Anyela Prado / MFRC522

rfid

Dependents:   ETRFID

MFRC522.h@0:c735c66e37d3, 2015-12-08 (annotated)

Committer:
Amyrctdp
Date:
Tue Dec 08 20:48:53 2015 +0000
Revision:
0:c735c66e37d3
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
Amyrctdp 0:c735c66e37d3 1 /**
Amyrctdp 0:c735c66e37d3 2 * MFRC522.h - Library to use ARDUINO RFID MODULE KIT 13.56 MHZ WITH TAGS SPI W AND R BY COOQROBOT.
Amyrctdp 0:c735c66e37d3 3 * Based on code Dr.Leong ( WWW.B2CQSHOP.COM )
Amyrctdp 0:c735c66e37d3 4 * Created by Miguel Balboa (circuitito.com), Jan, 2012.
Amyrctdp 0:c735c66e37d3 5 * Rewritten by Soren Thing Andersen (access.thing.dk), fall of 2013 (Translation to English, refactored, comments, anti collision, cascade levels.)
Amyrctdp 0:c735c66e37d3 6 * Ported to mbed by Martin Olejar, Dec, 2013
Amyrctdp 0:c735c66e37d3 7 *
Amyrctdp 0:c735c66e37d3 8 * Please read this file for an overview and then MFRC522.cpp for comments on the specific functions.
Amyrctdp 0:c735c66e37d3 9 * Search for "mf-rc522" on ebay.com to purchase the MF-RC522 board.
Amyrctdp 0:c735c66e37d3 10 *
Amyrctdp 0:c735c66e37d3 11 * There are three hardware components involved:
Amyrctdp 0:c735c66e37d3 12 * 1) The micro controller: An Arduino
Amyrctdp 0:c735c66e37d3 13 * 2) The PCD (short for Proximity Coupling Device): NXP MFRC522 Contactless Reader IC
Amyrctdp 0:c735c66e37d3 14 * 3) The PICC (short for Proximity Integrated Circuit Card): A card or tag using the ISO 14443A interface, eg Mifare or NTAG203.
Amyrctdp 0:c735c66e37d3 15 *
Amyrctdp 0:c735c66e37d3 16 * The microcontroller and card reader uses SPI for communication.
Amyrctdp 0:c735c66e37d3 17 * The protocol is described in the MFRC522 datasheet: http://www.nxp.com/documents/data_sheet/MFRC522.pdf
Amyrctdp 0:c735c66e37d3 18 *
Amyrctdp 0:c735c66e37d3 19 * The card reader and the tags communicate using a 13.56MHz electromagnetic field.
Amyrctdp 0:c735c66e37d3 20 * The protocol is defined in ISO/IEC 14443-3 Identification cards -- Contactless integrated circuit cards -- Proximity cards -- Part 3: Initialization and anticollision".
Amyrctdp 0:c735c66e37d3 21 * A free version of the final draft can be found at http://wg8.de/wg8n1496_17n3613_Ballot_FCD14443-3.pdf
Amyrctdp 0:c735c66e37d3 22 * Details are found in chapter 6, Type A: Initialization and anticollision.
Amyrctdp 0:c735c66e37d3 23 *
Amyrctdp 0:c735c66e37d3 24 * If only the PICC UID is wanted, the above documents has all the needed information.
Amyrctdp 0:c735c66e37d3 25 * To read and write from MIFARE PICCs, the MIFARE protocol is used after the PICC has been selected.
Amyrctdp 0:c735c66e37d3 26 * The MIFARE Classic chips and protocol is described in the datasheets:
Amyrctdp 0:c735c66e37d3 27 * 1K: http://www.nxp.com/documents/data_sheet/MF1S503x.pdf
Amyrctdp 0:c735c66e37d3 28 * 4K: http://www.nxp.com/documents/data_sheet/MF1S703x.pdf
Amyrctdp 0:c735c66e37d3 29 * Mini: http://www.idcardmarket.com/download/mifare_S20_datasheet.pdf
Amyrctdp 0:c735c66e37d3 30 * The MIFARE Ultralight chip and protocol is described in the datasheets:
Amyrctdp 0:c735c66e37d3 31 * Ultralight: http://www.nxp.com/documents/data_sheet/MF0ICU1.pdf
Amyrctdp 0:c735c66e37d3 32 * Ultralight C: http://www.nxp.com/documents/short_data_sheet/MF0ICU2_SDS.pdf
Amyrctdp 0:c735c66e37d3 33 *
Amyrctdp 0:c735c66e37d3 34 * MIFARE Classic 1K (MF1S503x):
Amyrctdp 0:c735c66e37d3 35 * Has 16 sectors * 4 blocks/sector * 16 bytes/block = 1024 bytes.
Amyrctdp 0:c735c66e37d3 36 * The blocks are numbered 0-63.
Amyrctdp 0:c735c66e37d3 37 * 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:
Amyrctdp 0:c735c66e37d3 38 * Bytes 0-5: Key A
Amyrctdp 0:c735c66e37d3 39 * Bytes 6-8: Access Bits
Amyrctdp 0:c735c66e37d3 40 * Bytes 9: User data
Amyrctdp 0:c735c66e37d3 41 * Bytes 10-15: Key B (or user data)
Amyrctdp 0:c735c66e37d3 42 * Block 0 is read only manufacturer data.
Amyrctdp 0:c735c66e37d3 43 * To access a block, an authentication using a key from the block's sector must be performed first.
Amyrctdp 0:c735c66e37d3 44 * Example: To read from block 10, first authenticate using a key from sector 3 (blocks 8-11).
Amyrctdp 0:c735c66e37d3 45 * All keys are set to FFFFFFFFFFFFh at chip delivery.
Amyrctdp 0:c735c66e37d3 46 * 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.
Amyrctdp 0:c735c66e37d3 47 * 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.
Amyrctdp 0:c735c66e37d3 48 * MIFARE Classic 4K (MF1S703x):
Amyrctdp 0:c735c66e37d3 49 * Has (32 sectors * 4 blocks/sector + 8 sectors * 16 blocks/sector) * 16 bytes/block = 4096 bytes.
Amyrctdp 0:c735c66e37d3 50 * The blocks are numbered 0-255.
Amyrctdp 0:c735c66e37d3 51 * The last block in each sector is the Sector Trailer like above.
Amyrctdp 0:c735c66e37d3 52 * MIFARE Classic Mini (MF1 IC S20):
Amyrctdp 0:c735c66e37d3 53 * Has 5 sectors * 4 blocks/sector * 16 bytes/block = 320 bytes.
Amyrctdp 0:c735c66e37d3 54 * The blocks are numbered 0-19.
Amyrctdp 0:c735c66e37d3 55 * The last block in each sector is the Sector Trailer like above.
Amyrctdp 0:c735c66e37d3 56 *
Amyrctdp 0:c735c66e37d3 57 * MIFARE Ultralight (MF0ICU1):
Amyrctdp 0:c735c66e37d3 58 * Has 16 pages of 4 bytes = 64 bytes.
Amyrctdp 0:c735c66e37d3 59 * Pages 0 + 1 is used for the 7-byte UID.
Amyrctdp 0:c735c66e37d3 60 * 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)
Amyrctdp 0:c735c66e37d3 61 * Page 3 is OTP, One Time Programmable bits. Once set to 1 they cannot revert to 0.
Amyrctdp 0:c735c66e37d3 62 * Pages 4-15 are read/write unless blocked by the lock bytes in page 2.
Amyrctdp 0:c735c66e37d3 63 * MIFARE Ultralight C (MF0ICU2):
Amyrctdp 0:c735c66e37d3 64 * Has 48 pages of 4 bytes = 64 bytes.
Amyrctdp 0:c735c66e37d3 65 * Pages 0 + 1 is used for the 7-byte UID.
Amyrctdp 0:c735c66e37d3 66 * 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)
Amyrctdp 0:c735c66e37d3 67 * Page 3 is OTP, One Time Programmable bits. Once set to 1 they cannot revert to 0.
Amyrctdp 0:c735c66e37d3 68 * Pages 4-39 are read/write unless blocked by the lock bytes in page 2.
