f407输入捕获实验库函数版本

满满VS犬夜叉 · 发表于 2014-10-28 08:24:37

mini开发板附带的输入捕获实验稍作修改后在407上不能用，求帮助。

摩擦摩擦 · 发表于 2014-10-28 21:52:50

把程序发上来看看

正点原子 · 发表于 2014-10-28 23:09:19

帮顶。。。。

满满VS犬夜叉 · 发表于 2014-10-29 09:04:14

u8  TIM5CH1_CAPTURE_STA=0; //输入捕获状态
u16 TIM5CH1_CAPTURE_VAL; //输入捕获值
u16 tt=0,temp;
int  main(void) //主函数
{
   BSP_Init();
SCB->VTOR = FLASH_BASE | 0x20000; /* Vector Table Relocation in Internal FLASH. */
USART_OUT(USART1," ****** 输入捕获实验  *******\r\n");       //向串口1发送开机字符
USART_OUT(USART1, "********** 串口   ********\r\n");
    while(1)
{
if(TIM5CH1_CAPTURE_STA&0X80)//成功捕获到了一次上升沿
{
temp=TIM5CH1_CAPTURE_STA&0X3F;
temp*=65536;//溢出时间总和
temp+=TIM5CH1_CAPTURE_VAL;//得到总的高电平时间
printf("HIGH:%d us\r\n",temp);//打印总的高点平时间
printf("Count:%d times\r\n",tt);
TIM5CH1_CAPTURE_STA=0;//开启下一次捕获
}
delay(200);
}
   return  0;
}//主函数

void TIM5_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;
    TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
    TIM_ICInitTypeDef  TIM_ICInitStructure;
    /* TIM2 clock enable */
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);

    /* GPIOA clock enable */
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);


    GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_0;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
    GPIO_SetBits(GPIOA,GPIO_Pin_0); //PA0 ??
    /* Connect TIM pins to AF2 */
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource0, GPIO_AF_TIM5);

    //初始化定时器5
// TIM_DeInit(TIM5);
    TIM_TimeBaseStructure.TIM_Period = 0xffff; //设定计数器自动重装值
    TIM_TimeBaseStructure.TIM_Prescaler =83; //预分频器
    TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //设置时钟分割:TDTS = Tck_tim
    TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
    TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位
    TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
    TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Falling;
    TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
    TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
    TIM_ICInitStructure.TIM_ICFilter = 0x0;

    TIM_ICInit(TIM5, &TIM_ICInitStructure);


    /* Enable the TIM2 global Interrupt */
    NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);
     /* TIM enable counter */
    TIM_ITConfig(TIM5,TIM_IT_Update|TIM_IT_CC1,ENABLE);//允许更新中断 ,允许CC1IE捕获中断

    TIM_Cmd(TIM5,ENABLE ); //使能定时器5
}//配置

void TIM5_IRQHandler(void)
{
if((TIM5CH1_CAPTURE_STA&0X80)==0)//??????
{
if (TIM_GetITStatus(TIM5, TIM_IT_Update) != RESET)
{
if(TIM5CH1_CAPTURE_STA&0X40)//?????????
{
if((TIM5CH1_CAPTURE_STA&0X3F)==0X3F)//??????
{
TIM5CH1_CAPTURE_STA|=0X80;//?????????
TIM5CH1_CAPTURE_VAL=0XFFFF;
}
else TIM5CH1_CAPTURE_STA++;
}
}
if (TIM_GetITStatus(TIM5, TIM_IT_CC1) != RESET)//捕获1发生捕获事件
{
if(TIM5CH1_CAPTURE_STA&0X40) //捕获到一个下降沿
{
tt++;
TIM5CH1_CAPTURE_STA|=0X80; //标记成功捕获到一次上升沿
TIM5CH1_CAPTURE_VAL=TIM_GetCapture1(TIM5);
   TIM_OC1PolarityConfig(TIM5,TIM_ICPolarity_Falling); //CC1P=0 设置为上升沿捕获
}else   //还未开始,第一次捕获上升沿
{
TIM5CH1_CAPTURE_STA=0; //清空
TIM5CH1_CAPTURE_VAL=0;
TIM_SetCounter(TIM5,0);
TIM5CH1_CAPTURE_STA|=0X40; //标记捕获到了上升沿
  TIM_OC1PolarityConfig(TIM5,TIM_ICPolarity_Rising); //CC1P=1 设置为下降沿捕获
}
}
   }

     TIM_ClearITPendingBit(TIM5, TIM_IT_CC1|TIM_IT_Update); //清除中断标志位

}//中断服务函数
下载程序时执行到开机FLASH就停止了，但是如果把TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure); 屏蔽掉就可以把程序下载到板子里了。不知道哪里出了问题...