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RGB&七彩灯代码作业

#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;  
     
void RCC_Configuration(void)  
{  
    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_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;  
    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;
  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_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 PWM_Config()  
{uint16_t PrescalerValue = 0;//预分频器值  
    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);//使能复用功能时钟  
      
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//复用推挽输出  
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
  GPIO_Init(GPIOA, &GPIO_InitStructure);  
      
        TIM_Cmd(TIM2, ENABLE);//TIM2使能  
      /* Compute the prescaler value */  
  PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;  
  /* Time base configuration */  
  TIM_TimeBaseStructure.TIM_Period = 0x07FF;//设置自动重装载  
  TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;//设置预分频值  
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;//设置时钟分割TDTS=Tck_tim  
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数  
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);//根据指定参数初始化TIMx  
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;//选择PWM模式1  
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//输出极性高  
  /* PWM1 Mode configuration: Channel2 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//通道占空比时间  
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);//初始化TIM2 OC2  
    /* PWM1 Mode configuration: Channel3 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//比较输出使能  
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//通道占空比时间  
  TIM_OC3Init(TIM2, &TIM_OCInitStructure);//初始化TIM2 OC3  
    /* PWM1 Mode configuration: Channel4 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//通道占空比时间  
  TIM_OC4Init(TIM2, &TIM_OCInitStructure);//初始化TIM2 OC4  
      
  TIM_ARRPreloadConfig(TIM2, ENABLE);//使能预装载寄存器  
}  
 
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_TEST()  
{ unsigned int temp0,temp1,temp2;  
    printf("PWM-RGB TEST......\r\n");  
    while(1)  
    {  
      if(temp0=2000,temp1=2000,temp2=0)  
             {TIM_SetCompare2(TIM2,temp0);delay_ms(500);   
       TIM_SetCompare3(TIM2,temp1);delay_ms(500);        
       TIM_SetCompare4(TIM2,temp2);delay_ms(500);  
            } 
     if(temp0=1900,temp1=0,temp2=1900)  
          {TIM_SetCompare2(TIM2,temp0);delay_ms(500);   
       TIM_SetCompare3(TIM2,temp1);delay_ms(500);        
       TIM_SetCompare4(TIM2,temp2);delay_ms(500);  
          }  
			 if(temp0=0,temp1=2000,temp2=2000)  
           {TIM_SetCompare2(TIM2,temp0);delay_ms(400);   
       TIM_SetCompare3(TIM2,temp1);delay_ms(500);        
       TIM_SetCompare4(TIM2,temp2);delay_ms(500);  
      } 		
 
    if(temp0=250,temp1=1700,temp2=1700)  
             {TIM_SetCompare2(TIM2,temp0);delay_ms(500);   
       TIM_SetCompare3(TIM2,temp1);delay_ms(500);        
       TIM_SetCompare4(TIM2,temp2);delay_ms(500);  
            }             
    if(temp0=500,temp1=300,temp2=1800)  
             {TIM_SetCompare2(TIM2,temp0);delay_ms(500);   
       TIM_SetCompare3(TIM2,temp1);delay_ms(500);        
       TIM_SetCompare4(TIM2,temp2);delay_ms(500);  
            }                                     
    if(temp0=400,temp1=1500,temp2=1000)  
             {TIM_SetCompare2(TIM2,temp0);delay_ms(500);   
       TIM_SetCompare3(TIM2,temp1);delay_ms(500);        
       TIM_SetCompare4(TIM2,temp2);delay_ms(500);  
            }             
   if(temp0=1300,temp1=800,temp2=1200)  
             {TIM_SetCompare2(TIM2,temp0);delay_ms(500);   
       TIM_SetCompare3(TIM2,temp1);delay_ms(500);        
       TIM_SetCompare4(TIM2,temp2);delay_ms(500);  
            }                 
         }  
}  
int main(void)  
{     
  RCC_Configuration();  
USART_int(115200);  
    printf(" config done...\r\n");  
    PWM_Config();  
    delay_ms(1000);  
    while(1)  
    {  
        PWM_TEST();  
    }  
}  
#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);  
  /* Loop until the end of transmission */  
  while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)  
  {}  
  return ch;  
}  
#ifdef  USE_FULL_ASSERT  
etval None  
  */  
void assert_failed(uint8_t* file, uint32_t line)  
{   
  while (1)  
  {  
  }  
}  
#endif

RGB&七彩灯代码作业视频

ADC 控制RGB颜色作业代码与视频

这是在之前PWM的基础上简单更改的，加上了ADC的结构体 初始化 还有一些参数.