Amyrctdp 0:c735c66e37d3 69 * Page 40 Lock bytes
Amyrctdp 0:c735c66e37d3 70 * Page 41 16 bit one way counter
Amyrctdp 0:c735c66e37d3 71 * Pages 42-43 Authentication configuration
Amyrctdp 0:c735c66e37d3 72 * Pages 44-47 Authentication key
Amyrctdp 0:c735c66e37d3 73 */
Amyrctdp 0:c735c66e37d3 74 #ifndef MFRC522_h
Amyrctdp 0:c735c66e37d3 75 #define MFRC522_h
Amyrctdp 0:c735c66e37d3 76
Amyrctdp 0:c735c66e37d3 77 #include "mbed.h"
Amyrctdp 0:c735c66e37d3 78
Amyrctdp 0:c735c66e37d3 79 /**
Amyrctdp 0:c735c66e37d3 80 * MFRC522 example
Amyrctdp 0:c735c66e37d3 81 *
Amyrctdp 0:c735c66e37d3 82 * @code
Amyrctdp 0:c735c66e37d3 83 * #include "mbed.h"
Amyrctdp 0:c735c66e37d3 84 * #include "MFRC522.h"
Amyrctdp 0:c735c66e37d3 85 *
Amyrctdp 0:c735c66e37d3 86 * //KL25Z Pins for MFRC522 SPI interface
Amyrctdp 0:c735c66e37d3 87 * #define SPI_MOSI PTC6
Amyrctdp 0:c735c66e37d3 88 * #define SPI_MISO PTC7
Amyrctdp 0:c735c66e37d3 89 * #define SPI_SCLK PTC5
Amyrctdp 0:c735c66e37d3 90 * #define SPI_CS PTC4
Amyrctdp 0:c735c66e37d3 91 * // KL25Z Pin for MFRC522 reset
Amyrctdp 0:c735c66e37d3 92 * #define MF_RESET PTC3
Amyrctdp 0:c735c66e37d3 93 * // KL25Z Pins for Debug UART port
Amyrctdp 0:c735c66e37d3 94 * #define UART_RX PTA1
Amyrctdp 0:c735c66e37d3 95 * #define UART_TX PTA2
Amyrctdp 0:c735c66e37d3 96 *
Amyrctdp 0:c735c66e37d3 97 * DigitalOut LedRed (LED_RED);
Amyrctdp 0:c735c66e37d3 98 * DigitalOut LedGreen (LED_GREEN);
Amyrctdp 0:c735c66e37d3 99 *
Amyrctdp 0:c735c66e37d3 100 * Serial DebugUART(UART_TX, UART_RX);
Amyrctdp 0:c735c66e37d3 101 * MFRC522 RfChip (SPI_MOSI, SPI_MISO, SPI_SCLK, SPI_CS, MF_RESET);
Amyrctdp 0:c735c66e37d3 102 *
Amyrctdp 0:c735c66e37d3 103 * int main(void) {
Amyrctdp 0:c735c66e37d3 104 * // Set debug UART speed
Amyrctdp 0:c735c66e37d3 105 * DebugUART.baud(115200);
Amyrctdp 0:c735c66e37d3 106 *
Amyrctdp 0:c735c66e37d3 107 * // Init. RC522 Chip
Amyrctdp 0:c735c66e37d3 108 * RfChip.PCD_Init();
Amyrctdp 0:c735c66e37d3 109 *
Amyrctdp 0:c735c66e37d3 110 * while (true) {
Amyrctdp 0:c735c66e37d3 111 * LedRed = 1;
Amyrctdp 0:c735c66e37d3 112 * LedGreen = 1;
Amyrctdp 0:c735c66e37d3 113 *
Amyrctdp 0:c735c66e37d3 114 * // Look for new cards
Amyrctdp 0:c735c66e37d3 115 * if ( ! RfChip.PICC_IsNewCardPresent())
Amyrctdp 0:c735c66e37d3 116 * {
Amyrctdp 0:c735c66e37d3 117 * wait_ms(500);
Amyrctdp 0:c735c66e37d3 118 * continue;
Amyrctdp 0:c735c66e37d3 119 * }
Amyrctdp 0:c735c66e37d3 120 *
Amyrctdp 0:c735c66e37d3 121 * LedRed = 0;
Amyrctdp 0:c735c66e37d3 122 *
Amyrctdp 0:c735c66e37d3 123 * // Select one of the cards
Amyrctdp 0:c735c66e37d3 124 * if ( ! RfChip.PICC_ReadCardSerial())
Amyrctdp 0:c735c66e37d3 125 * {
Amyrctdp 0:c735c66e37d3 126 * wait_ms(500);
Amyrctdp 0:c735c66e37d3 127 * continue;
Amyrctdp 0:c735c66e37d3 128 * }
Amyrctdp 0:c735c66e37d3 129 *
Amyrctdp 0:c735c66e37d3 130 * LedRed = 1;
Amyrctdp 0:c735c66e37d3 131 * LedGreen = 0;
Amyrctdp 0:c735c66e37d3 132 *
Amyrctdp 0:c735c66e37d3 133 * // Print Card UID
Amyrctdp 0:c735c66e37d3 134 * printf("Card UID: ");
Amyrctdp 0:c735c66e37d3 135 * for (uint8_t i = 0; i < RfChip.uid.size; i++)
Amyrctdp 0:c735c66e37d3 136 * {
Amyrctdp 0:c735c66e37d3 137 * printf(" %X02", RfChip.uid.uidByte[i]);
Amyrctdp 0:c735c66e37d3 138 * }
Amyrctdp 0:c735c66e37d3 139 * printf("\n\r");
Amyrctdp 0:c735c66e37d3 140 *
Amyrctdp 0:c735c66e37d3 141 * // Print Card type
Amyrctdp 0:c735c66e37d3 142 * uint8_t piccType = RfChip.PICC_GetType(RfChip.uid.sak);
Amyrctdp 0:c735c66e37d3 143 * printf("PICC Type: %s \n\r", RfChip.PICC_GetTypeName(piccType));
Amyrctdp 0:c735c66e37d3 144 * wait_ms(1000);
Amyrctdp 0:c735c66e37d3 145 * }
Amyrctdp 0:c735c66e37d3 146 * }
Amyrctdp 0:c735c66e37d3 147 * @endcode
Amyrctdp 0:c735c66e37d3 148 */
Amyrctdp 0:c735c66e37d3 149
Amyrctdp 0:c735c66e37d3 150 class MFRC522 {
Amyrctdp 0:c735c66e37d3 151 public:
Amyrctdp 0:c735c66e37d3 152
Amyrctdp 0:c735c66e37d3 153 /**
Amyrctdp 0:c735c66e37d3 154 * MFRC522 registers (described in chapter 9 of the datasheet).
Amyrctdp 0:c735c66e37d3 155 * When using SPI all addresses are shifted one bit left in the "SPI address byte" (section 8.1.2.3)
Amyrctdp 0:c735c66e37d3 156 */
Amyrctdp 0:c735c66e37d3 157 enum PCD_Register {
Amyrctdp 0:c735c66e37d3 158 // Page 0: Command and status
Amyrctdp 0:c735c66e37d3 159 // 0x00 // reserved for future use
Amyrctdp 0:c735c66e37d3 160 CommandReg = 0x01 << 1, // starts and stops command execution
Amyrctdp 0:c735c66e37d3 161 ComIEnReg = 0x02 << 1, // enable and disable interrupt request control bits
Amyrctdp 0:c735c66e37d3 162 DivIEnReg = 0x03 << 1, // enable and disable interrupt request control bits
Amyrctdp 0:c735c66e37d3 163 ComIrqReg = 0x04 << 1, // interrupt request bits
Amyrctdp 0:c735c66e37d3 164 DivIrqReg = 0x05 << 1, // interrupt request bits
Amyrctdp 0:c735c66e37d3 165 ErrorReg = 0x06 << 1, // error bits showing the error status of the last command executed
Amyrctdp 0:c735c66e37d3 166 Status1Reg = 0x07 << 1, // communication status bits
Amyrctdp 0:c735c66e37d3 167 Status2Reg = 0x08 << 1, // receiver and transmitter status bits
Amyrctdp 0:c735c66e37d3 168 FIFODataReg = 0x09 << 1, // input and output of 64 byte FIFO buffer
Amyrctdp 0:c735c66e37d3 169 FIFOLevelReg = 0x0A << 1, // number of bytes stored in the FIFO buffer
Amyrctdp 0:c735c66e37d3 170 WaterLevelReg = 0x0B << 1, // level for FIFO underflow and overflow warning
Amyrctdp 0:c735c66e37d3 171 ControlReg = 0x0C << 1, // miscellaneous control registers
Amyrctdp 0:c735c66e37d3 172 BitFramingReg = 0x0D << 1, // adjustments for bit-oriented frames
Amyrctdp 0:c735c66e37d3 173 CollReg = 0x0E << 1, // bit position of the first bit-collision detected on the RF interface
Amyrctdp 0:c735c66e37d3 174 // 0x0F // reserved for future use
Amyrctdp 0:c735c66e37d3 175
Amyrctdp 0:c735c66e37d3 176 // Page 1:Command
Amyrctdp 0:c735c66e37d3 177 // 0x10 // reserved for future use
Amyrctdp 0:c735c66e37d3 178 ModeReg = 0x11 << 1, // defines general modes for transmitting and receiving
Amyrctdp 0:c735c66e37d3 179 TxModeReg = 0x12 << 1, // defines transmission data rate and framing
Amyrctdp 0:c735c66e37d3 180 RxModeReg = 0x13 << 1, // defines reception data rate and framing
Amyrctdp 0:c735c66e37d3 181 TxControlReg = 0x14 << 1, // controls the logical behavior of the antenna driver pins TX1 and TX2
Amyrctdp 0:c735c66e37d3 182 TxASKReg = 0x15 << 1, // controls the setting of the transmission modulation
Amyrctdp 0:c735c66e37d3 183 TxSelReg = 0x16 << 1, // selects the internal sources for the antenna driver
Amyrctdp 0:c735c66e37d3 184 RxSelReg = 0x17 << 1, // selects internal receiver settings
Amyrctdp 0:c735c66e37d3 185 RxThresholdReg = 0x18 << 1, // selects thresholds for the bit decoder
Amyrctdp 0:c735c66e37d3 186 DemodReg = 0x19 << 1, // defines demodulator settings
Amyrctdp 0:c735c66e37d3 187 // 0x1A // reserved for future use
Amyrctdp 0:c735c66e37d3 188 // 0x1B // reserved for future use
Amyrctdp 0:c735c66e37d3 189 MfTxReg = 0x1C << 1, // controls some MIFARE communication transmit parameters
Amyrctdp 0:c735c66e37d3 190 MfRxReg = 0x1D << 1, // controls some MIFARE communication receive parameters
Amyrctdp 0:c735c66e37d3 191 // 0x1E // reserved for future use
Amyrctdp 0:c735c66e37d3 192 SerialSpeedReg = 0x1F << 1, // selects the speed of the serial UART interface
Amyrctdp 0:c735c66e37d3 193
Amyrctdp 0:c735c66e37d3 194 // Page 2: Configuration
Amyrctdp 0:c735c66e37d3 195 // 0x20 // reserved for future use
Amyrctdp 0:c735c66e37d3 196 CRCResultRegH = 0x21 << 1, // shows the MSB and LSB values of the CRC calculation
Amyrctdp 0:c735c66e37d3 197 CRCResultRegL = 0x22 << 1,
Amyrctdp 0:c735c66e37d3 198 // 0x23 // reserved for future use
Amyrctdp 0:c735c66e37d3 199 ModWidthReg = 0x24 << 1, // controls the ModWidth setting?
