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LLM29

菜鸟

2014-11-13 21:07:44 打赏

11楼

怎么理，不太能理解呢~~

LLM29

菜鸟

2014-11-26 09:38:50 打赏

12楼

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32_eval.h"
#include 
EXTI_InitTypeDef   EXTI_InitStructure;
GPIO_InitTypeDef   GPIO_InitStructure;
NVIC_InitTypeDef   NVIC_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
/* Private function prototypes -----------------------------------------------*/
void EXTIkeyS1_Config(void);
void EXTIkeyS2_Config(void);
void EXTIkeyS3_Config(void);
void EXTIkeyS4_Config(void);
void RCC_Configuration(void)
{
  RCC_DeInit();
    
  RCC_HSICmd(ENABLE);
  while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);
  
  RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);
  
  RCC_HSEConfig(RCC_HSE_OFF);
  RCC_LSEConfig(RCC_LSE_OFF);
  RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); //  72HMz
  RCC_PLLCmd(ENABLE);
  while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
  RCC_ADCCLKConfig(RCC_PCLK2_Div4);
  RCC_PCLK2Config(RCC_HCLK_Div1);
  RCC_PCLK1Config(RCC_HCLK_Div2);
  RCC_HCLKConfig(RCC_SYSCLK_Div1);
  RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
  while(RCC_GetSYSCLKSource() != 0x08);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG
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_ResetBits(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);
}

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);
 
  /* 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);
}
/* Private functions ---------------------------------------------------------*/
/**
  * @brief  Main program.
  * @param  None
  * @retval None
  */
int main(void)
{RCC_Configuration();  
  /* Configure PA.00 in interrupt mode */
  EXTIkeyS1_Config();
  /* Configure PB.09 or PG.08 in interrupt mode */
  EXTIkeyS2_Config();
	 EXTIkeyS3_Config();
EXTIkeyS4_Config();
USART_int(115200);
	printf(" Config done,waiting for interrupt......\r\n");        
  while (1)
  {
  }
}
/**
  * @brief  Configure PA.00 in interrupt mode
  * @param  None
  * @retval None
  */
void EXTIkeyS1_Config(void)
{
  /* Enable GPIOA clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能时钟区
  
  /* Configure PA.00 pin as input floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);//使用PA8
  /* Enable AFIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
  /* Connect EXTI0 Line to PA.00 pin */
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource8);  //GPIOC.8 中断线以及中断初始化配置 下降沿触发
  /* Configure EXTI0 line */
  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);  //根据指定的参数初始化中断线的参数

  /* Enable and set EXTI0 Interrupt to the lowest priority */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn;//使能按键所在的外部中断通道
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;//抢占优先级15
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;//子优先级15
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能外部中断通道
  NVIC_Init(&NVIC_InitStructure);//初始化
}
/**
  * @brief  Configure PB.09 or PG.08 in interrupt mode
  * @param  None
  * @retval None
  */
void EXTIkeyS2_Config(void)
{
  /* Enable GPIOB clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);

  /* Configure PB.09 pin as input floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /* Enable AFIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
  /* Connect EXTI9 Line to PB.09 pin */
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource9);// GPIOC.9 中断线以及中断初始化配置 下降沿触发

  /* Configure EXTI9 line */
  EXTI_InitStructure.EXTI_Line = EXTI_Line9;
  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 EXTI9_5 Interrupt to the lowest priority */
  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 EXTIkeyS3_Config(void)
{
  /* Enable GPIOA clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能时钟区
  
   /* Configure PB.09 pin as input floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /* Enable AFIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);

  /* Connect EXTI0 Line to PA.00 pin */
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource10);  //GPIOC.10 中断线以及中断初始化配置 下降沿触发

  /* 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);  //根据指定的参数初始化中断线的参数

  /* Enable and set EXTI0 Interrupt to the lowest priority */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;//使能按键所在的外部中断通道
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;//抢占优先级15
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;//子优先级15
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能外部中断通道
  NVIC_Init(&NVIC_InitStructure);//初始化
}
void EXTIkeyS4_Config(void)
{
  /* Enable GPIOA clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能时钟区
  
