@ -0,0 +1,472 @@
/**
* MFRC522_I2C.h - Library to use ARDUINO RFID MODULE KIT 13.56 MHZ WITH TAGS
*I2C BY AROZCAN MFRC522_I2C.h - Based on ARDUINO RFID MODULE KIT 13.56 MHZ WITH
*TAGS SPI Library BY COOQROBOT. Based on code Dr.Leong ( WWW.B2CQSHOP.COM )
* Created by Miguel Balboa (circuitito.com), Jan, 2012.
* Rewritten by Søren Thing Andersen (access.thing.dk), fall of 2013
*(Translation to English, refactored, comments, anti collision, cascade
*levels.) Extended by Tom Clement with functionality to write to sector 0 of
*UID changeable Mifare cards. Extended by Ahmet Remzi Ozcan with I2C
*functionality. Author: arozcan @
*https://github.com/arozcan/MFRC522-I2C-Library Released into the public
*domain.
*
* Please read this file for an overview and then MFRC522.cpp for comments on
*the specific functions. Search for "mf-rc522" on ebay.com to purchase the
*MF-RC522 board.
*
* There are three hardware components involved:
* 1) The micro controller: An Arduino
* 2) The PCD (short for Proximity Coupling Device): NXP MFRC522 Contactless
*Reader IC 3) The PICC (short for Proximity Integrated Circuit Card): A card or
*tag using the ISO 14443A interface, eg Mifare or NTAG203.
*
* The microcontroller and card reader uses I2C for communication.
* The protocol is described in the MFRC522 datasheet:
*http://www.nxp.com/documents/data_sheet/MFRC522.pdf
*
* The card reader and the tags communicate using a 13.56MHz electromagnetic
*field. The protocol is defined in ISO/IEC 14443-3 Identification cards --
*Contactless integrated circuit cards -- Proximity cards -- Part 3:
*Initialization and anticollision". A free version of the final draft can be
*found at http://wg8.de/wg8n1496_17n3613_Ballot_FCD14443-3.pdf Details are
*found in chapter 6, Type A –
*
* If only the PICC UID is wanted, the above documents has all the needed
*information. To read and write from MIFARE PICCs, the MIFARE protocol is used
*after the PICC has been selected. The MIFARE Classic chips and protocol is
*described in the datasheets: 1K:
*http://www.nxp.com/documents/data_sheet/MF1S503x.pdf 4K:
*http://www.nxp.com/documents/data_sheet/MF1S703x.pdf Mini:
*http://www.idcardmarket.com/download/mifare_S20_datasheet.pdf The MIFARE
*Ultralight chip and protocol is described in the datasheets: Ultralight:
*http://www.nxp.com/documents/data_sheet/MF0ICU1.pdf Ultralight C:
*http://www.nxp.com/documents/short_data_sheet/MF0ICU2_SDS.pdf
*
* MIFARE Classic 1K (MF1S503x):
* Has 16 sectors * 4 blocks/sector * 16 bytes/block = 1024 bytes.
* The blocks are numbered 0-63.
* Block 3 in each sector is the Sector Trailer. See
*http://www.nxp.com/documents/data_sheet/MF1S503x.pdf sections 8.6 and 8.7:
* Bytes 0-5: Key A
* Bytes 6-8: Access Bits
* Bytes 9: User data
* Bytes 10-15: Key B (or user data)
* Block 0 is read-only manufacturer data.
* To access a block, an authentication using a key from the block's sector
*must be performed first. Example: To read from block 10, first authenticate
*using a key from sector 3 (blocks 8-11). All keys are set to FFFFFFFFFFFFh at
*chip delivery. Warning: Please read section 8.7 "Memory Access". It includes
*this text: if the PICC detects a format violation the whole sector is
*irreversibly blocked. To use a block in "value block" mode (for
*Increment/Decrement operations) you need to change the sector trailer. Use
*PICC_SetAccessBits() to calculate the bit patterns. MIFARE Classic 4K
*(MF1S703x): Has (32 sectors * 4 blocks/sector + 8 sectors * 16 blocks/sector)
** 16 bytes/block = 4096 bytes. The blocks are numbered 0-255. The last block
*in each sector is the Sector Trailer like above. MIFARE Classic Mini (MF1 IC
*S20): Has 5 sectors * 4 blocks/sector * 16 bytes/block = 320 bytes. The blocks
*are numbered 0-19. The last block in each sector is the Sector Trailer like
*above.
