stm32f103zet6高级,通用,基本定时器功能汇总：1普通定时，2输入捕获，3输出比较，4PWM，5单脉冲模式输出，6标...-第5页回答

程功之道

1楼-- · 2019-07-25 00:36

564646396 发表于 2017-6-26 10:44
程序上传不了说太大什么鬼

这个对应端口，为啥还要右移才提示有这个信号，不然都添加不了这个端口

邦尼power

2楼-- · 2019-07-25 01:52

本帖最后由邦尼power 于 2018-5-8 10:36 编辑

STM32F103C8t6的板子

  TIM1_Cap_Init(0xffff,72-1);  //òÔ1MhzμÄÆμÂê¼Æêy

void TIM1_Cap_Init(u16 arr,u16 psc)
{
  GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  NVIC_InitTypeDef NVIC_InitStructure;
TIM_ICInitTypeDef  TIM1_ICInitStructure;//

RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);    //ê1ÄüTIM1ê±Öó
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);  //ê1ÄüGPIOBê±Öó
// RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE); //

GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_10; //PA10 Çå3yÖ®Ç°éèÖÃ
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD ; //PA10 êäèë
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_ResetBits(GPIOA,GPIO_Pin_10);    //PA10 ÏÂà-

//3õê¼»ˉ¶¨ê±Æ÷1 TIM1
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);//éèÖÃè±ê¡Öμ,Õaò»2½×îoÃ¼óéÏ
TIM_TimeBaseStructure.TIM_Period = arr;    //éè¶¨¼ÆêyÆ÷×Ô¶ˉÖØ×°Öμ
TIM_TimeBaseStructure.TIM_Prescaler =psc; //Ô¤·ÖÆμÆ÷
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //éèÖÃê±Öó·Ö¸î:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIMÏòéÏ¼ÆêyÄ￡ê½
TIM_TimeBaseStructure.TIM_RepetitionCounter=0;//éèÖÃÖØ¸′òç3ö′Îêy￡¬¾íêÇ¶àéù′Îòç3öoó½øèëÖD¶Ï￡¬ò»°ãÎa0￡¬Ö»óD¸ß¼¶¶¨ê±Æ÷2ÅóDóÃ
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); //¸ù¾YTIM_TimeBaseInitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉTIMxμÄê±¼ä»ùêyμ￥Î»

//3õê¼»ˉTIM1êäèë2¶»ñ2Îêy
TIM_ICStructInit(&TIM1_ICInitStructure);//éèÖÃè±ê¡Öμ,Õaò»2½×îoÃ¼óéÏ
TIM1_ICInitStructure.TIM_Channel = TIM_Channel_3; //CC2S=01 Ñ¡Ôñêäèë¶Ë IC1ó3éäμ½TI1éÏ //TIM1_CH2 pB14
  TIM1_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //éÏéyÑØ2¶»ñ
  TIM1_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //ó3éäμ½TI2éÏ
  TIM1_ICInitStructure.TIM_ICPrescaler =  TIM_ICPSC_DIV8  ;       //ÅäÖÃêäèë·ÖÆμ,2»·ÖÆμ
  TIM1_ICInitStructure.TIM_ICFilter = 0x00; //IC1F=0000 ÅäÖÃêäèëÂË2¨Æ÷ 2»ÂË2¨
  TIM_ICInit(TIM1, &TIM1_ICInitStructure);

//ÖD¶Ï·Ö×é3õê¼»ˉ
NVIC_InitStructure.NVIC_IRQChannel =  TIM1_CC_IRQn;  //TIM1ÖD¶Ï
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =2;  //ÏèÕ¼óÅÏè¼¶2¼¶
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //′óóÅÏè¼¶0¼¶
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;  //IRQí¨μà±»ê1Äü
NVIC_Init(&NVIC_InitStructure);  //¸ù¾YNVIC_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèNVIC¼Ä′æÆ÷

TIM_ITConfig(TIM1,TIM_IT_Update|TIM_IT_CC3,ENABLE);//ÔêDí¸üDÂÖD¶Ï ,ÔêDíCC1IE2¶»ñÖD¶Ï
// TIM_CtrlPWMOutputs(TIM1,ENABLE); //Ö÷êä3öê1Äü
  TIM_Cmd(TIM1,ENABLE ); //ê1Äü¶¨ê±Æ÷1
}

u8  TIM1CH3_CAPTURE_STA=0; //êäèë2¶»ñ×′ì¬
u16 TIM1CH3_CAPTURE_VAL; //êäèë2¶»ñÖμ
long long temp=0;
u32 freq_gate=10000;
u8 FLAG = 0;

void TIM1_CC_IRQHandler(void)
{

if((TIM1CH3_CAPTURE_STA&0X80)==0)//»1Î′3é1|2¶»ñ
{
if (TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET)
{
if(TIM1CH3_CAPTURE_STA&0X40)//òÑ¾-2¶»ñμ½¸ßμçÆ½áË
{
if((TIM1CH3_CAPTURE_STA&0X3F)==0X3f)//¸ßμçÆ½ì«3¤áË
{
TIM1CH3_CAPTURE_STA=0X80;//±ê¼Ç3é1|2¶»ñáËò»′Î
TIM1CH3_CAPTURE_VAL=0;
}
else TIM1CH3_CAPTURE_STA++;
}
}
   if (TIM_GetITStatus(TIM1, TIM_IT_CC3) != RESET)//2¶»ñ1·￠éú2¶»ñêÂ¼t
{
if(TIM1CH3_CAPTURE_STA&0X40) //2¶μú¶t′Î»ñμ½éÏéyÑØ
{

TIM1CH3_CAPTURE_STA|=0X80; //±ê¼Ç3é1|2¶»ñμ½ò»′Î¸ßμçÆ½Âö¿í
      TIM1CH3_CAPTURE_VAL=TIM_GetCapture3(TIM1);//»ñè¡μ±Ç°μÄ2¶»ñÖμ.

   temp=TIM1CH3_CAPTURE_STA&0X3F;
   temp=temp*0XFFFF;
   temp=temp+TIM1CH3_CAPTURE_VAL;
if(temp<freq_gate)
      FLAG=0;
else
      FLAG=1;
}
else    //μúò»′Î2¶»ñéÏéyÑØ
{
// ReadValue1=TIM_GetCapture1(TIM1);
TIM1CH3_CAPTURE_STA=0; //Çå¿Õ
TIM1CH3_CAPTURE_VAL=0;
TIM1CH3_CAPTURE_STA |= 0X40; //±ê¼Ç2¶»ñμ½áËéÏéyÑØ
TIM_Cmd(TIM1,DISABLE );    //1Ø±Õ¶¨ê±Æ÷2
        TIM_SetCounter(TIM1,0);
     //TIM_OC1PolarityConfig(TIM5,TIM_ICPolarity_Falling); //CC1P=1 éèÖÃÎaÏÂ½μÑØ2¶»ñ
   TIM_Cmd(TIM1,ENABLE ); //ê1Äü¶¨ê±Æ÷2
}
}
}
   TIM_ClearITPendingBit(TIM1, TIM_IT_CC3|TIM_IT_Update); //Çå3yÖD¶Ï±êÖ¾Î»
}

大神可以帮我看一下吗，以1MHZ计数，频率算出来的跟我输入的不一样，我调试了很多次，结果变来变去，不稳定，可以帮我看那一下吗，谢谢！