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电子产品世界 » 论坛首页 » 高校专区 » 漓东e学堂 » 时钟滴答-这是08的作业

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高工

2014-11-27 23:04:55 打赏

21楼

别哭别哭，注释一下就好了

评论

嵌入式你好08

菜鸟

2014-11-27 23:42:08 打赏

22楼

今晚板子疯掉了，程序可能要晚点了~还有老师复制上来之后，头文件都有缺失，#include <stdio.h>这个居然消失了。

评论

嵌入式你好08

菜鸟

2014-11-28 00:03:48 打赏

23楼

脑子已经乱掉了，板子也被我整疯了~

评论

嵌入式你好08

菜鸟

2014-12-03 15:01:52 打赏

24楼

简单的作业二：TIM中断

/** 
  ****************************************************************************** 
  * @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 flag1=0;
long flag2=0;
long flag3=0;

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);  //点亮LED
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //TIM2.3.7
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7, ENABLE);  
}  
  
void USART_int(long BaudRate)  //串行口通讯速率
{  
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);  //配置时钟
    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;//串口波特率
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;//数据位宽
  USART_InitStructure.USART_StopBits = USART_StopBits_1;//停止位宽
  USART_InitStructure.USART_Parity = USART_Parity_No;//校检位宽
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//工作模式
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//设置工作模式
	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);
  USART_Init(USART1, &USART_InitStructure);
  USART_Cmd(USART1, ENABLE);
	USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
 USART_Cmd(USART1, ENABLE);
}
  
void NVIC_Configuration(void)     
{     
  /* Enable the TIM2 global Interrupt */    
  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;     
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;//先占优先级0  1s 
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;//副优先级0    
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;     
    NVIC_Init(&NVIC_InitStructure);     
    /* Enable the TIM3 global Interrupt */    
     NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;     
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;//先占优先级0  0.5s
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //副优先级0   
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;     
  NVIC_Init(&NVIC_InitStructure);     
	 /* Enable the TIM7 global Interrupt */    
     NVIC_InitStructure.NVIC_IRQChannel = TIM7_IRQn;     
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;//先占优先级0      
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;//副优先级0  
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;     
  NVIC_Init(&NVIC_InitStructure);
}     
  /* Time base configuration */    
void TIM2_Configuration(void)//1s     
{     
  TIM_TimeBaseStructure.TIM_Period =35999 ;//计数值，即自动加载值ARR    
  TIM_TimeBaseStructure.TIM_Prescaler =1999 ; //(35999+1)*(1999+1)/72MHz=1s  
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;     
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数     
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);   
  TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE); //开启定时器2    
  TIM_Cmd(TIM2, ENABLE);  
}     
void TIM3_Configuration(void)//0.5s     
{     
  TIM_TimeBaseStructure.TIM_Period = 17999;//0.5s     
  TIM_TimeBaseStructure.TIM_Prescaler = 1999;   
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;     
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;     
  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);  
  TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE);     
  TIM_Cmd(TIM3, ENABLE);//    
}     
void TIM7_Configuration(void)//1.8s     
{     
  TIM_TimeBaseStructure.TIM_Period = 64799;   
  TIM_TimeBaseStructure.TIM_Prescaler =1999;     
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;     
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;     
  TIM_TimeBaseInit(TIM7, &TIM_TimeBaseStructure);  
  TIM_ITConfig(TIM7, TIM_IT_Update, ENABLE);     
  TIM_Cmd(TIM7, ENABLE);//    
} 

int main(void)     
{     
  /* System Clocks Configuration */    
  RCC_Configuration();     
  NVIC_Configuration();     
  USART_int(115200);     
  TIM2_Configuration();     
  TIM3_Configuration();     
  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);     
         
  printf(" Config done...\r\n");     
  while (1)     
 {     
    if(flag1 == 0)     
    {     
        printf("TIM2 interrupt......\r\n");     
    GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2);    
   }     
    if(flag2 == 0)     
    {     
       printf("TIM3 interrupt......\r\n");     
       GPIO_SetBits(GPIOC,GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5);     
   }     
 }     
	  if(flag3 == 0)     
    {     
       printf("TIM7 interrupt......\r\n");     
       GPIO_SetBits(GPIOC,GPIO_Pin_6|GPIO_Pin_7);     
   } 
 }     
     
