EEPW论坛

#include "stm32f10x.h"     
#include "stm32_eval.h"     
#include      
#define VREF 3.3     
unsigned char i=0;     
  
EXTI_InitTypeDef   EXTI_InitStructure;       
NVIC_InitTypeDef   NVIC_InitStructure;     
GPIO_InitTypeDef   GPIO_InitStructure;     
USART_InitTypeDef USART_InitStructure;     
USART_ClockInitTypeDef USART_ClockInitStructure;     
  
  
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 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);     
}     
void GPIO_INIT()       
{       
      
  RCC_Configuration();       
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);       
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11;       
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;       
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;       
GPIO_Init(GPIOC, &GPIO_InitStructure);       
      
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);       
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;       
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;       
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;       
  GPIO_Init(GPIOB, &GPIO_InitStructure);       
}       
     
void Iic1_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);         
}     
     
     
/**********************************************************************/     
/*IIC?????                                                                               */     
/*                                                                                                                                          */     
/**********************************************************************/     
void I2C2_WriteByte(unsigned char id,unsigned char write_address,unsigned char byte)     
{     
        while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY));//?????????-??????     
        I2C_GenerateSTART(I2C2,ENABLE);//??i2c2??????     
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));//??????i2c???????     
        I2C_Send7bitAddress(I2C2,id,I2C_Direction_Transmitter);//?????i2c???????     
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));     
        I2C_SendData(I2C2, write_address);//??i2c??????     
        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);//??i2c2??????     
     
        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));//?????i2c????????     
     
        /* 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;     
}     
     
  
     
     
void anjian3_Config(void)     
{     
  /* Enable GPIOA clock */     
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);     
       
  /* Configure PA.00 pin as input floating */     
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;     
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;     
  GPIO_Init(GPIOA, &GPIO_InitStructure);     
     
  /* Enable AFIO clock */     
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);     
     
  /* Connect EXTI0 Line to PA.00 pin */     
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource10);     
     
  /* Configure EXTI0 line */     
  EXTI_InitStructure.EXTI_Line = EXTI_Line10;     
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;     
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;       
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;     
  EXTI_Init(&EXTI_InitStructure);     
     
  /* Enable and set EXTI0 Interrupt to the lowest priority */     
  NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;     
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;     
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;     
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;     
  NVIC_Init(&NVIC_InitStructure);     
}     
  
void IIC_TEST()     
{     
   printf("  config done...\r\n");       
    i = I2C2_ReadByte(0xA0,0);     
    i++;         
    printf("向地址第%d次写入数据   
\n",i);       
    I2C2_WriteByte(0xA0,0,i);       
      printf("向地址第%d次读出数据   
\n",i);       
    printf("第%d次上电....\r\n",i);     
           
       
}    
  
int main(void)       
{       
      
  
  RCC_Configuration();       
  anjian3_Config();     
  GPIO_INIT();       
  USART_int(115200);       
  Iic1_Init();     
  IIC_TEST();     
  
         
}       
  
void EXTI15_10_IRQHandler(void)     
{     
  if(EXTI_GetITStatus(EXTI_Line10) != RESET)     
  {     
        i=0;     
        I2C2_WriteByte(0xA0,0,0);    
                delay_ms(200);   
      printf("上电立即清0\r\n",i);     
    /* Clear the  EXTI line 8 pending bit */     
    EXTI_ClearITPendingBit(EXTI_Line10);     
  }     
}     
     
     
     
#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;       
} 

/**  
  ******************************************************************************  
  * @file    EXTI/EXTI_Config/main.c   
  * @author  MCD Application Team  
  * @version V3.5.0  
  * @date    08-April-2011  
  * @brief   Main program body  
  ******************************************************************************  
  * @attention  
  *  
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS  
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE  
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY  
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING  
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE  
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.  
  *  
  *  
 
    ? COPYRIGHT 2011 STMicroelectronics  
 
******************************************************************************  
  */    
  
/* Includes ------------------------------------------------------------------*/  
#include "stm32f10x.h"   
#include "stm32_eval.h"   
#include    
/** @addtogroup STM32F10x_StdPeriph_Examples  
  * @{  
  */  
  
