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系统滴答&18B20

#include "stm32f10x.h"  
#include "stm32_eval.h"  
#include <stdio.h>  
volatile int flag;  
#define Set_B20()    GPIO_SetBits(GPIOC, GPIO_Pin_12)  
#define Reset_B20()  GPIO_ResetBits(GPIOC, GPIO_Pin_12)  
#define Read_B20()   GPIO_ReadInputDataBit(GPIOC,GPIO_Pin_12)  
unsigned char Error_Flag=0;  
unsigned char zf=0;  
unsigned char ID[8];  
void SysTick_Configuration(void)  
{  
  /* Setup SysTick Timer for 1 msec interrupts  */  
  if (SysTick_Config(48000))                //SysTick配置 48000/48MHZ=1ms 滴答一次  
  {   
    /* Capture error */   
    while (1);  
  }    
 /* Configure the SysTick handler priority */  
  NVIC_SetPriority(SysTick_IRQn, 0x0);                       //SysTick中断优先级  
}  
  
GPIO_InitTypeDef   GPIO_InitStructure;  
USART_InitTypeDef USART_InitStructure;  
USART_ClockInitTypeDef USART_ClockInitStructure;  
#define RCC_PLLSource_HSE_Div1           ((uint32_t)0x00010000)  
  
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_6); // 6*8Mhz= 48MHz  
  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);  
}  
  
void delay_18b20(u32 nus)  
{  
    u16 i;  
    while(nus--)  
        for(i=12;i>0;i--);  
}  
/*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 Init18B20(void)//18B20初始化  
{  
   u8 aa=0;  
   u8 count =0;  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE); //GPIOC的复用时钟使能  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;//选择PC12  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;//开漏输出  
  GPIO_Init(GPIOC, &GPIO_InitStructure);//GPIOC初始化  
   Set_B20() ;  
    /*复位时需要至少480us的低电平*/  
   delay_18b20(1);  
   Reset_B20();  
   delay_18b20(480);  
    /* 探测到上升沿后等待15~60us后18B20发出存在脉冲 */  
   Set_B20();  
   delay_18b20(480);  
  
    count=0;  
    aa=Read_B20();//读取18B20的一个字节 赋值给aa  
      
    /*   校验读取值，错误次数大于99才报错 */  
    while(!aa && count<100)     
   {  
    aa=Read_B20();  
        count++;  
   }  
   if(count>=99)  
        Error_Flag=1;  
    else  
        Error_Flag=0;  
}  
    
unsigned char Read18B20(void)//读取18B20的一个字节  
{    
    unsigned char i=0;  
    unsigned char date=0;  
    u8 tempp;  
   for(i=8;i>0;i--)//按位读取，读取一个字需要循环8次  
   {  
        Reset_B20();//拉低电平  
        date>>=1;//date右移一位  
        delay_18b20(1);  
        Set_B20(); //置高电平  
    delay_18b20(1);  
        tempp=Read_B20();//读取温度值  
        if(tempp)//若读取到的值非0  
    {date|=0x80;} //将date的最高位置1  
        delay_18b20(60);  
    }  
    return(date);  
}  
void Write18B20(unsigned char date)//写入  
{  
    unsigned char i=0;  
  
    for (i=8; i>0; i--)  
    {  
        Reset_B20(); //置低电平  
        delay_18b20(1);           
        if(date & 0x01)     //如果date最低位为1     
        {     
            Set_B20();//置高电平  
        }  
        else//如果date最低位为0  
        {  
            Reset_B20();}//置低电平  
            delay_18b20(60);  
            date>>=1;     //date右移一位  
            Set_B20();//置高电平  
            delay_18b20(1);  
    }  
    delay_18b20(15);  
}  
  
 float Read_T()//读取温度值  
{     
    unsigned char TUp,TDown;  
    unsigned char fTemp;  
    u8 TT=0;  
    float Temp = 0;  
    Init18B20();//1820初始化  
    Write18B20(0xcc); //不提供64位ROM编码使用存储器        
    Write18B20(0x44); //启动一次温度转换       
    Init18B20();//1820初始化  
    Write18B20(0xcc); //不提供64位ROM编码使用存储器      
    Write18B20(0xbe);   //从字节0开始读取暂存器内容  
    /*两次读取温度*/  
    TDown = Read18B20();      
    TUp = Read18B20();        
      
