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