  /* Configure PB.09 pin as input floating */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

  /* Enable AFIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);

  /* Connect EXTI0 Line to PA.00 pin */
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource11);  //GPIOC.11 中断线以及中断初始化配置 下降沿触发

  /* Configure EXTI0 line */
  EXTI_InitStructure.EXTI_Line = EXTI_Line11;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;  
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);  //根据指定的参数初始化中断线的参数

  /* Enable and set EXTI0 Interrupt to the lowest priority */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;//使能按键所在的外部中断通道
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;//抢占优先级15
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;//子优先级15
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能外部中断通道
  NVIC_Init(&NVIC_InitStructure);//初始化
}
void EXTI9_5_IRQHandler(void)
{
  if(EXTI_GetITStatus(EXTI_Line9) != RESET)
  {
    /* Toggle LED2 */
     GPIO_SetBits(GPIOC,GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
printf("S2 interrupt ......\r\n");
    /* Clear the  EXTI line 9 pending bit */
    EXTI_ClearITPendingBit(EXTI_Line9);
  }
	if(EXTI_GetITStatus(EXTI_Line8) != RESET)
  {
    /* Toggle LED1 */
     GPIO_SetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3);
printf("S1 interrupt ......\r\n");
    /* Clear the  EXTI line 0 pending bit */
    EXTI_ClearITPendingBit(EXTI_Line8);
  }
}
void EXTI15_10_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line10) != RESET)
  {
    /* Toggle LED2 */
     GPIO_ResetBits(GPIOC,GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
printf("S3 interrupt ......\r\n");
    /* Clear the  EXTI line 9 pending bit */
    EXTI_ClearITPendingBit(EXTI_Line10);
  }
	if(EXTI_GetITStatus(EXTI_Line11) != RESET)
  {
    /* Toggle LED1 */
     GPIO_ResetBits(GPIOC,GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3);
printf("S4 interrupt ......\r\n");
    /* Clear the  EXTI line 0 pending bit */
    EXTI_ClearITPendingBit(EXTI_Line11);
  }
}
#ifdef  USE_FULL_ASSERT
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__ */
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)
{ 
  /* 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

LLM29

菜鸟

2014-11-26 09:40:39 打赏

13楼


#include "stm32f10x.h"
#include "stm32_eval.h"
#include 

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;
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)//外设时钟使能
{
	SystemInit();
	
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  管脚映射重映射
  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|RCC_APB1Periph_TIM3, ENABLE);//TIM2  TIM3
	
		RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);//TIM8
	
}

void USART_int(long BaudRate)//USART1初始化
{
	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);

  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);//使能USART1	
}

void NVIC_Configuration(void)//中断优先级设置
{
  NVIC_InitTypeDef NVIC_InitStructure;//定义结构体变量
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);//设置优先级分组
  /* Enable the TIM2 global Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;//TIM2TIM3中断
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;//先占优先级0级
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 5;//从优先级1级
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//IRQ通道被使能
	NVIC_Init(&NVIC_InitStructure);//初始化NVIC寄存器
	
	/* Enable the TIM3 global Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;//TIM2TIM3中断
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;//先占优先级0级
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 8;//从优先级1级
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//IRQ通道被使能
  NVIC_Init(&NVIC_InitStructure);//初始化NVIC寄存器
	
	/* Enable the TIM8 global Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;//TIM2TIM3中断
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;//先占优先级0级
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;//从优先级1级
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//IRQ通道被使能
  NVIC_Init(&NVIC_InitStructure);//初始化NVIC寄存器
}

void Timer_Config(void)
{
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;//定义结构体变量
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);//使能TIM2外设
	TIM_DeInit(TIM2);//复位时钟TIM2，恢复初始状态
	 /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 36000;//周期
  TIM_TimeBaseStructure.TIM_Prescaler = 1000;//分频系数
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//设置时钟分割
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数模式
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);//初始化TIM2	
	TIM_ClearFlag(TIM2,TIM_FLAG_Update);//清楚标志
  TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE ); //使能TIM2的更新中断
  /* TIM2 enable counter */
  TIM_Cmd(TIM2, ENABLE);//使能TIM2外设
	
