eitaaa

#define in1 10
#define in2 11

int s, erro, A,B,i=0;
float kp;

void setup() {
  // put your setup code here, to run once:
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
  pinMode(2, INPUT);
  pinMode(3, INPUT);
  Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:

  int ia = i;


  if(A==B){
    if(A!=digitalRead(2)){
      i++;
      A = digitalRead(2);
    }
    if(B!=digitalRead(3)){
      i--;
      B = digitalRead(3);
    }
  }

  else{
    if(A!=digitalRead(2)){
      i--;
      A = digitalRead(2);
    }
    if(B!=digitalRead(3)){
      i++;
      B = digitalRead(3);
    }
  }

  if(i != ia){
  Serial.print("\n\n\n\n\n\n\n pulsos:  ");
  Serial.println(i);
  Serial.print("\n");
}

  erro =

  s = kp*erro;

}

void frente(int pot, int temp){
  analogWrite(in1, pot);
  analogWrite(in2, 0);
  delay(temp);
}

void freio(int temp){
  analogWrite(in1, 0);
  analogWrite(in2, 0);
  delay(temp);
}

void re(int pot, int temp){
  analogWrite(in1, 0);
  analogWrite(in2, pot);
  delay(temp);
}