Amyrctdp 0:c735c66e37d3 200 // 0x25 // reserved for future use
Amyrctdp 0:c735c66e37d3 201 RFCfgReg = 0x26 << 1, // configures the receiver gain
Amyrctdp 0:c735c66e37d3 202 GsNReg = 0x27 << 1, // selects the conductance of the antenna driver pins TX1 and TX2 for modulation
Amyrctdp 0:c735c66e37d3 203 CWGsPReg = 0x28 << 1, // defines the conductance of the p-driver output during periods of no modulation
Amyrctdp 0:c735c66e37d3 204 ModGsPReg = 0x29 << 1, // defines the conductance of the p-driver output during periods of modulation
Amyrctdp 0:c735c66e37d3 205 TModeReg = 0x2A << 1, // defines settings for the internal timer
Amyrctdp 0:c735c66e37d3 206 TPrescalerReg = 0x2B << 1, // the lower 8 bits of the TPrescaler value. The 4 high bits are in TModeReg.
Amyrctdp 0:c735c66e37d3 207 TReloadRegH = 0x2C << 1, // defines the 16-bit timer reload value
Amyrctdp 0:c735c66e37d3 208 TReloadRegL = 0x2D << 1,
Amyrctdp 0:c735c66e37d3 209 TCntValueRegH = 0x2E << 1, // shows the 16-bit timer value
Amyrctdp 0:c735c66e37d3 210 TCntValueRegL = 0x2F << 1,
Amyrctdp 0:c735c66e37d3 211
Amyrctdp 0:c735c66e37d3 212 // Page 3:Test Registers
Amyrctdp 0:c735c66e37d3 213 // 0x30 // reserved for future use
Amyrctdp 0:c735c66e37d3 214 TestSel1Reg = 0x31 << 1, // general test signal configuration
Amyrctdp 0:c735c66e37d3 215 TestSel2Reg = 0x32 << 1, // general test signal configuration
Amyrctdp 0:c735c66e37d3 216 TestPinEnReg = 0x33 << 1, // enables pin output driver on pins D1 to D7
Amyrctdp 0:c735c66e37d3 217 TestPinValueReg = 0x34 << 1, // defines the values for D1 to D7 when it is used as an I/O bus
Amyrctdp 0:c735c66e37d3 218 TestBusReg = 0x35 << 1, // shows the status of the internal test bus
Amyrctdp 0:c735c66e37d3 219 AutoTestReg = 0x36 << 1, // controls the digital self test
Amyrctdp 0:c735c66e37d3 220 VersionReg = 0x37 << 1, // shows the software version
Amyrctdp 0:c735c66e37d3 221 AnalogTestReg = 0x38 << 1, // controls the pins AUX1 and AUX2
Amyrctdp 0:c735c66e37d3 222 TestDAC1Reg = 0x39 << 1, // defines the test value for TestDAC1
Amyrctdp 0:c735c66e37d3 223 TestDAC2Reg = 0x3A << 1, // defines the test value for TestDAC2
Amyrctdp 0:c735c66e37d3 224 TestADCReg = 0x3B << 1 // shows the value of ADC I and Q channels
Amyrctdp 0:c735c66e37d3 225 // 0x3C // reserved for production tests
Amyrctdp 0:c735c66e37d3 226 // 0x3D // reserved for production tests
Amyrctdp 0:c735c66e37d3 227 // 0x3E // reserved for production tests
Amyrctdp 0:c735c66e37d3 228 // 0x3F // reserved for production tests
Amyrctdp 0:c735c66e37d3 229 };
Amyrctdp 0:c735c66e37d3 230
Amyrctdp 0:c735c66e37d3 231 // MFRC522 commands Described in chapter 10 of the datasheet.
Amyrctdp 0:c735c66e37d3 232 enum PCD_Command {
Amyrctdp 0:c735c66e37d3 233 PCD_Idle = 0x00, // no action, cancels current command execution
Amyrctdp 0:c735c66e37d3 234 PCD_Mem = 0x01, // stores 25 bytes into the internal buffer
Amyrctdp 0:c735c66e37d3 235 PCD_GenerateRandomID = 0x02, // generates a 10-byte random ID number
Amyrctdp 0:c735c66e37d3 236 PCD_CalcCRC = 0x03, // activates the CRC coprocessor or performs a self test
Amyrctdp 0:c735c66e37d3 237 PCD_Transmit = 0x04, // transmits data from the FIFO buffer
Amyrctdp 0:c735c66e37d3 238 PCD_NoCmdChange = 0x07, // no command change, can be used to modify the CommandReg register bits without affecting the command, for example, the PowerDown bit
Amyrctdp 0:c735c66e37d3 239 PCD_Receive = 0x08, // activates the receiver circuits
Amyrctdp 0:c735c66e37d3 240 PCD_Transceive = 0x0C, // transmits data from FIFO buffer to antenna and automatically activates the receiver after transmission
Amyrctdp 0:c735c66e37d3 241 PCD_MFAuthent = 0x0E, // performs the MIFARE standard authentication as a reader
Amyrctdp 0:c735c66e37d3 242 PCD_SoftReset = 0x0F // resets the MFRC522
Amyrctdp 0:c735c66e37d3 243 };
Amyrctdp 0:c735c66e37d3 244
Amyrctdp 0:c735c66e37d3 245 // Commands sent to the PICC.
Amyrctdp 0:c735c66e37d3 246 enum PICC_Command {
Amyrctdp 0:c735c66e37d3 247 // The commands used by the PCD to manage communication with several PICCs (ISO 14443-3, Type A, section 6.4)
Amyrctdp 0:c735c66e37d3 248 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.
Amyrctdp 0:c735c66e37d3 249 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.
Amyrctdp 0:c735c66e37d3 250 PICC_CMD_CT = 0x88, // Cascade Tag. Not really a command, but used during anti collision.
Amyrctdp 0:c735c66e37d3 251 PICC_CMD_SEL_CL1 = 0x93, // Anti collision/Select, Cascade Level 1
Amyrctdp 0:c735c66e37d3 252 PICC_CMD_SEL_CL2 = 0x95, // Anti collision/Select, Cascade Level 1
Amyrctdp 0:c735c66e37d3 253 PICC_CMD_SEL_CL3 = 0x97, // Anti collision/Select, Cascade Level 1
Amyrctdp 0:c735c66e37d3 254 PICC_CMD_HLTA = 0x50, // HaLT command, Type A. Instructs an ACTIVE PICC to go to state HALT.
Amyrctdp 0:c735c66e37d3 255
Amyrctdp 0:c735c66e37d3 256 // The commands used for MIFARE Classic (from http://www.nxp.com/documents/data_sheet/MF1S503x.pdf, Section 9)
Amyrctdp 0:c735c66e37d3 257 // Use PCD_MFAuthent to authenticate access to a sector, then use these commands to read/write/modify the blocks on the sector.
Amyrctdp 0:c735c66e37d3 258 // The read/write commands can also be used for MIFARE Ultralight.
Amyrctdp 0:c735c66e37d3 259 PICC_CMD_MF_AUTH_KEY_A = 0x60, // Perform authentication with Key A
Amyrctdp 0:c735c66e37d3 260 PICC_CMD_MF_AUTH_KEY_B = 0x61, // Perform authentication with Key B
Amyrctdp 0:c735c66e37d3 261 PICC_CMD_MF_READ = 0x30, // Reads one 16 byte block from the authenticated sector of the PICC. Also used for MIFARE Ultralight.
Amyrctdp 0:c735c66e37d3 262 PICC_CMD_MF_WRITE = 0xA0, // Writes one 16 byte block to the authenticated sector of the PICC. Called "COMPATIBILITY WRITE" for MIFARE Ultralight.
Amyrctdp 0:c735c66e37d3 263 PICC_CMD_MF_DECREMENT = 0xC0, // Decrements the contents of a block and stores the result in the internal data register.
Amyrctdp 0:c735c66e37d3 264 PICC_CMD_MF_INCREMENT = 0xC1, // Increments the contents of a block and stores the result in the internal data register.