/** @addtogroup EXTI_Config  
  * @{  
  */    
  
/* Private typedef -----------------------------------------------------------*/  
/* Private define ------------------------------------------------------------*/  
/* Private macro -------------------------------------------------------------*/  
/* Private variables ---------------------------------------------------------*/  
EXTI_InitTypeDef   EXTI_InitStructure;   
GPIO_InitTypeDef   GPIO_InitStructure;   
NVIC_InitTypeDef   NVIC_InitStructure;   
USART_InitTypeDef USART_InitStructure;   
USART_ClockInitTypeDef USART_ClockInitStructure;   
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;   
TIM_OCInitTypeDef  TIM_OCInitStructure;   
long flag,temp,num;   
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);   
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);   
            RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7, 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 NVIC_Configuration(void)   
{   
  NVIC_InitTypeDef NVIC_InitStructure;   
  
  /* Enable the TIM2 global Interrupt */  
  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;   
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;   
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;   
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;   
  NVIC_Init(&NVIC_InitStructure);   
       
      NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;   
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;   
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;   
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;   
      NVIC_Init(&NVIC_InitStructure);   
       
      NVIC_InitStructure.NVIC_IRQChannel = TIM7_IRQn;   
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;   
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;   
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;   
      NVIC_Init(&NVIC_InitStructure);   
       
    /* Time base configuration */  
  TIM_TimeBaseStructure.TIM_Period = 24000;   
  TIM_TimeBaseStructure.TIM_Prescaler = 0;   
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;   
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;   
  
       
    /*NVIC_InitStructure.NVIC_IRQChannel =TIM8_CC_IRQn;  
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;  
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  
      NVIC_Init(&NVIC_InitStructure);*/  
}   
  
/* Private functions ---------------------------------------------------------*/  
  
/**  
  * @brief  Main program.  
  * @param  None  
  * @retval None  
  */  
  
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);   
}   
  
  
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 */  
  RCC_Configuration();   
  
NVIC_Configuration();   
USART_int(115200);   
    printf(" config done...\r\n");   
  
     
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);   
  TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE );    
     
       
     TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);   
  TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE );    
       
     TIM_TimeBaseInit(TIM7, &TIM_TimeBaseStructure);   
  TIM_ITConfig(TIM7,TIM_IT_Update,ENABLE );    
       
    
     
  /* TIM2 enable counter */  
  TIM_Cmd(TIM2, ENABLE);   
     TIM_Cmd(TIM3, ENABLE);   
         TIM_Cmd(TIM7, ENABLE);   
  
  while (1){   
        if(flag == 2000)   
        {printf("TIM2 interrupt......\r\n");   
    flag = 0;   
    GPIO_ResetBits(GPIOC,GPIO_Pin_1|GPIO_Pin_0|GPIO_Pin_2|GPIO_Pin_3);   
            //delay_ms(80)   
  
  
  }   
  
        if(temp == 3000)   
        {printf("TIM3 interrupt......\r\n");   
    temp = 0;   
  GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3);   
  
                   
  }   
       
    if(num == 1000)   
        {printf("TIM7 interrupt......\r\n");   
    num = 0;   
  /*GPIO_ResetBits(GPIOC,GPIO_Pin_1|GPIO_Pin_0|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);  
        delay_ms(150);*/  
        GPIO_ResetBits(GPIOC,GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);   
  }   
  
  
}   
}   
void TIM2_IRQHandler(void) //TIM3 ??   
{   
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) //?? TIM3 ????????   
{   
TIM_ClearITPendingBit(TIM2, TIM_IT_Update ); //?? TIM3 ??????   
    flag++;   
  
}   
}   
void TIM3_IRQHandler(void) //TIM3 ??   
{   
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //?? TIM3 ????????   
{   
TIM_ClearITPendingBit(TIM3, TIM_IT_Update ); //?? TIM3 ??????   
    temp++;   
  
}   
}   
  
void TIM7_IRQHandler(void) //TIM3 ??   
{   
if (TIM_GetITStatus(TIM7, TIM_IT_Update) != RESET) //?? TIM3 ????????   
{   
TIM_ClearITPendingBit(TIM7, TIM_IT_Update ); //?? TIM3 ??????   
    num++;   
  
}   
}   
  
  
  
  
#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   
  
  
<P>   
    /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/  
</P>   
  
<P>   
       
  
</P>   
  
<P>   
       
  
</P>