Posted on May 17, 2011 at 14:01i got an example of timer for Timer1 that worked well both in polling and interrupt methods. but now i am trying to configure Timer in the same way as bellow, i am using Keil IDE interrupt is not comming can you tell me what is the problem in this code...
main()
{
RCC->APB1ENR=0x00000001; //Timer2 peripheral clock enable
TIM2->PSC=0x0001;
TIM2->ARR=0xffff; //Autoreload value
TIM2->CNT=0x0000;
TIM2->EGR=0x0000; //0x0001;
TIM2->CR1=0X0280; //0x0281;//Prescalar is 10 ie. tDTS=4*tCK_INT, autoreload enabled
TIM2->DIER = 0x0001; // enable interrupt
NVIC->ISER[0]|= (1 << (TIM2_IRQChannel & 0x1F));
//NVIC->ISER[0]=0x10000000;
TIM2->CR1|=0X0001;
while(1)
{;
}
}
void TIM2_IRQhandler(void)
{
if ((TIM2->SR & 0x0001) != 0)
{
i=~i;
GPIOA->ODR=i;
TIM2->SR=0x0000;
//TIM2->CR1|=0X0001;
}
}