*
* MIFARE Ultralight (MF0ICU1):
* Has 16 pages of 4 bytes = 64 bytes.
* Pages 0 + 1 is used for the 7-byte UID.
* Page 2 contains the last check digit for the UID, one byte manufacturer
*internal data, and the lock bytes (see
*http://www.nxp.com/documents/data_sheet/MF0ICU1.pdf section 8.5.2) Page 3 is
*OTP, One Time Programmable bits. Once set to 1 they cannot revert to 0. Pages
*4-15 are read/write unless blocked by the lock bytes in page 2. MIFARE
*Ultralight C (MF0ICU2): Has 48 pages of 4 bytes = 192 bytes. Pages 0 + 1 is
*used for the 7-byte UID. Page 2 contains the last check digit for the UID, one
*byte manufacturer internal data, and the lock bytes (see
*http://www.nxp.com/documents/data_sheet/MF0ICU1.pdf section 8.5.2) Page 3 is
*OTP, One Time Programmable bits. Once set to 1 they cannot revert to 0. Pages
*4-39 are read/write unless blocked by the lock bytes in page 2. Page 40 Lock
*bytes Page 41 16 bit one way counter Pages 42-43 Authentication configuration
* Pages 44-47 Authentication key
*/
# ifndef MFRC522_h
# define MFRC522_h
# include <Arduino.h>
# include <Wire.h>
// Firmware data for self-test
// Reference values based on firmware version
// Hint: if needed, you can remove unused self-test data to save flash memory
//
// Version 0.0 (0x90)
// Philips Semiconductors; Preliminary Specification Revision 2.0 - 01 August
// 2005; 16.1 Sefttest
const byte MFRC522_firmware_referenceV0_0 [ ] PROGMEM = {
0x00 , 0x87 , 0x98 , 0x0f , 0x49 , 0xFF , 0x07 , 0x19 , 0xBF , 0x22 , 0x30 ,
0x49 , 0x59 , 0x63 , 0xAD , 0xCA , 0x7F , 0xE3 , 0x4E , 0x03 , 0x5C , 0x4E ,
0x49 , 0x50 , 0x47 , 0x9A , 0x37 , 0x61 , 0xE7 , 0xE2 , 0xC6 , 0x2E , 0x75 ,
0x5A , 0xED , 0x04 , 0x3D , 0x02 , 0x4B , 0x78 , 0x32 , 0xFF , 0x58 , 0x3B ,
0x7C , 0xE9 , 0x00 , 0x94 , 0xB4 , 0x4A , 0x59 , 0x5B , 0xFD , 0xC9 , 0x29 ,
0xDF , 0x35 , 0x96 , 0x98 , 0x9E , 0x4F , 0x30 , 0x32 , 0x8D } ;
// Version 1.0 (0x91)
// NXP Semiconductors; Rev. 3.8 - 17 September 2014; 16.1.1 Self test
const byte MFRC522_firmware_referenceV1_0 [ ] PROGMEM = {
0x00 , 0xC6 , 0x37 , 0xD5 , 0x32 , 0xB7 , 0x57 , 0x5C , 0xC2 , 0xD8 , 0x7C ,
0x4D , 0xD9 , 0x70 , 0xC7 , 0x73 , 0x10 , 0xE6 , 0xD2 , 0xAA , 0x5E , 0xA1 ,
0x3E , 0x5A , 0x14 , 0xAF , 0x30 , 0x61 , 0xC9 , 0x70 , 0xDB , 0x2E , 0x64 ,
0x22 , 0x72 , 0xB5 , 0xBD , 0x65 , 0xF4 , 0xEC , 0x22 , 0xBC , 0xD3 , 0x72 ,
0x35 , 0xCD , 0xAA , 0x41 , 0x1F , 0xA7 , 0xF3 , 0x53 , 0x14 , 0xDE , 0x7E ,
0x02 , 0xD9 , 0x0F , 0xB5 , 0x5E , 0x25 , 0x1D , 0x29 , 0x79 } ;
// Version 2.0 (0x92)
// NXP Semiconductors; Rev. 3.8 - 17 September 2014; 16.1.1 Self test
const byte MFRC522_firmware_referenceV2_0 [ ] PROGMEM = {
0x00 , 0xEB , 0x66 , 0xBA , 0x57 , 0xBF , 0x23 , 0x95 , 0xD0 , 0xE3 , 0x0D ,
0x3D , 0x27 , 0x89 , 0x5C , 0xDE , 0x9D , 0x3B , 0xA7 , 0x00 , 0x21 , 0x5B ,
0x89 , 0x82 , 0x51 , 0x3A , 0xEB , 0x02 , 0x0C , 0xA5 , 0x00 , 0x49 , 0x7C ,
0x84 , 0x4D , 0xB3 , 0xCC , 0xD2 , 0x1B , 0x81 , 0x5D , 0x48 , 0x76 , 0xD5 ,
0x71 , 0x61 , 0x21 , 0xA9 , 0x86 , 0x96 , 0x83 , 0x38 , 0xCF , 0x9D , 0x5B ,
