Martin Olejar
MFRC522 example project for FRDM
Diff: MFRC522.h
- Revision:
- 0:1d9c7c0b5015
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+++ b/MFRC522.h Sat Dec 14 21:41:08 2013 +0000
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+/**
+ * MFRC522.h - Library to use ARDUINO RFID MODULE KIT 13.56 MHZ WITH TAGS SPI W AND R BY COOQROBOT.
+ * Based on code Dr.Leong ( WWW.B2CQSHOP.COM )
+ * Created by Miguel Balboa (circuitito.com), Jan, 2012.
+ * Rewritten by S�ren Thing Andersen (access.thing.dk), fall of 2013 (Translation to English, refactored, comments, anti collision, cascade levels.)
+ * Ported by Martin Olejar to mbed, Dec, 2013
+ *
+ * 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 SPI 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 � Initialization and anticollision.
+ *
+ * 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 chech 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 = 64 bytes.
+ * Pages 0 + 1 is used for the 7-byte UID.
+ * Page 2 contains the last chech 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 <string>
+#include "mbed.h"
+
+class MFRC522 {
+public:
+
+ // MFRC522 registers. Described in chapter 9 of the datasheet.
+ // When using SPI all addresses are shifted one bit left in the "SPI address byte" (section 8.1.2.3)
+ enum PCD_Register {
+ // Page 0: Command and status
+ // 0x00 // reserved for future use
+ CommandReg = 0x01 << 1, // starts and stops command execution
+ ComIEnReg = 0x02 << 1, // enable and disable interrupt request control bits
+ DivIEnReg = 0x03 << 1, // enable and disable interrupt request control bits
+ ComIrqReg = 0x04 << 1, // interrupt request bits
+ DivIrqReg = 0x05 << 1, // interrupt request bits
+ ErrorReg = 0x06 << 1, // error bits showing the error status of the last command executed
+ Status1Reg = 0x07 << 1, // communication status bits
+ Status2Reg = 0x08 << 1, // receiver and transmitter status bits
+ FIFODataReg = 0x09 << 1, // input and output of 64 byte FIFO buffer
+ FIFOLevelReg = 0x0A << 1, // number of bytes stored in the FIFO buffer
+ WaterLevelReg = 0x0B << 1, // level for FIFO underflow and overflow warning
+ ControlReg = 0x0C << 1, // miscellaneous control registers
+ BitFramingReg = 0x0D << 1, // adjustments for bit-oriented frames
+ CollReg = 0x0E << 1, // 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 << 1, // defines general modes for transmitting and receiving
+ TxModeReg = 0x12 << 1, // defines transmission data rate and framing
+ RxModeReg = 0x13 << 1, // defines reception data rate and framing
+ TxControlReg = 0x14 << 1, // controls the logical behavior of the antenna driver pins TX1 and TX2
+ TxASKReg = 0x15 << 1, // controls the setting of the transmission modulation
+ TxSelReg = 0x16 << 1, // selects the internal sources for the antenna driver
+ RxSelReg = 0x17 << 1, // selects internal receiver settings
+ RxThresholdReg = 0x18 << 1, // selects thresholds for the bit decoder
+ DemodReg = 0x19 << 1, // defines demodulator settings
+ // 0x1A // reserved for future use
+ // 0x1B // reserved for future use
+ MfTxReg = 0x1C << 1, // controls some MIFARE communication transmit parameters
+ MfRxReg = 0x1D << 1, // controls some MIFARE communication receive parameters
+ // 0x1E // reserved for future use
+ SerialSpeedReg = 0x1F << 1, // selects the speed of the serial UART interface
+
+ // Page 2: Configuration
+ // 0x20 // reserved for future use
+ CRCResultRegH = 0x21 << 1, // shows the MSB and LSB values of the CRC calculation
+ CRCResultRegL = 0x22 << 1,
+ // 0x23 // reserved for future use
+ ModWidthReg = 0x24 << 1, // controls the ModWidth setting?
+ // 0x25 // reserved for future use
+ RFCfgReg = 0x26 << 1, // configures the receiver gain
+ GsNReg = 0x27 << 1, // selects the conductance of the antenna driver pins TX1 and TX2 for modulation
+ CWGsPReg = 0x28 << 1, // defines the conductance of the p-driver output during periods of no modulation
+ ModGsPReg = 0x29 << 1, // defines the conductance of the p-driver output during periods of modulation
+ TModeReg = 0x2A << 1, // defines settings for the internal timer
+ TPrescalerReg = 0x2B << 1, // the lower 8 bits of the TPrescaler value. The 4 high bits are in TModeReg.
+ TReloadRegH = 0x2C << 1, // defines the 16-bit timer reload value
+ TReloadRegL = 0x2D << 1,
+ TCntValueRegH = 0x2E << 1, // shows the 16-bit timer value
+ TCntValueRegL = 0x2F << 1,
+
+ // Page 3:Test Registers
+ // 0x30 // reserved for future use
+ TestSel1Reg = 0x31 << 1, // general test signal configuration
+ TestSel2Reg = 0x32 << 1, // general test signal configuration
+ TestPinEnReg = 0x33 << 1, // enables pin output driver on pins D1 to D7
+ TestPinValueReg = 0x34 << 1, // defines the values for D1 to D7 when it is used as an I/O bus
+ TestBusReg = 0x35 << 1, // shows the status of the internal test bus
+ AutoTestReg = 0x36 << 1, // controls the digital self test
+ VersionReg = 0x37 << 1, // shows the software version
+ AnalogTestReg = 0x38 << 1, // controls the pins AUX1 and AUX2
+ TestDAC1Reg = 0x39 << 1, // defines the test value for TestDAC1
+ TestDAC2Reg = 0x3A << 1, // defines the test value for TestDAC2
+ TestADCReg = 0x3B << 1 // 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
+ };
+
+ // 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 1
+ PICC_CMD_SEL_CL3 = 0x97, // Anti collision/Select, Cascade Level 1
+ 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, // Collision 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 {
+ uint8_t size; // Number of bytes in the UID. 4, 7 or 10.
