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STM32
求助stm32f407veTIM1输入捕获问题
2019-07-20 08:36
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站内问答
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STM32/STM8
8487
9
1716
更新中断正常,捕获中断进不去。输入电平为5Vttl
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9条回答
周浩然
2019-07-21 05:01
void TIM9_Cap_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM9,ENABLE); ///使能TIM1时钟
RCC_APB1PeriphClockCmd(RCC_AHB1Periph_GPIOE ,ENABLE); ///使能GPIOA时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_6;//GPA8,GPA9用于频率测量
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //速度100MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; //下拉
GPIO_Init(GPIOE,&GPIO_InitStructure); //初始化
/**TIM1 GPIO Configuration
PA8 ------> TIM1_CH1
PA9 ------> TIM1_CH2
PA10 ------> TIM1_CH3
PA11 ------> TIM1_CH4
*/
GPIO_PinAFConfig(GPIOE,GPIO_PinSource5,GPIO_AF_TIM9); //PA8 复用为TIM1
GPIO_PinAFConfig(GPIOE,GPIO_PinSource6,GPIO_AF_TIM9); //PA9 复用为TIM1
// GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_TIM1); //PA10 复用为TIM1
// GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_TIM1); //PA11 复用为TIM1
TIM_DeInit(TIM9);
TIM_TimeBaseInitStructure.TIM_Period = arr; //自动重装载值
TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //定时器分频
TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;//这个参数只对TIM1和TIM8有效,用于PWM波生成
TIM_TimeBaseInit(TIM9,&TIM_TimeBaseInitStructure);//初始化TIM1
//TIM_SelectOutputTrigger(TIM3, TIM_TRGOSource_Update);
//四个通道配置
TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0x04;//不滤波
TIM_ICInit(TIM9,&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0x04;//不滤波
TIM_ICInit(TIM9,&TIM_ICInitStructure);
// TIM_ICInitStructure.TIM_Channel = TIM_Channel_3;
// TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
// TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
// TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
// TIM_ICInitStructure.TIM_ICFilter = 0x00;//不滤波
// TIM_ICInit(TIM1,&TIM_ICInitStructure);
//
// TIM_ICInitStructure.TIM_Channel = TIM_Channel_4;
// TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
// TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
// TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
// TIM_ICInitStructure.TIM_ICFilter = 0x00;//不滤波
// TIM_ICInit(TIM1,&TIM_ICInitStructure);
//
TIM_ClearITPendingBit(TIM9,TIM_IT_Update|TIM_IT_CC1|TIM_IT_CC2);
TIM_ClearFlag(TIM9,TIM_FLAG_Update|TIM_FLAG_CC1|TIM_FLAG_CC2);
TIM_ITConfig(TIM9,TIM_IT_Update|TIM_IT_CC1|TIM_IT_CC2,ENABLE); //允许定时器1更新中断|TIM_IT_CC3|TIM_IT_CC4
TIM_Cmd(TIM9,ENABLE); //使能定时器1
// TIM_SelectInputTrigger(TIM1, TIM_TS_TI1FP1|TIM_TS_TI2FP2);
NVIC_InitStructure.NVIC_IRQChannel=TIM1_BRK_TIM9_IRQn ; //定时器1输入捕获中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x00; //抢占优先级1
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x05; //子优先级3
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void TIM1_BRK_TIM9_IRQHandler(void)
{
if(TIM_GetITStatus(TIM9,TIM_IT_Update)==SET)
{
SetTextValueInt32(2,3,sssssss++);
TIM_ClearITPendingBit(TIM9,TIM_IT_Update);
}
if(TIM_GetITStatus(TIM9,TIM_IT_CC1)==SET)
{
SetTextValueInt32(2,1,sss++);
TIM_ClearITPendingBit(TIM9,TIM_IT_CC1);
}
if(TIM_GetITStatus(TIM9,TIM_IT_CC2)==SET)
{
SetTextValueInt32(2,2,ssss++);
TIM_ClearITPendingBit(TIM9,TIM_IT_CC2);
