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1 parent aed248b commit fa033227081cf491bde9a049a4a060d730acf178 K.Townsend committed May 15, 2012
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+/**************************************************************************/
+/*!
+ @file Adafruit_NFCShield_I2C.h
+ @author Adafruit Industries
+ @license BSD (see license.txt)
+
+ This is a library for the Adafruit PN532 NFC/RFID shield
+ This library works with the Adafruit NFC breakout
+ ----> https://www.adafruit.com/products/364
+
+ Check out the links above for our tutorials and wiring diagrams
+ These chips use I2C to communicate
+
+ Adafruit invests time and resources providing this open source code,
+ please support Adafruit and open-source hardware by purchasing
+ products from Adafruit!
+
+ @section HISTORY
+
+ v1.3 - Modified to work with I2C
+
+ v1.1 - Added full command list
+ - Added 'verbose' mode flag to constructor to toggle debug output
+ - Changed readPassiveTargetID() to return variable length values
+
+*/
+/**************************************************************************/
+
+#if ARDUINO >= 100
+ #include "Arduino.h"
+#else
+ #include "WProgram.h"
+#endif
+
+#include <Wire.h>
+
+#define PN532_PREAMBLE (0x00)
+#define PN532_STARTCODE1 (0x00)
+#define PN532_STARTCODE2 (0xFF)
+#define PN532_POSTAMBLE (0x00)
+
+#define PN532_HOSTTOPN532 (0xD4)
+
+// PN532 Commands
+#define PN532_COMMAND_DIAGNOSE (0x00)
+#define PN532_COMMAND_GETFIRMWAREVERSION (0x02)
+#define PN532_COMMAND_GETGENERALSTATUS (0x04)
+#define PN532_COMMAND_READREGISTER (0x06)
+#define PN532_COMMAND_WRITEREGISTER (0x08)
+#define PN532_COMMAND_READGPIO (0x0C)
+#define PN532_COMMAND_WRITEGPIO (0x0E)
+#define PN532_COMMAND_SETSERIALBAUDRATE (0x10)
+#define PN532_COMMAND_SETPARAMETERS (0x12)
+#define PN532_COMMAND_SAMCONFIGURATION (0x14)
+#define PN532_COMMAND_POWERDOWN (0x16)
+#define PN532_COMMAND_RFCONFIGURATION (0x32)
+#define PN532_COMMAND_RFREGULATIONTEST (0x58)
+#define PN532_COMMAND_INJUMPFORDEP (0x56)
+#define PN532_COMMAND_INJUMPFORPSL (0x46)
+#define PN532_COMMAND_INLISTPASSIVETARGET (0x4A)
+#define PN532_COMMAND_INATR (0x50)
+#define PN532_COMMAND_INPSL (0x4E)
+#define PN532_COMMAND_INDATAEXCHANGE (0x40)
+#define PN532_COMMAND_INCOMMUNICATETHRU (0x42)
+#define PN532_COMMAND_INDESELECT (0x44)
+#define PN532_COMMAND_INRELEASE (0x52)
+#define PN532_COMMAND_INSELECT (0x54)
+#define PN532_COMMAND_INAUTOPOLL (0x60)
+#define PN532_COMMAND_TGINITASTARGET (0x8C)
+#define PN532_COMMAND_TGSETGENERALBYTES (0x92)
+#define PN532_COMMAND_TGGETDATA (0x86)
+#define PN532_COMMAND_TGSETDATA (0x8E)
+#define PN532_COMMAND_TGSETMETADATA (0x94)
+#define PN532_COMMAND_TGGETINITIATORCOMMAND (0x88)
+#define PN532_COMMAND_TGRESPONSETOINITIATOR (0x90)
+#define PN532_COMMAND_TGGETTARGETSTATUS (0x8A)
+
+#define PN532_WAKEUP (0x55)
+
+#define PN532_SPI_STATREAD (0x02)
+#define PN532_SPI_DATAWRITE (0x01)
+#define PN532_SPI_DATAREAD (0x03)
+#define PN532_SPI_READY (0x01)
+
+#define PN532_I2C_ADDRESS (0x48 >> 1)
+#define PN532_I2C_READBIT (0x01)
+#define PN532_I2C_BUSY (0x00)
+#define PN532_I2C_READY (0x01)
+#define PN532_I2C_READYTIMEOUT (20)
+
+#define PN532_MIFARE_ISO14443A (0x00)
+
+// Mifare Commands
+#define MIFARE_CMD_AUTH_A (0x60)
+#define MIFARE_CMD_AUTH_B (0x61)
+#define MIFARE_CMD_READ (0x30)
+#define MIFARE_CMD_WRITE (0xA0)