0x6D , 0xDC , 0x15 , 0xBA , 0x3E , 0x7D , 0x95 , 0x3B , 0x2F } ;
// Clone
// Fudan Semiconductor FM17522 (0x88)
const byte FM17522_firmware_reference [ ] PROGMEM = {
0x00 , 0xD6 , 0x78 , 0x8C , 0xE2 , 0xAA , 0x0C , 0x18 , 0x2A , 0xB8 , 0x7A ,
0x7F , 0xD3 , 0x6A , 0xCF , 0x0B , 0xB1 , 0x37 , 0x63 , 0x4B , 0x69 , 0xAE ,
0x91 , 0xC7 , 0xC3 , 0x97 , 0xAE , 0x77 , 0xF4 , 0x37 , 0xD7 , 0x9B , 0x7C ,
0xF5 , 0x3C , 0x11 , 0x8F , 0x15 , 0xC3 , 0xD7 , 0xC1 , 0x5B , 0x00 , 0x2A ,
0xD0 , 0x75 , 0xDE , 0x9E , 0x51 , 0x64 , 0xAB , 0x3E , 0xE9 , 0x15 , 0xB5 ,
0xAB , 0x56 , 0x9A , 0x98 , 0x82 , 0x26 , 0xEA , 0x2A , 0x62 } ;
class MFRC522 {
public :
// MFRC522 registers. Described in chapter 9 of the datasheet.
enum PCD_Register {
// Page 0: Command and status
// 0x00 // reserved for future use
CommandReg = 0x01 , // starts and stops command execution
ComIEnReg = 0x02 , // enable and disable interrupt request control bits
DivIEnReg = 0x03 , // enable and disable interrupt request control bits
ComIrqReg = 0x04 , // interrupt request bits
DivIrqReg = 0x05 , // interrupt request bits
ErrorReg = 0x06 , // error bits showing the error status of the last
// command executed
Status1Reg = 0x07 , // communication status bits
Status2Reg = 0x08 , // receiver and transmitter status bits
FIFODataReg = 0x09 , // input and output of 64 byte FIFO buffer
FIFOLevelReg = 0x0A , // number of bytes stored in the FIFO buffer
WaterLevelReg = 0x0B , // level for FIFO underflow and overflow warning
ControlReg = 0x0C , // miscellaneous control registers
BitFramingReg = 0x0D , // adjustments for bit-oriented frames
CollReg = 0x0E , // bit position of the first bit-collision detected on
// the RF interface
// 0x0F // reserved for future use
// Page 1: Command
// 0x10 // reserved for future use
ModeReg = 0x11 , // defines general modes for transmitting and receiving
TxModeReg = 0x12 , // defines transmission data rate and framing
RxModeReg = 0x13 , // defines reception data rate and framing
TxControlReg = 0x14 , // controls the logical behavior of the antenna
// driver pins TX1 and TX2
TxASKReg = 0x15 , // controls the setting of the transmission modulation
TxSelReg = 0x16 , // selects the internal sources for the antenna driver
RxSelReg = 0x17 , // selects internal receiver settings
RxThresholdReg = 0x18 , // selects thresholds for the bit decoder
DemodReg = 0x19 , // defines demodulator settings
// 0x1A // reserved for future use
// 0x1B // reserved for future use
MfTxReg =
0x1C , // controls some MIFARE communication transmit parameters
MfRxReg =
0x1D , // controls some MIFARE communication receive parameters
// 0x1E // reserved for future use
SerialSpeedReg =
0x1F , // selects the speed of the serial UART interface
// Page 2: Configuration
// 0x20 // reserved for future use
CRCResultRegH =
0x21 , // shows the MSB and LSB values of the CRC calculation
CRCResultRegL = 0x22 ,
// 0x23 // reserved for future use
ModWidthReg = 0x24 , // controls the ModWidth setting?
