NXP_LPC1114延時(shí)函數集合

#include "LPC11XX.h"

#include "gpio.h"

#include "timer16.h"

/*系統時(shí)鐘配置為48MHz，AHB不分頻，一次定時(shí)器時(shí)鐘為48Mhz，因此得出以下分頻值，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 = 48; /* set prescaler to zero 根據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(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 = 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); /*等待直到時(shí)間到*/

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

}

void Delay_Sec(unsigned char 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 = 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); /*等待直到時(shí)間到*/

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

}