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#include "LPC11XX.h"
#include "gpio.h"
#include "timer16.h"
/*系統(tǒng)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); /*開啟定時(shí)器Timer16_1時(shí)鐘--時(shí)鐘配置中開啟該時(shí)鐘*/
LPC_TMR16B1->TCR = 0x02; /* reset timer */
LPC_TMR16B1->PR = 48; /* 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 */
}
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