}
}
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{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM9,ENABLE); ///使能TIM1时钟
RCC_APB1PeriphClockCmd(RCC_AHB1Periph_GPIOE ,ENABLE); ///使能GPIOA时钟
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_6;//GPA8,GPA9用于频率测量
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//复用功能
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //速度100MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //推挽复用输出
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; //下拉
GPIO_Init(GPIOE,&GPIO_InitStructure); //初始化
/**TIM1 GPIO Configuration
PA8 ------> TIM1_CH1
PA9 ------> TIM1_CH2
PA10 ------> TIM1_CH3
PA11 ------> TIM1_CH4
*/
GPIO_PinAFConfig(GPIOE,GPIO_PinSource5,GPIO_AF_TIM9); //PA8 复用为TIM1
GPIO_PinAFConfig(GPIOE,GPIO_PinSource6,GPIO_AF_TIM9); //PA9 复用为TIM1
// GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_TIM1); //PA10 复用为TIM1
// GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_TIM1); //PA11 复用为TIM1
TIM_DeInit(TIM9);
TIM_TimeBaseInitStructure.TIM_Period = arr; //自动重装载值
TIM_TimeBaseInitStructure.TIM_Prescaler=psc; //定时器分频
TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; //向上计数模式
TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1;
TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;//这个参数只对TIM1和TIM8有效,用于PWM波生成
TIM_TimeBaseInit(TIM9,&TIM_TimeBaseInitStructure);//初始化TIM1
//TIM_SelectOutputTrigger(TIM3, TIM_TRGOSource_Update);
//四个通道配置
TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0x04;//不滤波
TIM_ICInit(TIM9,&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0x04;//不滤波
TIM_ICInit(TIM9,&TIM_ICInitStructure);
// TIM_ICInitStructure.TIM_Channel = TIM_Channel_3;
// TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
// TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
// TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
// TIM_ICInitStructure.TIM_ICFilter = 0x00;//不滤波
// TIM_ICInit(TIM1,&TIM_ICInitStructure);
//
// TIM_ICInitStructure.TIM_Channel = TIM_Channel_4;
// TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
// TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
// TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
// TIM_ICInitStructure.TIM_ICFilter = 0x00;//不滤波
// TIM_ICInit(TIM1,&TIM_ICInitStructure);
//
TIM_ClearITPendingBit(TIM9,TIM_IT_Update|TIM_IT_CC1|TIM_IT_CC2);
TIM_ClearFlag(TIM9,TIM_FLAG_Update|TIM_FLAG_CC1|TIM_FLAG_CC2);
TIM_ITConfig(TIM9,TIM_IT_Update|TIM_IT_CC1|TIM_IT_CC2,ENABLE); //允许定时器1更新中断|TIM_IT_CC3|TIM_IT_CC4
TIM_Cmd(TIM9,ENABLE); //使能定时器1
// TIM_SelectInputTrigger(TIM1, TIM_TS_TI1FP1|TIM_TS_TI2FP2);
NVIC_InitStructure.NVIC_IRQChannel=TIM1_BRK_TIM9_IRQn ; //定时器1输入捕获中断
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x00; //抢占优先级1
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x05; //子优先级3
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void TIM1_BRK_TIM9_IRQHandler(void)
{
if(TIM_GetITStatus(TIM9,TIM_IT_Update)==SET)
{
SetTextValueInt32(2,3,sssssss++);
TIM_ClearITPendingBit(TIM9,TIM_IT_Update);
}
if(TIM_GetITStatus(TIM9,TIM_IT_CC1)==SET)
{
SetTextValueInt32(2,1,sss++);
TIM_ClearITPendingBit(TIM9,TIM_IT_CC1);
}
if(TIM_GetITStatus(TIM9,TIM_IT_CC2)==SET)
{
SetTextValueInt32(2,2,ssss++);
TIM_ClearITPendingBit(TIM9,TIM_IT_CC2);
}
}
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