Rfid basic with LED

1#include <SPI.h>
2#include <MFRC522.h>
3#define SS_PIN 10
4#define   RST_PIN 9
5#define OUT_PIN_GREEN 6
6#define OUT_PIN_RED 7
7#define NUMBER_OF_KEYS   2
8
9MFRC522 mfrc522(SS_PIN, RST_PIN);
10
11// Array mit den zugelassenen   RFID-UIDs
12static unsigned short code[NUMBER_OF_KEYS][4] = { {100, 200, 300, 400},{111,   222, 333, 444} };
13
14void setup()
15{
16
17  Serial.begin(9600);
18  SPI.begin();
19   mfrc522.PCD_Init();
20  pinMode (OUT_PIN_GREEN, OUTPUT);
21  pinMode (OUT_PIN_RED,   OUTPUT);
22
23}
24
25
26void loop()
27{
28  // Wenn eine RFID-Karte in der   Nähe ist:
29  if (mfrc522.PICC_IsNewCardPresent())
30  {
31    unsigned short   doOpen = checkID();
32    if (doOpen != 0) {
33
34      digitalWrite (OUT_PIN_GREEN,   HIGH);
35      delay (5000);
36      digitalWrite (OUT_PIN_GREEN, LOW);
37    }else{
38
39       digitalWrite (OUT_PIN_RED, HIGH);
40      delay (5000);
41      digitalWrite   (OUT_PIN_RED, LOW);
42    }
43  }
44
45}
46
47/**
48   mfrc522.PICC_IsNewCardPresent()   muss zuvor überprüft werden.
49   @return 0 wenn false, 1 wenn true
50*/
51unsigned   short checkID() {
52  if ( ! mfrc522.PICC_ReadCardSerial()) {
53    return 0;
54   }
55
56  Serial.print("Groesse: "); Serial.println(mfrc522.uid.size);
57   Serial.print("UID 1: "); Serial.println( mfrc522.uid.uidByte[0]);
58  Serial.print("UID   2: "); Serial.println( mfrc522.uid.uidByte[1]);
59  Serial.print("UID 3: ");   Serial.println( mfrc522.uid.uidByte[2]);
60  Serial.print("UID 4: "); Serial.println(   mfrc522.uid.uidByte[3]);
61
62  short doOpen = 0, i;
63  for(i=0; i<NUMBER_OF_KEYS;   i++){
64    if(mfrc522.uid.uidByte[0]==code[i][0] && mfrc522.uid.uidByte[1]==code[i][1]   && mfrc522.uid.uidByte[2]==code[i][2] && mfrc522.uid.uidByte[3]==code[i][3]){
65       doOpen = 1;
66      Serial.println("Code akzeptiert!");
67      break;
68     }
69  }
70  
71  mfrc522.PICC_HaltA(); // Stop reading
72  return doOpen;
73}

1#include <SPI.h>
2#include <MFRC522.h>
3#define SS_PIN 10
4#define  RST_PIN 9
5#define OUT_PIN_GREEN 6
6#define OUT_PIN_RED 7
7#define NUMBER_OF_KEYS  2
8
9MFRC522 mfrc522(SS_PIN, RST_PIN);
10
11// Array mit den zugelassenen  RFID-UIDs
12static unsigned short code[NUMBER_OF_KEYS][4] = { {100, 200, 300, 400},{111,  222, 333, 444} };
13
14void setup()
15{
16
17  Serial.begin(9600);
18  SPI.begin();
19  mfrc522.PCD_Init();
20  pinMode (OUT_PIN_GREEN, OUTPUT);
21  pinMode (OUT_PIN_RED,  OUTPUT);
22
23}
24
25
26void loop()
27{
28  // Wenn eine RFID-Karte in der  Nähe ist:
29  if (mfrc522.PICC_IsNewCardPresent())
30  {
31    unsigned short  doOpen = checkID();
32    if (doOpen != 0) {
33
34      digitalWrite (OUT_PIN_GREEN,  HIGH);
35      delay (5000);
36      digitalWrite (OUT_PIN_GREEN, LOW);
37    }else{
38
39      digitalWrite (OUT_PIN_RED, HIGH);
40      delay (5000);
41      digitalWrite  (OUT_PIN_RED, LOW);
42    }
43  }
44
45}
46
47/**
48   mfrc522.PICC_IsNewCardPresent()  muss zuvor überprüft werden.
49   @return 0 wenn false, 1 wenn true
50*/
51unsigned  short checkID() {
52  if ( ! mfrc522.PICC_ReadCardSerial()) {
53    return 0;
54  }
55
56  Serial.print("Groesse: "); Serial.println(mfrc522.uid.size);
57  Serial.print("UID 1: "); Serial.println( mfrc522.uid.uidByte[0]);
58  Serial.print("UID  2: "); Serial.println( mfrc522.uid.uidByte[1]);
59  Serial.print("UID 3: ");  Serial.println( mfrc522.uid.uidByte[2]);
60  Serial.print("UID 4: "); Serial.println(  mfrc522.uid.uidByte[3]);
61
62  short doOpen = 0, i;
63  for(i=0; i<NUMBER_OF_KEYS;  i++){
64    if(mfrc522.uid.uidByte[0]==code[i][0] && mfrc522.uid.uidByte[1]==code[i][1]  && mfrc522.uid.uidByte[2]==code[i][2] && mfrc522.uid.uidByte[3]==code[i][3]){
65      doOpen = 1;
66      Serial.println("Code akzeptiert!");
67      break;
68    }
69  }
70  
71  mfrc522.PICC_HaltA(); // Stop reading
72  return doOpen;
73}