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);//使能TIM3外设
	TIM_DeInit(TIM3);//复位时钟TIM3，恢复初始状态
	 /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 56000;//周期
  TIM_TimeBaseStructure.TIM_Prescaler = 1000;//分频系数
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//设置时钟分割
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数模式
  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);//初始化TIM3
	TIM_ClearFlag(TIM3,TIM_FLAG_Update);//清楚标志
  TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //使能TIM3的更新中断
  /* TIM2 enable counter */
  TIM_Cmd(TIM3, ENABLE);//使能TIM3外设

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);//使能TIM8外设
	TIM_DeInit(TIM8);//复位时钟TIM8，恢复初始状态
	 /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 50000;//周期
  TIM_TimeBaseStructure.TIM_Prescaler = 1100;//分频系数
  TIM_TimeBaseStructure.TIM_ClockDivision =TIM_CKD_DIV1 ;//设置时钟分割
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数模式
  TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);//初始化TIM2	
	TIM_ClearFlag(TIM8,TIM_FLAG_Update);//清楚标志
  TIM_ITConfig(TIM8,TIM_IT_Update,ENABLE ); //使能TIM8的更新中断
  /* TIM2 enable counter */
  TIM_Cmd(TIM8, ENABLE);//使能TIM2外设
}

void TIM2_IRQHandler(void) //TIM2中断
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) //检查TIM2更新中断发生与否
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update ); //清除TIM2更新中断标志
	GPIO_SetBits(GPIOC,GPIO_Pin_1);
}
}

void TIM3_IRQHandler(void) //TIM2中断
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //检查TIM2更新中断发生与否
{
TIM_ClearITPendingBit(TIM3, TIM_IT_Update ); //清除TIM2更新中断标志
	GPIO_SetBits(GPIOC,GPIO_Pin_2);
}
}

void TIM8_IRQHandler(void) //TIM2中断
{
if (TIM_GetITStatus(TIM8, TIM_IT_Update) != RESET) //检查TIM2更新中断发生与否
{
TIM_ClearITPendingBit(TIM8, TIM_IT_Update ); //清除TIM2更新中断标志
	GPIO_SetBits(GPIOC,GPIO_Pin_3);
}
}

int main(void)
{
  

  RCC_Configuration();
  USART_int(115200);
	NVIC_Configuration();
	printf(" config done...\r\n");
  Timer_Config();
 TIM2_IRQHandler();
 TIM3_IRQHandler();
	TIM8_IRQHandler();
 
  while (1){		
GPIO_ResetBits(GPIOC,GPIO_Pin_1);
		delay_ms(200);
GPIO_ResetBits(GPIOC,GPIO_Pin_2);
		delay_ms(400);
GPIO_ResetBits(GPIOC,GPIO_Pin_3);
		delay_ms(200);
}
}

#ifdef  USE_FULL_ASSERT


void assert_failed(uint8_t* file, uint32_t line)
{ 
  
  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

LLM29

菜鸟

2014-11-26 12:12:29 打赏

14楼

没做，只是还没来得及提问呢~~~

LLM29

菜鸟

2014-11-26 12:25:09 打赏

15楼

TIM8没定义把它改成其他基本定时器就可以了 TIM8还不懂用正在反省

LLM29

菜鸟

2014-12-02 21:55:08 打赏

16楼

简单地改下占空比而已，就是这么简单笨拙

#include "stm32f10x.h"
#include "stm32_eval.h"
#include 
#define VREF 3.3
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)
{
	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 PWM_Config()
{uint16_t PrescalerValue = 0;//预分频器值
	TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;
	/* TIM2 clock enable */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
  /* GPIOA  enable */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO  , ENABLE);//使能复用功能时钟
	
		GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//复用推挽输出
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
	
