122 lines
4.4 KiB
C++
122 lines
4.4 KiB
C++
/*
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* MFRC522 - Library to use ARDUINO RFID MODULE KIT 13.56 MHZ WITH TAGS SPI W AND R BY COOQROBOT.
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* The library file MFRC522.h has a wealth of useful info. Please read it.
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* The functions are documented in MFRC522.cpp.
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*
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* Based on code Dr.Leong ( WWW.B2CQSHOP.COM )
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* Created by Miguel Balboa (circuitito.com), Jan, 2012.
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* Rewritten by Søren Thing Andersen (access.thing.dk), fall of 2013 (Translation to English, refactored, comments, anti collision, cascade levels.)
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* Extended by Tom Clement with functionality to write to sector 0 of UID changeable Mifare cards.
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*
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* Released into the public domain.
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*
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* This sample shows how to set the UID on a UID changeable MIFARE card.
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*
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----------------------------------------------------------------------------- empty_skull
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- Aggiunti pin per arduino Mega
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- Scritto semplice codice per la scrittura e lettura
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- add pin configuration for arduino mega
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- write simple read/write Code for new entry user
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http://mac86project.altervista.org/
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----------------------------------------------------------------------------- Nicola Coppola
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* Pin layout should be as follows:
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* Signal Pin Pin Pin
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* Arduino Uno Arduino Mega MFRC522 board
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* ------------------------------------------------------------
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* Reset 9 5 RST
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* SPI SS 10 53 SDA
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* SPI MOSI 11 51 MOSI
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* SPI MISO 12 50 MISO
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* SPI SCK 13 52 SCK
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*
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* The reader can be found on eBay for around 5 dollars. Search for "mf-rc522" on ebay.com.
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*/
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#include <SPI.h>
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#include <MFRC522.h>
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/* Set your new UID here! */
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#define NEW_UID {0xDE, 0xAD, 0xBE, 0xEF}
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#define SS_PIN 10
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#define RST_PIN 9
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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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SPI.begin(); // Init SPI bus
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mfrc522.PCD_Init(); // Init MFRC522 card
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Serial.println("Warning: this example overwrites the UID of your UID changeable card, 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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// Setting the UID can be as simple as this:
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//void loop() {
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// byte newUid[] = NEW_UID;
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// if ( mfrc522.MIFARE_SetUid(newUid, (byte)4, true) ) {
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// Serial.println("Wrote new UID to card.");
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// }
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// delay(1000);
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//}
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// But of course this is a more proper approach
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void loop() {
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// Look for new cards, and select one if present
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if ( ! mfrc522.PICC_IsNewCardPresent() || ! mfrc522.PICC_ReadCardSerial() ) {
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delay(50);
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return;
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}
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// Now a card is selected. The UID and SAK is in mfrc522.uid.
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// Dump UID
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Serial.print("Card UID:");
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for (byte i = 0; i < mfrc522.uid.size; i++) {
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Serial.print(mfrc522.uid.uidByte[i] < 0x10 ? " 0" : " ");
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Serial.print(mfrc522.uid.uidByte[i], HEX);
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}
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Serial.println();
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// Dump PICC type
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// byte piccType = mfrc522.PICC_GetType(mfrc522.uid.sak);
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// Serial.print("PICC type: ");
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// Serial.print(mfrc522.PICC_GetTypeName(piccType));
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// Serial.print(" (SAK ");
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// Serial.print(mfrc522.uid.sak);
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// Serial.print(")\r\n");
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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("This sample only works with MIFARE Classic cards.");
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// return;
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// }
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// Set new UID
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byte newUid[] = NEW_UID;
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if ( mfrc522.MIFARE_SetUid(newUid, (byte)4, true) ) {
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Serial.println("Wrote new UID to card.");
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}
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// Halt PICC and re-select it so DumpToSerial doesn't get confused
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mfrc522.PICC_HaltA();
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if ( ! mfrc522.PICC_IsNewCardPresent() || ! mfrc522.PICC_ReadCardSerial() ) {
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return;
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}
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// Dump the new memory contents
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Serial.println("New UID and contents:");
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mfrc522.PICC_DumpToSerial(&(mfrc522.uid));
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delay(2000);
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}
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