Bluetooth operated dot matrix display: Page 3 of 3

#include<reg51.h>

#define ROW P2

#define COL P0

void init();

int msgFlag=0;

int r_c[]={0,0,0};

char row[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};

char col[]={0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff,};

 

void serialMsg() interrupt 4

{

 if(RI)

{

r_c[msgFlag]=SBUF-48;msgFlag++; 

if(msgFlag==3)

{

msgFlag=0;

if(r_c[2]==1){col[r_c[0]]=~((~col[r_c[0]])|(~row[r_c[1]]));}//ON

else if(r_c[2]==0){col[r_c[0]]=col[r_c[0]]|(~row[r_c[1]]);}//0FF

 }

 }

 RI=0;

}

 

void main()

{

int i,delay;

 init();

 while(1)

{

for(i=0;i<=7;i++)

{

ROW=row[i];

COL=col[i];

for(delay=0;delay<=100;delay++);

}

 }

}

void init()

{

 EA=1;

 ES=1;

 SCON=0x50;

 TMOD=0x20;

 TH1=0xfd;

 TR1=1;

}