+ uint8_t uidByte[10];
+ uint8_t 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 {
+ uint8_t keyByte[MF_KEY_SIZE];
+ } MIFARE_Key;
+
+ // Member variables
+ Uid uid; // Used by PICC_ReadCardSerial().
+
+ // Size of the MFRC522 FIFO
+ static const uint8_t FIFO_SIZE = 64; // The FIFO is 64 bytes.
+
+ /////////////////////////////////////////////////////////////////////////////////////
+ // Functions for setting up the driver
+ /////////////////////////////////////////////////////////////////////////////////////
+ MFRC522(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset);
+
+ /////////////////////////////////////////////////////////////////////////////////////
+ // Functions for manipulating the MFRC522
+ /////////////////////////////////////////////////////////////////////////////////////
+ void PCD_Init();
+ void PCD_Reset();
+ void PCD_AntennaOn();
+
+ /////////////////////////////////////////////////////////////////////////////////////
+ // Basic interface functions for communicating with the MFRC522
+ /////////////////////////////////////////////////////////////////////////////////////
+ void PCD_WriteRegister(uint8_t reg, uint8_t value);
+ void PCD_WriteRegister(uint8_t reg, uint8_t count, uint8_t *values);
+ uint8_t PCD_ReadRegister(uint8_t reg);
+ void PCD_ReadRegister(uint8_t reg, uint8_t count, uint8_t *values, uint8_t rxAlign = 0);
+ void PCD_SetRegisterBitMask(uint8_t reg, uint8_t mask);
+ void PCD_ClearRegisterBitMask(uint8_t reg, uint8_t mask);
+ uint8_t PCD_CalculateCRC(uint8_t *data, uint8_t length, uint8_t *result);
+
+ /////////////////////////////////////////////////////////////////////////////////////
+ // Functions for communicating with PICCs
+ /////////////////////////////////////////////////////////////////////////////////////
+ uint8_t PCD_TransceiveData(uint8_t *sendData, uint8_t sendLen, uint8_t *backData, uint8_t *backLen, uint8_t *validBits = NULL, uint8_t rxAlign = 0, bool checkCRC = false);
+ uint8_t PCD_CommunicateWithPICC(uint8_t command, uint8_t waitIRq, uint8_t *sendData, uint8_t sendLen, uint8_t *backData = NULL, uint8_t *backLen = NULL, uint8_t *validBits = NULL, uint8_t rxAlign = 0, bool checkCRC = false);
+
+ uint8_t PICC_RequestA(uint8_t *bufferATQA, uint8_t *bufferSize);
+ uint8_t PICC_WakeupA(uint8_t *bufferATQA, uint8_t *bufferSize);
+ uint8_t PICC_REQA_or_WUPA(uint8_t command, uint8_t *bufferATQA, uint8_t *bufferSize);
+ uint8_t PICC_Select(Uid *uid, uint8_t validBits = 0);
+ uint8_t PICC_HaltA();
+
+ /////////////////////////////////////////////////////////////////////////////////////
+ // Functions for communicating with MIFARE PICCs
+ /////////////////////////////////////////////////////////////////////////////////////
+ uint8_t PCD_Authenticate(uint8_t command, uint8_t blockAddr, MIFARE_Key *key, Uid *uid);
+ void PCD_StopCrypto1();
+ uint8_t MIFARE_Read(uint8_t blockAddr, uint8_t *buffer, uint8_t *bufferSize);
+ uint8_t MIFARE_Write(uint8_t blockAddr, uint8_t *buffer, uint8_t bufferSize);
+ uint8_t MIFARE_Decrement(uint8_t blockAddr, uint32_t delta);
+ uint8_t MIFARE_Increment(uint8_t blockAddr, uint32_t delta);
+ uint8_t MIFARE_Restore(uint8_t blockAddr);
+ uint8_t MIFARE_Transfer(uint8_t blockAddr);
+ uint8_t MIFARE_Ultralight_Write(uint8_t page, uint8_t *buffer, uint8_t bufferSize);
+
+ /////////////////////////////////////////////////////////////////////////////////////
+ // Support functions
+ /////////////////////////////////////////////////////////////////////////////////////
+ uint8_t PCD_MIFARE_Transceive(uint8_t *sendData, uint8_t sendLen, bool acceptTimeout = false);
+ uint8_t PICC_GetType(uint8_t sak);
+ std::string PICC_GetTypeName(uint8_t type);
+ std::string GetStatusCodeName(uint8_t code);
+ void MIFARE_SetAccessBits(uint8_t *accessBitBuffer, uint8_t g0, uint8_t g1, uint8_t g2, uint8_t g3);
+
+ /////////////////////////////////////////////////////////////////////////////////////
+ // Convenience functions - does not add extra functionality
+ /////////////////////////////////////////////////////////////////////////////////////
+ bool PICC_IsNewCardPresent();
+ bool PICC_ReadCardSerial();
+
+private:
+ SPI m_SPI;
+ DigitalOut m_CS;
+ DigitalOut m_RESET;
+
+ uint8_t MIFARE_TwoStepHelper(uint8_t command, uint8_t blockAddr, uint32_t data);
+};
+
+#endif