    
void TIM2_IRQHandler(void) //TIM2    
{     
    if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)      
    {     
        TIM_ClearITPendingBit(TIM2, TIM_IT_Update );      
        GPIO_ResetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2);     
    }     
}     
    
void TIM3_IRQHandler(void) //TIM3     
{     
    if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)      
    {     
        TIM_ClearITPendingBit(TIM3, TIM_IT_Update );      
        GPIO_ResetBits(GPIOC,GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5);     
    }     
}     
  
void TIM7_IRQHandler(void) //TIM7     
{     
    if (TIM_GetITStatus(TIM7, TIM_IT_Update) != RESET)      
    {     
        TIM_ClearITPendingBit(TIM7, TIM_IT_Update );      
        GPIO_ResetBits(GPIOC,GPIO_Pin_6|GPIO_Pin_7);     
    }     
}   
#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

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

评论

嵌入式你好08

菜鸟

2014-12-03 15:05:28 打赏

25楼

PWM--呼吸灯RGB。青+橙→蓝色→蓝+桃红→白→橙→青→蓝→灭

/**
  ******************************************************************************
  * @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 "delay.h"
#include 
#define VREF 3.3
/** @addtogroup STM32F10x_StdPeriph_Examples
  * @{
  */

/** @addtogroup EXTI_Config
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
GPIO_InitTypeDef   GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;

void RCC_Configuration(void)//RCC的配置函数
{/*
  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;
  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 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;//开启时钟
	/* TIM2 clock enable */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//使能TIM2时钟
  /* GPIOA  enable */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO  , ENABLE);//使能AFIO时钟
	
		GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;//RGB
  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;//周期
  TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;//分频
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;//时钟分割
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;//PWM1
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//输出极性为高电平
  /* PWM1 Mode configuration: Channel2 */
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//PWM功能使能
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//占空比
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);//选择通道2，使能预装载寄存器
	/* PWM1 Mode configuration: Channel3 */
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;
  TIM_OC3Init(TIM2, &TIM_OCInitStructure);//使能预装载寄存器
	/* PWM1 Mode configuration: Channel4 */
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;
  TIM_OC4Init(TIM2, &TIM_OCInitStructure);//使能预装载寄存器
  TIM_ARRPreloadConfig(TIM2, ENABLE);//允许自动重装载寄存器
}

void PWM_TEST()
{
	u8 led_fx=1;
	unsigned int temp0=0,temp1=1000,temp2=2000,temp3=3000,temp4=3500,temp5=4000;
	printf("PWM-RGB TEST......\r\n");
	while(1)
		{
			for(led_fx=1;led_fx<9;led_fx++)
			{
     delay_ms(10);
		if(led_fx==1)
		{
			temp0++;
		}	
		else
		{
			temp0--;
		}
		if(temp0<2047)
			led_fx=0;
		if(temp0>=2047)
			led_fx=1;
		TIM_SetCompare2(TIM2,temp0);

		if(led_fx==2)
		{
			temp1++;
		}	
		else
		{
			temp1--;
		}
		if(temp1<2047)
			led_fx=0;
		if(temp1>=2047)
			led_fx=1;
   TIM_SetCompare3(TIM2,temp1);
		
		if(led_fx==3)
		{
			temp2++;
		}	
		else
		{
			temp2--;
		}
		if(temp2<2047)
			led_fx=0;
		if(temp2>=2047)
			led_fx=1;
		TIM_SetCompare4(TIM2,temp2);
		
		if(led_fx==4)
		{
			temp3++;
		}	
		else
		{
			temp3--;
		}
		if(temp3<2047)
			led_fx=0;
		if(temp3>=2047)
			led_fx=1;
		TIM_SetCompare2(TIM2,temp3);
		
		if(led_fx==5)
		{
			temp4++;
		}	
		else
		{
			temp4--;
		}
		if(temp4<2047)
			led_fx=0;
		if(temp4>=2047)
			led_fx=1;
		TIM_SetCompare3(TIM2,temp4);	
		
		if(led_fx==6)
		{
			temp5++;
		}	
		else
		{
			temp5--;
		}
		if(temp5<2047)
			led_fx=0;
		if(temp5>=2047)
			led_fx=1;
    TIM_SetCompare4(TIM2,temp5);		
	 }
 }
}


