#include<reg320>
#include<stdio.h>
unsigned char xdata out _at_ 0xE003;

int stato_pin;

void TIMER2 (void) interrupt 6
{
TF2=0; //clear flag
if(stato_pin==0){out=0x01; stato_pin=1;}
else {out=0x00; stato_pin=0;}

}
main()
{
RCAP2H =(65535-23040)>>8; //~25ms
RCAP2L =(65535-23040)&0xFF;
TH2 = RCAP2H;
TL2 = RCAP2L;
T2CON = 0x80;
ET2=1; //enable timer 2 interrupt
TR2=1; //timer 2 start
EA =1; //enable global interrupts
}
while(1)
{}
}

ok....is the code complete now?