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

#include "stm32f10x.h"    
#include "stm32_eval.h"    
#include     
#define VREF 3.3     
    
/* Private typedef -----------------------------------------------------------*/    
/* Private define ------------------------------------------------------------*/    
/* Private macro -------------------------------------------------------------*/    
/* Private variables ---------------------------------------------------------*/    
GPIO_InitTypeDef   GPIO_InitStructure;    
USART_InitTypeDef USART_InitStructure;    
USART_ClockInitTypeDef USART_ClockInitStructure;    
    
void RCC_Configuration(void)    
{  
    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    
 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;    
  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 */    
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;    
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;    
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);    
    /* PWM1 Mode configuration: Channel3 */    
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;    
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;    
  TIM_OC3Init(TIM2, &TIM_OCInitStructure);    
    /* PWM1 Mode configuration: Channel4 */    
  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);   //复位ADC1，同时设置分频因子  
#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;    
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;    
  GPIO_Init(GPIOB, &GPIO_InitStructure);    
        
      
  /* ADC1 configuration ------------------------------------------------------*/    
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;  //ADC工作模式：独立模式  
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;  //AD单通道模式  
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;  //AD单次转换模式  
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;  //转换由软件而不是外部触发启动  
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;  //ADC数据右对齐  
  ADC_InitStructure.ADC_NbrOfChannel = 1;  //顺序进行规则转换的ADC通道的数目1  
  ADC_Init(ADC1, &ADC_InitStructure);  //根据指定参数初始化外设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);  //规则序列中的第1个转换，采样周期为55.5  
    /* Enable ADC1 reset calibration register */       
  ADC_ResetCalibration(ADC1);  //执行复位校准  
  /* Check the end of ADC1 reset calibration register */    
  while(ADC_GetResetCalibrationStatus(ADC1));    
   /* Start ADC1 calibration */    
  ADC_StartCalibration(ADC1);  //执行ADC校准，开始指定的ADC1的校准状态  
  /* Check the end of ADC1 calibration */    
  while(ADC_GetCalibrationStatus(ADC1));           
  /* Start ADC1 Software Conversion */     
  ADC_SoftwareStartConvCmd(ADC1, ENABLE);  //软件开启ADC转换       
    return ADC_GetConversionValue(ADC1);    
}    
  void PWM_TEST()    
{     
    float Volt=0.00;    
    unsigned int temp0,temp1,temp2,ADValue = 0;    
    while(1)    
{    
      ADValue = Get_ADC();    
        Volt = VREF*ADValue/4095;    
        printf("PWM-RGB & ADC TEST......\r\n\r\n");    
        printf("The ADC value is:%d\r\n",ADValue);    
        printf("The Volt is:%f V\r\n",Volt);    
      TIM_SetCompare2(TIM2, temp0);    
      TIM_SetCompare3(TIM2, temp1);    
      TIM_SetCompare4(TIM2, temp2);    
        if(ADValue>3000)    
         {  temp0=ADValue/2;temp1=ADValue/2;temp2=ADValue/2-1500;    
         }  
                 if(2000Libraries->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__ */     
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    
void assert_failed(uint8_t* file, uint32_t line)    
{      
  while (1)    
  {    
  }    
}    
    
#endif 

IIC-计上电次数作业代码

#include "stm32f10x.h"  
#include "stm32_eval.h"  
#include   
#define VREF 3.3  
unsigned char i=0;  
void EXTIkeyS1_Config(void);  
/* Private typedef -----------------------------------------------------------*/  
/* Private define ------------------------------------------------------------*/  
/* Private macro -------------------------------------------------------------*/  
/* Private variables ---------------------------------------------------------*/  
GPIO_InitTypeDef   GPIO_InitStructure;  
USART_InitTypeDef USART_InitStructure;  
USART_ClockInitTypeDef USART_ClockInitStructure;  
EXTI_InitTypeDef   EXTI_InitStructure;  
NVIC_InitTypeDef   NVIC_InitStructure;  
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_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;  
    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);  
      /* Configure four bit for preemption priority */  
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);  
  /* Enable the USART1 Interrupt */  
  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; //  
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;  
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  
  NVIC_Init(&NVIC_InitStructure);  
}  
  
void IIc2_Init(void)  
{  
        GPIO_InitTypeDef GPIO_InitStructure;  
        I2C_InitTypeDef I2C_InitStructure;  
          
