File content as of revision 1:c492babe8dc3:

/*
 * NfcTag.h
 * a library to use NFC Tag
 * 
 * Copyright (c) 2014 seeed technology inc.
 * Website    : www.seeed.cc
 * Author     : lawliet zou
 * Create Time: March 2014
 * Change Log :
 *
 * The MIT License (MIT)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

//#include "arduino.h"
//#include <Wire.h>
#include <mbed.h>  

#ifndef __NFC_TAG_H__
#define __NFC_TAG_H__


#define EEPROM_ADDR_E2_DISABLE  0x53 //disable E2
#define EEPROM_ADDR_E2_ENABLE   (0x53|0x04) //enable E2 
#define EEPROM_I2C_LENGTH   8192

#define PASSWORD_LENGTH 4
#define SECTOR_SECURITY_STATUS_BASE_ADDR    0x800 //2048

#define LOCK_PROTECT_BIT        BIT0
#define WRITE_READ_PROTECT_BIT  BIT1
#define PASSWORD_CTRL_BIT       BIT3

#define I2C_PASSWORD_ADDR   2304
#define RF_PASSWORD_1_ADDR  2308
#define RF_PASSWORD_2_ADDR  2312
#define RF_PASSWORD_3_ADDR  2316
#define DSFID_ADDR          2320    //1 uint8_t
#define AFI_ADDR            2321    //1 uint8_t
#define RFU_ADDR            2322    //2 uint8_ts
#define UID_ADDR            2324    //8 uint8_ts
#define UID_LENGTH          8
#define MEMORY_VOLUME_ADDR  2332    //3 uint8_ts
#define IC_NUMBER_ADDR      2335    //1 uint8_t


enum AccessMode{
    USER_MODE = 0x0,    // offer simple read/write access right
    ROOT_MODE = 0x1,    // offer password change access right
};

enum SectorAccessRight{
    //      **********************************
    //      *  submit passWd *   no submit   * 
    //b2,b1 *  Read * Write  *  Read * Write *
    // 00   *    1       1        1      0   *
    // 01   *    1       1        1      1   *
    // 10   *    1       1        0      0   *
    // 11   *    0       1        0      0   *
    //      **********************************
    Access_1110 = 0,
    Access_1111 = 1,
    Access_1100 = 2,
    Access_0111 = 3,
};

enum SectorSelectPassWd{
    //00 => no passWd protect
    //01 => passWd 1
    //10 => passWd 2
    //11 => passwd 3
    noPassWd = 0,
    passWd_1 = 1,
    passWd_2 = 2,
    passWd_3 = 3,
};

class NfcTag
{
public:
   /* NfcTag(AccessMode mode = USER_MODE){
        if(mode == USER_MODE){
            eeAddr = EEPROM_ADDR_E2_DISABLE;
        }else{
            eeAddr = EEPROM_ADDR_E2_ENABLE;
        }
    };*/
  // constructor
 NfcTag(PinName sda,PinName scl,uint8_t address,AccessMode mode);  
    ~NfcTag();
    
   // void init();
    void submitPassWd(uint8_t* passWd);
    void writePassWd(uint8_t* passWd);
    void sectorProtectConfig(unsigned int sectorNumber, bool protectEnable, SectorAccessRight accessRight = Access_1110, SectorSelectPassWd passWd = noPassWd);
    void clearSectorProtect(void);
    void sectorWriteSockConfig(unsigned int sectorNumber, bool sockEnable);
    uint8_t getDSFID();
    uint8_t getAFI();
    uint16_t getRFU();
    uint8_t getUID(uint8_t* buf);
    uint32_t getMemoryVolume();
    uint8_t getICNumber();
    void clearMemory();
    void writeuint8_t(unsigned int address, uint8_t data);
    void writeuint8_ts(unsigned int address, uint8_t* buf, unsigned int len);
    uint8_t readuint8_t(unsigned int address);
    void readuint8_ts(unsigned int address, uint8_t* buf, unsigned int len);
    
private:
    I2C             m_I2C;
    int eeAddr;
    void _EEPROM_Write_uint8_t(unsigned int address, uint8_t data);
    void _EEPROM_Write_uint8_ts(unsigned int address, uint8_t* buf, unsigned int len);
    uint8_t _EEPROM_Read_uint8_t(unsigned int address);
    unsigned int _EEPROM_Read_uint8_ts(unsigned int address, uint8_t* buf, unsigned int len);
    uint8_t _address;   // I2C Module Address
};
#endif