ////设置管脚工作状态，此为推挽输出      
  GPIO_Init(GPIOD, &GPIO_InitStructure);    //初始化GPIOD     
    GPIO_ResetBits(GPIOD,GPIO_Pin_2);     //上拉关闭蜂鸣器      
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);    
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG    
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7;//LED    
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;    
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;    
  GPIO_Init(GPIOC, &GPIO_InitStructure);    
    GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7); // GPIOC.0到GPIOC.7输出胃叩缙姜  
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //使能TIM2时钟    
}     
    
void USART_int(long BaudRate)    
{    
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);//使能GPIOA、USART1外设时钟    
       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;    
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  //GPIO的输出速率为50MHz  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;     
    GPIO_Init(GPIOA, &GPIO_InitStructure);    
    /* PA10 USART1_Rx  */    
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;    
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //使能外设GPIOC端口时钟  
    GPIO_Init(GPIOA, &GPIO_InitStructure);    
  /* USARTx configured as follow:  
        - BaudRate = 115200 baud    
        - Word Length = 8 Bits  
        - One Stop Bit  
        - No parity  
        - Hardware flow control disabled (RTS and CTS signals)  
        - Receive and transmit enabled  
  */    
  USART_InitStructure.USART_BaudRate = BaudRate;//设置USART传输波特率  BaudRate = 9600 可以直接写9600    
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;//一帧传输或者接收的数据位数为8bit    
  USART_InitStructure.USART_StopBits = USART_StopBits_1;//在帧结尾传输一个停止位    
  USART_InitStructure.USART_Parity = USART_Parity_No;//奇偶模式失能    
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//硬件流控制失能    
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//使能接收发模式    
    USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;    //时钟低电平活动    
    USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;      //引脚时钟输出低电平时钟    
    USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;     //第二个时钟边沿开始捕获数据    
    USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;//最后一位数据的时钟脉冲不从SCLK输出    
    USART_ClockInit(USART1, &USART_ClockInitStructure); //引用结构体的成员   
  USART_Init(USART1, &USART_InitStructure);//USART1初始化    
  USART_Cmd(USART1, ENABLE);//使能USART1时钟外设    
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//使能接受中断    
 USART_Cmd(USART1, ENABLE);  //使能 USART  
}    
    
void delay_18b20(u32 nus)    //18b20按照严格的时序工作，这是特定的一个延时函数（自定义）  
{    
    u16 i;    
    while(nus--)    
        for(i=12;i>0;i--);    
}    
    
    
        
void Init18B20(void)  //18B20初始化    
{    
   u8 aa=0;    
   u8 count =0;    
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能PC时钟    
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;  //配置端口GPIOC.12  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;//开漏输出    
  GPIO_Init(GPIOC, &GPIO_InitStructure); //引用结构体的变量   
   Set_B20() ;   // GPIO_SetBits(GPIOC, GPIO_Pin_12)     
   delay_18b20(1);    
   Reset_B20();  //重置18B20  
      
    
   delay_18b20(480);    
   Set_B20();    
//  delay_18b20(500);    
   delay_18b20(480);    
    
    count=0;    
    aa=Read_B20();         //温度读取    
    /****个人认为限制温度不超过99度，作为一个保护*/    
    while(!aa && count<100)  //判断aa的非和计数器count的值是否都小于100     
   {    
    aa=Read_B20();  //  
    count++;          //count自加1   
   }    
   if(count>=99)    
        Error_Flag=1;  //错误返回值1  
    else    
        Error_Flag=0;  //错误返回值0  
       
}    
      
unsigned char Read18B20(void)//按位读取数据    
{      
unsigned char i=0;    
unsigned char date=0;    
u8 tempp;    
   for(i=8;i>0;i--)    
   {    
    
   Reset_B20();   //打开PC12    
   date>>=1;    //标志右移一位    
   delay_18b20(1);    
   Set_B20();    //关闭    
    delay_18b20(1);    
   tempp=Read_B20();   //读取温度    
    
   if(tempp)   //判断tempp是否为1  
        date|=0x80;     // 1000 0000   将最高位填1 ，然后右移，每次最高位由0变1，使8位全部传递完毕 0xff = 1111 1111    
    delay_18b20(60);  //延时  
    }    
    return(date);  //返回值是无符号的字符型的类型 date  
}    
void Write18B20(unsigned char date)//向18b20写数据    
{    
    unsigned char i=0;    
    
    for (i=8; i>0; i--)    
    {    
        Reset_B20();     
        delay_18b20(1);             
        if(date & 0x01)             
        {       
            Set_B20();    
        }    
        else    
        {   Reset_B20();}    
        delay_18b20(60);    
        date>>=1;          
         Set_B20();    
         delay_18b20(1);    
                
