定时器输入捕获

蜀酋

void TIM3_PWMInit_Configuration(void)
{ 
    TIM3_ICInitTypeDef TIM3_ICInitStructure;       // error: #20: identifier "TIM3_ICInitTypeDef" is undefined
    TIM3_ICInitStructure.TIM3_Channel = TIM3_Channel_2;   
    TIM3_ICInitStructure.TIM3_ICPolarity = TIM3_ICPolarity_Falling;              // error:  #20: identifier "TIM3_ICPolarity_Falling" is undefined
    TIM3_ICInitStructure.TIM3_ICSelection = TIM3_ICSelection_DirectTI;      //error: #20: identifier "TIM3_ICSelection_DirectTI" is undefined
    TIM3_ICInitStructure.TIM3_ICPrescaler = TIM3_ICPSC_DIV2;  
    TIM3_ICInitStructure.TIM3_ICFilter = 0x0;
    TIM3_PWMIConfig(&TIM3_ICInitStructure);
 TIM_SelectInputTrigger(TIM3, TIM_TS_TI2FP2);                //选择IC2为始终触发源
 TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Reset);//TIM从模式：触发信号的上升沿重新初始化计数器和触发寄存器的更新事件
    TIM_SelectMasterSlaveMode(TIM3, TIM_MasterSlaveMode_Enable); //启动定时器的被动触发
}
是不是我少加了哪个库函数

正点原子

stm32f10x.h

蜀酋

TIM通道配置错误
我改了下又出现新问题了

void TIM3_load_Configuration(void)
{ 
    TIM_ICInitTypeDef TIM_ICInitStructure;
    TIM_DeInit(TIM3);
    TIM_ICStructInit(&TIM_ICInitStructure);
    TIM_ICInitStructure.TIM_ICMode = TIM_ICMode_ICAP;
//Time_test.c(57): error:  #136: struct "<unnamed>" has no field "TIM_ICMode"
    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 = 0x0;
    TIM_ICInit(TIM3, &TIM_ICInitStructure);
 TIM_SelectInputTrigger(TIM3, TIM_TS_TI2FP2);                //选择IC2为始终触发源
 TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Reset);//TIM从模式：触发信号的上升沿重新初始化计数器和触发寄存器的更新事件
    TIM_SelectMasterSlaveMode(TIM3, TIM_MasterSlaveMode_Enable); //启动定时器的被动触发
}

正点原子

库版本和头文件版本对不上吧.
你这个可以去看看我们战舰板库函数版本教程.

蜀酋

原子大神，
用stm32做频率计是不是用定时器输入捕获，求给定时器初始化设置的代码

正点原子

论坛搜:输入捕获.