用TIM3 接霍尔传感器遇到问题，STM32-TIM3-HALL PROBLEM!

heheqian 提问时间：2014-11-27 00:12 /

问答
是否解决:

   用TIM3 接霍尔传感器；3根霍尔信号异或，霍尔信号跳变，将触发TIM_IT_Trigger 中断；但是实际过程中，不管我怎么转动无刷电机，霍尔信号一直在变化，但是 void TIM3_IRQHandler(void) 中断里，就是没有  TIF 中断标记即 if(TIM3->SR&0x0040)无法调用；（TIM3中断其他类型的中断是有的，譬如TIM3->SR&0x0010）怎么办啊？，
void TIM3_Configuration(void)
{
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;

TIM_DeInit(TIM3);

TIM_TimeBaseStructure.TIM_Prescaler = 71;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period =65535;
TIM_TimeBaseStructure.TIM_ClockDivision = 0;
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;

TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStructure);

TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_TRC ;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 10;

TIM_ICInit(TIM3, &TIM_ICInitStructure);

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OCInitStructure.TIM_Pulse =1023;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

TIM_OC2Init(TIM3,&TIM_OCInitStructure);

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Disable;
TIM_OCInitStructure.TIM_Pulse =65535;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

TIM_OC4Init(TIM3,&TIM_OCInitStructure);

TIM_SelectHallSensor(TIM3,ENABLE);

TIM_SelectInputTrigger(TIM3, TIM_TS_TI1F_ED);

TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Reset);

TIM_SelectMasterSlaveMode(TIM3, TIM_MasterSlaveMode_Enable);

TIM_SelectOutputTrigger(TIM3, TIM_TRGOSource_OC2Ref );

TIM_ITConfig(TIM3, TIM_IT_Trigger|TIM_IT_CC4, ENABLE);

//TIM_Cmd(TIM3,ENABLE);
}