// 0x25 // reserved for future use
RFCfgReg = 0x26 , // configures the receiver gain
GsNReg = 0x27 , // selects the conductance of the antenna driver pins
// TX1 and TX2 for modulation
CWGsPReg = 0x28 , // defines the conductance of the p-driver output
// during periods of no modulation
ModGsPReg = 0x29 , // defines the conductance of the p-driver output
// during periods of modulation
TModeReg = 0x2A , // defines settings for the internal timer
TPrescalerReg = 0x2B , // the lower 8 bits of the TPrescaler value. The
// 4 high bits are in TModeReg.
TReloadRegH = 0x2C , // defines the 16-bit timer reload value
TReloadRegL = 0x2D ,
TCounterValueRegH = 0x2E , // shows the 16-bit timer value
TCounterValueRegL = 0x2F ,
// Page 3: Test Registers
// 0x30 // reserved for future use
TestSel1Reg = 0x31 , // general test signal configuration
TestSel2Reg = 0x32 , // general test signal configuration
TestPinEnReg = 0x33 , // enables pin output driver on pins D1 to D7
TestPinValueReg = 0x34 , // defines the values for D1 to D7 when it is
// used as an I/O bus
TestBusReg = 0x35 , // shows the status of the internal test bus
AutoTestReg = 0x36 , // controls the digital self test
VersionReg = 0x37 , // shows the software version
AnalogTestReg = 0x38 , // controls the pins AUX1 and AUX2
TestDAC1Reg = 0x39 , // defines the test value for TestDAC1
TestDAC2Reg = 0x3A , // defines the test value for TestDAC2
TestADCReg = 0x3B // shows the value of ADC I and Q channels
// 0x3C // reserved for production tests
// 0x3D // reserved for production tests
// 0x3E // reserved for production tests
// 0x3F // reserved for production tests
} ;
// MFRC522 commands. Described in chapter 10 of the datasheet.
enum PCD_Command {
PCD_Idle = 0x00 , // no action, cancels current command execution
PCD_Mem = 0x01 , // stores 25 bytes into the internal buffer
PCD_GenerateRandomID = 0x02 , // generates a 10-byte random ID number
PCD_CalcCRC =
0x03 , // activates the CRC coprocessor or performs a self test
PCD_Transmit = 0x04 , // transmits data from the FIFO buffer
PCD_NoCmdChange = 0x07 , // no command change, can be used to modify the
// CommandReg register bits without affecting
// the command, for example, the PowerDown bit
PCD_Receive = 0x08 , // activates the receiver circuits
PCD_Transceive =
0x0C , // transmits data from FIFO buffer to antenna and
// automatically activates the receiver after transmission
PCD_MFAuthent =
0x0E , // performs the MIFARE standard authentication as a reader
PCD_SoftReset = 0x0F // resets the MFRC522
} ;
// MFRC522 RxGain[2:0] masks, defines the receiver's signal voltage gain
// factor (on the PCD). Described in 9.3.3.6 / table 98 of the datasheet at
// http://www.nxp.com/documents/data_sheet/MFRC522.pdf
enum PCD_RxGain {
RxGain_18dB = 0x00 < < 4 , // 000b - 18 dB, minimum
RxGain_23dB = 0x01 < < 4 , // 001b - 23 dB
RxGain_18dB_2 =
0x02 < < 4 , // 010b - 18 dB, it seems 010b is a duplicate for 000b
RxGain_23dB_2 =
0x03 < < 4 , // 011b - 23 dB, it seems 011b is a duplicate for 001b
RxGain_33dB = 0x04 < < 4 , // 100b - 33 dB, average, and typical default
RxGain_38dB = 0x05 < < 4 , // 101b - 38 dB
RxGain_43dB = 0x06 < < 4 , // 110b - 43 dB
RxGain_48dB = 0x07 < < 4 , // 111b - 48 dB, maximum
RxGain_min =
0x00 < < 4 , // 000b - 18 dB, minimum, convenience for RxGain_18dB
RxGain_avg =
0x04 < < 4 , // 100b - 33 dB, average, convenience for RxGain_33dB
RxGain_max =
0x07 < < 4 // 111b - 48 dB, maximum, convenience for RxGain_48dB
} ;
// Commands sent to the PICC.
