tim2_ar.c

8051试验程序 基础教材

//====================================================================
//
// Author        : ADI - Apps
//
// Date          : 17 October 2003
//
// File          : Tim2_AR.c
//
// Hardware      : ADuC845, ADuC847, ADuC848
//
// Description   : Flashes LED on P3.4 every approx 20Hz
//____________________________________________________________________

#include <stdio.h>
#include <ioADuC845.h> //Use <ADuC847.h> or <ADuC848.h> if using an ADuC847 or ADuC848 part.


#define LED P3_bit.T0

#pragma vector=0x2B
__interrupt void interrupt_0 ()
{
   LED ^= 1;
   T2CON_bit.TF2 = 0;
}


void main (void)
{
   IE_bit.ET2 = 1;
   TL2 = 0x0;
   TH2 = 0x67;
   RACAP2L = 0x0;
   RACAP2H = 0x67;

   IE_bit.EA = 1;
   T2CON = 0x04;

   while(1);
}