NXP_LPC1114延时函数集合

#include "gpio.h"

#include "timer16.h"

/*系统时钟配置为48MHz，AHB不分频，一次定时器时钟为48Mhz，因此得出以下分频值，匹配值*/

void Delay_Us(unsigned int DelayTimes)

{

/* * setup timer #1 for delay */

//LPC_SYSCON->SYSAHBCLKCTRL |= (1<<8); /*开启定时器Timer16_1时钟--时钟配置中开启该时钟*/

LPC_TMR16B1->TCR = 0x02; /* reset timer */

LPC_TMR16B1->PR = 48; /* set prescaler to zero 根据AHB时钟确定分频值*/

LPC_TMR16B1->MR0 = DelayTimes; /* 所需的延时时间 */

LPC_TMR16B1->IR = 0xff; /* reset all interrrupts 复位所有的中断*/

LPC_TMR16B1->MCR = 0x04; /* stop timer on match --达到匹配停止*/

LPC_TMR16B1->TCR = 0x01; /* start timer 启动定时器*/

while (LPC_TMR16B1->TCR & 0x01); /*等待直到时间到*/

LPC_TMR16B1->TCR = 0x00; /* Close timer --关闭定时器*/

}

void Delay_Ms(unsigned int DelayTimes)

{

/* * setup timer #1 for delay */

//LPC_SYSCON->SYSAHBCLKCTRL |= (1<<8); //开启定时器Timer16_1时钟

LPC_TMR16B1->TCR = 0x02; /* reset timer */

LPC_TMR16B1->PR = 48000; /* set prescaler to zero */

LPC_TMR16B1->MR0 = DelayTimes;

LPC_TMR16B1->IR = 0xff; /* reset all interrrupts */

LPC_TMR16B1->MCR = 0x04; /* stop timer on match */

LPC_TMR16B1->TCR = 0x01; /* start timer */

while (LPC_TMR16B1->TCR & 0x01); /*等待直到时间到*/

LPC_TMR16B1->TCR = 0x00; /* Close timer */

}

void Delay_Sec(unsigned char DelayTimes)

{

/* * setup timer #1 for delay */

//LPC_SYSCON->SYSAHBCLKCTRL |= (1<<8); //开启定时器Timer16_1时钟

LPC_TMR16B1->TCR = 0x02; /* reset timer */

LPC_TMR16B1->PR = 48000000; /* set prescaler to zero */

LPC_TMR16B1->MR0 = DelayTimes;

LPC_TMR16B1->IR = 0xff; /* reset all interrrupts */

LPC_TMR16B1->MCR = 0x04; /* stop timer on match */

LPC_TMR16B1->TCR = 0x01; /* start timer */

while (LPC_TMR16B1->TCR & 0x01); /*等待直到时间到*/

LPC_TMR16B1->TCR = 0x00; /* Close timer */

}