[Help] traffic light with MSP430

 #include  "msp430g2231.h" 
int data[]={0,1,2,3,4,5,6,7,8,9};
int add[]={0x00,0x10,0x20,0x30}; 
int i,j,chuc,donvi;
void hienthi1()
{
  
  {
    P1OUT = data[chuc] | add[0];//xuat hang chuc
    __delay_cycles(1);
    P1OUT = data[donvi] | add[1]; //xuat hang don vi
    __delay_cycles(1);
  }
}

void main(void) 
{ 
  WDTCTL = WDTPW + WDTHOLD;   // watchdog timer setup 
  BCSCTL1 = 0x80;                            // Set range = 0x80 ; RSEL = 0;         
                            // DCOCTL = 0xC0;  // DCO=3; MOD = 0 
  DCOCTL |= DCO1 + DCO0 + MOD0; // DCO=3; MOD = 0  
 
//=======> f = 0.12Mhz 
  P1DIR = 0xff;   
  P2DIR = 0xff;// I/O setup 
 
  BCSCTL2 |= SELM_0 + DIVM_3;    // select DCOCLK  ; divide = 8 
        // ===> f = 0.12 / 8 MHz 
  while(1) 
  { 
    for(i=25;i>=0;i--)
   {  
    chuc=i/10;
    donvi=i%10;
   
    hienthi1();
     __delay_cycles(7500);
   }

}
}