/**************************************************************************/ /*! @file readMifare.pde @author Adafruit Industries @license BSD (see license.txt) @modified by Salvador Mendoza (salmg.net) for Electronic Cats' NFC Copy Cat This example will wait for any ISO14443A card or tag, and depending on the size of the UID will attempt to read from it. If the card has a 4-byte UID it is probably a Mifare Classic card, and the following steps are taken: - Authenticate block 4 (the first block of Sector 1) using the default KEYA of 0XFF 0XFF 0XFF 0XFF 0XFF 0XFF - If authentication succeeds, we can then read any of the 4 blocks in that sector (though only block 4 is read here) If the card has a 7-byte UID it is probably a Mifare Ultralight card, and the 4 byte pages can be read directly. Page 4 is read by default since this is the first 'general- purpose' page on the tags. This is an example sketch for the NFC Copy Cat board This library works with the NFC Copy Cat board ----> https://www.electroniccats.com/ Check out the links above for our tutorials and wiring diagrams These chips use SPI or I2C to communicate. Electronic Cats invests time and resources providing this open source code, please support Electronic Cats and open-source hardware by purchasing products from Electronic Cats! */ /**************************************************************************/ #include #include #include // If using the breakout with SPI, define the pins for SPI communication. #define PN532_SCK (17) #define PN532_MOSI (16) #define PN532_SS (18) #define PN532_MISO (19) #define L1 (14) //LED1 #define L2 (5) //LED2 #define L3 (4) //LED3 #define MPIN (28) //MagsSpoof Button #define NPIN (27) //NFC Button // Use this line for a breakout with a hardware SPI connection. Note that // the PN532 SCK, MOSI, and MISO pins need to be connected to the Arduino's // hardware SPI SCK, MOSI, and MISO pins. On an Arduino Uno these are // SCK = 13, MOSI = 11, MISO = 12. The SS line can be any digital IO pin. //Adafruit_PN532 nfc(PN532_SS); // Or use this line for a breakout or shield with an I2C connection: //Adafruit_PN532 nfc(PN532_IRQ, PN532_RESET); // Use this line for a breakout with a SPI connection: Adafruit_PN532 nfc(PN532_SCK, PN532_MISO, PN532_MOSI, PN532_SS); #if defined(ARDUINO_ARCH_SAMD) // for Zero, output on USB Serial console, remove line below if using programming port to program the Zero! // also change #define in Adafruit_PN532.cpp library file #define Serial SerialUSB #endif void setup(void) { #ifndef ESP8266 while (!Serial); // for Leonardo/Micro/Zero #endif pinMode(L2, OUTPUT); pinMode(L1, OUTPUT); pinMode(NPIN, INPUT_PULLUP); Serial.begin(115200); Serial.println("Hello!"); nfc.begin(); uint32_t versiondata = nfc.getFirmwareVersion(); if (! versiondata) { Serial.print("Didn't find PN53x board"); while (1); // halt } // Got ok data, print it out! Serial.print("Found chip PN5"); Serial.println((versiondata>>24) & 0xFF, HEX); Serial.print("Firmware ver. "); Serial.print((versiondata>>16) & 0xFF, DEC); Serial.print('.'); Serial.println((versiondata>>8) & 0xFF, DEC); // configure board to read RFID tags nfc.SAMConfig(); // blink to show we started up blink(L1, 200, 2); blink(L2, 200, 2); blink(L3, 200, 2); } void blink(int pin, int msdelay, int times){ for (int i = 0; i < times; i++){ digitalWrite(pin, HIGH); delay(msdelay); digitalWrite(pin, LOW); delay(msdelay); } } void readmifare(void) { Serial.println("Waiting for an ISO14443A Card ..."); uint8_t success; uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 }; // Buffer to store the returned UID uint8_t uidLength; // Length of the UID (4 or 7 bytes depending on ISO14443A card type) // Wait for an ISO14443A type cards (Mifare, etc.). When one is found // 'uid' will be populated with the UID, and uidLength will indicate // if the uid is 4 bytes (Mifare Classic) or 7 bytes (Mifare Ultralight) success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength); if (success) { // Display some basic information about the card Serial.println("Found an ISO14443A card"); Serial.print(" UID Length: ");Serial.print(uidLength, DEC);Serial.println(" bytes"); Serial.print(" UID Value: "); nfc.PrintHex(uid, uidLength); Serial.println(""); if (uidLength == 4) { // We probably have a Mifare Classic card ... Serial.println("Seems to be a Mifare Classic card (4 byte UID)"); // Now we need to try to authenticate it for read/write access // Try with the factory default KeyA: 0xFF 0xFF 0xFF 0xFF 0xFF 0xFF Serial.println("Trying to authenticate block 4 with default KEYA value"); uint8_t keya[6] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; // Start with block 4 (the first block of sector 1) since sector 0 // contains the manufacturer data and it's probably better just // to leave it alone unless you know what you're doing success = nfc.mifareclassic_AuthenticateBlock(uid, uidLength, 4, 0, keya); if (success) { Serial.println("Sector 1 (Blocks 4..7) has been authenticated"); uint8_t data[16]; // If you want to write something to block 4 to test with, uncomment // the following line and this text should be read back in a minute //memcpy(data, (const uint8_t[]){ 'a', 'd', 'a', 'f', 'r', 'u', 'i', 't', '.', 'c', 'o', 'm', 0, 0, 0, 0 }, sizeof data); // success = nfc.mifareclassic_WriteDataBlock (4, data); // Try to read the contents of block 4 success = nfc.mifareclassic_ReadDataBlock(4, data); if (success) { // Data seems to have been read ... spit it out Serial.println("Reading Block 4:"); nfc.PrintHexChar(data, 16); Serial.println(""); // Wait a bit before reading the card again delay(1000); } else { Serial.println("Ooops ... unable to read the requested block. Try another key?"); } } else { Serial.println("Ooops ... authentication failed: Try another key?"); } } if (uidLength == 7) { // We probably have a Mifare Ultralight card ... Serial.println("Seems to be a Mifare Ultralight tag (7 byte UID)"); // Try to read the first general-purpose user page (#4) Serial.println("Reading page 4"); uint8_t data[32]; success = nfc.mifareultralight_ReadPage (4, data); if (success) { // Data seems to have been read ... spit it out nfc.PrintHexChar(data, 4); Serial.println(""); // Wait a bit before reading the card again delay(1000); } else { Serial.println("Ooops ... unable to read the requested page!?"); } } } } void nfcbutton(){ if (digitalRead(NPIN) == 0){ blink(L2, 150, 1); Serial.println("Activating NFC..."); readmifare(); blink(L2, 100, 3); } } void loop(){ nfcbutton(); }