/*main.c*/
sbit notA=P2^0;
sbit isA=P2^1;
sbit notB=P2^2;
sbit isB=P2^3;
sbit dir=P2^4;
void delay(){
int a, b;
for(a=0; a<5000; a++)
for(b=0; b<10000; b++)
a=a+0;
}
void move(int dir, int steps) {
int y, z;
/* clockwise movement */
if(dir == 1){
for(y=0; y<=steps; y++){
for(z=0; z<=19; z+4){
isA=lookup[z];
isB=lookup[z+1];
notA=lookup[z+2];
notB=lookup[z+3];
delay();
}
}
}
/* counter clockwise movement */
if(dir==0){
for(y=0; y<=step; y++){
for(z=19; z>=0; z - 4){
isA=lookup[z];
isB=lookup[z-1];
notA=lookup[z -2];
notB=lookup[z-3];
delay( );
}
}
}
}
void main( ){
int z;
int lookup[20] = {
1, 1, 0, 0,
0, 1, 1, 0,
0, 0, 1, 1,
1, 0, 0, 1,
1, 1, 0, 0 };
while(1){
/*move forward, 15 degrees (2 steps) */
move(1, 2);
/* move backwards, 7.5 degrees (1step)*/
move(0, 1);
}
}