Serial2display

/*
BLINK.C > Serial2Sevensecment
Device: 89S51

compiler: SDCC on MIDE-51 >> http://sdcc.sourceforge.net/
Bandung 21 Mei 13
Done: 28 Mei 2013
*/

#include <at89x51.h>

char tabel[]={238,130,118,214,154,220,252,134,254,222,0,16};
int i,j,x,id;
int tock,second,minute,hour;
volatile unsigned char n ;
volatile unsigned int tick,k,xblink;
volatile char index[10],buffer[11];

void TimerISR (void) __interrupt TF0_VECTOR // OK 22 mei 13
{
	TH0=0xDC;
	TL0=0x00;
	tick++;
	if(tick==2){
		tick=0;


      	if(i==0) {i=0x10;
      		 }
      	i=i>>1;
        P0=i;
        P2 =tabel[index[j]]; //
        j++;
        if(j==10) j=5;

	}
}

//--------------
void SerialISR (void) __interrupt SI0_VECTOR //4 23may13
{
	if (RI)
	{

		n = SBUF;
		RI = 0;
		if(n=='*'){k=0;}

		//index[k]=n-48;
		buffer[k]=n-48;
		if(n==' '){
			//index[k]=10;
			buffer[k]=10;
			}
		k++;
		xblink=0;
		if(buffer[3]+48=='B'){
			xblink=buffer[4]*10+buffer[5];
			}
		//if(k==10) k=6;
		//}
	}
	else if (TI)
	{
		SBUF = n;
		TI = 0;
	}
}
//--------------

void delay(int n)
    {
      int i, j;
      for (i=1;i<=n;i++)
        for (j=1;j<=10;j++);
    }

void putchar (char c)
{
  while (!TI);
  TI = 0;
  SBUF = c;
}

char getchar(void)
{
  if (RI!=0)
  {
    RI = 0;
    return SBUF;
  }
  else
    return -1;
}

void initseri()
{

       PCON = 0x80;
       TH1 = 0xFA;
       TR1 = 1;
       ES = 1;
       TI = 0;
       RI = 0;
       EA = 1;
}


void blink()
{
		delay(5000);
		TR0=0;
		P0=0x00;
		P2=0xff;
		delay(5000);
		TR0=1;
}
//------------------------------------------------------------------------------

int main(void)
{

TL0=0;
TH0=0;
ET0=1;
EA = 0;
SCON = 0x50;
TMOD |= 0x22;

TR0=1;
TR1 = 1;
ES = 1;
EA = 1;

id=P1;
id &=0b00111111;

initseri();
i=0x10;
j=6;

index[6]=11;
index[7]=11;
index[8]=11;
index[9]=11;
k=6;

while(1) //loop
	{

	int n=0;
	n=((buffer[1])*10)+(buffer[2]); //25may13
	if(n==id){
		n=6;
		while(n<10){
			index[n]=buffer[n];
			n++;
		}

	if(xblink!=0 && (buffer[3]+48=='B')){
		blink();
		xblink--;
		}
	}
}

}// main-------