    if(TUp>0x7f)    //  如果TUp的值大于最大值（11111111）bin  
    {  
        TDown=~TDown;  //TDown取反  
        TUp=~TUp+1; //TUp取反加一  
        TUp/=8; //TUp除以8           
        zf=1;    //zf标志位置1       
    }  
    else  
        zf=0;       
    fTemp=TDown&0x0f;//TDown保留后四位，赋值给fTemp    
    TUp<<=4;//TUp左移四位，舍去高四位  
    TDown>>=4;//TDown右移四位，舍去低四位  
    TT=TUp|TDown;//TUp与TDown合并 赋值给TT  
    Temp=TT+(float)fTemp/16;          
    return(Temp);  
}  
                                   
int main(void)  
{  
    int i;  
    RCC_Configuration();  
    USART_int(115200);  
    Init18B20();//初始化18B20  
    SysTick_Configuration();//系统滴答时钟配置  
  
    printf(" config done...\r\n");  
    Write18B20(0x33);//此命令获取18B20的ID  
    for(i=0;i<8;i++)//用一个8位的数组保存id值  
    {  
        ID[i]=Read18B20();  
    }  
    delay_ms(1000);  
    while(1)  
    {}  
}  
  
void SysTick_Handler(void)  
{  
  int i;  
    flag++;  
    if(flag==300)//每300ms输出一次id  
    {  
        printf("\r\nevent 1 oc......\r\n");  
        printf("The id is :\r\n");  
        for(i=0;i<8;i++)  
        {  
            printf("%u",ID[i]);  
        }  
    }  
    else if(flag==500)//每500ms输出一次温度  
    {  
        printf("\r\nevent 2 oc......\r\n");  
        printf("The Temperature is:%f\r\n",Read_T());     
        flag = 0;  
    }  
}  
#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

spi串口

#include "stm32f10x.h"  
#include "stm32_eval.h"  
#include <stdio.h>  
#include "spi_flash.h"  
#define VREF 3.3  
  
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);  
}  
  
  
#define TxBufferSize1   (countof(TxBuffer1) - 1)  
#define RxBufferSize1   (countof(TxBuffer1) - 1)  
#define countof(a)      (sizeof(a) / sizeof(*(a)))  
#define  BufferSize (countof(Tx_Buffer)-1)  
typedef enum { FAILED = 0, PASSED = !FAILED} TestStatus;  
#define  FLASH_WriteAddress     0x00000  
#define  FLASH_ReadAddress      FLASH_WriteAddress  
#define  FLASH_SectorToErase    FLASH_WriteAddress  
#define  sFLASH_ID              0xEF3015     //W25X16  
//#define  sFLASH_ID              0xEF4015   //W25Q16  
#define buff_size  16;       
char rx_buff[],rx_buff_count=0;  

uint8_t Tx_Buffer[4096] ;  
uint8_t Rx_Buffer[BufferSize];  
__IO uint32_t DeviceID = 0;  
__IO uint32_t FlashID = 0;  
__IO TestStatus TransferStatus1 = FAILED;  
  
void Delay(__IO uint32_t nCount);  
TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength);  
  
GPIO_InitTypeDef   GPIO_InitStructure;  
USART_InitTypeDef USART_InitStructure;  
USART_ClockInitTypeDef USART_ClockInitStructure;  
  
char *int_to_string(int number,char *strnum)//整形数据转换为字符型  
{  
int j=0,i=0,n=0;  
char temp;  
while(number>0)  
{  
*(strnum+j)=number%10+48;  
j++;  
number=number/10;  
n++;  
}  
  
      
for(i=0;i<n/2;i++)  
{  
temp=*(strnum+j+i-n);  
*(strnum+j+i-n)=*(strnum+j-i-1);  
*(strnum+j-i-1)=temp;  
}  
strnum[n]='\0';  
return strnum;  
}  
  
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);  
  USART_InitStructure.USART_BaudRate = BaudRate; 
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit  
  USART_InitStructure.USART_StopBits = USART_StopBits_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);  
}  
  
TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength)  
{  
  while(BufferLength--)  
  {  
    if(*pBuffer1 != *pBuffer2)  
    {  
      return FAILED;  
    }  
  
    pBuffer1++;  
    pBuffer2++;  
  }  
  return PASSED;  
}  
  
void Delay(__IO uint32_t nCount)  
{  
  for(; nCount != 0; nCount--);  
}  
  
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  

  RCC_ADCCLKConfig(RCC_PCLK2_Div4);   
#endif  
ADC_DeInit(ADC1);  
 