/* Private functions ---------------------------------------------------------*/

/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
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();
USART_int(115200);
	
	printf(" config done...\r\n");
	PWM_Config();
	delay_ms(1000);
	while(1)
	{
		PWM_TEST();
	}
}



#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

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/

评论

买西瓜送熙熙

菜鸟

2014-12-04 15:02:57 打赏

26楼

月黑风高夜呀楼主

好像你视频里桃红，橙色，青色不太明显呢

评论

嵌入式你好08

菜鸟

2014-12-05 11:23:08 打赏

27楼

两种颜色混在一起就拍不清楚了~

评论

高工

2014-12-08 21:06:27 打赏

28楼

最后的绿色真是渗人

为什么开头有暗暗的红色呢？

评论

嵌入式你好08

菜鸟

2014-12-16 18:25:53 打赏

29楼

ADC:

/* Includes ------------------------------------------------------------------*/  
#include "stm32f10x.h"  
#include "stm32_eval.h"  
#include <stdio.h>  
#define VREF 3.3  
/** @addtogroup STM32F10x_StdPeriph_Examples 
  * @{ 
  */  
  
/** @addtogroup EXTI_Config 
  * @{ 
  */   
  
/* Private typedef -----------------------------------------------------------*/  
/* Private define ------------------------------------------------------------*/  
/* Private macro -------------------------------------------------------------*/  
/* Private variables ---------------------------------------------------------*/  
GPIO_InitTypeDef   GPIO_InitStructure;  
USART_InitTypeDef USART_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); 
*/  
    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;  
  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);   
#else  
  /* ADCCLK = PCLK2/4 */  
  RCC_ADCCLKConfig(RCC_PCLK2_Div4); //72M/6=12,最大时间不能超过14  
#endif  
ADC_DeInit(ADC1);  
  /* Enable ADC1 and GPIOC clock */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOB, ENABLE);//使能ADC1通道时钟，各个管教时钟
      
    /* 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;//独立工作模式
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;//扫描方式
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;//连续转换开启
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;//外部触发禁止
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;//右对齐方式
  ADC_InitStructure.ADC_NbrOfChannel = 1;//设置转换序列长度为1
  ADC_Init(ADC1, &ADC_InitStructure);//调用函数，初始化ADC1


  /* Enable ADC1 DMA */
  ADC_DMACmd(ADC1, ENABLE);//开启ADC的DMA支持
  
  /* Enable ADC1 */
  ADC_Cmd(ADC1, ENABLE);

}

  
int Get_ADC()//ADC自动效准
{
	 /* ADC1 regular channel configuration */ //设置制定ADC的规则组通道，设置它们的转化顺序和采样时间
  ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_55Cycles5);
	/* Enable ADC1 reset calibration register */   
  ADC_ResetCalibration(ADC1);//复位指定的ADC1的校准寄存器
  /* Check the end of ADC1 reset calibration register */
  while(ADC_GetResetCalibrationStatus(ADC1));//获取ADC1复位校准寄存器的状态，设置状态则等待

  /* Start ADC1 calibration */
  ADC_StartCalibration(ADC1);//开始指定ADC1的校准状态
  /* Check the end of ADC1 calibration */
  while(ADC_GetCalibrationStatus(ADC1));//获取指定ADC1的校准程序，设置状态则等待
     
  /* Start ADC1 Software Conversion */ 
  ADC_SoftwareStartConvCmd(ADC1, ENABLE);//ADC1转换启动
	
	return ADC_GetConversionValue(ADC1);//返回最近一次ADC1规则组的转换结果
}
  
void PWM_TEST()  
{   
    float Volt=0.00;  
    unsigned int temp0,temp1,temp2,ADValue = 0;  
    while(1)  
{  
      ADValue = Get_ADC();  
        Volt = VREF*ADValue/4095;  
        printf("===============================\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/2-1300;temp1=ADValue/2-600;temp2=ADValue/2-150;  
         }if(2000<ADValue<=3000)  
        {  temp0=ADValue/2-300;temp1=ADValue/2-1000;temp2=ADValue/2-50;  
        }if(1000<ADValue<=2000)  
        {  temp0=ADValue/2+900;temp1=ADValue/2;temp2=ADValue/2-500;  
        }if(ADValue<=1000)  
        {  temp0=ADValue+100;temp1=ADValue+800;temp2=ADValue+1000;  
        }  
            delay_ms(50);  
}  
      
