void setup() {
volatile char *dirf,*dirk,*outf,*ink, x,i;
volatile long j;
outf=(char*)0x31; ink=(char*)0x106;
*dirf=0xff; *dirk=0x00;
i=(char)0x00;
while(1){
x=*ink;
if((x & 0x01)==0x01){
i++;
if(i>9) i=0;
for(j=0; j<100000; j++);
}
if((x & 0x02)==0x02){
i--;
if(i<0) i=9;
for(j=0; j<100000; j++);
}
switch(i){
case 0:*outf=0x3f;break;
case 1:*outf=0x06;break;
case 2:*outf=0x5b;break;
case 3:*outf=0x4f;break;
case 4:*outf=0x66;break;
case 5:*outf=0x6d;break;
case 6:*outf=0x7d;break;
case 7:*outf=0x07;break;
case 8:*outf=0x7f;break;
case 9:*outf=0x6f;break;
}
}
}
void loop() {
// put your main code here, to run repeatedly:
}