    }    
    delay_18b20(15);    
}    
    
 float Read_T()//读温度    
{       
        unsigned char TUp,TDown;    
    unsigned char fTemp;    
    u8 TT=0;    
    
     float Temp = 0;    
    Init18B20();    
    Write18B20(0xcc);         
    Write18B20(0x44);        
    Init18B20();    
    Write18B20(0xcc);       
    Write18B20(0xbe);       
    TDown = Read18B20();        
    TUp = Read18B20();          
        
    if(TUp>0x7f)          
    {    
        TDown=~TDown;      
        TUp=~TUp+1;     
        TUp/=8;              
        zf=1;             
    }    
    else    
        zf=0;         
    
    fTemp=TDown&0x0f;           
    TUp<<=4;    
    TDown>>=4;    
    TT=TUp|TDown;    
    Temp=TT+(float)fTemp/16;            
    return(Temp);    
}    
                                   
int main(void)  
{  
          
  /*!< At this stage the microcontroller clock setting is already configured,  
       this is done through SystemInit() function which is called from startup 
       file (startup_stm32f10x_xx.s) before to branch to application main. 
       To reconfigure the default setting of SystemInit() function, refer to 
       system_stm32f10x.c file 
     */       
         
  /* System Clocks Configuration */  
    char ID[8];  
    int i;  
  RCC_Configuration();  
  USART_int(115200);  
    SysTick_Configuration();  
    printf(" config done...\r\n");  
  
      
    Init18B20();     //初始化  
    Write18B20(0x33);  //写入读取地址的命令  
    delay_18b20(20);  
    for(i=0;i<8;i++)   //这里必须用for不然 只会输出printf("event 1 oc......\r\n")这句，不会继续运行  
    {  
        ID[i] = Read18B20();//读取地址  
    }  
      
    while(1)  
    {  
        if(flag == 300)  
        {  
            printf("At the moment of ID is:")   ;   
            for(i=0;i<8;i++)     //字符不能直接输出，要按位输出  
        {  
          printf("%u",ID[i]);//输出地址  
        }  
            printf("\r\n")  ;  
        }  
        if(flag == 500)  
        {             
            printf("温度:%f\r\n",Read_T());//读取温度并输出  
            printf("===================================================\r\n");  
    }  
    }  
}  
  
    
#ifdef  USE_FULL_ASSERT    
    
/**  
  * @brief  Reports the name of the source file and the source line number  
  *         where the assert_param error has occurred.  
  * @param  file: pointer to the source file name  
  * @param  line: assert_param error line source number  
  * @retval None  
  */    
void assert_failed(uint8_t* file, uint32_t line)    
{     
  /* User can add his own implementation to report the file name and line number,  
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */    
    
  /* Infinite loop */    
  while (1)    
  {    
  }    
}    
    
#endif    
    
/**  
  * @}  
  */     
    
/**  
  * @}  
  */     
    
#ifdef __GNUC__    
  /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf  
     set to 'Yes') calls __io_putchar() */    
  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)    
#else    
  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)    
#endif /* __GNUC__ */    
      
    
    
/**  
  * @brief  Retargets the C library printf function to the USART.  
  * @param  None  
  * @retval None  
  */    
PUTCHAR_PROTOTYPE    
{    
  /* Place your implementation of fputc here */    
  /* e.g. write a character to the USART */    
  USART_SendData(EVAL_COM1, (uint8_t) ch);    
    
  /* Loop until the end of transmission */    
  while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)    
  {}    
    
  return ch;    
}    
    
#ifdef  USE_FULL_ASSERT    
    
/**  
  * @brief  Reports the name of the source file and the source line number  
  *         where the assert_param error has occurred.  
  * @param  file: pointer to the source file name  
  * @param  line: assert_param error line source number  
  * @retval None  
  */    
void assert_failed(uint8_t* file, uint32_t line)    
{     
  /* User can add his own implementation to report the file name and line number,  
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */    
    
  /* Infinite loop */    
  while (1)    
  {    
  }    
}    
    
#endif