各位大佬,我在编写TIM6基础时钟代码的时候,发现进不去中断,我仔细核对了代码没有发现问题,麻烦各位指导下,以下是具体代码#include<stm32f10x.h>
#define TIM6_IRQn 54
static unsigned int time;
void delay(uint16_t n)
{
int i,j;
for(i=0;i<n;i++)
for(j=0;j<8500;j++);
}
void tim_init()
{
TIM_TimeBaseInitTypeDef tim;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6,ENABLE);
tim.TIM_Period = 1000-1;
tim.TIM_Prescaler = 71;
tim.TIM_ClockDivision = TIM_CKD_DIV1;
tim.TIM_CounterMode = TIM_CounterMode_Up;
tim.TIM_RepetitionCounter = 0;
TIM_TimeBaseInit(TIM6,&tim);
TIM_ClearFlag(TIM6,TIM_FLAG_Update);
TIM_ITConfig(TIM6,TIM_IT_Update,ENABLE);
TIM_Cmd(TIM6,ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6,DISABLE);
}
void nvic_init()
{
NVIC_InitTypeDef nvic;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
nvic.NVIC_IRQChannel =TIM6_IRQn;
nvic.NVIC_IRQChannelPreemptionPriority = 0;
nvic.NVIC_IRQChannelSubPriority = 3;
nvic.NVIC_IRQChannelCmd= ENABLE;
NVIC_Init(&nvic);
}
void led_init()
{
GPIO_InitTypeDef led_gpio;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC| RCC_APB2Periph_AFIO,ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable,ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
led_gpio.GPIO_Pin = GPIO_Pin_13;
led_gpio.GPIO_Mode = GPIO_Mode_Out_PP;
led_gpio.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC,&led_gpio);
}
int main()
{
led_init();
tim_init();
nvic_init();
GPIOC->BSRR = GPIO_Pin_13;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6,ENABLE);
//delay(1000);
while(1){}
}
void TIM6_IRQHandler()
{
if(TIM_GetITStatus(TIM6,TIM_IT_Update) != RESET){
time++;
if(time >=1000)
{
time = 0;
/*GPIOC->IDR = ~GPIOC->IDR & GPIO_Pin_13;
if(GPIOC->ODR & GPIO_Pin_13)
{
GPIOC->BRR = GPIO_Pin_13;
}else
{GPIOC->BSRR = GPIO_Pin_13;}
*/
GPIOC->BRR = GPIO_Pin_13;
}
TIM_ClearITPendingBit(TIM6,TIM_FLAG_Update);
}
}
|