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Delay.c文件：
#include "LPC11XX.h"
#include "gpio.h"
#include "timer16.h"
#include "Delay.h"
/*系統(tǒng)時(shí)鐘配置為12MHz，因此提供給定時(shí)器的時(shí)鐘為12Mhz，因此得出以下分頻值和匹配值*/
void Delay_Us(unsigned int DelayTimes) /* setup timer #1 for delay */
{
//LPC_SYSCON->SYSAHBCLKCTRL |= (1<<8); /* 開(kāi)啟定時(shí)器Timer16_1時(shí)鐘--時(shí)鐘配置中開(kāi)啟該時(shí)鐘 */
LPC_TMR16B1->TCR = 0x02; /* reset timer */
LPC_TMR16B1->PR = 12; /* set prescaler to zero 根據(jù)AHB時(shí)鐘確定分頻值 */
LPC_TMR16B1->MR0 = DelayTimes; /* 所需的延時(shí)時(shí)間 */
LPC_TMR16B1->IR = 0xff; /* reset all interrrupts 復(fù)位所有的中斷 */
LPC_TMR16B1->MCR = 0x04; /* stop timer on match --達(dá)到匹配停止 */
LPC_TMR16B1->TCR = 0x01; /* start timer 啟動(dòng)定時(shí)器 */
while (LPC_TMR16B1->TCR & 0x01); /* 等待直到時(shí)間到 */
LPC_TMR16B1->TCR = 0x00; /* Close timer --關(guān)閉定時(shí)器 */
}
void Delay_Ms(unsigned int DelayTimes) /* setup timer #1 for delay */
{
//LPC_SYSCON->SYSAHBCLKCTRL |= (1<<8); /* 開(kāi)啟定時(shí)器Timer16_1時(shí)鐘 */
LPC_TMR16B1->TCR = 0x02; /* reset timer */
LPC_TMR16B1->PR = 12000; /* 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); /* 等待直到時(shí)間到 */
LPC_TMR16B1->TCR = 0x00; /* Close timer */
}
void Delay_Sec(unsigned int DelayTimes) /* setup timer #1 for delay */
{
//LPC_SYSCON->SYSAHBCLKCTRL |= (1<<8); /* 開(kāi)啟定時(shí)器Timer16_1時(shí)鐘 */
LPC_TMR16B1->TCR = 0x02; /* reset timer */
LPC_TMR16B1->PR = 60000; /* set prescaler to zero */
LPC_TMR16B1->MR0 = 200*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); /* 等待直到時(shí)間到 */
LPC_TMR16B1->TCR = 0x00; /* Close timer */
}
Delay.h文件：
#ifndef __DELAY_H__
#define __DELAY_H__
void Delay_Us(unsigned int DelayTimes); /*微秒延時(shí)函數(shù)*/
void Delay_Ms(unsigned int DelayTimes); /*毫秒延時(shí)函數(shù)*/
void Delay_Sec(unsigned int DelayTimes); /*秒延時(shí)函數(shù)*/
#endif
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