enum PICC_Command {
// The commands used by the PCD to manage communication with several
// PICCs (ISO 14443-3, Type A, section 6.4)
PICC_CMD_REQA = 0x26 , // REQuest command, Type A. Invites PICCs in
// state IDLE to go to READY and prepare for
// anticollision or selection. 7 bit frame.
PICC_CMD_WUPA =
0x52 , // Wake-UP command, Type A. Invites PICCs in state IDLE and
// HALT to go to READY(*) and prepare for anticollision or
// selection. 7 bit frame.
PICC_CMD_CT = 0x88 , // Cascade Tag. Not really a command, but used
// during anti collision.
PICC_CMD_SEL_CL1 = 0x93 , // Anti collision/Select, Cascade Level 1
PICC_CMD_SEL_CL2 = 0x95 , // Anti collision/Select, Cascade Level 2
PICC_CMD_SEL_CL3 = 0x97 , // Anti collision/Select, Cascade Level 3
PICC_CMD_HLTA = 0x50 , // HaLT command, Type A. Instructs an ACTIVE PICC
// to go to state HALT.
// The commands used for MIFARE Classic (from
// http://www.nxp.com/documents/data_sheet/MF1S503x.pdf, Section 9)
// Use PCD_MFAuthent to authenticate access to a sector, then use these
// commands to read/write/modify the blocks on the sector.
// The read/write commands can also be used for MIFARE Ultralight.
PICC_CMD_MF_AUTH_KEY_A = 0x60 , // Perform authentication with Key A
PICC_CMD_MF_AUTH_KEY_B = 0x61 , // Perform authentication with Key B
PICC_CMD_MF_READ =
0x30 , // Reads one 16 byte block from the authenticated sector of
// the PICC. Also used for MIFARE Ultralight.
PICC_CMD_MF_WRITE =
0xA0 , // Writes one 16 byte block to the authenticated sector of
// the PICC. Called "COMPATIBILITY WRITE" for MIFARE
// Ultralight.
PICC_CMD_MF_DECREMENT =
0xC0 , // Decrements the contents of a block and stores the result
// in the internal data register.
PICC_CMD_MF_INCREMENT =
0xC1 , // Increments the contents of a block and stores the result
// in the internal data register.
PICC_CMD_MF_RESTORE = 0xC2 , // Reads the contents of a block into the
// internal data register.
PICC_CMD_MF_TRANSFER = 0xB0 , // Writes the contents of the internal
// data register to a block.
// The commands used for MIFARE Ultralight (from
// http://www.nxp.com/documents/data_sheet/MF0ICU1.pdf, Section 8.6)
// The PICC_CMD_MF_READ and PICC_CMD_MF_WRITE can also be used for
// MIFARE Ultralight.
PICC_CMD_UL_WRITE = 0xA2 // Writes one 4 byte page to the PICC.
} ;
// MIFARE constants that does not fit anywhere else
enum MIFARE_Misc {
MF_ACK = 0xA , // The MIFARE Classic uses a 4 bit ACK/NAK. Any other
// value than 0xA is NAK.
