mirror of https://github.com/arendst/Tasmota.git
111 lines
4.1 KiB
C++
111 lines
4.1 KiB
C++
/*
|
|
* --------------------------------------------------------------------------------------------------------------------
|
|
* Example to change UID of changeable MIFARE card.
|
|
* --------------------------------------------------------------------------------------------------------------------
|
|
* This is a MFRC522 library example; for further details and other examples see: https://github.com/miguelbalboa/rfid
|
|
*
|
|
* This sample shows how to set the UID on a UID changeable MIFARE card.
|
|
*
|
|
* @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>
|
|
|
|
#define RST_PIN 9 // Configurable, see typical pin layout above
|
|
#define SS_PIN 10 // Configurable, see typical pin layout above
|
|
|
|
MFRC522 mfrc522(SS_PIN, RST_PIN); // Create MFRC522 instance
|
|
|
|
/* Set your new UID here! */
|
|
#define NEW_UID {0xDE, 0xAD, 0xBE, 0xEF}
|
|
|
|
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 overwrites the UID of your UID changeable card, 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;
|
|
}
|
|
}
|
|
|
|
// Setting the UID can be as simple as this:
|
|
//void loop() {
|
|
// byte newUid[] = NEW_UID;
|
|
// if ( mfrc522.MIFARE_SetUid(newUid, (byte)4, true) ) {
|
|
// Serial.println("Wrote new UID to card.");
|
|
// }
|
|
// delay(1000);
|
|
//}
|
|
|
|
// But of course this is a more proper approach
|
|
void loop() {
|
|
|
|
// Reset the loop if no new card present on the sensor/reader. This saves the entire process when idle. And if present, select one.
|
|
if ( ! mfrc522.PICC_IsNewCardPresent() || ! mfrc522.PICC_ReadCardSerial() ) {
|
|
delay(50);
|
|
return;
|
|
}
|
|
|
|
// Now a card is selected. The UID and SAK is in mfrc522.uid.
|
|
|
|
// Dump UID
|
|
Serial.print(F("Card UID:"));
|
|
for (byte i = 0; i < mfrc522.uid.size; i++) {
|
|
Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
|
|
Serial.print(mfrc522.uid.uidByte[i], HEX);
|
|
}
|
|
Serial.println();
|
|
|
|
// Dump PICC type
|
|
// MFRC522::PICC_Type piccType = mfrc522.PICC_GetType(mfrc522.uid.sak);
|
|
// Serial.print(F("PICC type: "));
|
|
// Serial.print(mfrc522.PICC_GetTypeName(piccType));
|
|
// Serial.print(F(" (SAK "));
|
|
// Serial.print(mfrc522.uid.sak);
|
|
// Serial.print(")\r\n");
|
|
// if ( piccType != MFRC522::PICC_TYPE_MIFARE_MINI
|
|
// && piccType != MFRC522::PICC_TYPE_MIFARE_1K
|
|
// && piccType != MFRC522::PICC_TYPE_MIFARE_4K) {
|
|
// Serial.println(F("This sample only works with MIFARE Classic cards."));
|
|
// return;
|
|
// }
|
|
|
|
// Set new UID
|
|
byte newUid[] = NEW_UID;
|
|
if ( mfrc522.MIFARE_SetUid(newUid, (byte)4, true) ) {
|
|
Serial.println(F("Wrote new UID to card."));
|
|
}
|
|
|
|
// Halt PICC and re-select it so DumpToSerial doesn't get confused
|
|
mfrc522.PICC_HaltA();
|
|
if ( ! mfrc522.PICC_IsNewCardPresent() || ! mfrc522.PICC_ReadCardSerial() ) {
|
|
return;
|
|
}
|
|
|
|
// Dump the new memory contents
|
|
Serial.println(F("New UID and contents:"));
|
|
mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
|
|
|
|
delay(2000);
|
|
}
|