I have connected an external clock to TIM1 and I want to count the values where the counter register is overflow with interrupt. My code is like this, but it doesn't work.
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 = 0x0;
TIM_ICInit(TIM1, &TIM_ICInitStructure);
TIM_SelectInputTrigger(TIM1, TIM_TS_TI2FP2);
/* Select the slave Mode: Reset Mode */
TIM_SelectSlaveMode(TIM1, TIM_SlaveMode_External1);
/* Enable the Master/Slave Mode */
TIM_SelectMasterSlaveMode(TIM1 ,TIM_MasterSlaveMode_Enable);
/* Enable the CC2 Interrupt Request */
TIM_ITConfig(TIM1, TIM_IT_Trigger, ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = TIM1_BRK_UP_TRG_COM_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
uint32_t tut ;
void TIM1_BRK_UP_TRG_COM_IRQHandler(void){
if (TIM_GetITStatus(TIM1, TIM_IT_Trigger) != RESET){
if(TIM1->CNT == RESET)
tut++ ;
}
TIM_ClearITPendingBit(TIM1, TIM_IT_Trigger);
}
