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標題: stm32定時一秒LED亮程序 [打印本頁]

作者: geige 時間: 2015-7-26 02:17
標題: stm32定時一秒LED亮程序
//定時一秒LED亮
#include "stm32f10x.h"

unsigned intTimingDelay;

void Delay(unsigned intx)
{

TimingDelay=x;
while(TimingDelay--);
}

voidTIM3_IRQHandler(void)
{
if(TIM_GetITStatus(TIM2,TIM_IT_Update) !=RESET)//檢查中斷溢出標志位
{
TIM_ClearITPendingBit(TIM2,TIM_IT_Update);//清中斷溢出標志位
GPIO_SetBits(GPIOC,GPIO_Pin_7);
}

}

int main(void)
{
SystemInit();

//配置IO口
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD| RCC_APB2Periph_GPIOE,ENABLE);//IO口使能設(shè)置
  GPIO_InitTypeDefGPIO_InitStructure; //定義結(jié)構(gòu)體
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOC,&GPIO_InitStructure);

//設(shè)置定時器2
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);//打開TIM2外設(shè)時鐘
TIM_TimeBaseStructure.TIM_Period = 10000;//1s
TIM_TimeBaseStructure.TIM_Prescaler = 7199;//7200分頻
TIM_TimeBaseStructure.TIM_ClockDivision = 0;//設(shè)置時鐘分割
TIM_TimeBaseStructure.TIM_CounterMode =TIM_CounterMode_Up;//設(shè)置計數(shù)方式為向上計數(shù)
TIM_TimeBaseInit(TIM2,&TIM_TimeBaseStructure);//初始化定時器2
TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE);//打開定時器2中斷
TIM_Cmd(TIM2,ENABLE);//使能定時器


//使能TIM2中斷
  NVIC_InitTypeDefNVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel =TIM2_IRQn;//選擇TIM2全局中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);


while(1);
}

//以下是報錯函數(shù)
#ifdef USE_FULL_ASSERT
void assert_failed(uint8_t* file,uint32_t line)
{
  while(1)
  {
  }
}
#endif

作者: 哈哈哈哈哈哈11 時間: 2015-8-2 11:25
是這樣子設(shè)置的，

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