MikroC timer interrupt problem v 1.1

[ucsam]

Hey guys i am having a serious problem.
The following program compiles successfully but when i turn on the system, there wont be be timer (caused) delay ( which can be set via some switches) after looking for long time, i figured that the timer 0 ISR is not being served. Since, I am new to MickroC compiler for 8051. Help me out!!

sbit LCD_RS at P2.B0;
sbit LCD_EN at P2.B1;

sbit LCD_D7 at P2.B5;
sbit LCD_D6 at P2.B4;
sbit LCD_D5 at P2.B3;
sbit LCD_D4 at P2.B2;


sbit ok at P2.B7;
sbit inc at P2.B6;
sbit led at P3.B0;


volatile char power_flag=0;
 volatile char time_variable=1;
 volatile int time_count=0;


void main(void)
 {

TMOD=0x01;
EA=1;
 ET0=1;
TH0=0xB8;
TL0=0x00;
ok=inc=1;

 Lcd_Init();                        // Initialize LCD
 Lcd_Out(1,6,"Hello!");
 led=0;
 delay_ms(500);
 led=1;
 delay_ms(500);

 while(1)
 {
  Lcd_Out(1,1,"Set time:   sec");
  while(ok)
  {
  if(!inc)
  delay_ms(20);
  if(!inc)
  {
  time_variable++;
  if(time_variable>99)
  time_variable=1;
  }
  Lcd_Chr(1,11,((time_variable/10)+48));
  Lcd_Chr(1,12,((time_variable%10)+48));
  }
  delay_ms(500);
  Lcd_Out(2,2,"Timer Running!");
  TR0=1;
 while(power_flag)
 PCON=0x02;
 TR0=0;
  led=0;
  delay_ms(100);
   led=1;
  delay_ms(100);
  Lcd_Out(2,1,"                ");
  Lcd_Out(2,3,"Timer over!");
  delay_ms(300);

}
}
  void timer_int(void) org 0x0B ilevel 0
{
time_count++;
if(time_count<50*time_variable)
power_flag=1;
else
{
time_variable=0;
time_count=0;
power_flag=0;
}
TH0=0xB8;
TL0=0x00;
return;
}

 

[bigdogguru]

What is the exact 8051 variant you are using, AT89S51, C8051F120, etc?

BigDog

 

[ucsam]

I am using AT89s51.