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOB, ENABLE);  
  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_InitStructure.ADC_ScanConvMode = ENABLE;  
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;  
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;  
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;  
  ADC_InitStructure.ADC_NbrOfChannel = 1;  
  ADC_Init(ADC1, &ADC_InitStructure);  
  
  
  /* 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);  
    /* Enable ADC1 reset calibration register */     
  ADC_ResetCalibration(ADC1);  
  /* Check the end of ADC1 reset calibration register */  
  while(ADC_GetResetCalibrationStatus(ADC1));  
  
  /* Start ADC1 calibration */  
  ADC_StartCalibration(ADC1);  
  /* Check the end of ADC1 calibration */  
  while(ADC_GetCalibrationStatus(ADC1));  
       
  /* Start ADC1 Software Conversion */   
  ADC_SoftwareStartConvCmd(ADC1, ENABLE);  
      
    return ADC_GetConversionValue(ADC1);  
}  
  
  
void SPI_TEST()  
{  
    printf("\r\n这是一个2M SPI总线flash(W25X16)测试 \r\n");  
    SPI_FLASH_Init();  
    /* Get SPI Flash Device ID */  
    DeviceID = SPI_FLASH_ReadDeviceID();  
    Delay( 200 );  
    /* Get SPI Flash ID */  
    FlashID = SPI_FLASH_ReadID();  
    printf("\r\n FlashID is 0x%X,  Manufacturer Device ID is 0x%X\r\n", FlashID, DeviceID);  
    /* Check the SPI Flash ID */  
    if (FlashID == sFLASH_ID)  /* #define  sFLASH_ID  0xEF3015 */  
    {  
        printf("\r\n 检测到华邦flash W25X16 !\r\n");  
        /* Erase SPI FLASH Sector to write on */  
        SPI_FLASH_SectorErase(FLASH_SectorToErase);        
          
        SPI_FLASH_BufferWrite(Tx_Buffer, FLASH_WriteAddress, BufferSize);  
        printf("\r\n写入的数据是:%s \r\t", Tx_Buffer);  
          
        /* 读出刚才写入的数据*/  
        SPI_FLASH_BufferRead(Rx_Buffer, FLASH_ReadAddress, BufferSize);  
        printf("\r\n读出的数据是:%s \r\n", Rx_Buffer);  
          
        /* ????????????????? */  
        TransferStatus1 = Buffercmp(Tx_Buffer, Rx_Buffer, BufferSize);  
          
        if( PASSED == TransferStatus1 )  
        {      
            printf("\r\n 2M SPI总线flash(W25X16)测试成功!\n\r");  
        }  
        else  
        {          
            printf("\r\n 2M SPI总线flash(W25X16)测试失败!\n\r");  
        }  
    }// if (FlashID == sFLASH_ID)  
    else  
    {      
        printf("\r\n 未检测到 W25X16 ID!\n\r");  
    }  
      
    SPI_Flash_PowerDown();    
    printf("\r\n=================================================\n\r");  
}  
/* Private functions ---------------------------------------------------------*/  
  
/** 
  * @brief  Main program. 
  * @param  None 
  * @retval None 
  */  
int main(void)  
{  
          
    int i=0;  
    int ADValue = 0;  
     char Buffer[100];  
  RCC_Configuration();  
  USART_int(115200);  
 printf(" config done...\r\n");  
    ADC_CONFIG();  
    delay_ms(1000);  
    while(1)  
    {  
          
        for(i=0;i<5;i++)  
        {   
              ADValue = Get_ADC();  
              int_to_string(ADValue,Buffer);  
            Tx_Buffer[i]=Buffer[i];  
    }  
      SPI_TEST();  
        delay_ms(1000);  
    }  
}  
  
#ifdef  USE_FULL_ASSERT  
  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  
  
void assert_failed(uint8_t* file, uint32_t line)  
{   
  while (1)  
  {  
  }  
}  
  
#endif

IIC-计上电次数

#include "stm32f10x.h"    
#include "stm32_eval.h"    
#include "STM32_I2C.h"  
#include <stdio.h>    
  
GPIO_InitTypeDef   GPIO_InitStructure;  
USART_InitTypeDef USART_InitStructure;  
USART_ClockInitTypeDef USART_ClockInitStructure;  
EXTI_InitTypeDef   EXTI_InitStructure;  
NVIC_InitTypeDef   NVIC_InitStructure;  
unsigned char i;  
void EXTIkeyS1_Config(void);  
  
/*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 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;  
}  
  
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(2000);  
     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  
  
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