Amyrctdp 0:c735c66e37d3 265 PICC_CMD_MF_RESTORE = 0xC2, // Reads the contents of a block into the internal data register.
Amyrctdp 0:c735c66e37d3 266 PICC_CMD_MF_TRANSFER = 0xB0, // Writes the contents of the internal data register to a block.
Amyrctdp 0:c735c66e37d3 267
Amyrctdp 0:c735c66e37d3 268 // The commands used for MIFARE Ultralight (from http://www.nxp.com/documents/data_sheet/MF0ICU1.pdf, Section 8.6)
Amyrctdp 0:c735c66e37d3 269 // The PICC_CMD_MF_READ and PICC_CMD_MF_WRITE can also be used for MIFARE Ultralight.
Amyrctdp 0:c735c66e37d3 270 PICC_CMD_UL_WRITE = 0xA2 // Writes one 4 byte page to the PICC.
Amyrctdp 0:c735c66e37d3 271 };
Amyrctdp 0:c735c66e37d3 272
Amyrctdp 0:c735c66e37d3 273 // MIFARE constants that does not fit anywhere else
Amyrctdp 0:c735c66e37d3 274 enum MIFARE_Misc {
Amyrctdp 0:c735c66e37d3 275 MF_ACK = 0xA, // The MIFARE Classic uses a 4 bit ACK/NAK. Any other value than 0xA is NAK.
Amyrctdp 0:c735c66e37d3 276 MF_KEY_SIZE = 6 // A Mifare Crypto1 key is 6 bytes.
Amyrctdp 0:c735c66e37d3 277 };
Amyrctdp 0:c735c66e37d3 278
Amyrctdp 0:c735c66e37d3 279 // PICC types we can detect. Remember to update PICC_GetTypeName() if you add more.
Amyrctdp 0:c735c66e37d3 280 enum PICC_Type {
Amyrctdp 0:c735c66e37d3 281 PICC_TYPE_UNKNOWN = 0,
Amyrctdp 0:c735c66e37d3 282 PICC_TYPE_ISO_14443_4 = 1, // PICC compliant with ISO/IEC 14443-4
Amyrctdp 0:c735c66e37d3 283 PICC_TYPE_ISO_18092 = 2, // PICC compliant with ISO/IEC 18092 (NFC)
Amyrctdp 0:c735c66e37d3 284 PICC_TYPE_MIFARE_MINI = 3, // MIFARE Classic protocol, 320 bytes
Amyrctdp 0:c735c66e37d3 285 PICC_TYPE_MIFARE_1K = 4, // MIFARE Classic protocol, 1KB
Amyrctdp 0:c735c66e37d3 286 PICC_TYPE_MIFARE_4K = 5, // MIFARE Classic protocol, 4KB
Amyrctdp 0:c735c66e37d3 287 PICC_TYPE_MIFARE_UL = 6, // MIFARE Ultralight or Ultralight C
Amyrctdp 0:c735c66e37d3 288 PICC_TYPE_MIFARE_PLUS = 7, // MIFARE Plus
Amyrctdp 0:c735c66e37d3 289 PICC_TYPE_TNP3XXX = 8, // Only mentioned in NXP AN 10833 MIFARE Type Identification Procedure
Amyrctdp 0:c735c66e37d3 290 PICC_TYPE_NOT_COMPLETE = 255 // SAK indicates UID is not complete.
Amyrctdp 0:c735c66e37d3 291 };
Amyrctdp 0:c735c66e37d3 292
Amyrctdp 0:c735c66e37d3 293 // Return codes from the functions in this class. Remember to update GetStatusCodeName() if you add more.
Amyrctdp 0:c735c66e37d3 294 enum StatusCode {
Amyrctdp 0:c735c66e37d3 295 STATUS_OK = 1, // Success
Amyrctdp 0:c735c66e37d3 296 STATUS_ERROR = 2, // Error in communication
Amyrctdp 0:c735c66e37d3 297 STATUS_COLLISION = 3, // Collision detected
Amyrctdp 0:c735c66e37d3 298 STATUS_TIMEOUT = 4, // Timeout in communication.
Amyrctdp 0:c735c66e37d3 299 STATUS_NO_ROOM = 5, // A buffer is not big enough.
Amyrctdp 0:c735c66e37d3 300 STATUS_INTERNAL_ERROR = 6, // Internal error in the code. Should not happen ;-)
Amyrctdp 0:c735c66e37d3 301 STATUS_INVALID = 7, // Invalid argument.
Amyrctdp 0:c735c66e37d3 302 STATUS_CRC_WRONG = 8, // The CRC_A does not match
Amyrctdp 0:c735c66e37d3 303 STATUS_MIFARE_NACK = 9 // A MIFARE PICC responded with NAK.
Amyrctdp 0:c735c66e37d3 304 };
Amyrctdp 0:c735c66e37d3 305
Amyrctdp 0:c735c66e37d3 306 // A struct used for passing the UID of a PICC.
Amyrctdp 0:c735c66e37d3 307 typedef struct {
Amyrctdp 0:c735c66e37d3 308 uint8_t size; // Number of bytes in the UID. 4, 7 or 10.
Amyrctdp 0:c735c66e37d3 309 uint8_t uidByte[10];
Amyrctdp 0:c735c66e37d3 310 uint8_t sak; // The SAK (Select acknowledge) byte returned from the PICC after successful selection.
Amyrctdp 0:c735c66e37d3 311 } Uid;
Amyrctdp 0:c735c66e37d3 312
Amyrctdp 0:c735c66e37d3 313 // A struct used for passing a MIFARE Crypto1 key
Amyrctdp 0:c735c66e37d3 314 typedef struct {
Amyrctdp 0:c735c66e37d3 315 uint8_t keyByte[MF_KEY_SIZE];
Amyrctdp 0:c735c66e37d3 316 } MIFARE_Key;
Amyrctdp 0:c735c66e37d3 317
Amyrctdp 0:c735c66e37d3 318 // Member variables
Amyrctdp 0:c735c66e37d3 319 Uid uid; // Used by PICC_ReadCardSerial().
Amyrctdp 0:c735c66e37d3 320
Amyrctdp 0:c735c66e37d3 321 // Size of the MFRC522 FIFO
Amyrctdp 0:c735c66e37d3 322 static const uint8_t FIFO_SIZE = 64; // The FIFO is 64 bytes.
Amyrctdp 0:c735c66e37d3 323
Amyrctdp 0:c735c66e37d3 324 /**
Amyrctdp 0:c735c66e37d3 325 * MFRC522 constructor
Amyrctdp 0:c735c66e37d3 326 *
Amyrctdp 0:c735c66e37d3 327 * @param mosi SPI MOSI pin
Amyrctdp 0:c735c66e37d3 328 * @param miso SPI MISO pin
Amyrctdp 0:c735c66e37d3 329 * @param sclk SPI SCLK pin
Amyrctdp 0:c735c66e37d3 330 * @param cs SPI CS pin
Amyrctdp 0:c735c66e37d3 331 * @param reset Reset pin
Amyrctdp 0:c735c66e37d3 332 */
Amyrctdp 0:c735c66e37d3 333 MFRC522(PinName mosi, PinName miso, PinName sclk, PinName cs, PinName reset);
Amyrctdp 0:c735c66e37d3 334
Amyrctdp 0:c735c66e37d3 335 /**
Amyrctdp 0:c735c66e37d3 336 * MFRC522 destructor
Amyrctdp 0:c735c66e37d3 337 */
Amyrctdp 0:c735c66e37d3 338 ~MFRC522();
Amyrctdp 0:c735c66e37d3 339
Amyrctdp 0:c735c66e37d3 340
Amyrctdp 0:c735c66e37d3 341 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 342 //! @name Functions for manipulating the MFRC522
Amyrctdp 0:c735c66e37d3 343 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 344 //@{
Amyrctdp 0:c735c66e37d3 345
Amyrctdp 0:c735c66e37d3 346 /**
Amyrctdp 0:c735c66e37d3 347 * Initializes the MFRC522 chip.
Amyrctdp 0:c735c66e37d3 348 */
Amyrctdp 0:c735c66e37d3 349 void PCD_Init (void);
Amyrctdp 0:c735c66e37d3 350
Amyrctdp 0:c735c66e37d3 351 /**
Amyrctdp 0:c735c66e37d3 352 * Performs a soft reset on the MFRC522 chip and waits for it to be ready again.
Amyrctdp 0:c735c66e37d3 353 */
Amyrctdp 0:c735c66e37d3 354 void PCD_Reset (void);
Amyrctdp 0:c735c66e37d3 355
Amyrctdp 0:c735c66e37d3 356 /**
Amyrctdp 0:c735c66e37d3 357 * Turns the antenna on by enabling pins TX1 and TX2.
Amyrctdp 0:c735c66e37d3 358 * After a reset these pins disabled.
Amyrctdp 0:c735c66e37d3 359 */
Amyrctdp 0:c735c66e37d3 360 void PCD_AntennaOn (void);
Amyrctdp 0:c735c66e37d3 361
Amyrctdp 0:c735c66e37d3 362 /**
Amyrctdp 0:c735c66e37d3 363 * Writes a byte to the specified register in the MFRC522 chip.