		TIM_Cmd(TIM2, ENABLE);//TIM2使能
	  /* Compute the prescaler value */
  PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;
  /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 0x07FF;//设置自动重装载
  TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;//设置预分频值
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;//设置时钟分割TDTS=Tck_tim
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;//向上计数
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);//根据指定参数初始化TIMx
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;//选择PWM模式1
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;//输出极性高
  /* PWM1 Mode configuration: Channel2 */
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//通道占空比时间
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);//初始化TIM2 OC2
	/* PWM1 Mode configuration: Channel3 */
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;//比较输出使能
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//通道占空比时间
  TIM_OC3Init(TIM2, &TIM_OCInitStructure);//初始化TIM2 OC3
	/* PWM1 Mode configuration: Channel4 */
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;//通道占空比时间
  TIM_OC4Init(TIM2, &TIM_OCInitStructure);//初始化TIM2 OC4
	
  TIM_ARRPreloadConfig(TIM2, ENABLE);//使能预装载寄存器
}

void PWM_TEST()
{ unsigned int temp0,temp1,temp2;
	printf("PWM-RGB TEST......\r\n");
	while(1)
	{
   if(temp0=0,temp1=2047,temp2=2047)
		   {TIM_SetCompare2(TIM2,temp0);delay_ms(400); 
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);      
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);
      }
	if(temp0=2047,temp1=0,temp2=2047)
		  {TIM_SetCompare2(TIM2,temp0);delay_ms(400); 
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);      
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);
          }
	if(temp0=2047,temp1=2047,temp2=0)
			 {TIM_SetCompare2(TIM2,temp0);delay_ms(400); 
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);      
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);
            }
	if(temp0=250,temp1=1750,temp2=1750)
			 {TIM_SetCompare2(TIM2,temp0);delay_ms(400); 
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);      
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);
            }			
  if(temp0=500,temp1=250,temp2=1750)
			 {TIM_SetCompare2(TIM2,temp0);delay_ms(400); 
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);      
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);
            }			  						
	if(temp0=500,temp1=1500,temp2=1000)
			 {TIM_SetCompare2(TIM2,temp0);delay_ms(400); 
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);      
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);
            }			
   if(temp0=1250,temp1=750,temp2=1250)
			 {TIM_SetCompare2(TIM2,temp0);delay_ms(400); 
       TIM_SetCompare3(TIM2,temp1);delay_ms(400);      
       TIM_SetCompare4(TIM2,temp2);delay_ms(400);
            }				
		 }
}
int main(void)
{	
  RCC_Configuration();
USART_int(115200);
	printf(" config done...\r\n");
	PWM_Config();
	delay_ms(1000);
	while(1)
	{
		PWM_TEST();
	}
}
#ifdef  USE_FULL_ASSERT
void assert_failed(uint8_t* file, uint32_t line)
{while (1)
  {
  }
}
#endif
/**
  * @}
  */ 
/**
  * @}
  */ 
#ifdef __GNUC__
  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */
PUTCHAR_PROTOTYPE
{
  USART_SendData(EVAL_COM1, (uint8_t) ch);
  /* Loop until the end of transmission */
  while (USART_GetFlagStatus(EVAL_COM1, USART_FLAG_TC) == RESET)
  {}
  return ch;
}
#ifdef  USE_FULL_ASSERT
etval None
  */
void assert_failed(uint8_t* file, uint32_t line)
{ 
  while (1)
  {
  }
}
#endif

