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菜鸟
2014-11-06 23:52:50     打赏
11楼

串口发送信息控制LED闪烁速度作业

       从买回jlink学习调试。遇到了各种很多问题。这两天才开始写代码。代码的写入也是曲折重重。不过总算是写好了。总算是对C语言有那么一丁点感觉了。代码写的比较丑。望大神们指导改良。写的过程中我想实现在输入指令后使我的了LED 灯一直循环亮着的,等下一次输入的时候再关闭,然后开始新延迟时间循环点亮LED灯。但是结果是一直在循环。只有Rese后才能够重新输入新的LED 灯延迟时间。

       然后我就放弃了这一想法。现在我的循环是数据输入一次就可以按输入的延迟时间,点亮LED灯。依次亮一次后需要下一次的输入才能够再次亮起来。

   我的代码如下:

#include "stm32f10x.h"  
#include "stm32_eval.h"  
#include    "stdio.h"  
#include "math.h"  
#define buff_size  16;
/**  
  * @brief  Main program.  
  * @param  None  
  * @retval None  
  */ 
char rx_buff[], rx_buff_count=0;  
  
GPIO_InitTypeDef  GPIO_InitStructure;  
USART_InitTypeDef  USART_InitStructure;  
NVIC_InitTypeDef  NVIC_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);  
    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);//关闭蜂鸣器  
}  
void GPIO_INIT()  
{  
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);//使能PC时钟  
  
    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;//PC0-PC7  
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;  
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//推挽输出   
    GPIO_Init(GPIOC, &GPIO_InitStructure);//初始化PC  
}  
  
void USART_int(long BaudRate)  
{  
     RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);//使能PA USART1  
   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;//TX位于PA9   
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;  
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //推挽输出  
   GPIO_Init(GPIOA, &GPIO_InitStructure);//TX初始化 PA9   
   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;//RX位于PA10   
   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//悬空输入  
   GPIO_Init(GPIOA, &GPIO_InitStructure);//RX初始化 PA10   
  /* 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;//传输速率  
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长8比特  
    USART_InitStructure.USART_StopBits = USART_StopBits_1;//停止位1   
    USART_InitStructure.USART_Parity = USART_Parity_No;//  
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//流控位none  
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//接收和发送模式  
    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);//初始化USART1时钟  
    USART_Init(USART1, &USART_InitStructure);//初始化USART1   
    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);//优先级  
  /* Enable the USART1 Interrupt */  
    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; //选择USART1中断通道  
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 15;  
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  
    NVIC_Init(&NVIC_InitStructure);//初始化中断  
}  
  
/*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 USART_SendStr(char *str)//发送字符串  
{  
   while((*str)!='\0')//到字符串的末尾才停止发送数据  
    {     
        USART_SendData(USART1,*str++);  
        while(USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);  
    }  
}  
  
unsigned int translate(char *S,char j)//将字符串组成的数字转换成整型数据  
{  
    unsigned int a[4],sum=0;  
    char i;  
    for(i=0;i<j;i++)  
    {  
        a[i]=S[5+j-1-i]-48;//将字符转成整型数据  
        sum+=a[i]*pow(10,i);//按照每一位的权值相乘再相加,还原data=n的本来面貌  
    }  
    return sum;//sum保存目标整型数据  
}   
  
void func(char *S,char LEN)  
{   
    char count;//  
    unsigned int sum,i,j;  
    if((LEN!=6)&(LEN!=7)&(LEN!=8)&(LEN!=9))//data=1~999  
    {USART_SendStr("\r\n Erro input!!!\r\n");}//如果输入格式错误,发送提示  
    else   
    {  
        count=LEN-5;//从“=”后面开始是目标数据  
        sum = translate(S,count);//count记录“=”后有多少位,传递到translate中  
        GPIO_SetBits(GPIOC,0x000000ff);//all LED off   
        GPIO_SetBits(GPIOA,GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3);//RGB熄灭    
    
      
        {    
          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);//LED全部熄灭    
            delay_ms(sum);    
                
            GPIO_ResetBits(GPIOC,GPIO_Pin_3);//点亮D4         
            delay_ms(sum);              
            GPIO_SetBits(GPIOC,GPIO_Pin_3);//熄灭D4    
    
            GPIO_ResetBits(GPIOC,GPIO_Pin_2);//点亮D3    
                          delay_ms(sum);        
            GPIO_SetBits(GPIOC,GPIO_Pin_2);//熄灭D3    
            
            GPIO_ResetBits(GPIOC,GPIO_Pin_1);//点亮D2    
            delay_ms(sum);    
            GPIO_SetBits(GPIOC,GPIO_Pin_1);//熄灭D2    
                
            GPIO_ResetBits(GPIOC,GPIO_Pin_0);//点亮D1    
            delay_ms(sum);    
            GPIO_SetBits(GPIOC,GPIO_Pin_0);//熄灭D1    
                      
                     GPIO_ResetBits(GPIOC,GPIO_Pin_4);//点亮D5    
            delay_ms(sum);    
            GPIO_SetBits(GPIOC,GPIO_Pin_4);//熄灭D5    
                
                            GPIO_ResetBits(GPIOC,GPIO_Pin_5);//点亮D6    
            delay_ms(sum);    
            GPIO_SetBits(GPIOC,GPIO_Pin_5);//熄灭D6  
                          