Amyrctdp 0:c735c66e37d3 364 * The interface is described in the datasheet section 8.1.2.
Amyrctdp 0:c735c66e37d3 365 *
Amyrctdp 0:c735c66e37d3 366 * @param reg The register to write to. One of the PCD_Register enums.
Amyrctdp 0:c735c66e37d3 367 * @param value The value to write.
Amyrctdp 0:c735c66e37d3 368 */
Amyrctdp 0:c735c66e37d3 369 void PCD_WriteRegister (uint8_t reg, uint8_t value);
Amyrctdp 0:c735c66e37d3 370
Amyrctdp 0:c735c66e37d3 371 /**
Amyrctdp 0:c735c66e37d3 372 * Writes a number of bytes to the specified register in the MFRC522 chip.
Amyrctdp 0:c735c66e37d3 373 * The interface is described in the datasheet section 8.1.2.
Amyrctdp 0:c735c66e37d3 374 *
Amyrctdp 0:c735c66e37d3 375 * @param reg The register to write to. One of the PCD_Register enums.
Amyrctdp 0:c735c66e37d3 376 * @param count The number of bytes to write to the register
Amyrctdp 0:c735c66e37d3 377 * @param values The values to write. Byte array.
Amyrctdp 0:c735c66e37d3 378 */
Amyrctdp 0:c735c66e37d3 379 void PCD_WriteRegister (uint8_t reg, uint8_t count, uint8_t *values);
Amyrctdp 0:c735c66e37d3 380
Amyrctdp 0:c735c66e37d3 381 /**
Amyrctdp 0:c735c66e37d3 382 * Reads a byte from the specified register in the MFRC522 chip.
Amyrctdp 0:c735c66e37d3 383 * The interface is described in the datasheet section 8.1.2.
Amyrctdp 0:c735c66e37d3 384 *
Amyrctdp 0:c735c66e37d3 385 * @param reg The register to read from. One of the PCD_Register enums.
Amyrctdp 0:c735c66e37d3 386 * @returns Register value
Amyrctdp 0:c735c66e37d3 387 */
Amyrctdp 0:c735c66e37d3 388 uint8_t PCD_ReadRegister (uint8_t reg);
Amyrctdp 0:c735c66e37d3 389
Amyrctdp 0:c735c66e37d3 390 /**
Amyrctdp 0:c735c66e37d3 391 * Reads a number of bytes from the specified register in the MFRC522 chip.
Amyrctdp 0:c735c66e37d3 392 * The interface is described in the datasheet section 8.1.2.
Amyrctdp 0:c735c66e37d3 393 *
Amyrctdp 0:c735c66e37d3 394 * @param reg The register to read from. One of the PCD_Register enums.
Amyrctdp 0:c735c66e37d3 395 * @param count The number of bytes to read.
Amyrctdp 0:c735c66e37d3 396 * @param values Byte array to store the values in.
Amyrctdp 0:c735c66e37d3 397 * @param rxAlign Only bit positions rxAlign..7 in values[0] are updated.
Amyrctdp 0:c735c66e37d3 398 */
Amyrctdp 0:c735c66e37d3 399 void PCD_ReadRegister (uint8_t reg, uint8_t count, uint8_t *values, uint8_t rxAlign = 0);
Amyrctdp 0:c735c66e37d3 400
Amyrctdp 0:c735c66e37d3 401 /**
Amyrctdp 0:c735c66e37d3 402 * Sets the bits given in mask in register reg.
Amyrctdp 0:c735c66e37d3 403 *
Amyrctdp 0:c735c66e37d3 404 * @param reg The register to update. One of the PCD_Register enums.
Amyrctdp 0:c735c66e37d3 405 * @param mask The bits to set.
Amyrctdp 0:c735c66e37d3 406 */
Amyrctdp 0:c735c66e37d3 407 void PCD_SetRegisterBits(uint8_t reg, uint8_t mask);
Amyrctdp 0:c735c66e37d3 408
Amyrctdp 0:c735c66e37d3 409 /**
Amyrctdp 0:c735c66e37d3 410 * Clears the bits given in mask from register reg.
Amyrctdp 0:c735c66e37d3 411 *
Amyrctdp 0:c735c66e37d3 412 * @param reg The register to update. One of the PCD_Register enums.
Amyrctdp 0:c735c66e37d3 413 * @param mask The bits to clear.
Amyrctdp 0:c735c66e37d3 414 */
Amyrctdp 0:c735c66e37d3 415 void PCD_ClrRegisterBits(uint8_t reg, uint8_t mask);
Amyrctdp 0:c735c66e37d3 416
Amyrctdp 0:c735c66e37d3 417 /**
Amyrctdp 0:c735c66e37d3 418 * Use the CRC coprocessor in the MFRC522 to calculate a CRC_A.
Amyrctdp 0:c735c66e37d3 419 *
Amyrctdp 0:c735c66e37d3 420 * @param data Pointer to the data to transfer to the FIFO for CRC calculation.
Amyrctdp 0:c735c66e37d3 421 * @param length The number of bytes to transfer.
Amyrctdp 0:c735c66e37d3 422 * @param result Pointer to result buffer. Result is written to result[0..1], low byte first.
Amyrctdp 0:c735c66e37d3 423 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 424 */
Amyrctdp 0:c735c66e37d3 425 uint8_t PCD_CalculateCRC (uint8_t *data, uint8_t length, uint8_t *result);
Amyrctdp 0:c735c66e37d3 426
Amyrctdp 0:c735c66e37d3 427 /**
Amyrctdp 0:c735c66e37d3 428 * Executes the Transceive command.
Amyrctdp 0:c735c66e37d3 429 * CRC validation can only be done if backData and backLen are specified.
Amyrctdp 0:c735c66e37d3 430 *
Amyrctdp 0:c735c66e37d3 431 * @param sendData Pointer to the data to transfer to the FIFO.
Amyrctdp 0:c735c66e37d3 432 * @param sendLen Number of bytes to transfer to the FIFO.
Amyrctdp 0:c735c66e37d3 433 * @param backData NULL or pointer to buffer if data should be read back after executing the command.
Amyrctdp 0:c735c66e37d3 434 * @param backLen Max number of bytes to write to *backData. Out: The number of bytes returned.
Amyrctdp 0:c735c66e37d3 435 * @param validBits The number of valid bits in the last byte. 0 for 8 valid bits. Default NULL.
Amyrctdp 0:c735c66e37d3 436 * @param rxAlign Defines the bit position in backData[0] for the first bit received. Default 0.
Amyrctdp 0:c735c66e37d3 437 * @param checkCRC True => The last two bytes of the response is assumed to be a CRC_A that must be validated.
Amyrctdp 0:c735c66e37d3 438 *
Amyrctdp 0:c735c66e37d3 439 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 440 */
Amyrctdp 0:c735c66e37d3 441 uint8_t PCD_TransceiveData (uint8_t *sendData,
Amyrctdp 0:c735c66e37d3 442 uint8_t sendLen,
Amyrctdp 0:c735c66e37d3 443 uint8_t *backData,
Amyrctdp 0:c735c66e37d3 444 uint8_t *backLen,
Amyrctdp 0:c735c66e37d3 445 uint8_t *validBits = NULL,
Amyrctdp 0:c735c66e37d3 446 uint8_t rxAlign = 0,
Amyrctdp 0:c735c66e37d3 447 bool checkCRC = false);
Amyrctdp 0:c735c66e37d3 448
Amyrctdp 0:c735c66e37d3 449
Amyrctdp 0:c735c66e37d3 450 /**
Amyrctdp 0:c735c66e37d3 451 * Transfers data to the MFRC522 FIFO, executes a commend, waits for completion and transfers data back from the FIFO.
Amyrctdp 0:c735c66e37d3 452 * CRC validation can only be done if backData and backLen are specified.
Amyrctdp 0:c735c66e37d3 453 *
Amyrctdp 0:c735c66e37d3 454 * @param command The command to execute. One of the PCD_Command enums.
Amyrctdp 0:c735c66e37d3 455 * @param waitIRq The bits in the ComIrqReg register that signals successful completion of the command.
Amyrctdp 0:c735c66e37d3 456 * @param sendData Pointer to the data to transfer to the FIFO.
Amyrctdp 0:c735c66e37d3 457 * @param sendLen Number of bytes to transfer to the FIFO.
Amyrctdp 0:c735c66e37d3 458 * @param backData NULL or pointer to buffer if data should be read back after executing the command.
Amyrctdp 0:c735c66e37d3 459 * @param backLen In: Max number of bytes to write to *backData. Out: The number of bytes returned.
Amyrctdp 0:c735c66e37d3 460 * @param validBits In/Out: The number of valid bits in the last byte. 0 for 8 valid bits.
Amyrctdp 0:c735c66e37d3 461 * @param rxAlign In: Defines the bit position in backData[0] for the first bit received. Default 0.
Amyrctdp 0:c735c66e37d3 462 * @param checkCRC In: True => The last two bytes of the response is assumed to be a CRC_A that must be validated.