}  
  
/* Private functions ---------------------------------------------------------*/  
  
/** 
  * @brief  Main program. 
  * @param  None 
  * @retval None 
  */  
int main(void)  
{  
    RCC_Configuration();  
  USART_int(115200);  
    ADC_CONFIG();  
    printf(" config done...\r\n");  
    Get_ADC();  
    PWM_Config();  
    delay_ms(200);  
    while(1)  
    {    
        PWM_TEST();  
    }  
}  
  
  
  
#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

评论

嵌入式你好08

菜鸟

2014-12-16 18:27:39 打赏

30楼

IIC：偶数上电计数

#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=0;  
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 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;//Tlov/Thigh=2
        I2C_InitStructure.I2C_OwnAddress1 = 0xA0;//作为从机时的地址
        I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;//使能I2C的应答
        I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;//应答7位的地址
        I2C_InitStructure.I2C_ClockSpeed = 400000;//I2C速率为400KHz（快速模式）       
        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));//等待I2C
        I2C_GenerateSTART(I2C2,ENABLE);//产生起始信号
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_MODE_SELECT));//确定主机模式是否成功（检测EV5）EV5
        I2C_Send7bitAddress(I2C2,id,I2C_Direction_Transmitter);//发送器件地址（写）
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));//检测主机传输模式是否成功（检测EV6）EV6
        I2C_SendData(I2C2, write_address);//通过外设I2C发送地址
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));//检测主机发送的字节是否成功（检测EV8）EV8
        I2C_SendData(I2C2, byte);//通过外设T2C发送数据
        while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_TRANSMITTED));//检测主机发送的字节是否成功（检测EV8）
        I2C_GenerateSTOP(I2C2, ENABLE);//产生I2C2传输STOP条件  
        do  
        {                  
           /* Send START condition */  
           I2C_GenerateSTART(I2C2, ENABLE); //产生I2C2传输的START条件 
          /* Read I2C2 SR1 register */  
            /* Send EEPROM address for write */  
            I2C_Send7bitAddress(I2C2, 0xA0, I2C_Direction_Transmitter);  
        }while(!(I2C_ReadRegister(I2C2, I2C_Register_SR1) & 0x0002));  //地址发送结束
  
        /* Clear AF flag */  
        I2C_ClearFlag(I2C2, I2C_FLAG_AF);//清除I2Cx的应答错误标志位  
        /* STOP condition */      
        I2C_GenerateSTOP(I2C2, ENABLE);//产生I2C2传输START条件      
}  
  
unsigned char I2C2_ReadByte(unsigned char  id, unsigned char read_address)  
{    
     unsigned char temp;           
     while(I2C_GetFlagStatus(I2C2, I2C_FLAG_BUSY))//等待I2C空闲
			 {}  
     I2C_GenerateSTART(I2C2, ENABLE);//写模式
     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);//读模式  
     while(!I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));//等待读取事件，在读取数据  
    I2C_AcknowledgeConfig(I2C2, DISABLE); //关闭应答和停止条件产生 
    I2C_GenerateSTOP(I2C2, ENABLE);  
    while(!(I2C_CheckEvent(I2C2, I2C_EVENT_MASTER_BYTE_RECEIVED)));  
    temp = I2C_ReceiveData(I2C2);  
    I2C_AcknowledgeConfig(I2C2, ENABLE);  
     return temp;  
}  
  

void EXTIkeyS1_Config(void)//S1 
{  
  /* Enable GPIOA clock */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);  
  /* Configure PA.00 pin as input floating */  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;//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(" 按键清%d\r\n",i);  
    /* Clear the  EXTI line 8 pending bit */  
    EXTI_ClearITPendingBit(EXTI_Line8);  
  }  
}  

int main(void)  
{  
  RCC_Configuration();  
  EXTIkeyS1_Config();  
  USART_int(115200);  
  Iic1_Init();  
    printf(" config done...\r\n");  
    i = I2C2_ReadByte(0xA0,0);//
    printf("write data to address:%d\r\n",i);  
    i++;  
    I2C2_WriteByte(0xA0,0,i);// 
    printf("Reading data from address:%d\r\n",i);  
    while(1)  
    {  
     delay_ms(2000);  
     printf(" 上电计数:%d\r\n",i);  
    }  
}  
  
#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

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