int potPin = A0;
int b2Pin = 12;
int b1Pin = 11;
int b0Pin = 10;
int b0R = 3;
int b1R = 4;
int b2R = 5;
int outputPin = A4;

void setup() {
  pinMode(b2Pin, OUTPUT);
  pinMode(b1Pin, OUTPUT);
  pinMode(b0Pin, OUTPUT);
  pinMode(b2R, OUTPUT);
  pinMode(b1R, OUTPUT);
  pinMode(b0R, OUTPUT);
  pinMode(potPin, INPUT);
  pinMode(outputPin, INPUT);
  digitalWrite(b0R, LOW);
  digitalWrite(b1R, LOW);
  digitalWrite(b2R, LOW);
  Serial.begin(9600);
}

void loop() {
  int potValue = analogRead(potPin);
  int command = map(potValue, 0, 1023, 0, 7);

  int b2 = bitRead(command, 2);
  int b1 = bitRead(command, 1);
  int b0 = bitRead(command, 0);


  digitalWrite(b2Pin, b2);
  digitalWrite(b1Pin, b1);
  digitalWrite(b0Pin, b0);
  digitalWrite(b0R, b0);
  digitalWrite(b1R, b1);
  digitalWrite(b2R, b2);

  float theoreticalVoltage = 5.0 * (b2 * 0.5 + b1 * 0.25 + b0 * 0.125);
  float measuredVoltage = analogRead(outputPin) * 5.0 / 1023.0;
  float error = measuredVoltage - theoreticalVoltage;

  Serial.print("Commande : ");
  Serial.println(command);

  Serial.print("Binaire   : ");
  Serial.print(b2); Serial.print(b1); Serial.println(b0);

  Serial.print("Tension Théorique : ");
  Serial.print(theoreticalVoltage);
  Serial.println(" V");

  Serial.print("Tension Mesurée   : ");
  Serial.print(measuredVoltage);
  Serial.println(" V");

  Serial.print("Erreur            : ");
  Serial.print(error);
  Serial.println(" V");

  Serial.println("------------------------");

  delay(1000);
}