MF_KEY_SIZE = 6 // A Mifare Crypto1 key is 6 bytes.
} ;
// PICC types we can detect. Remember to update PICC_GetTypeName() if you
// add more.
enum PICC_Type {
PICC_TYPE_UNKNOWN = 0 ,
PICC_TYPE_ISO_14443_4 = 1 , // PICC compliant with ISO/IEC 14443-4
PICC_TYPE_ISO_18092 = 2 , // PICC compliant with ISO/IEC 18092 (NFC)
PICC_TYPE_MIFARE_MINI = 3 , // MIFARE Classic protocol, 320 bytes
PICC_TYPE_MIFARE_1K = 4 , // MIFARE Classic protocol, 1KB
PICC_TYPE_MIFARE_4K = 5 , // MIFARE Classic protocol, 4KB
PICC_TYPE_MIFARE_UL = 6 , // MIFARE Ultralight or Ultralight C
PICC_TYPE_MIFARE_PLUS = 7 , // MIFARE Plus
PICC_TYPE_TNP3XXX = 8 , // Only mentioned in NXP AN 10833 MIFARE Type
// Identification Procedure
PICC_TYPE_NOT_COMPLETE = 255 // SAK indicates UID is not complete.
} ;
// Return codes from the functions in this class. Remember to update
// GetStatusCodeName() if you add more.
enum StatusCode {
STATUS_OK = 1 , // Success
STATUS_ERROR = 2 , // Error in communication
STATUS_COLLISION = 3 , // Collission detected
STATUS_TIMEOUT = 4 , // Timeout in communication.
STATUS_NO_ROOM = 5 , // A buffer is not big enough.
STATUS_INTERNAL_ERROR =
6 , // Internal error in the code. Should not happen ;-)
STATUS_INVALID = 7 , // Invalid argument.
STATUS_CRC_WRONG = 8 , // The CRC_A does not match
STATUS_MIFARE_NACK = 9 // A MIFARE PICC responded with NAK.
} ;
// A struct used for passing the UID of a PICC.
typedef struct {
byte size ; // Number of bytes in the UID. 4, 7 or 10.
byte uidByte [ 10 ] ;
byte sak ; // The SAK (Select acknowledge) byte returned from the PICC
// after successful selection.
} Uid ;
// A struct used for passing a MIFARE Crypto1 key
typedef struct {
byte keyByte [ MF_KEY_SIZE ] ;
} MIFARE_Key ;
// Member variables
Uid uid ; // Used by PICC_ReadCardSerial().
// Size of the MFRC522 FIFO
static const byte FIFO_SIZE = 64 ; // The FIFO is 64 bytes.
/////////////////////////////////////////////////////////////////////////////////////
// Functions for setting up the Arduino
/////////////////////////////////////////////////////////////////////////////////////
MFRC522 ( byte chipAddress ) ;
/////////////////////////////////////////////////////////////////////////////////////
// Basic interface functions for communicating with the MFRC522
/////////////////////////////////////////////////////////////////////////////////////
void PCD_WriteRegister ( byte reg , byte value ) ;
void PCD_WriteRegister ( byte reg , byte count , byte * values ) ;
byte PCD_ReadRegister ( byte reg ) ;
void PCD_ReadRegister ( byte reg , byte count , byte * values , byte rxAlign = 0 ) ;
void setBitMask ( unsigned char reg , unsigned char mask ) ;
void PCD_SetRegisterBitMask ( byte reg , byte mask ) ;
void PCD_ClearRegisterBitMask ( byte reg , byte mask ) ;
byte PCD_CalculateCRC ( byte * data , byte length , byte * result ) ;
/////////////////////////////////////////////////////////////////////////////////////
// Functions for manipulating the MFRC522
/////////////////////////////////////////////////////////////////////////////////////
void PCD_Init ( ) ;
void PCD_Reset ( ) ;
void PCD_AntennaOn ( ) ;
void PCD_AntennaOff ( ) ;
byte PCD_GetAntennaGain ( ) ;
void PCD_SetAntennaGain ( byte mask ) ;
bool PCD_PerformSelfTest ( ) ;
/////////////////////////////////////////////////////////////////////////////////////
// Functions for communicating with PICCs