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);  
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C2, ENABLE);  
        //PB6-I2C2_SCL PB7-I2C2_SDA PB10-I2C2_SCL PB11-I2C2_SDA  
        /* Configure IO connected to IIC*********************/  
        GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_10 | GPIO_Pin_11;  
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;  
        GPIO_Init(GPIOB, &GPIO_InitStructure);  
          
        I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;  
        I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;  
        I2C_InitStructure.I2C_OwnAddress1 = 0xA0;  
        I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;  
        I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;  
        I2C_InitStructure.I2C_ClockSpeed = 400000;         
        I2C_Cmd(I2C2, ENABLE);     
        I2C_Init(I2C2, &I2C_InitStructure);  
        I2C_AcknowledgeConfig(I2C2, ENABLE);      
}  
  
void I2C2_WriteByte(unsigned char id,unsigned char write_address,unsigned char byte)  
{  
        while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY));  
        I2C_GenerateSTART(I2C2,ENABLE);  
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));  
        I2C_Send7bitAddress(I2C2,id,I2C_Direction_Transmitter);  
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));  
        I2C_SendData(I2C2, write_address);  
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));  
        I2C_SendData(I2C2, byte);  
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));  
        I2C_GenerateSTOP(I2C2, ENABLE);  
        do  
        {                  
           /* Send START condition */  
           I2C_GenerateSTART(I2C2, ENABLE);  
          /* Read I2C2 SR1 register */  
            /* Send EEPROM address for write */  
            I2C_Send7bitAddress(I2C2, 0xA0, I2C_Direction_Transmitter);  
        }while(!(I2C_ReadRegister(I2C2, I2C_Register_SR1) & 0x0002));  
  
        /* Clear AF flag */  
        I2C_ClearFlag(I2C2, I2C_FLAG_AF);  
        /* STOP condition */      
        I2C_GenerateSTOP(I2C2, ENABLE);    
}  
  
unsigned char I2C2_ReadByte(unsigned char  id, unsigned char read_address)  
{    
     unsigned char temp;           
     while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY)){}  
     I2C_GenerateSTART(I2C2, ENABLE);  
     while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));  
     I2C_Send7bitAddress(I2C2, id, I2C_Direction_Transmitter);  
     while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));  
     I2C_Cmd(I2C2, ENABLE);  
     I2C_SendData(I2C2, read_address);    
     while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));  
     I2C_GenerateSTART(I2C2, ENABLE);  
     while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));  
     I2C_Send7bitAddress(I2C2, id, I2C_Direction_Receiver);  
     while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));  
    I2C_AcknowledgeConfig(I2C2, DISABLE);  
    I2C_GenerateSTOP(I2C2, ENABLE);  
    while(!(I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED)));  
    temp = I2C_ReceiveData(I2C2);  
    I2C_AcknowledgeConfig(I2C2, ENABLE);  
     return temp;  
}  
  
/*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);  
}  
 
int main(void)  
{  
  RCC_Configuration();  
  EXTIkeyS1_Config();  
  USART_int(115200);  
  IIc2_Init();  
    printf(" config done...\r\n");  
    i = I2C2_ReadByte(0xA0,0);//向0x00读取数据  
    printf("从地址0x00读出数据 :%d\r\n",i);  
    i++;  
    I2C2_WriteByte(0xA0,0,i);//向0x00写入数据  
    printf("向地址0x00写入数据 :%d\r\n",i);  
    while(1)  
    {  
     delay_ms(1000);  
     printf(" 上电次数为%d\r\n",i);  
    }  
}  
void EXTIkeyS1_Config(void)//S1 PC8  
{  
  /* Enable GPIOA clock */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);  
  /* Configure PA.00 pin as input floating */  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;//PC8 S1  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;  
  GPIO_Init(GPIOC, &GPIO_InitStructure);  
  /* Enable AFIO clock */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);  
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource8);  
  EXTI_InitStructure.EXTI_Line = EXTI_Line8;  
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;  
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;    
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;  
  EXTI_Init(&EXTI_InitStructure);  
  NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;  
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;  
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;  
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  
  NVIC_Init(&NVIC_InitStructure);  
}  
void EXTI9_5_IRQHandler(void)  
{  
  if(EXTI_GetITStatus(EXTI_Line8) != RESET)  
  {  
        i=0;  
        I2C2_WriteByte(0xA0,0,0);  
        printf(" 上电次数为%d\r\n",i);  
    /* Clear the  EXTI line 8 pending bit */  
    EXTI_ClearITPendingBit(EXTI_Line8);  
  }  
}  
#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  

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