코드변환기(2진->그레이코드)

#define B0 2

#define B1 3

#define B2 4

#define B3 5

#define G0 10

#define G1 11

#define G2 12

#define G3 13

void setup() {

 pinMode(B0, INPUT_PULLUP);

 pinMode(B1, INPUT_PULLUP);

 pinMode(B2, INPUT_PULLUP);

 pinMode(B3, INPUT_PULLUP);

 pinMode(G0, OUTPUT);

 pinMode(G1, OUTPUT);

 pinMode(G2, OUTPUT);

 pinMode(G3, OUTPUT);

}

void loop() {

   int b0 =  !digitalRead(B0);

   int b1 =  !digitalRead(B1);

   int b2 =  !digitalRead(B2);

   int b3 =  !digitalRead(B3);

   int g0 = b1^b0;

   int g1 = b2^b1;

   int g2 = b3^b2;

   int g3 = b3;

  if (g0 == HIGH) {

   digitalWrite(G0, HIGH);

   delay(1);

   digitalWrite(G0, LOW);

}

  if (g1 == HIGH) {

   digitalWrite(G1, HIGH);

   delay(1);

   digitalWrite(G1, LOW);

}

if (g2 == HIGH) {

   digitalWrite(G2, HIGH);

   delay(1);

   digitalWrite(G2, LOW);

}

if (g3 == HIGH) {

   digitalWrite(G3, HIGH);

   delay(1);

   digitalWrite(G3, LOW);

}

}