x51..blikani LED

[lubos melichar]

muj prvni program s x51, pouze blikani jedne led..preruseni po 1s.

*void main( void )
{ EA  = 0;
  ET2 = 1;           
  TL2 = RCAP2L = LOBYTE( -15360 );  // 0.01s = (12/22.1184MHz) * 18432
  TH2 = RCAP2H = HIBYTE( -15360 );  // 0.01s = (12/18.4320MHz) * 15360
  T2MOD = 0x00;
  T2CON = 0x04;
  EA    = 1;
 
   while(1){}
}

static void Reload_Timer2_ISR(void) interrupt 5 using 3  
{ static unsigned i = 100;

  if(!--i)
  { P1_3=~P1_3;
     i = LDT;}
  TF2 = 0;
}*

to funguje naprosto ok

zkusil sem malou obmenu a preruseni zmenil

*static void Reload_Timer2_ISR(void) interrupt 5 using 3  
{ static unsigned i = 100;

  if(!--i)                  
  { v_jednotky++;          //v_jednotky je promenna typu CHAR
     P1=v_jednotky;
     i = LDT;
  }*

v simulatoru to je ok, ale v realu mi to blika odhadem po 2s a ne po 1s 
jak chci..kde sem udelal chybu??

dekuji.