LPC1768定时器普通定时

//其他通道的基本定时功能都能在这里实现

void Time0Mr0Init(u32 arr,u32 psc)

{

LPC_SC->PCONP |= (1<<1);                       //打开功率控制

LPC_TIM0->TCR |= (1<<1);                       //复位定时器

LPC_TIM0->MR0  = psc;                          //匹配寄存器与定时器计数器值相比较

LPC_TIM0->IR  |= 0XFF;                         //清所有中断标志位

LPC_TIM0->MCR |= ((1<<1)|(1<<0));              //MR0与TC值匹配时将产生中断,TC复位

LPC_TIM0->PC = 0X00;

LPC_TIM0->PR   = arr-1;                            //预分频

LPC_TIM0->TCR  = (1<<0);                       //启动定时器

NVIC_EnableIRQ(TIMER0_IRQn);                   /* enable irq in nvic              */

}

void TIMER0_IRQHandler(void)

{

if( LPC_TIM0->IR &0x01)

{

Time0Mr0CallBack;

}

LPC_TIM0->IR |= (1<<0);            //清中断标志

}