Amyrctdp 0:c735c66e37d3 463 *
Amyrctdp 0:c735c66e37d3 464 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 465 */
Amyrctdp 0:c735c66e37d3 466 uint8_t PCD_CommunicateWithPICC(uint8_t command,
Amyrctdp 0:c735c66e37d3 467 uint8_t waitIRq,
Amyrctdp 0:c735c66e37d3 468 uint8_t *sendData,
Amyrctdp 0:c735c66e37d3 469 uint8_t sendLen,
Amyrctdp 0:c735c66e37d3 470 uint8_t *backData = NULL,
Amyrctdp 0:c735c66e37d3 471 uint8_t *backLen = NULL,
Amyrctdp 0:c735c66e37d3 472 uint8_t *validBits = NULL,
Amyrctdp 0:c735c66e37d3 473 uint8_t rxAlign = 0,
Amyrctdp 0:c735c66e37d3 474 bool checkCRC = false);
Amyrctdp 0:c735c66e37d3 475
Amyrctdp 0:c735c66e37d3 476 /**
Amyrctdp 0:c735c66e37d3 477 * Transmits a REQuest command, Type A. Invites PICCs in state IDLE to go to READY and prepare for anticollision or selection. 7 bit frame.
Amyrctdp 0:c735c66e37d3 478 * Beware: When two PICCs are in the field at the same time I often get STATUS_TIMEOUT - probably due do bad antenna design.
Amyrctdp 0:c735c66e37d3 479 *
Amyrctdp 0:c735c66e37d3 480 * @param bufferATQA The buffer to store the ATQA (Answer to request) in
Amyrctdp 0:c735c66e37d3 481 * @param bufferSize Buffer size, at least two bytes. Also number of bytes returned if STATUS_OK.
Amyrctdp 0:c735c66e37d3 482 *
Amyrctdp 0:c735c66e37d3 483 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 484 */
Amyrctdp 0:c735c66e37d3 485 uint8_t PICC_RequestA (uint8_t *bufferATQA, uint8_t *bufferSize);
Amyrctdp 0:c735c66e37d3 486
Amyrctdp 0:c735c66e37d3 487 /**
Amyrctdp 0:c735c66e37d3 488 * Transmits a 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.
Amyrctdp 0:c735c66e37d3 489 * Beware: When two PICCs are in the field at the same time I often get STATUS_TIMEOUT - probably due do bad antenna design.
Amyrctdp 0:c735c66e37d3 490 *
Amyrctdp 0:c735c66e37d3 491 * @param bufferATQA The buffer to store the ATQA (Answer to request) in
Amyrctdp 0:c735c66e37d3 492 * @param bufferSize Buffer size, at least two bytes. Also number of bytes returned if STATUS_OK.
Amyrctdp 0:c735c66e37d3 493 *
Amyrctdp 0:c735c66e37d3 494 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 495 */
Amyrctdp 0:c735c66e37d3 496 uint8_t PICC_WakeupA (uint8_t *bufferATQA, uint8_t *bufferSize);
Amyrctdp 0:c735c66e37d3 497
Amyrctdp 0:c735c66e37d3 498 /**
Amyrctdp 0:c735c66e37d3 499 * Transmits REQA or WUPA commands.
Amyrctdp 0:c735c66e37d3 500 * Beware: When two PICCs are in the field at the same time I often get STATUS_TIMEOUT - probably due do bad antenna design.
Amyrctdp 0:c735c66e37d3 501 *
Amyrctdp 0:c735c66e37d3 502 * @param command The command to send - PICC_CMD_REQA or PICC_CMD_WUPA
Amyrctdp 0:c735c66e37d3 503 * @param bufferATQA The buffer to store the ATQA (Answer to request) in
Amyrctdp 0:c735c66e37d3 504 * @param bufferSize Buffer size, at least two bytes. Also number of bytes returned if STATUS_OK.
Amyrctdp 0:c735c66e37d3 505 *
Amyrctdp 0:c735c66e37d3 506 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 507 */
Amyrctdp 0:c735c66e37d3 508 uint8_t PICC_REQA_or_WUPA (uint8_t command, uint8_t *bufferATQA, uint8_t *bufferSize);
Amyrctdp 0:c735c66e37d3 509
Amyrctdp 0:c735c66e37d3 510 /**
Amyrctdp 0:c735c66e37d3 511 * Transmits SELECT/ANTICOLLISION commands to select a single PICC.
Amyrctdp 0:c735c66e37d3 512 * Before calling this function the PICCs must be placed in the READY(*) state by calling PICC_RequestA() or PICC_WakeupA().
Amyrctdp 0:c735c66e37d3 513 * On success:
Amyrctdp 0:c735c66e37d3 514 * - The chosen PICC is in state ACTIVE(*) and all other PICCs have returned to state IDLE/HALT. (Figure 7 of the ISO/IEC 14443-3 draft.)
Amyrctdp 0:c735c66e37d3 515 * - The UID size and value of the chosen PICC is returned in *uid along with the SAK.
Amyrctdp 0:c735c66e37d3 516 *
Amyrctdp 0:c735c66e37d3 517 * A PICC UID consists of 4, 7 or 10 bytes.
Amyrctdp 0:c735c66e37d3 518 * Only 4 bytes can be specified in a SELECT command, so for the longer UIDs two or three iterations are used:
Amyrctdp 0:c735c66e37d3 519 *
Amyrctdp 0:c735c66e37d3 520 * UID size Number of UID bytes Cascade levels Example of PICC
Amyrctdp 0:c735c66e37d3 521 * ======== =================== ============== ===============
Amyrctdp 0:c735c66e37d3 522 * single 4 1 MIFARE Classic
Amyrctdp 0:c735c66e37d3 523 * double 7 2 MIFARE Ultralight
Amyrctdp 0:c735c66e37d3 524 * triple 10 3 Not currently in use?
Amyrctdp 0:c735c66e37d3 525 *
Amyrctdp 0:c735c66e37d3 526 *
Amyrctdp 0:c735c66e37d3 527 * @param uid Pointer to Uid struct. Normally output, but can also be used to supply a known UID.
Amyrctdp 0:c735c66e37d3 528 * @param validBits The number of known UID bits supplied in *uid. Normally 0. If set you must also supply uid->size.
Amyrctdp 0:c735c66e37d3 529 *
Amyrctdp 0:c735c66e37d3 530 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 531 */
Amyrctdp 0:c735c66e37d3 532 uint8_t PICC_Select (Uid *uid, uint8_t validBits = 0);
Amyrctdp 0:c735c66e37d3 533
Amyrctdp 0:c735c66e37d3 534 /**
Amyrctdp 0:c735c66e37d3 535 * Instructs a PICC in state ACTIVE(*) to go to state HALT.
Amyrctdp 0:c735c66e37d3 536 *
Amyrctdp 0:c735c66e37d3 537 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 538 */
Amyrctdp 0:c735c66e37d3 539 uint8_t PICC_HaltA (void);
Amyrctdp 0:c735c66e37d3 540
Amyrctdp 0:c735c66e37d3 541 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 542 //@}
Amyrctdp 0:c735c66e37d3 543
Amyrctdp 0:c735c66e37d3 544
Amyrctdp 0:c735c66e37d3 545 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 546 //! @name Functions for communicating with MIFARE PICCs
Amyrctdp 0:c735c66e37d3 547 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 548 //@{
Amyrctdp 0:c735c66e37d3 549
Amyrctdp 0:c735c66e37d3 550 /**
Amyrctdp 0:c735c66e37d3 551 * Executes the MFRC522 MFAuthent command.
Amyrctdp 0:c735c66e37d3 552 * This command manages MIFARE authentication to enable a secure communication to any MIFARE Mini, MIFARE 1K and MIFARE 4K card.
Amyrctdp 0:c735c66e37d3 553 * The authentication is described in the MFRC522 datasheet section 10.3.1.9 and http://www.nxp.com/documents/data_sheet/MF1S503x.pdf section 10.1.
Amyrctdp 0:c735c66e37d3 554 * For use with MIFARE Classic PICCs.
Amyrctdp 0:c735c66e37d3 555 * The PICC must be selected - ie in state ACTIVE(*) - before calling this function.
Amyrctdp 0:c735c66e37d3 556 * Remember to call PCD_StopCrypto1() after communicating with the authenticated PICC - otherwise no new communications can start.
Amyrctdp 0:c735c66e37d3 557 *
Amyrctdp 0:c735c66e37d3 558 * All keys are set to FFFFFFFFFFFFh at chip delivery.
Amyrctdp 0:c735c66e37d3 559 *
Amyrctdp 0:c735c66e37d3 560 * @param command PICC_CMD_MF_AUTH_KEY_A or PICC_CMD_MF_AUTH_KEY_B
Amyrctdp 0:c735c66e37d3 561 * @param blockAddr The block number. See numbering in the comments in the .h file.
Amyrctdp 0:c735c66e37d3 562 * @param key Pointer to the Crypteo1 key to use (6 bytes)
Amyrctdp 0:c735c66e37d3 563 * @param uid Pointer to Uid struct. The first 4 bytes of the UID is used.
Amyrctdp 0:c735c66e37d3 564 *
Amyrctdp 0:c735c66e37d3 565 * @return STATUS_OK on success, STATUS_??? otherwise. Probably STATUS_TIMEOUT if you supply the wrong key.
Amyrctdp 0:c735c66e37d3 566 */
Amyrctdp 0:c735c66e37d3 567 uint8_t PCD_Authenticate (uint8_t command, uint8_t blockAddr, MIFARE_Key *key, Uid *uid);
Amyrctdp 0:c735c66e37d3 568
Amyrctdp 0:c735c66e37d3 569 /**
Amyrctdp 0:c735c66e37d3 570 * Used to exit the PCD from its authenticated state.
