#include <TimerOne.h>
#define TERMO A1
int t = 0;
int dec;
int uni;
int decimal;
int X = 0;
int temp;


// Pines para los segmentos A-G del display de 7 segmentos
#define dig1 9
#define dig2 10
#define A 2 // Segmento A
#define B 3 // Segmento B
#define C 4 // Segmento C
#define D 5 // Segmento D
#define E 6 // Segmento E
#define F 7 // Segmento F
#define G 8 // Segmento G


void setup() {
  pinMode(A, OUTPUT);
  pinMode(B, OUTPUT);
  pinMode(C, OUTPUT);
  pinMode(D, OUTPUT);
  pinMode(E, OUTPUT);
  pinMode(F, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(dig1, OUTPUT);
  pinMode(dig2, OUTPUT);

  digitalWrite(dig1, HIGH);
  digitalWrite(dig1, HIGH);

  Timer1.initialize(10000); // 10 ms
  Timer1.attachInterrupt(ISR_Blink); // Configuramos la interrupción

  Serial.begin(9600);
}
void ISR_Blink() {  //esta es la interrupción, primero desactivo las interrupciones coloco la variable A en 1, que luego me                                         //va a permitir desbloquear el loop.
  noInterrupts();   // Suspende las interrupciones
  X = 1;            //
  interrupts();     // Autoriza las interrupciones
}


void loop() {        // En el loop coloco un condicional para que solo recorra el còdigo si la variable A==1 , la interrupciòn de                                     //timer me coloca A=1 cada 1 ms
  if (X == 1) {    //
    X = 0;         //ni bien paso el condicional, coloco la variable A=0
    t++;
if (t <= 50) {
    digitalWrite(dig2, LOW);
    digitalWrite(dig1, HIGH);
    disp(dec);
  
digitalWrite(A, HIGH);
digitalWrite(B, HIGH);
digitalWrite(C, HIGH);
digitalWrite(D, HIGH);
digitalWrite(E, HIGH);
digitalWrite(F, HIGH);
digitalWrite(G, HIGH);
  } 
  else {
    digitalWrite(dig2, HIGH);
    digitalWrite(dig1, LOW);
    disp(uni);

digitalWrite(A, HIGH);
digitalWrite(B, HIGH);
digitalWrite(C, HIGH);
digitalWrite(D, HIGH);
digitalWrite(E, HIGH);
digitalWrite(F, HIGH);
digitalWrite(G, HIGH);

  if (t = 500) { // El sensor leera cada 500 ms
    temp = analogRead(A1);
    const float BETA = 3950; // debe coincidir con el coeficiente beta del termistor
    float celsius = 1 / (log(1 / (1023. / temp - 1)) / BETA + 1.0 / 298.15) - 273.15;

    // Imprime la temperatura en el monitor serial
    Serial.print("Temperatura: ");
    Serial.print(celsius);
    Serial.println(" °c");
    dec = celsius / 10;
    uni = celsius - (dec * 10);
  }
  
}
}
}

void disp (int dato) {  
  digitalWrite(A, LOW);
  digitalWrite(B, LOW);
  digitalWrite(C, LOW);
  digitalWrite(D, LOW);
  digitalWrite(E, LOW);
  digitalWrite(F, LOW);
  digitalWrite(G, LOW);

  if (dato == 0) {
    digitalWrite(A, HIGH);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, HIGH);
    digitalWrite(G, LOW);
  }

  if (dato == 1) {
    digitalWrite(A, LOW);
    digitalWrite(B, HIGH);
    digitalWrite(C, HIGH);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
  }

  if (dato == 2) {
    digitalWrite(A, LOW);
    digitalWrite(B, LOW);
    digitalWrite(C, HIGH);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, HIGH);
    digitalWrite(G, LOW);
  }

  if (dato == 3) {
    digitalWrite(A, LOW);
    digitalWrite(B, LOW);
    digitalWrite(C, LOW);
    digitalWrite(D, LOW);
    digitalWrite(E, HIGH);
    digitalWrite(F, HIGH);
    digitalWrite(G, LOW);
  }


  if (dato == 4) {
    digitalWrite(A, HIGH);
    digitalWrite(B, LOW);
    digitalWrite(C, LOW);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
  }


  if (dato == 5) {
    digitalWrite(A, LOW);
    digitalWrite(B, HIGH);
    digitalWrite(C, LOW);
    digitalWrite(D, LOW);
    digitalWrite(E, HIGH);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
  }


  if (dato == 6) {
    digitalWrite(A, LOW);
    digitalWrite(B, HIGH);
    digitalWrite(C, LOW);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
  }


  if (dato == 7) {
    digitalWrite(A, LOW);
    digitalWrite(B, LOW);
    digitalWrite(C, LOW);
    digitalWrite(D, HIGH);
    digitalWrite(E, HIGH);
    digitalWrite(F, HIGH);
    digitalWrite(G, HIGH);
  }

  if (dato == 8) {
    digitalWrite(A, LOW);
    digitalWrite(B, LOW);
    digitalWrite(C, LOW);
    digitalWrite(D, LOW);
    digitalWrite(E, LOW);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
  }

  if (dato == 9) {
    digitalWrite(A, LOW);
    digitalWrite(B, LOW);
    digitalWrite(C, LOW);
    digitalWrite(D, LOW);
    digitalWrite(E, HIGH);
    digitalWrite(F, LOW);
    digitalWrite(G, LOW);
  }
}