LLM29

菜鸟

2014-12-11 23:43:36 打赏

17楼

#include "stm32f10x.h"  
#include "stm32_eval.h"  
#include <stdio.h>  
#define VREF 3.3  
GPIO_InitTypeDef   GPIO_InitStructure;  
USART_InitTypeDef USART_InitStructure;  
USART_ClockInitTypeDef USART_ClockInitStructure;  
EXTI_InitTypeDef   EXTI_InitStructure;  
NVIC_InitTypeDef   NVIC_InitStructure;  
void RCC_Configuration(void)  
{  
  RCC_DeInit();    
  RCC_HSICmd(ENABLE);  
  while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);  
  RCC_SYSCLKConfig(RCC_SYSCLKSource_HSI);  
  RCC_HSEConfig(RCC_HSE_OFF);  
  RCC_LSEConfig(RCC_LSE_OFF);  
  RCC_PLLConfig(RCC_PLLSource_HSI_Div2,RCC_PLLMul_9); //  72HMz  
  RCC_PLLCmd(ENABLE);  
  while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);  
  RCC_ADCCLKConfig(RCC_PCLK2_Div4);  
  RCC_PCLK2Config(RCC_HCLK_Div1);  
  RCC_PCLK1Config(RCC_HCLK_Div2);  
  RCC_HCLKConfig(RCC_SYSCLK_Div1);  
  RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);  
  while(RCC_GetSYSCLKSource() != 0x08);  
    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 GPIO_INIT()  
{  
    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);  
      
    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);  
}  
  
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_us(u32 n)  
{  
    u8 j;  
    while(n--)  
    for(j=0;j<10;j++);  
}  
  
void  delay_ms(u32 n)  
{  
    while(n--)  
    delay_us(1000);  
}  
  
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);      
}  
uint16_t Dis_tab[]={GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14|GPIO_Pin_13|GPIO_Pin_8,//0
	GPIO_Pin_9|GPIO_Pin_12,//1
	GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_14|GPIO_Pin_13|GPIO_Pin_5,//2
	GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14|GPIO_Pin_5,//3
	GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_8|GPIO_Pin_5,//4
	GPIO_Pin_7|GPIO_Pin_12|GPIO_Pin_14|GPIO_Pin_8|GPIO_Pin_5,//5
	GPIO_Pin_7|GPIO_Pin_12|GPIO_Pin_14|GPIO_Pin_13|GPIO_Pin_8|GPIO_Pin_5,//6
	GPIO_Pin_7|GPIO_Pin_9|GPIO_Pin_12,//7
	GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14,//8
	GPIO_Pin_5|GPIO_Pin_7|GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_12|GPIO_Pin_14//9
	};  

unsigned char i=0; 
void Dis_number(unsigned char i)  
{     
	 
	GPIO_SetBits(GPIOB,GPIO_Pin_15);//PB15 on  
                        GPIO_ResetBits(GPIOB,Dis_tab[i/10]);     
						delay_ms(20);
				                GPIO_ResetBits(GPIOB,GPIO_Pin_15);//PB15 off
				                GPIO_ResetBits(GPIOB,Dis_tab[i/10]);
				 delay_ms(2);
                        GPIO_SetBits(GPIOB,GPIO_Pin_1);//PB1  on  
                        GPIO_ResetBits(GPIOB,Dis_tab[i%10]);
					 delay_ms(20);
				                GPIO_ResetBits(GPIOB,GPIO_Pin_1);//PB1 off
						            GPIO_SetBits(GPIOB,Dis_tab[i%10]);  //off 
				  delay_ms(2); 
	 
}  
  
void EXTIkeyS1_Config(void)  
{  
  /* Enable GPIOA clock */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);  
    
  /* Configure PA.00 pin as input floating */  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;  
  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_PinSource8);  
  
  /* Configure EXTI0 line */  
  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);  
  
  /* Enable and set EXTI0 Interrupt to the lowest priority */  
  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 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;  
}   
 
void IIC_TEST()
{
	unsigned char count=0;
	count=I2C2_ReadByte(0xA0,0);
	Dis_number(count);
}
int main(void)  
{   
  RCC_Configuration();  
  GPIO_INIT();  
    USART_int(115200);    
    Iic1_Init();  
  EXTIkeyS1_Config();     
    printf(" config done...\r\n");  
    delay_ms(1000);  
    while(1)  
    {  
           IIC_TEST();   
    }  
}         
void EXTI9_5_IRQHandler(void)  
{  
    if(EXTI_GetITStatus(EXTI_Line8) != RESET)  
  {  
        i++;  
        I2C2_WriteByte(0xA0,0,i);  
    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

