下�?�是我的代�?
void TimerInit()
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
TIM_DeInit(TIM3);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Prescaler = 47;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
TIM_TimeBaseStructure.TIM_Period = 999;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
TIM_ARRPreloadConfig(TIM3, ENABLE);
TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);
TIM_Cmd(TIM3,ENABLE);
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void TIM3_IRQHandler(void)
{
static uint8 Time2msCnt=0;
static uint8 Time5msCnt=0;
if(TIM_GetITStatus(TIM3,TIM_IT_Update)!=RESET)
{
TIM_ClearITPendingBit(TIM3,TIM_IT_Update);
Time2msCnt++;
Time5msCnt++;
Timer1msFlag=1;
if(Time2msCnt==2)
{
Time2msCnt=0;
Timer2msFlag=1;
}
if(Time5msCnt==5)
{
Time5msCnt=0;
Timer5msFlag=1;
}
}
}
while (1)
{
if(Timer1msFlag)
{
Timer1msFlag=0;
}
if(Timer2msFlag)
{
Timer2msFlag=0;
}
if(Timer5msFlag)
{
Timer5msFlag=0;
}
}
但是都�?准确