+#define MIFARE_CMD_TRANSFER (0xB0)
+#define MIFARE_CMD_DECREMENT (0xC0)
+#define MIFARE_CMD_INCREMENT (0xC1)
+#define MIFARE_CMD_STORE (0xC2)
+
+// Prefixes for NDEF Records (to identify record type)
+#define NDEF_URIPREFIX_NONE (0x00)
+#define NDEF_URIPREFIX_HTTP_WWWDOT (0x01)
+#define NDEF_URIPREFIX_HTTPS_WWWDOT (0x02)
+#define NDEF_URIPREFIX_HTTP (0x03)
+#define NDEF_URIPREFIX_HTTPS (0x04)
+#define NDEF_URIPREFIX_TEL (0x05)
+#define NDEF_URIPREFIX_MAILTO (0x06)
+#define NDEF_URIPREFIX_FTP_ANONAT (0x07)
+#define NDEF_URIPREFIX_FTP_FTPDOT (0x08)
+#define NDEF_URIPREFIX_FTPS (0x09)
+#define NDEF_URIPREFIX_SFTP (0x0A)
+#define NDEF_URIPREFIX_SMB (0x0B)
+#define NDEF_URIPREFIX_NFS (0x0C)
+#define NDEF_URIPREFIX_FTP (0x0D)
+#define NDEF_URIPREFIX_DAV (0x0E)
+#define NDEF_URIPREFIX_NEWS (0x0F)
+#define NDEF_URIPREFIX_TELNET (0x10)
+#define NDEF_URIPREFIX_IMAP (0x11)
+#define NDEF_URIPREFIX_RTSP (0x12)
+#define NDEF_URIPREFIX_URN (0x13)
+#define NDEF_URIPREFIX_POP (0x14)
+#define NDEF_URIPREFIX_SIP (0x15)
+#define NDEF_URIPREFIX_SIPS (0x16)
+#define NDEF_URIPREFIX_TFTP (0x17)
+#define NDEF_URIPREFIX_BTSPP (0x18)
+#define NDEF_URIPREFIX_BTL2CAP (0x19)
+#define NDEF_URIPREFIX_BTGOEP (0x1A)
+#define NDEF_URIPREFIX_TCPOBEX (0x1B)
+#define NDEF_URIPREFIX_IRDAOBEX (0x1C)
+#define NDEF_URIPREFIX_FILE (0x1D)
+#define NDEF_URIPREFIX_URN_EPC_ID (0x1E)
+#define NDEF_URIPREFIX_URN_EPC_TAG (0x1F)
+#define NDEF_URIPREFIX_URN_EPC_PAT (0x20)
+#define NDEF_URIPREFIX_URN_EPC_RAW (0x21)
+#define NDEF_URIPREFIX_URN_EPC (0x22)
+#define NDEF_URIPREFIX_URN_NFC (0x23)
+
+#define PN532_GPIO_VALIDATIONBIT (0x80)
+#define PN532_GPIO_P30 (0)
+#define PN532_GPIO_P31 (1)
+#define PN532_GPIO_P32 (2)
+#define PN532_GPIO_P33 (3)
+#define PN532_GPIO_P34 (4)
+#define PN532_GPIO_P35 (5)
+
+class Adafruit_NFCShield_I2C{
+ public:
+ Adafruit_NFCShield_I2C(uint8_t irq, uint8_t reset);
+ void begin(void);
+
+ // Generic PN532 functions
+ boolean SAMConfig(void);
+ uint32_t getFirmwareVersion(void);
+ boolean sendCommandCheckAck(uint8_t *cmd, uint8_t cmdlen, uint16_t timeout = 1000);
+ boolean writeGPIO(uint8_t pinstate);
+ uint8_t readGPIO(void);
+
+ // ISO14443A functions
+ boolean readPassiveTargetID(uint8_t cardbaudrate, uint8_t * uid, uint8_t * uidLength);
+
+ // Mifare Classic functions
+ bool mifareclassic_IsFirstBlock (uint32_t uiBlock);
+ bool mifareclassic_IsTrailerBlock (uint32_t uiBlock);
+ uint8_t mifareclassic_AuthenticateBlock (uint8_t * uid, uint8_t uidLen, uint32_t blockNumber, uint8_t keyNumber, uint8_t * keyData);
+ uint8_t mifareclassic_ReadDataBlock (uint8_t blockNumber, uint8_t * data);
+ uint8_t mifareclassic_WriteDataBlock (uint8_t blockNumber, uint8_t * data);
+ uint8_t mifareclassic_FormatNDEF (void);
+ uint8_t mifareclassic_WriteNDEFURI (uint8_t sectorNumber, uint8_t uriIdentifier, const char * url);
+
+ // Mifare Ultralight functions
+ uint8_t mifareultralight_ReadPage (uint8_t page, uint8_t * buffer);
+
+ // Help functions to display formatted text
+ static void PrintHex(const byte * data, const uint32_t numBytes);
+ static void PrintHexChar(const byte * pbtData, const uint32_t numBytes);
+
+ private:
+ uint8_t _irq, _reset;
+ uint8_t _uid[7]; // ISO14443A uid
+ uint8_t _uidLen; // uid len
+ uint8_t _key[6]; // Mifare Classic key
+
+ boolean readackframe(void);
+ uint8_t wirereadstatus(void);
