NXP_LPC1114延時(shí)函數(shù)集合

#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 */
}