Amyrctdp 0:c735c66e37d3 571 * Remember to call this function after communicating with an authenticated PICC - otherwise no new communications can start.
Amyrctdp 0:c735c66e37d3 572 */
Amyrctdp 0:c735c66e37d3 573 void PCD_StopCrypto1 (void);
Amyrctdp 0:c735c66e37d3 574
Amyrctdp 0:c735c66e37d3 575 /**
Amyrctdp 0:c735c66e37d3 576 * Reads 16 bytes (+ 2 bytes CRC_A) from the active PICC.
Amyrctdp 0:c735c66e37d3 577 *
Amyrctdp 0:c735c66e37d3 578 * For MIFARE Classic the sector containing the block must be authenticated before calling this function.
Amyrctdp 0:c735c66e37d3 579 *
Amyrctdp 0:c735c66e37d3 580 * For MIFARE Ultralight only addresses 00h to 0Fh are decoded.
Amyrctdp 0:c735c66e37d3 581 * The MF0ICU1 returns a NAK for higher addresses.
Amyrctdp 0:c735c66e37d3 582 * The MF0ICU1 responds to the READ command by sending 16 bytes starting from the page address defined by the command argument.
Amyrctdp 0:c735c66e37d3 583 * For example; if blockAddr is 03h then pages 03h, 04h, 05h, 06h are returned.
Amyrctdp 0:c735c66e37d3 584 * A roll-back is implemented: If blockAddr is 0Eh, then the contents of pages 0Eh, 0Fh, 00h and 01h are returned.
Amyrctdp 0:c735c66e37d3 585 *
Amyrctdp 0:c735c66e37d3 586 * The buffer must be at least 18 bytes because a CRC_A is also returned.
Amyrctdp 0:c735c66e37d3 587 * Checks the CRC_A before returning STATUS_OK.
Amyrctdp 0:c735c66e37d3 588 *
Amyrctdp 0:c735c66e37d3 589 * @param blockAddr MIFARE Classic: The block (0-0xff) number. MIFARE Ultralight: The first page to return data from.
Amyrctdp 0:c735c66e37d3 590 * @param buffer The buffer to store the data in
Amyrctdp 0:c735c66e37d3 591 * @param bufferSize Buffer size, at least 18 bytes. Also number of bytes returned if STATUS_OK.
Amyrctdp 0:c735c66e37d3 592 *
Amyrctdp 0:c735c66e37d3 593 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 594 */
Amyrctdp 0:c735c66e37d3 595 uint8_t MIFARE_Read (uint8_t blockAddr, uint8_t *buffer, uint8_t *bufferSize);
Amyrctdp 0:c735c66e37d3 596
Amyrctdp 0:c735c66e37d3 597 /**
Amyrctdp 0:c735c66e37d3 598 * Writes 16 bytes to the active PICC.
Amyrctdp 0:c735c66e37d3 599 *
Amyrctdp 0:c735c66e37d3 600 * For MIFARE Classic the sector containing the block must be authenticated before calling this function.
Amyrctdp 0:c735c66e37d3 601 *
Amyrctdp 0:c735c66e37d3 602 * For MIFARE Ultralight the opretaion is called "COMPATIBILITY WRITE".
Amyrctdp 0:c735c66e37d3 603 * Even though 16 bytes are transferred to the Ultralight PICC, only the least significant 4 bytes (bytes 0 to 3)
Amyrctdp 0:c735c66e37d3 604 * are written to the specified address. It is recommended to set the remaining bytes 04h to 0Fh to all logic 0.
Amyrctdp 0:c735c66e37d3 605 *
Amyrctdp 0:c735c66e37d3 606 * @param blockAddr MIFARE Classic: The block (0-0xff) number. MIFARE Ultralight: The page (2-15) to write to.
Amyrctdp 0:c735c66e37d3 607 * @param buffer The 16 bytes to write to the PICC
Amyrctdp 0:c735c66e37d3 608 * @param bufferSize Buffer size, must be at least 16 bytes. Exactly 16 bytes are written.
Amyrctdp 0:c735c66e37d3 609 *
Amyrctdp 0:c735c66e37d3 610 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 611 */
Amyrctdp 0:c735c66e37d3 612 uint8_t MIFARE_Write (uint8_t blockAddr, uint8_t *buffer, uint8_t bufferSize);
Amyrctdp 0:c735c66e37d3 613
Amyrctdp 0:c735c66e37d3 614 /**
Amyrctdp 0:c735c66e37d3 615 * Writes a 4 byte page to the active MIFARE Ultralight PICC.
Amyrctdp 0:c735c66e37d3 616 *
Amyrctdp 0:c735c66e37d3 617 * @param page The page (2-15) to write to.
Amyrctdp 0:c735c66e37d3 618 * @param buffer The 4 bytes to write to the PICC
Amyrctdp 0:c735c66e37d3 619 * @param bufferSize Buffer size, must be at least 4 bytes. Exactly 4 bytes are written.
Amyrctdp 0:c735c66e37d3 620 *
Amyrctdp 0:c735c66e37d3 621 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 622 */
Amyrctdp 0:c735c66e37d3 623 uint8_t MIFARE_UltralightWrite(uint8_t page, uint8_t *buffer, uint8_t bufferSize);
Amyrctdp 0:c735c66e37d3 624
Amyrctdp 0:c735c66e37d3 625 /**
Amyrctdp 0:c735c66e37d3 626 * MIFARE Decrement subtracts the delta from the value of the addressed block, and stores the result in a volatile memory.
Amyrctdp 0:c735c66e37d3 627 * For MIFARE Classic only. The sector containing the block must be authenticated before calling this function.
Amyrctdp 0:c735c66e37d3 628 * Only for blocks in "value block" mode, ie with access bits [C1 C2 C3] = [110] or [001].
Amyrctdp 0:c735c66e37d3 629 * Use MIFARE_Transfer() to store the result in a block.
Amyrctdp 0:c735c66e37d3 630 *
Amyrctdp 0:c735c66e37d3 631 * @param blockAddr The block (0-0xff) number.
Amyrctdp 0:c735c66e37d3 632 * @param delta This number is subtracted from the value of block blockAddr.
Amyrctdp 0:c735c66e37d3 633 *
Amyrctdp 0:c735c66e37d3 634 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 635 */
Amyrctdp 0:c735c66e37d3 636 uint8_t MIFARE_Decrement (uint8_t blockAddr, uint32_t delta);
Amyrctdp 0:c735c66e37d3 637
Amyrctdp 0:c735c66e37d3 638 /**
Amyrctdp 0:c735c66e37d3 639 * MIFARE Increment adds the delta to the value of the addressed block, and stores the result in a volatile memory.
Amyrctdp 0:c735c66e37d3 640 * For MIFARE Classic only. The sector containing the block must be authenticated before calling this function.
Amyrctdp 0:c735c66e37d3 641 * Only for blocks in "value block" mode, ie with access bits [C1 C2 C3] = [110] or [001].
Amyrctdp 0:c735c66e37d3 642 * Use MIFARE_Transfer() to store the result in a block.
Amyrctdp 0:c735c66e37d3 643 *
Amyrctdp 0:c735c66e37d3 644 * @param blockAddr The block (0-0xff) number.
Amyrctdp 0:c735c66e37d3 645 * @param delta This number is added to the value of block blockAddr.
Amyrctdp 0:c735c66e37d3 646 *
Amyrctdp 0:c735c66e37d3 647 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 648 */
Amyrctdp 0:c735c66e37d3 649 uint8_t MIFARE_Increment (uint8_t blockAddr, uint32_t delta);
Amyrctdp 0:c735c66e37d3 650
Amyrctdp 0:c735c66e37d3 651 /**
Amyrctdp 0:c735c66e37d3 652 * MIFARE Restore copies the value of the addressed block into a volatile memory.
Amyrctdp 0:c735c66e37d3 653 * For MIFARE Classic only. The sector containing the block must be authenticated before calling this function.
Amyrctdp 0:c735c66e37d3 654 * Only for blocks in "value block" mode, ie with access bits [C1 C2 C3] = [110] or [001].
Amyrctdp 0:c735c66e37d3 655 * Use MIFARE_Transfer() to store the result in a block.
Amyrctdp 0:c735c66e37d3 656 *
Amyrctdp 0:c735c66e37d3 657 * @param blockAddr The block (0-0xff) number.
Amyrctdp 0:c735c66e37d3 658 *
Amyrctdp 0:c735c66e37d3 659 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 660 */
Amyrctdp 0:c735c66e37d3 661 uint8_t MIFARE_Restore (uint8_t blockAddr);
Amyrctdp 0:c735c66e37d3 662
Amyrctdp 0:c735c66e37d3 663 /**
Amyrctdp 0:c735c66e37d3 664 * MIFARE Transfer writes the value stored in the volatile memory into one MIFARE Classic block.
Amyrctdp 0:c735c66e37d3 665 * For MIFARE Classic only. The sector containing the block must be authenticated before calling this function.
Amyrctdp 0:c735c66e37d3 666 * Only for blocks in "value block" mode, ie with access bits [C1 C2 C3] = [110] or [001].
