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RFID_Cloner.ino
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RFID_Cloner.ino
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byte data[64][16];
int count = 0;
int initial = 0;
int state = 0;
#include <SPI.h>
#include <MFRC522.h>
#define SS_PIN 10
#define RST_PIN 5
MFRC522 mfrc522(SS_PIN, RST_PIN);
MFRC522::MIFARE_Key key;
void setup() {
Serial.begin(9600);
SPI.begin();
mfrc522.PCD_Init();
Serial.println("Scan a MIFARE Classic card");
for (byte i = 0; i < 6; i++) {
key.keyByte[i] = 0xFF;
}
}
byte readbackblock[18];
void loop()
{
if(state == 0){
if ( ! mfrc522.PICC_IsNewCardPresent()) {
return;
}
if ( ! mfrc522.PICC_ReadCardSerial()) {
return;
}
Serial.println("Card selected, reading and saving data...");
if (initial == 0)
{
for (int i = 0; i<64; i++)
{
readBlock(i, readbackblock);
for (int j=0 ; j<16 ; j++)
{
data[i][j] = readbackblock[j];
}
}
}
initial++;
state++;
mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
Serial.println("Place card to clone now");
delay(5000);
}
else if(state == 1){
if ( ! mfrc522.PICC_IsNewCardPresent()) {
return;
}
if ( ! mfrc522.PICC_ReadCardSerial()) {
return;
}
if (initial == 1 && count == 0)
{
for (int f = 1; f < 64; f++)
{
if ((f % 4) != 3)
{
writeBlock(f, data[f]);
Serial.println("block written");
}
}
count ++;
}
Serial.println("Cloning finished");
state--;
}
}
int writeBlock(int blockNumber, byte arrayAddress[])
{
int largestModulo4Number=blockNumber/4*4;
int trailerBlock=largestModulo4Number+3;
if (blockNumber > 2 && (blockNumber+1)%4 == 0){Serial.print(blockNumber);Serial.println(" is a trailer block:");return 2;}
Serial.print(blockNumber);
Serial.println(" is a data block:");
byte status = mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, trailerBlock, &key, &(mfrc522.uid));
if (status != MFRC522::STATUS_OK) {
Serial.print("PCD_Authenticate() failed: ");
Serial.println(mfrc522.GetStatusCodeName(status));
return 3;
}
status = mfrc522.MIFARE_Write(blockNumber, arrayAddress, 16);
if (status != MFRC522::STATUS_OK) {
Serial.print("MIFARE_Write() failed: ");
Serial.println(mfrc522.GetStatusCodeName(status));
return 4;
}
Serial.println("Block was written");
}
int readBlock(int blockNumber, byte arrayAddress[])
{
int largestModulo4Number=blockNumber/4*4;
int trailerBlock=largestModulo4Number+3;
byte status = mfrc522.PCD_Authenticate(MFRC522::PICC_CMD_MF_AUTH_KEY_A, trailerBlock, &key, &(mfrc522.uid));
if (status != MFRC522::STATUS_OK) {
Serial.print("PCD_Authenticate() failed (read): ");
Serial.println(mfrc522.GetStatusCodeName(status));
return 3;
}
byte buffersize = 18;
status = mfrc522.MIFARE_Read(blockNumber, arrayAddress, &buffersize);
if (status != MFRC522::STATUS_OK) {
Serial.print("MIFARE_read() failed: ");
Serial.println(mfrc522.GetStatusCodeName(status));
return 4;
}
Serial.println("Block was read");
}