只能部分显示出现错误的应该是

void Dis_number(unsigned char i)
{

GPIO_SetBits(GPIOB,GPIO_Pin_15);//PB15 on
GPIO_ResetBits(GPIOB,Dis_tab[i/10]);
delay_ms(20);
GPIO_ResetBits(GPIOB,GPIO_Pin_15);//PB15 off
GPIO_ResetBits(GPIOB,Dis_tab[i/10]);
delay_ms(2);
GPIO_SetBits(GPIOB,GPIO_Pin_1);//PB1 on
GPIO_ResetBits(GPIOB,Dis_tab[i%10]);
delay_ms(20);
GPIO_ResetBits(GPIOB,GPIO_Pin_1);//PB1 off
GPIO_SetBits(GPIOB,Dis_tab[i%10]); //off
delay_ms(2);

}

这是复制之前作业的，不懂问题在哪里

LLM29

菜鸟

2014-12-17 10:22:00 打赏

18楼

是可以运行的，就是数码管没有按照想象中的样子显示

LLM29

菜鸟

2014-12-17 10:26:54 打赏

19楼

IIC视频，之前没上传成功就忘了

LLM29

菜鸟

2014-12-21 10:51:28 打赏

20楼

ADC&RGB

这是在之前PWM的基础上简单更改的，加上了ADC的结构体初始化还有一些参数，就可以简单控制RGB的颜色了

视频后面再贴

/* 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)  
{
    SystemInit();  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);  
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);  
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;  
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;  
  GPIO_Init(GPIOD, &GPIO_InitStructure);  
    GPIO_ResetBits(GPIOD,GPIO_Pin_2);  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);  
 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//disable JTAG  
 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);  
}   
  
void USART_int(long BaudRate)  
{  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);  
       GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;  
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;   
    GPIO_Init(GPIOA, &GPIO_InitStructure);  
    /* PA10 USART1_Rx  */  
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;  
    GPIO_Init(GPIOA, &GPIO_InitStructure);  
  /* USARTx configured as follow: 
        - BaudRate = 115200 baud   
        - Word Length = 8 Bits 
        - One Stop Bit 
        - No parity 
        - Hardware flow control disabled (RTS and CTS signals) 
        - Receive and transmit enabled 
  */  
  USART_InitStructure.USART_BaudRate = BaudRate;//??????  
  USART_InitStructure.USART_WordLength = USART_WordLength_8b;//???????8bit  
  USART_InitStructure.USART_StopBits = USART_StopBits_1;//????1  
  USART_InitStructure.USART_Parity = USART_Parity_No;//????  
  USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//??????none  
  USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//??????????  
    USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;       
    USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;        
    USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;        
    USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;  
    USART_ClockInit(USART1, &USART_ClockInitStructure);  
  USART_Init(USART1, &USART_InitStructure);  
  USART_Cmd(USART1, ENABLE);  
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);  
 USART_Cmd(USART1, ENABLE);  
}  
  
void delay_us(u32 n)  
{  
    u8 j;  
    while(n--)  
    for(j=0;j<10;j++);  
}  
void  delay_ms(u32 n)  
{  
    while(n--)  
    delay_us(1000);  
}  
  
void PWM_Config()  
{uint16_t PrescalerValue = 0;  
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;  
TIM_OCInitTypeDef  TIM_OCInitStructure;  
    /* TIM2 clock enable */  
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);  
  /* GPIOA  enable */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO  , ENABLE);  
      
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
  GPIO_Init(GPIOA, &GPIO_InitStructure);  
        TIM_Cmd(TIM2, ENABLE);  
      /* Compute the prescaler value */  
  PrescalerValue = (uint16_t) (SystemCoreClock / 24000000) - 1;  
  /* Time base configuration */  
  TIM_TimeBaseStructure.TIM_Period = 0x07FF;  
  TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;  
  TIM_TimeBaseStructure.TIM_ClockDivision = 0;  
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);  
  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;  
  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;  
  /* PWM1 Mode configuration: Channel2 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;  
  TIM_OC2Init(TIM2, &TIM_OCInitStructure);  
    /* PWM1 Mode configuration: Channel3 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;  
  TIM_OC3Init(TIM2, &TIM_OCInitStructure);  
    /* PWM1 Mode configuration: Channel4 */  
  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  
  TIM_OCInitStructure.TIM_Pulse = 0xFFFF;  
  TIM_OC4Init(TIM2, &TIM_OCInitStructure);  
  TIM_ARRPreloadConfig(TIM2, ENABLE);  
}  
  
