int val_1,val; 
void setup() { 
Serial.begin(115200); 
DDRA = 0xff; 
DDRC = 0xff; 
DDRH = 0x00; 
PORTH = 0xff; 
delay(100); 
} 

void loop() { 
for(int i = 0; i < 510; i++){ 
PORTA = min(i,510-i); 
PORTC = i; 
delay(200); 
val = PINA; 
val_1 = PINC; 
Serial.print(String(val) + ";"); 
Serial.println(String(val_1) + ";"); 
PORTH = 0xfe; 
delay(200); 
PORTH = 0xff; 
} 
}