+ void wirereaddata(uint8_t* buff, uint8_t n);
+ void wiresendcommand(uint8_t* cmd, uint8_t cmdlen);
+};
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-Adafruit_NFCShield_I2C
-======================
-
-I2C Driver for Adafruit's PN532-based NFC Shield
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+This is a library for the Adafruit PN532 NFC/RFID breakout boards
+This library works with the Adafruit NFC breakout and shield
+ ----> https://www.adafruit.com/products/364
+ ----> https://www.adafruit.com/products/789
+
+Check out the links above for our tutorials and wiring diagrams
+These chips use SPI or I2C to communicate
+
+Adafruit invests time and resources providing this open source code,
+please support Adafruit and open-source hardware by purchasing
+products from Adafruit!
+
+Written by Limor Fried/Ladyada & Kevin Townsend for Adafruit Industries.
+BSD license, check license.txt for more information
+All text above must be included in any redistribution
+
+To download. click the DOWNLOADS button in the top right corner, rename
+the uncompressed folder Adafruit_NFCShield_I2C. Check that the
+Adafruit_NFCShield_I2C folder contains Adafruit_NFCShield_I2C.cpp and
+Adafruit_NFCShield_I2C.h
+
+Place the Adafruit_NFCShield_I2C library folder your
+<arduinosketchfolder>/libraries/ folder. You may need to create the
+libraries subfolder if its your first library. Restart the IDE.
@@ -0,0 +1,80 @@
+/**************************************************************************/
+/*!
+ @file iso14443a_uid.pde
+ @author Adafruit Industries
+ @license BSD (see license.txt)
+
+ This example will attempt to connect to an ISO14443A
+ card or tag and retrieve some basic information about it
+ that can be used to determine what type of card it is.
+
+ Note that you need the baud rate to be 115200 because we need to print
+ out the data and read from the card at the same time!
+
+ This is an example sketch for the Adafruit PN532 NFC/RFID breakout boards
+ This library works with the Adafruit NFC breakout
+ ----> https://www.adafruit.com/products/364
+
+ Check out the links above for our tutorials and wiring diagrams
+ These chips use I2C to communicate, 4 pins required to interface:
+ SDA (I2C Data) and SCL (I2C Clock), IRQ and RESET (any digital line)
+
+ Adafruit invests time and resources providing this open source code,
+ please support Adafruit and open-source hardware by purchasing
+ products from Adafruit!
+*/
+/**************************************************************************/
+#include <Wire.h>
+#include <Adafruit_NFCShield_I2C.h>
+
+#define IRQ (2)
+#define RESET (3) // Not connected by default on the NFC Shield
+
+Adafruit_NFCShield_I2C nfc(IRQ, RESET);
+
+void setup(void) {
+ 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();
+
+ Serial.println("Waiting for an ISO14443A card");
+}
+
+void loop(void) {
+ boolean 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[0], &uidLength);
+
+ if (success) {
+ Serial.println("Found a card!");
+ Serial.print("UID Length: ");Serial.print(uidLength, DEC);Serial.println(" bytes");
+ Serial.print("UID Value: ");
+ for (uint8_t i=0; i < uidLength; i++)
+ {
+ Serial.print(" 0x");Serial.print(uid[i], HEX);
+ }
+ Serial.println("");
+ // Wait 1 second before continuing
+ delay(1000);
+ }
+}
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