/*-----------------------------------------------------------------------------------------------------------------------------

FILE NAME      : TIME1_CAP.C

DEscrīptION  : 使用定时器1的输入捕获功能，获取延时参数，用于控制LED的闪烁频率。 

------------------------------------------------------------------------------------------------------------------------------*/

//--------------------------------------------------------Include files------------------------------------------------------//

#include  <lpc2103.h>

//----------------------------------------------------------Variable --------------------------------------------------------//

 

//-----------------------------------------------------Function prototype------------------------------------------------//

 

//----------------------------------------------------------Function ------------------------------------------------------//

 

//-----------------------------------------------------------Define--------------------------------------------------------//

#define               LEDCON            (1<<13)

/*---------------------------------------------------------------------------------------------------------------------------

NAME                         : delay()

FUNCTION        : 短软件延时

ENTRY  TYPE : int

RETURN TYPE : void

PURPOSE                    :

VERSION                    : 0.0.0

DEscrīptION  :

CREATE DATE : 12.07.2006

LOGS                           :--\

- 1.create;

---------------------------------------------------------------------------------------------------------------------------*/

void delay(unsigned int dly )

{ unsigned int i;

  for (;dly>0;dly--)

     for (i=0;i<10;i++);

}

 

/*---------------------------------------------------------------------------------------------------------------------------

NAME                         : main()

FUNCTION        : 使用定时器1捕获按键定时，控制LED闪烁

ENTRY  TYPE : void

RETURN TYPE : int

PURPOSE                    :

VERSION                    : 0.0.0

DEscrīptION  :

CREATE DATE : 12.07.2006

LOGS                           :--\

- 1.create;

---------------------------------------------------------------------------------------------------------------------------*/

int main(void)

{

 volatile unsigned int i;

                                   

  PINSEL1=(1<<5);             //p0.18连接捕获1.3

  IODIR=LEDCON;                     //设置LED控制口为输出

 

  T1PR=999;

  T1CCR=1<<10;                         //设置CAP1.3下降沿捕获

  T1TC=0;

  T1TCR=0x01;                            //启动定时器

 

  while(1)

  { i=T1CR3;                       //读取T1TC值，用作延时参数

    IOCLR=LEDCON;

    delay(i);

    IOSET=LEDCON;

    delay(i);

  }

  return(0);

}

 

 

 

//----------------------------------------------------- End of file ---------------------------------------------------//