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- /*
- * --------------------------------------------------------------------------------------------------------------------
- * Example sketch/program to fix a broken UID changeable MIFARE cards.
- * --------------------------------------------------------------------------------------------------------------------
- * This is a MFRC522 library example; for further details and other examples see: https://github.com/miguelbalboa/rfid
- *
- * This sample shows how to fix a broken UID changeable MIFARE cards that have a corrupted sector 0.
- *
- * @author Tom Clement
- * @license Released into the public domain.
- *
- * Typical pin layout used:
- * -----------------------------------------------------------------------------------------
- * MFRC522 Arduino Arduino Arduino Arduino Arduino
- * Reader/PCD Uno/101 Mega Nano v3 Leonardo/Micro Pro Micro
- * Signal Pin Pin Pin Pin Pin Pin
- * -----------------------------------------------------------------------------------------
- * RST/Reset RST 9 5 D9 RESET/ICSP-5 RST
- * SPI SS SDA(SS) 10 53 D10 10 10
- * SPI MOSI MOSI 11 / ICSP-4 51 D11 ICSP-4 16
- * SPI MISO MISO 12 / ICSP-1 50 D12 ICSP-1 14
- * SPI SCK SCK 13 / ICSP-3 52 D13 ICSP-3 15
- */
-
- #include <SPI.h>
- #include <MFRC522.h>
- #include <MFRC522Hack.h>
-
- constexpr uint8_t RST_PIN = 9; // Configurable, see typical pin layout above
- constexpr uint8_t SS_PIN = 10; // Configurable, see typical pin layout above
-
- MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance.
- MFRC522Hack mfrc522Hack(&mfrc522); // Create MFRC522Hack instance.
-
- MFRC522::MIFARE_Key key;
-
- void setup() {
- Serial.begin(9600); // Initialize serial communications with the PC
- while (!Serial); // Do nothing if no serial port is opened (added for Arduinos based on ATMEGA32U4)
- SPI.begin(); // Init SPI bus
- mfrc522.PCD_Init(); // Init MFRC522 card
- Serial.println(F("Warning: this example clears your mifare UID, use with care!"));
-
- // Prepare key - all keys are set to FFFFFFFFFFFFh at chip delivery from the factory.
- for (byte i = 0; i < 6; i++) {
- key.keyByte[i] = 0xFF;
- }
- }
-
- void loop() {
- if ( mfrc522Hack.MIFARE_UnbrickUidSector(false) ) {
- Serial.println(F("Cleared sector 0, set UID to 1234. Card should be responsive again now."));
- }
- delay(1000);
- }
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