int segG = 25;
int segF = 26;
int segA = 32;
int segB = 33;
int segE = 13;
int segD = 12;
int segC = 14;
int segP = 27;

void setup() {
  Serial.begin(115200);
  Serial.print('G');
  pinMode(segA, OUTPUT);
  pinMode(segB, OUTPUT);
  pinMode(segC, OUTPUT);
  pinMode(segD, OUTPUT);
  pinMode(segE, OUTPUT);
  pinMode(segF, OUTPUT);
  pinMode(segG, OUTPUT);
  pinMode(segP, OUTPUT);
}
char c;
void loop() {

  if(Serial.available()>0){
    c = Serial.read();
  }

  if(c=='0'){
  desliga();
  zero();
  }
   if(c=='1'){
  desliga();
  um();
  }
   if(c=='2'){
  desliga();
  dois();
  }
   if(c=='3'){
  desliga();
  tres();
  }
   if(c=='4'){
  desliga();
  quatro();
  }
   if(c=='5'){
  desliga();
  cinco();
  }
   if(c=='6'){
  desliga();
  seis();
  }
   if(c=='7'){
  desliga();
  sete();
  }
   if(c=='8'){
  desliga();
  oito();
  }
   if(c=='9'){
  desliga();
  nove();
  }
}

void zero(){
  digitalWrite(segA, HIGH);
  digitalWrite(segB, HIGH);
  digitalWrite(segC, HIGH);
  digitalWrite(segD, HIGH);
  digitalWrite(segE, HIGH);
  digitalWrite(segF, HIGH);
}

void um(){
  digitalWrite(segB, HIGH);
  digitalWrite(segC, HIGH);
}

void dois(){
  digitalWrite(segA, HIGH);
  digitalWrite(segB, HIGH);
  digitalWrite(segD, HIGH);
  digitalWrite(segE, HIGH);
  digitalWrite(segG, HIGH);
}

void tres(){
  digitalWrite(segA, HIGH);
  digitalWrite(segB, HIGH);
  digitalWrite(segC, HIGH);
  digitalWrite(segD, HIGH);
  digitalWrite(segG, HIGH);
}

void quatro(){
  digitalWrite(segB, HIGH);
  digitalWrite(segC, HIGH);
  digitalWrite(segF, HIGH);
  digitalWrite(segG, HIGH);
}

void cinco(){
  digitalWrite(segA, HIGH);
  digitalWrite(segC, HIGH);
  digitalWrite(segD, HIGH);
  digitalWrite(segF, HIGH);
  digitalWrite(segG, HIGH);
}

void seis(){
  digitalWrite(segC, HIGH);
  digitalWrite(segD, HIGH);
  digitalWrite(segE, HIGH);
  digitalWrite(segF, HIGH);
  digitalWrite(segG, HIGH);
}

void sete(){
  digitalWrite(segA, HIGH);
  digitalWrite(segB, HIGH);
  digitalWrite(segC, HIGH);
}

void oito(){
  digitalWrite(segA, HIGH);
  digitalWrite(segB, HIGH);
  digitalWrite(segC, HIGH);
  digitalWrite(segD, HIGH);
  digitalWrite(segE, HIGH);
  digitalWrite(segF, HIGH);
  digitalWrite(segG, HIGH);
}

void nove(){
  digitalWrite(segA, HIGH);
  digitalWrite(segB, HIGH);
  digitalWrite(segC, HIGH);
  digitalWrite(segF, HIGH);
  digitalWrite(segG, HIGH);
}

void desliga(){
  digitalWrite(segA, LOW);
  digitalWrite(segB, LOW);
  digitalWrite(segC, LOW);
  digitalWrite(segD, LOW);
  digitalWrite(segE, LOW);
  digitalWrite(segF, LOW);
  digitalWrite(segG, LOW);
}