  
  
void ADC_CONFIG(){  
    ADC_InitTypeDef ADC_InitStructure;  
    #if defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || defined (STM32F10X_HD_VL)  
  /* ADCCLK = PCLK2/2 */  
  RCC_ADCCLKConfig(RCC_PCLK2_Div2);   //复位ADC1，同时设置分频因子
#else  
  /* ADCCLK = PCLK2/4 */  
  RCC_ADCCLKConfig(RCC_PCLK2_Div4);   
#endif  
ADC_DeInit(ADC1);  
  /* Enable ADC1 and GPIOC clock */  
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOB, ENABLE);  
      
    /* Configure PB0 (ADC Channel14) as analog input -------------------------*/  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;  
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;  
  GPIO_Init(GPIOB, &GPIO_InitStructure);  
      
    
  /* ADC1 configuration ------------------------------------------------------*/  
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;  //ADC工作模式：独立模式
  ADC_InitStructure.ADC_ScanConvMode = ENABLE;  //AD单通道模式
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;  //AD单次转换模式
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;  //转换由软件而不是外部触发启动
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;  //ADC数据右对齐
  ADC_InitStructure.ADC_NbrOfChannel = 1;  //顺序进行规则转换的ADC通道的数目1
  ADC_Init(ADC1, &ADC_InitStructure);  //根据指定参数初始化外设ADC1
  /* Enable ADC1 DMA */  
  ADC_DMACmd(ADC1, ENABLE);    
  /* Enable ADC1 */  
  ADC_Cmd(ADC1, ENABLE);  
}  
 int Get_ADC(){  
     /* ADC1 regular channel configuration */   
  ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_55Cycles5);  //规则序列中的第1个转换，采样周期为55.5
    /* Enable ADC1 reset calibration register */     
  ADC_ResetCalibration(ADC1);  //执行复位校准
  /* Check the end of ADC1 reset calibration register */  
  while(ADC_GetResetCalibrationStatus(ADC1));  
   /* Start ADC1 calibration */  
  ADC_StartCalibration(ADC1);  //执行ADC校准，开始指定的ADC1的校准状态
  /* Check the end of ADC1 calibration */  
  while(ADC_GetCalibrationStatus(ADC1));         
  /* Start ADC1 Software Conversion */   
  ADC_SoftwareStartConvCmd(ADC1, ENABLE);  //软件开启ADC转换     
    return ADC_GetConversionValue(ADC1);  
}  
  void PWM_TEST()  
{   
    float Volt=0.00;  
    unsigned int temp0,temp1,temp2,ADValue = 0;  
    while(1)  
{  
      ADValue = Get_ADC();  
        Volt = VREF*ADValue/4095;  
        printf("PWM-RGB & ADC TEST......\r\n\r\n");  
        printf("The ADC value is:%d\r\n",ADValue);  
        printf("The Volt is:%f V\r\n",Volt);  
      TIM_SetCompare2(TIM2, temp0);  
      TIM_SetCompare3(TIM2, temp1);  
      TIM_SetCompare4(TIM2, temp2);  
        if(ADValue>3000)  
         {  temp0=ADValue/2;temp1=ADValue/2;temp2=ADValue/2-1500;  
         }
				 if(2000<ADValue<=3000)  
        {  temp0=ADValue/2;temp1=ADValue/2-1000;temp2=ADValue/2;  
        }
				if(1000<ADValue<=2000)  
        {  temp0=ADValue/2+1000;temp1=ADValue/2;temp2=ADValue/2;  
        }
				if(ADValue<=1000)  
        {  temp0=ADValue+500;temp1=ADValue+1500;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  
void assert_failed(uint8_t* file, uint32_t line)  
{   
  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__ */   
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

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