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Delay.c文件：
#include "LPC11XX.h"
#include "gpio.h"
#include "timer16.h"
#include "Delay.h"
/*系統時鐘配置為12MHz，因此提供給定時器的時鐘為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); /* 開啟定時器Timer16_1時鐘--時鐘配置中開啟該時鐘 */
LPC_TMR16B1->TCR = 0x02; /* reset timer */
LPC_TMR16B1->PR = 12; /* set prescaler to zero 根據AHB時鐘確定分頻值 */
LPC_TMR16B1->MR0 = DelayTimes; /* 所需的延時時間 */
LPC_TMR16B1->IR = 0xff; /* reset all interrrupts 復位所有的中斷 */
LPC_TMR16B1->MCR = 0x04; /* stop timer on match --達到匹配停止 */
LPC_TMR16B1->TCR = 0x01; /* start timer 啟動定時器 */
while (LPC_TMR16B1->TCR & 0x01); /* 等待直到時間到 */
LPC_TMR16B1->TCR = 0x00; /* Close timer --關閉定時器 */
}
void Delay_Ms(unsigned int DelayTimes) /* setup timer #1 for delay */
{
//LPC_SYSCON->SYSAHBCLKCTRL |= (1<<8); /* 開啟定時器Timer16_1時鐘 */
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); /* 開啟定時器Timer16_1時鐘 */
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); /*微秒延時函數*/
void Delay_Ms(unsigned int DelayTimes); /*毫秒延時函數*/
void Delay_Sec(unsigned int DelayTimes); /*秒延時函數*/
#endif
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