RFID mit dem Arduino programmieren: Unterschied zwischen den Versionen

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[[image:rfidreader.png|800px]]
 
[[image:rfidreader.png|800px]]
  
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= Referenzen und Links =
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= Hinweise =
 +
* MFRC522 --> Diese Library muss bei Verwendung der Arduino IDE mit Hilfe des Library Managers installiert werden
 
* [https://de.wikipedia.org/wiki/Serial_Peripheral_Interface SPI Erklärung auf Wikipedia]
 
* [https://de.wikipedia.org/wiki/Serial_Peripheral_Interface SPI Erklärung auf Wikipedia]
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 +
= Video Erklärung =
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{{#ev:youtube|https://youtu.be/gWKyRyll_nU|800}}
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 +
== Der Code zum Video ==
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<pre>
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 +
#include <MFRC522.h>
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 +
#define SS_PIN 10
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#define RST_PIN 13
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 +
MFRC522 rfid(SS_PIN, RST_PIN); // Instance of the class
 +
 +
MFRC522::MIFARE_Key key;
 +
 +
// Init array that will store new NUID
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byte nuidPICC[4];
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 +
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void setup() {
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 +
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  //while (!Serial);
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  Serial.begin(9600);
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 +
 +
  SPI.begin(); // Init SPI bus
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  rfid.PCD_Init(); // Init MFRC522
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 +
  //for (byte i = 0; i < 6; i++) {
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  //  key.keyByte[i] = 0xFF;
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  //}
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  //Serial.println(F("This code scan the MIFARE Classsic NUID."));
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  //Serial.print(F("Using the following key:"));
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  //printHex(key.keyByte, MFRC522::MF_KEY_SIZE);
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 +
 +
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}
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void loop() {
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  checkRFID();
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}
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 +
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void checkRFID() {
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  //Serial.println("Checking RFID");
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  // RFID Reader
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  // Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle.
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  if ( ! rfid.PICC_IsNewCardPresent())
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    return;
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  // Verify if the NUID has been readed
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  if ( ! rfid.PICC_ReadCardSerial())
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    return;
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 +
  //Serial.print(F("PICC type: "));
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  MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak);
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  //Serial.println(rfid.PICC_GetTypeName(piccType));
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  // Check is the PICC of Classic MIFARE type
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  if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI &&
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      piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
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      piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
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    Serial.println(F("Your tag is not of type MIFARE Classic."));
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    return;
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  }
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 +
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  printDec(rfid.uid.uidByte, rfid.uid.size);
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  rfid.PICC_HaltA();
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  // Stop encryption on PCD
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  rfid.PCD_StopCrypto1();
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}
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/**
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  Helper routine to dump a byte array as hex values to Serial.
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*/
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void printHex(byte *buffer, byte bufferSize) {
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  for (byte i = 0; i < bufferSize; i++) {
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    Serial.print(buffer[i] < 0x10 ? " 0" : " ");
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    Serial.print(buffer[i], HEX);
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  }
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}
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/**
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  Helper routine to dump a byte array as dec values to Serial.
 +
*/
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void printDec(byte *buffer, byte bufferSize) {
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  Serial.println("Printing RFID Tag");
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 +
  for (byte i = 0; i < bufferSize; i++) {
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    //Serial.print(buffer[i] < 0x10 ? " 0" : " ");
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    Serial.print(buffer[i], DEC);
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  }
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 +
  Serial.println();
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}
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</pre>

Aktuelle Version vom 24. August 2020, 14:04 Uhr

Bitte erst alle Kabel (Juper Wire) aufbauen, dann den Arduino über USB-Kabel anstecken. Ansonsten kann es sein, dass es nicht funktioniert.

Rfidreader.png

Hinweise

  • MFRC522 --> Diese Library muss bei Verwendung der Arduino IDE mit Hilfe des Library Managers installiert werden
  • SPI Erklärung auf Wikipedia

Video Erklärung

Der Code zum Video


#include <MFRC522.h>

#define SS_PIN 10
#define RST_PIN 13

MFRC522 rfid(SS_PIN, RST_PIN); // Instance of the class

MFRC522::MIFARE_Key key;

// Init array that will store new NUID
byte nuidPICC[4];


void setup() {


  //while (!Serial);
  Serial.begin(9600);


  SPI.begin(); // Init SPI bus
  rfid.PCD_Init(); // Init MFRC522

  //for (byte i = 0; i < 6; i++) {
  //  key.keyByte[i] = 0xFF;
  //}

  //Serial.println(F("This code scan the MIFARE Classsic NUID."));
  //Serial.print(F("Using the following key:"));
  //printHex(key.keyByte, MFRC522::MF_KEY_SIZE);



}

void loop() {
  checkRFID();
}


void checkRFID() {
  //Serial.println("Checking RFID");
  // RFID Reader
  // Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle.
  if ( ! rfid.PICC_IsNewCardPresent())
    return;

  // Verify if the NUID has been readed
  if ( ! rfid.PICC_ReadCardSerial())
    return;

  //Serial.print(F("PICC type: "));
  MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak);
  //Serial.println(rfid.PICC_GetTypeName(piccType));

  // Check is the PICC of Classic MIFARE type
  if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI &&
      piccType != MFRC522::PICC_TYPE_MIFARE_1K &&
      piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
    Serial.println(F("Your tag is not of type MIFARE Classic."));
    return;
  }


  printDec(rfid.uid.uidByte, rfid.uid.size);

  rfid.PICC_HaltA();

  // Stop encryption on PCD
  rfid.PCD_StopCrypto1();
}

/**
   Helper routine to dump a byte array as hex values to Serial.
*/
void printHex(byte *buffer, byte bufferSize) {
  for (byte i = 0; i < bufferSize; i++) {
    Serial.print(buffer[i] < 0x10 ? " 0" : " ");
    Serial.print(buffer[i], HEX);
  }
}

/**
   Helper routine to dump a byte array as dec values to Serial.
*/
void printDec(byte *buffer, byte bufferSize) {
  Serial.println("Printing RFID Tag");

  for (byte i = 0; i < bufferSize; i++) {
    //Serial.print(buffer[i] < 0x10 ? " 0" : " ");
    Serial.print(buffer[i], DEC);
  }

  Serial.println();
}
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