/////////////////////////////////////////////////////////////////////////////////////
byte PCD_TransceiveData ( byte * sendData , byte sendLen , byte * backData ,
byte * backLen , byte * validBits = NULL ,
byte rxAlign = 0 , bool checkCRC = false ) ;
byte PCD_CommunicateWithPICC ( byte command , byte waitIRq , byte * sendData ,
byte sendLen , byte * backData = NULL ,
byte * backLen = NULL , byte * validBits = NULL ,
byte rxAlign = 0 , bool checkCRC = false ) ;
byte PICC_RequestA ( byte * bufferATQA , byte * bufferSize ) ;
byte PICC_WakeupA ( byte * bufferATQA , byte * bufferSize ) ;
byte PICC_REQA_or_WUPA ( byte command , byte * bufferATQA , byte * bufferSize ) ;
byte PICC_Select ( Uid * uid , byte validBits = 0 ) ;
byte PICC_HaltA ( ) ;
/////////////////////////////////////////////////////////////////////////////////////
// Functions for communicating with MIFARE PICCs
/////////////////////////////////////////////////////////////////////////////////////
byte PCD_Authenticate ( byte command , byte blockAddr , MIFARE_Key * key ,
Uid * uid ) ;
void PCD_StopCrypto1 ( ) ;
byte MIFARE_Read ( byte blockAddr , byte * buffer , byte * bufferSize ) ;
byte MIFARE_Write ( byte blockAddr , byte * buffer , byte bufferSize ) ;
byte MIFARE_Decrement ( byte blockAddr , long delta ) ;
byte MIFARE_Increment ( byte blockAddr , long delta ) ;
byte MIFARE_Restore ( byte blockAddr ) ;
byte MIFARE_Transfer ( byte blockAddr ) ;
byte MIFARE_Ultralight_Write ( byte page , byte * buffer , byte bufferSize ) ;
byte MIFARE_GetValue ( byte blockAddr , long * value ) ;
byte MIFARE_SetValue ( byte blockAddr , long value ) ;
/////////////////////////////////////////////////////////////////////////////////////
// Support functions
/////////////////////////////////////////////////////////////////////////////////////
byte PCD_MIFARE_Transceive ( byte * sendData , byte sendLen ,
bool acceptTimeout = false ) ;
// old function used too much memory, now name moved to flash; if you need
// char, copy from flash to memory
// const char *GetStatusCodeName(byte code);
const __FlashStringHelper * GetStatusCodeName ( byte code ) ;
byte PICC_GetType ( byte sak ) ;
// old function used too much memory, now name moved to flash; if you need
// char, copy from flash to memory
// const char *PICC_GetTypeName(byte type);
const __FlashStringHelper * PICC_GetTypeName ( byte type ) ;
void PICC_DumpToSerial ( Uid * uid ) ;
void PICC_DumpMifareClassicToSerial ( Uid * uid , byte piccType ,
MIFARE_Key * key ) ;
void PICC_DumpMifareClassicSectorToSerial ( Uid * uid , MIFARE_Key * key ,
byte sector ) ;
void PICC_DumpMifareUltralightToSerial ( ) ;
void MIFARE_SetAccessBits ( byte * accessBitBuffer , byte g0 , byte g1 , byte g2 ,
byte g3 ) ;
bool MIFARE_OpenUidBackdoor ( bool logErrors ) ;
bool MIFARE_SetUid ( byte * newUid , byte uidSize , bool logErrors ) ;
bool MIFARE_UnbrickUidSector ( bool logErrors ) ;
/////////////////////////////////////////////////////////////////////////////////////
// Convenience functions - does not add extra functionality
/////////////////////////////////////////////////////////////////////////////////////
bool PICC_IsNewCardPresent ( ) ;
bool PICC_ReadCardSerial ( ) ;
private :
byte _chipAddress ;
byte _resetPowerDownPin ; // Arduino pin connected to MFRC522's reset and
// power down input (Pin 6, NRSTPD, active low)
byte MIFARE_TwoStepHelper ( byte command , byte blockAddr , long data ) ;
} ;
# endif
