I try to generete interrupt when TIM->CNT = OverVal
my code below ;
I am so confused, thanks for now
void Init(){
TIM_ICInitStructure.TIM_Channel = TIM_Channel_1; //TIM_Channel_3
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Falling;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0x0;
TIM_ICInit(ExternalOSCTimer, &TIM_ICInitStructure);
NVIC_InitStructure.NVIC_IRQChannel = TIM1_BRK_UP_TRG_COM_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
TIM1->CCER |= TIM_CCER_CC1E;
NVIC_EnableIRQ(TIM1_CC_IRQn);
TIM1->CCMR1 = TIM1_CH1_OUTPUT_MODE_TOGGLE ;
TIM1->CCER &=~ TIM_CCER_CC1E;
TIM1->CCMR1 &=~ (1 << 3);//preload disable
TIM1->CR2 &= (uint16_t)(~(TIM_CR1_DIR | TIM_CR1_CMS | TIM_CR1_CKD));
TIM1->CR2 &= 0XFF7F;
TIM1->ARR = 0xFFFFFFFF;
TIM1->PSC = 0x0000; //set prescale value
TIM1->SMCR |= (uint16_t)(TIM_TS_TI1FP1 | TIM_SMCR_SMS); }
void TIM1_BRK_UP_TRG_COM_IRQHandler(){ /*OverFlow interrupt **/
if(TIM_GetITStatus(TIM1,TIM_IT_Update) != RESET){
TIM_ClearITPendingBit(ExternalOSCTimer,TIM_IT_Update) ;
if(PingCounter ==loopCount){
TIM1->CCR1 = OverFlow ;
TIM1->DIER |= TIM_DIER_CC1IE;
}
}
void TIM1_CC_IRQHandler(){
if(TIM1->SR & TIM_SR_CC1IF){
TIM1->SR = (uint16_t)~TIM_SR_CC1IF;
TIM1->DIER &= (uint16_t)~TIM_DIER_CC1IE;
//do something
}
}
