Đếm với CCS

[nhnp0708]

Em dùng Timer0 và Timer1 đếm ngoài nhưng nó không chạy??? đã thử dùng Internal thì chạy vù vù. Các pác check dùm em nhé
code

#include "d:\code ccs\devices\16F877A.h"
#include "d:\code ccs\define\def_16F877A.h"
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=10000000)
#include "d:\code ccs\func\lcd_lib_4bit.c"

//Variable
int16 countA,countB;
int8 i,j;

//Interrupt
#INT_TIMER2
void isr_timer2()
{
i = get_timer0();
j = get_timer1();
countA += i;
countB += j;
set_timer0(0);
set_timer1(0);
}

void main()
{
set_tris_a(0xFF);
set_tris_c(0xFF);
set_tris_d(0x00);
lcd_init();

setup_timer_0 (RTCC_EXT_H_TO_L);
setup_timer_1 (T1_EXTERNAL);
//setup_timer_0 (RTCC_INTERNAL);
//setup_timer_1 (T1_INTERNAL);
countA =0;
countB =0;
set_timer0(0);
set_timer1(0);

setup_timer_2 ( T2_DIV_BY_1, 0xFA, 1); //10ms/interrupt
enable_interrupts(INT_TIMER2);
enable_interrupts(GLOBAL);

while(true)
{
LCD_putcmd(Line_1);
printf(LCD_putchar,"A: %lu",countA);
LCD_putcmd(Line_2);
printf(LCD_putchar,"B: %lu",countB);
}
}