Amyrctdp 0:c735c66e37d3 667 *
Amyrctdp 0:c735c66e37d3 668 * @param blockAddr The block (0-0xff) number.
Amyrctdp 0:c735c66e37d3 669 *
Amyrctdp 0:c735c66e37d3 670 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 671 */
Amyrctdp 0:c735c66e37d3 672 uint8_t MIFARE_Transfer (uint8_t blockAddr);
Amyrctdp 0:c735c66e37d3 673
Amyrctdp 0:c735c66e37d3 674 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 675 //@}
Amyrctdp 0:c735c66e37d3 676
Amyrctdp 0:c735c66e37d3 677
Amyrctdp 0:c735c66e37d3 678 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 679 //! @name Support functions
Amyrctdp 0:c735c66e37d3 680 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 681 //@{
Amyrctdp 0:c735c66e37d3 682
Amyrctdp 0:c735c66e37d3 683 /**
Amyrctdp 0:c735c66e37d3 684 * Wrapper for MIFARE protocol communication.
Amyrctdp 0:c735c66e37d3 685 * Adds CRC_A, executes the Transceive command and checks that the response is MF_ACK or a timeout.
Amyrctdp 0:c735c66e37d3 686 *
Amyrctdp 0:c735c66e37d3 687 * @param sendData Pointer to the data to transfer to the FIFO. Do NOT include the CRC_A.
Amyrctdp 0:c735c66e37d3 688 * @param sendLen Number of bytes in sendData.
Amyrctdp 0:c735c66e37d3 689 * @param acceptTimeout True => A timeout is also success
Amyrctdp 0:c735c66e37d3 690 *
Amyrctdp 0:c735c66e37d3 691 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 692 */
Amyrctdp 0:c735c66e37d3 693 uint8_t PCD_MIFARE_Transceive(uint8_t *sendData, uint8_t sendLen, bool acceptTimeout = false);
Amyrctdp 0:c735c66e37d3 694
Amyrctdp 0:c735c66e37d3 695 /**
Amyrctdp 0:c735c66e37d3 696 * Translates the SAK (Select Acknowledge) to a PICC type.
Amyrctdp 0:c735c66e37d3 697 *
Amyrctdp 0:c735c66e37d3 698 * @param sak The SAK byte returned from PICC_Select().
Amyrctdp 0:c735c66e37d3 699 *
Amyrctdp 0:c735c66e37d3 700 * @return PICC_Type
Amyrctdp 0:c735c66e37d3 701 */
Amyrctdp 0:c735c66e37d3 702 uint8_t PICC_GetType (uint8_t sak);
Amyrctdp 0:c735c66e37d3 703
Amyrctdp 0:c735c66e37d3 704 /**
Amyrctdp 0:c735c66e37d3 705 * Returns a string pointer to the PICC type name.
Amyrctdp 0:c735c66e37d3 706 *
Amyrctdp 0:c735c66e37d3 707 * @param type One of the PICC_Type enums.
Amyrctdp 0:c735c66e37d3 708 *
Amyrctdp 0:c735c66e37d3 709 * @return A string pointer to the PICC type name.
Amyrctdp 0:c735c66e37d3 710 */
Amyrctdp 0:c735c66e37d3 711 char* PICC_GetTypeName (uint8_t type);
Amyrctdp 0:c735c66e37d3 712
Amyrctdp 0:c735c66e37d3 713 /**
Amyrctdp 0:c735c66e37d3 714 * Returns a string pointer to a status code name.
Amyrctdp 0:c735c66e37d3 715 *
Amyrctdp 0:c735c66e37d3 716 * @param code One of the StatusCode enums.
Amyrctdp 0:c735c66e37d3 717 *
Amyrctdp 0:c735c66e37d3 718 * @return A string pointer to a status code name.
Amyrctdp 0:c735c66e37d3 719 */
Amyrctdp 0:c735c66e37d3 720 char* GetStatusCodeName (uint8_t code);
Amyrctdp 0:c735c66e37d3 721
Amyrctdp 0:c735c66e37d3 722 /**
Amyrctdp 0:c735c66e37d3 723 * Calculates the bit pattern needed for the specified access bits. In the [C1 C2 C3] tupples C1 is MSB (=4) and C3 is LSB (=1).
Amyrctdp 0:c735c66e37d3 724 *
Amyrctdp 0:c735c66e37d3 725 * @param accessBitBuffer Pointer to byte 6, 7 and 8 in the sector trailer. Bytes [0..2] will be set.
Amyrctdp 0:c735c66e37d3 726 * @param g0 Access bits [C1 C2 C3] for block 0 (for sectors 0-31) or blocks 0-4 (for sectors 32-39)
Amyrctdp 0:c735c66e37d3 727 * @param g1 Access bits [C1 C2 C3] for block 1 (for sectors 0-31) or blocks 5-9 (for sectors 32-39)
Amyrctdp 0:c735c66e37d3 728 * @param g2 Access bits [C1 C2 C3] for block 2 (for sectors 0-31) or blocks 10-14 (for sectors 32-39)
Amyrctdp 0:c735c66e37d3 729 * @param g3 Access bits [C1 C2 C3] for the sector trailer, block 3 (for sectors 0-31) or block 15 (for sectors 32-39)
Amyrctdp 0:c735c66e37d3 730 */
Amyrctdp 0:c735c66e37d3 731 void MIFARE_SetAccessBits (uint8_t *accessBitBuffer,
Amyrctdp 0:c735c66e37d3 732 uint8_t g0,
Amyrctdp 0:c735c66e37d3 733 uint8_t g1,
Amyrctdp 0:c735c66e37d3 734 uint8_t g2,
Amyrctdp 0:c735c66e37d3 735 uint8_t g3);
Amyrctdp 0:c735c66e37d3 736
Amyrctdp 0:c735c66e37d3 737 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 738 //@}
Amyrctdp 0:c735c66e37d3 739
Amyrctdp 0:c735c66e37d3 740
Amyrctdp 0:c735c66e37d3 741 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 742 //! @name Convenience functions - does not add extra functionality
Amyrctdp 0:c735c66e37d3 743 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 744 //@{
Amyrctdp 0:c735c66e37d3 745
Amyrctdp 0:c735c66e37d3 746 /**
Amyrctdp 0:c735c66e37d3 747 * Returns true if a PICC responds to PICC_CMD_REQA.
Amyrctdp 0:c735c66e37d3 748 * Only "new" cards in state IDLE are invited. Sleeping cards in state HALT are ignored.
Amyrctdp 0:c735c66e37d3 749 *
Amyrctdp 0:c735c66e37d3 750 * @return bool
Amyrctdp 0:c735c66e37d3 751 */
Amyrctdp 0:c735c66e37d3 752 bool PICC_IsNewCardPresent(void);
Amyrctdp 0:c735c66e37d3 753
Amyrctdp 0:c735c66e37d3 754 /**
Amyrctdp 0:c735c66e37d3 755 * Simple wrapper around PICC_Select.
Amyrctdp 0:c735c66e37d3 756 * Returns true if a UID could be read.
Amyrctdp 0:c735c66e37d3 757 * Remember to call PICC_IsNewCardPresent(), PICC_RequestA() or PICC_WakeupA() first.
Amyrctdp 0:c735c66e37d3 758 * The read UID is available in the class variable uid.
Amyrctdp 0:c735c66e37d3 759 *
Amyrctdp 0:c735c66e37d3 760 * @return bool
Amyrctdp 0:c735c66e37d3 761 */
Amyrctdp 0:c735c66e37d3 762 bool PICC_ReadCardSerial (void);
Amyrctdp 0:c735c66e37d3 763
Amyrctdp 0:c735c66e37d3 764 // ************************************************************************************
Amyrctdp 0:c735c66e37d3 765 //@}
Amyrctdp 0:c735c66e37d3 766
Amyrctdp 0:c735c66e37d3 767
Amyrctdp 0:c735c66e37d3 768 private:
Amyrctdp 0:c735c66e37d3 769 SPI m_SPI;
Amyrctdp 0:c735c66e37d3 770 DigitalOut m_CS;
Amyrctdp 0:c735c66e37d3 771 DigitalOut m_RESET;
Amyrctdp 0:c735c66e37d3 772
Amyrctdp 0:c735c66e37d3 773 /**
Amyrctdp 0:c735c66e37d3 774 * Helper function for the two-step MIFARE Classic protocol operations Decrement, Increment and Restore.
Amyrctdp 0:c735c66e37d3 775 *
Amyrctdp 0:c735c66e37d3 776 * @param command The command to use
Amyrctdp 0:c735c66e37d3 777 * @param blockAddr The block (0-0xff) number.
Amyrctdp 0:c735c66e37d3 778 * @param data The data to transfer in step 2
Amyrctdp 0:c735c66e37d3 779 *
Amyrctdp 0:c735c66e37d3 780 * @return STATUS_OK on success, STATUS_??? otherwise.
Amyrctdp 0:c735c66e37d3 781 */
Amyrctdp 0:c735c66e37d3 782 uint8_t MIFARE_TwoStepHelper(uint8_t command, uint8_t blockAddr, uint32_t data);
Amyrctdp 0:c735c66e37d3 783 };
Amyrctdp 0:c735c66e37d3 784
Amyrctdp 0:c735c66e37d3 785 #endif