rfid_liga_tirar_tag_final

#include <SPI.h>
#include <MFRC522.h>

#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
int relepin = 7;
char st[20];
byte State = 0;

void setup()
{
  Serial.begin(9600);
  SPI.begin(); // Inicia SPI bus
  mfrc522.PCD_Init(); // Inicia MFRC522
  pinMode (relepin , OUTPUT) ;
}

void loop()
{
  if( digitalRead(relepin) == HIGH )
  {
    Serial.println("BONECA");
  }

  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial())
  {
    digitalWrite (relepin , HIGH);
  }
  // Look for new cards
  if ( ! mfrc522.PICC_IsNewCardPresent())
  {
    return ;
  }
  //Serial.print("UID da tag :");
  String conteudo= "";
  byte letra;
  for (byte i = 0; i < mfrc522.uid.size; i++)
  {
    //Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
    //Serial.print(mfrc522.uid.uidByte[i], HEX);
    conteudo.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
    conteudo.concat(String(mfrc522.uid.uidByte[i], HEX));
  }
  conteudo.toUpperCase();
  if (conteudo.substring(1) == "E3 F5 31 DB") //UID 1 - Chaveiro
  {
    digitalWrite (relepin , LOW);
    Serial.println("standby");
  }



  delay(1000);
}