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/*
  060420 MODIFIED BY https://github.com/Gio-dot
  ADDED WIEGAND PROTOCOL READING ON SERIAL PINS 2 (D0) AND PIN 3 (D1)
  READING OUT CODE ON UART RX/TX PINS
*/

#include <SPI.h>
#include <MFRC522.h>
 
#define SS_PIN 10
#define RST_PIN 9
MFRC522 mfrc522(SS_PIN, RST_PIN);    // Create MFRC522 instance.

unsigned long duration_code = 0;    // MFRC 522 code duration (after a certain time sending empty code on the serial)
int flag_duration_code = 0;         // Flag to delete MFRC 522 only once

const int Out1 = 7;
const int Out2 = 8;
const int In1 = 5;
const int In2 = 6;
// const int In3 = 5;
// const int In4 = 6;
const int In1rd;
const int In2rd;
// const int In3rd;
// const int In4rd;
// int flag1off= 1;
// int flag1on= 1;
// int flag2off= 1;
// int flag2on= 1;
// int flag3off= 1;
// int flag3on= 1;
// int flag4off= 1;
// int flag4on= 1;


char st[20];
char ch;

void setup() 
{
  Serial.begin(9600);   // Initialiseer seriële communicatie
  SPI.begin();      // Initialiseer  SPI bus
  mfrc522.PCD_Init();   // Initialiseer MFRC522

  pinMode(Out1, OUTPUT);
  pinMode(Out2, OUTPUT);
  pinMode(In1, INPUT_PULLUP);
  pinMode(In2, INPUT_PULLUP);
}

void loop()
{
  // Look for new cards
  if ( ! mfrc522.PICC_IsNewCardPresent()) 
  {
    return;
  }
  // Select one of the cards
  if ( ! mfrc522.PICC_ReadCardSerial())
  {
    return;
  }
  // Toon UID tag
  Serial.print(" ");
  String inhoud= "";
  byte letter;
  for (byte i = 0; i < mfrc522.uid.size; i++) 
  {
     Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
     Serial.print(mfrc522.uid.uidByte[i], HEX);
     inhoud.concat(String(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " "));
     inhoud.concat(String(mfrc522.uid.uidByte[i], HEX));
     duration_code= millis();  // zero time to send empty chaodice Wiegand
     flag_duration_code= 1; // Flag to delete Wiegand only once
  }
  {
    delay(2000); // waits for 2 seconds
  }
  if ( ( (millis()-duration_code)>=2000)&&(flag_duration_code== 1) )
    {
        Serial.println(0);   // After 2 seconds of reading send empty Wiegand code to be ready for subsequent readings
        flag_duration_code= 0;
    }
  int In1rd = digitalRead(In1);   // read the status of the 2 entrances...
  int In2rd = digitalRead(In2);  

  if (Serial.available() > 0)
    {
      ch = Serial.read();
      // Serial.println (ch); //  
    } 

     if (ch == '1')
      {
         digitalWrite(Out1, LOW);
      }
      else if (ch == '2')
      {
        digitalWrite(Out1, HIGH);
      }
      else if (ch == '3')
      {
        digitalWrite(Out2, LOW);
      }
      else if (ch == '4')
      {
        digitalWrite(Out2, HIGH);
      }
}