Hey there
I'm working at a Arduino Project which isn't working. It should be possible to read RFID tags with the RC522 Reader over the Ethernet Shield. The Ethernet Shield is plugged on the Arduino Uno and RC522 is connected with it.
I've written a code but it isn't working. Can someone help me and tell me why?
Thanks for your help
Greetings
Michel
You can find the Code down here:
/*
* Michel Kempf
*/
#include <SPI.h>
#include <Ethernet.h>
#include <MFRC522.h>
#define RST_PIN 9
#define SS_PIN 8
MFRC522 mfrc522(SS_PIN, RST_PIN); // Instanz für MFRC522 erzeugen
#define NR_KNOWN_KEYS 8
byte knownKeys[NR_KNOWN_KEYS][MFRC522::MF_KEY_SIZE] = {
{0xff, 0xff, 0xff, 0xff, 0xff, 0xff}, // FF FF FF FF FF FF = factory default
{0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5}, // A0 A1 A2 A3 A4 A5
{0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5}, // B0 B1 B2 B3 B4 B5
{0x4d, 0x3a, 0x99, 0xc3, 0x51, 0xdd}, // 4D 3A 99 C3 51 DD
{0x1a, 0x98, 0x2c, 0x7e, 0x45, 0x9a}, // 1A 98 2C 7E 45 9A
{0xd3, 0xf7, 0xd3, 0xf7, 0xd3, 0xf7}, // D3 F7 D3 F7 D3 F7
{0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff}, // AA BB CC DD EE FF
{0x00, 0x00, 0x00, 0x00, 0x00, 0x00} // 00 00 00 00 00 00
};
/*
* Inizialisieren
*/
void setup()
{
Serial.begin(9600); // Initialisiere serielle Verbindung mit dem Computer
while (!Serial); // Mache nichts wenn der serielle Port nicht frei ist
SPI.begin(); // Initialisiere SPI bus
mfrc522.PCD_Init(); // Initialisiere MFRC522 card
//Serial.println(F("Try the most used default keys to print block 0 of a MIFARE PICC."));
Serial.println("RFID Projekt");
Serial.println("=====================");
}
/*
* Hex Werte für die Serielle Übertragung
*/
void dump_byte_array(byte *buffer, byte bufferSize) {
for (byte i = 0; i < bufferSize; i++) {
Serial.print(buffer[i] < 0x10 ? " 0" : " ");
Serial.print(buffer[i], HEX);
}
}
//Keytest
boolean try_key(MFRC522::MIFARE_Key *key)
{
boolean result = false;
byte buffer[18];
byte block = 0;
MFRC522::StatusCode status;
if ( ! mfrc522.PICC_IsNewCardPresent())
return false;
if ( ! mfrc522.PICC_ReadCardSerial())
return false;
// Serial.println(F("Authenticating using key A..."));
status = mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, block, key, &(mfrc522.uid));
if (status != MFRC522::STATUS_OK) {
//Serial.print(F("PCD_Authenticate() failed: "));
//Serial.println(mfrc522.GetStatusCodeName(status));
return false;
}
// Lesen
byte byteCount = sizeof(buffer);
status = mfrc522.MIFARE_Read(block, buffer, &byteCount);
if (status != MFRC522::STATUS_OK) {
//Serial.print(F("MIFARE_Read() failed: "));
//Serial.println(mfrc522.GetStatusCodeName(status));
}
/*else {
// Erfolgreiches lesen
result = true;
Serial.print(F("Success with key:"));
dump_byte_array((*key).keyByte, MFRC522::MF_KEY_SIZE);
Serial.println();
Dump block data
Serial.print(F("Block ")); Serial.print(block); Serial.print(F(":"));
dump_byte_array(buffer, 16);
Serial.println();
}
Serial.println();
mfrc522.PICC_HaltA(); // Halt PICC
mfrc522.PCD_StopCrypto1(); // Stopt die RC522 Entschlüsselnung
return result;
}*/
/*
* Main loop
*/
void loop() {
// Neue Karte
if ( ! mfrc522.PICC_IsNewCardPresent())
return;
// Bekannte Karte
if ( ! mfrc522.PICC_ReadCardSerial())
return;
// Anzeige
Serial.print(F("Buhler AG")); //Überschrift
Serial.println();
Serial.print(F("ID:")); //ID Überschrift
dump_byte_array(mfrc522.uid.uidByte, mfrc522.uid.size); //ID Ausgabe
Serial.println();
Serial.println("---------------------");
delay(1000); // Pause beim Auslesen
/*
* Auskommentierung der PICC Type Ausgabe
*
//Serial.print(F("PICC type: "));
//MFRC522::PICC_Type piccType = mfrc522.PICC_GetType(mfrc522.uid.sak);
//Serial.println(mfrc522.PICC_GetTypeName(piccType));
delay(2000);
*
*/
// Überprüfung von unbekannten Schlüsseln
MFRC522::MIFARE_Key key;
for (byte k = 0; k < NR_KNOWN_KEYS; k++) {
// Kopieren des Chips ind die MIFARE_Key Struktur
for (byte i = 0; i < MFRC522::MF_KEY_SIZE; i++) {
key.keyByte[i] = knownKeys[k][i];
}
// Testen des Chips
if (try_key(&key)) {
// Chip gefunden
break;
}
}
}
