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

FILE NAME      : EXTWAKE.C

DEscrīptION  : 连接P0.16引脚到外部中断0，设置EXTWAKE允许外部中断0唤醒CPU,然后进入掉电模式。被外部掉电唤醒后，将蜂鸣器控制口状态取反，然后继续进入掉电状态，直到再次被唤醒。

VERSION     : 0.0.0

AUTHOR           : MARUI

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

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

#include  <lpc2103.h>

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

 

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

 

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

 

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

 

#define                          BEEP                  1<<7

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

NAME                         : main()

FUNCTION               :演示外部中断唤醒掉电的CPU，但不产生中断

ENTRY  TYPE          : void

RETURN TYPE          :void

PURPOSE                    :

VERSION                    : 0.0.0

DEscrīptION  :

CREATE DATE : 12.07.2006

LOGS                           :--\

- 1.create;

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

int main()

{PINSEL0=0x00000000;

 PINSEL1=0x00000000;

 IODIR=BEEP;

 EXTWAKE=0x01;

 EXTINT=0x01;

 

 while(1)

 { PCONP=0x00;

   PCON=0x02;

  

   if((IOSET&BEEP)==0) IOSET=BEEP;

   else IOCLR=BEEP;

   EXTINT=0x01;

 }

return(0);

}

 

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