#include "stm32f10x.h"
char i=0;
void TIM1_UP_IRQHandler (void) {
if ((TIM1->SR & 0x0001) != 0) { // check interrupt source
i=~i;
TIM1->SR &= ~(1<<0); // clear UIF flag
GPIOB->ODR=i;
}
}
int main(void) {
RCC->APB2ENR=RCC_APB2ENR_IOPBEN | RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPCEN | RCC_APB2ENR_TIM1EN ; // GPIOA,b,c Enable Clock
TIM1->EGR=TIM_EGR_UG;
TIM1->CR2=0X100;
TIM1->PSC=1;
TIM1->ARR=0x100;
TIM1->RCR=5;
TIM1->CR1= TIM_CR1_CEN | TIM_CR1_ARPE ;//TIM_CR1_CEN
TIM1->DIER= TIM_DIER_UIE ;//enable interrupt
//--------------------------------------------------------------------------------------------------------------------
GPIOB->CRL=1;
GPIOB->ODR=0; ////////////////--------=============================
NVIC_EnableIRQ(TIM1_UP_IRQn);//EXTI15_10_IRQn
while(1){
//while (!(TIM1->SR & TIM_SR_UIF));
// TIM1->SR = 0;//TIM_SR_UIF;
//GPIOB->ODR=1;
// while (!(TIM1->SR & TIM_SR_UIF));
//TIM1->SR = 0;//TIM_SR_UIF;
// GPIOB->ODR=0;
}
}
دیدگاه