                              GPIO_ResetBits(GPIOC,GPIO_Pin_6);//点亮D7    
            delay_ms(sum);    
            GPIO_SetBits(GPIOC,GPIO_Pin_6);//熄灭D7    
                          
            GPIO_ResetBits(GPIOC,GPIO_Pin_7);//点亮D8    
            delay_ms(sum);    
            GPIO_SetBits(GPIOC,GPIO_Pin_7);//熄灭D8    
                 } 
	}
 }							 
   
       void input_ASK() 
{  
    char j;  
    func(rx_buff,rx_buff_count);  
    rx_buff_count=0;  
    for (j=0;j<rx_buff_count;j++)  
    {rx_buff[j]='\0';}//判断读入信息是否结束,如果结束则准备下一次读入  
    USART_SendStr("\n>");  
}  
  
int main(void)  
{   
    RCC_Configuration();  
    GPIO_INIT();  
    USART_int(9600);  
    GPIO_ResetBits(GPIOC,0x000000ff);//led全亮,提示程序开始  
    delay_ms(200);  
    GPIO_SetBits(GPIOC,0x000000ff);//led全灭  
    USART_SendStr("SyStem booting......\r\n");//   
    USART_SendStr("\n>");//   
    while(1)  
        {}  
}  
  
void USART1_IRQHandler(void)   
{   
  while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET)  
  {  }   
    if(USART_ReceiveData(USART1)==0x0d)//如果输入完毕,按下了回车  
    {input_ASK();}  
    else  
    {  
        USART_SendData(USART1,USART_ReceiveData(USART1));  
        rx_buff[rx_buff_count]= USART_ReceiveData(USART1);  
        rx_buff_count++;  
    }  
    USART_ClearFlag(USART1, USART_FLAG_RXNE);  
} 

 







菜鸟
2014-11-07 21:41:17     打赏
12楼

串口发送信息控制LED闪烁速度视频更新啦。

本来是超清的视频。上传到优酷被转码后就变的不清晰了。变成标清了!!



视频地址:http://player.youku.com/player.php/sid/XODIxNzEwMDMy/v.swf

菜鸟
2014-11-07 23:33:47     打赏
13楼

晒一张


菜鸟
2014-11-12 13:32:53     打赏
14楼
恩,一直在努力学习中

菜鸟
2014-11-12 13:33:33     打赏
15楼
恩,一直在努力学习中

菜鸟
2014-11-27 22:53:32     打赏
16楼

外部中断作业代码

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32_eval.h"
#include <stdio.h>
/** @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;
/* 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;
  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);
 
  /* 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
}
/**
  * @brief  This function handles External lines 9 to 5 interrupt request.
  * @param  None
  * @retval None
  */
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_0|GPIO_Pin_1|GPIO_Pin_2|GPIO_Pin_3);
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_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7);
printf("S4 interrupt ......\r\n");
    /* Clear the  EXTI line 0 pending bit */
    EXTI_ClearITPendingBit(EXTI_Line11);
  }
}
#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

 



菜鸟
2014-11-28 00:19:59     打赏
17楼

菜鸟
2014-11-28 00:22:07     打赏
18楼

定时器中断作业代码

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32_eval.h"
#include <stdio.h>
/** @addtogroup STM32F10x_StdPeriph_Examples
  * @{
  */

/** @addtogroup EXTI_Config
  * @{
  */ 

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
EXTI_InitTypeDef   EXTI_InitStructure;
GPIO_InitTypeDef   GPIO_InitStructure;
NVIC_InitTypeDef   NVIC_InitStructure;
USART_InitTypeDef USART_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;
long flag;
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|RCC_APB1Periph_TIM7, ENABLE);//TIM2  TIM3
	
	
	
}

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);
  /* 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);//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 TIM7 global Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = TIM7_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_APB1Periph_TIM7, ENABLE);//使能TIM7外设
	TIM_DeInit(TIM7);//复位时钟TIM8,恢复初始状态
	 /* Time base configuration */
  TIM_TimeBaseStructure.TIM_Period = 5000;//周期
  TIM_TimeBaseStructure.TIM_Prescaler = 7100;//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(TIM7, &TIM_TimeBaseStructure);//初始化TIM2	
	TIM_ClearFlag(TIM7,TIM_FLAG_Update);//清楚标志
  TIM_ITConfig(TIM7,TIM_IT_Update,ENABLE ); //使能TIM8的更新中断
  /* TIM2 enable counter */
  TIM_Cmd(TIM7, 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 TIM7_IRQHandler(void) //TIM2中断
{
if (TIM_GetITStatus(TIM7, TIM_IT_Update) != RESET) //检查TIM2更新中断发生与否
{
TIM_ClearITPendingBit(TIM7, TIM_IT_Update ); //清除TIM2更新中断标志
	GPIO_SetBits(GPIOC,GPIO_Pin_3);
}
}
/* 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);
	NVIC_Configuration();
	printf(" config done...\r\n");
  Timer_Config();
 TIM2_IRQHandler();
 TIM3_IRQHandler();
 TIM7_IRQHandler();
 
  while (1){		
GPIO_ResetBits(GPIOC,GPIO_Pin_1);
		delay_ms(400);
GPIO_ResetBits(GPIOC,GPIO_Pin_2);
		delay_ms(600);
GPIO_ResetBits(GPIOC,GPIO_Pin_3);
		delay_ms(400);
}
}

#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

 



菜鸟
2014-11-28 00:22:47     打赏
19楼

菜鸟
2014-11-28 00:24:45     打赏
20楼
恩,

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