[SOLVED] phase firing angle C code 8051

#include<reg52.h>
 sbit triac=P3^0;
 void cct_init(void);
 void initint0(void);
 unsigned char wek;
void cct_init(void)
 {
 P3=0x01; //my triac configuration toward mcu is active low.
 }
void delay(unsigned int count)  // Function to provide time delay in msec.
{
int i,j;
for(i=0;i<count;i++)
for(j=0;j<1275;j++);
}
void initint0(void)
 {
 IT0=1;
 EX0=1;
 EA=1;
 }

 void external0_isr(void) interrupt 0
 {wek=1; 
 }
 
 void main(void)
 {
  cct_init();
  initint0();

  if(wek==0)
  {triac=1;}
  else
  {delay(5);
  TMOD = 0x01; //Timer 1, mode 1 (16-bit)
  TL0=0xff;    // load TL with 0x00
  TH0=0xff;    //load TH with 0xDC
  TR0=1;     //start Timer1

  while(!TF0){;}   //wait for timer1 overflow

  TR0=0;     //stop timer1

  triac = 0;  //complement P3.0

  TF0=0;     //clear timer1 flag
  triac=1;
  
  }
}

#include<reg52.h>
 sbit triac=P3^0;
 void cct_init(void);
 void initint0(void);
void cct_init(void)
 {
 P3=0x01;
 }
void delay(unsigned int count)  // Function to provide time delay in msec.
{
int i,j;
for(i=0;i<count;i++)
for(j=0;j<1275;j++);
}
void initint0(void)
 {
 IT0=1;
 EX0=1;
 EA=1;
 }

 void external0_isr(void) interrupt 0
 {
 triac=0;
 delay(5);
 triac=1;
 }
 
 void main(void)
 {
  cct_init();
  initint0();
  while(1)
  {}
  
}