#include <reg51.h>
void T1M2Delay(void);
sbit mybit=P2^7;
void main(void)
  {
    unsigned char x;
    while(1)
      {
        mybit=~mybit;		
          T1M2Delay();
      }
  }
void T1M2Delay(void)
  {
    TMOD=0x20;			
    TH1=-184;			
    TR1=1;				
    while(TF1==0);		
    TR1=0;				
    TF1=0;				
  }