//-----------------------------------------------------------------------------
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// ISO15693 other commons
//-----------------------------------------------------------------------------
// Adrian Dabrowski 2010 and otherss
// Christian Herrmann 2018

#ifndef ISO15693_H__
#define ISO15693_H__

#include "common.h"

// REQUEST FLAGS
#define ISO15_REQ_SUBCARRIER_SINGLE      0x00 // Tag should respond using one subcarrier (ASK)
#define ISO15_REQ_SUBCARRIER_TWO         0x01 // Tag should respond using two subcarriers (FSK)
#define ISO15_REQ_DATARATE_LOW           0x00 // Tag should respond using low data rate
#define ISO15_REQ_DATARATE_HIGH          0x02 // Tag should respond using high data rate
#define ISO15_REQ_NONINVENTORY           0x00
#define ISO15_REQ_INVENTORY              0x04 // This is an inventory request - see inventory flags
#define ISO15_REQ_PROTOCOL_NONEXT        0x00
#define ISO15_REQ_PROTOCOL_EXT           0x08 // RFU

// REQUEST FLAGS when INVENTORY is not set
#define ISO15_REQ_SELECT                 0x10 // only selected cards response
#define ISO15_REQ_ADDRESS                0x20 // this req contains an address
#define ISO15_REQ_OPTION                 0x40 // Command specific option selector

//REQUEST FLAGS when INVENTORY is set
#define ISO15_REQINV_AFI                 0x10 // AFI Field is present
#define ISO15_REQINV_SLOT1               0x20 // 1 Slot
#define ISO15_REQINV_SLOT16              0x00 // 16 Slots
#define ISO15_REQINV_OPTION              0x40 // Command specific option selector

//RESPONSE FLAGS
#define ISO15_RES_ERROR                  0x01
#define ISO15_RES_EXT                    0x08 // Protocol Extention

// RESPONSE ERROR CODES
#define ISO15_NOERROR                    0x00
#define ISO15_ERROR_CMD_NOT_SUP          0x01 // Command not supported
#define ISO15_ERROR_CMD_NOT_REC          0x02 // Command not recognized (eg. parameter error)
#define ISO15_ERROR_CMD_OPTION           0x03 // Command option not supported
#define ISO15_ERROR_GENERIC              0x0F // No additional Info about this error
#define ISO15_ERROR_BLOCK_UNAVAILABLE    0x10
#define ISO15_ERROR_BLOCK_LOCKED_ALREADY 0x11 // cannot lock again
#define ISO15_ERROR_BLOCK_LOCKED         0x12 // cannot be changed
#define ISO15_ERROR_BLOCK_WRITE          0x13 // Writing was unsuccessful
#define ISO15_ERROR_BLOCL_WRITELOCK      0x14 // Locking was unsuccessful

// COMMAND CODES
#define ISO15_CMD_INVENTORY              0x01
#define ISO15_CMD_STAYQUIET              0x02
#define ISO15_CMD_READ                   0x20
#define ISO15_CMD_WRITE                  0x21
#define ISO15_CMD_LOCK                   0x22
#define ISO15_CMD_READMULTI              0x23
#define ISO15_CMD_WRITEMULTI             0x24
#define ISO15_CMD_SELECT                 0x25
#define ISO15_CMD_RESET                  0x26
#define ISO15_CMD_WRITEAFI               0x27
#define ISO15_CMD_LOCKAFI                0x28
#define ISO15_CMD_WRITEDSFID             0x29
#define ISO15_CMD_LOCKDSFID              0x2A
#define ISO15_CMD_SYSINFO                0x2B
#define ISO15_CMD_SECSTATUS              0x2C

//-----------------------------------------------------------------------------
// Map a sequence of octets (~layer 2 command) into the set of bits to feed
// to the FPGA, to transmit that command to the tag.
// Mode: highspeed && one subcarrier (ASK)
//-----------------------------------------------------------------------------

// The sampling rate is 106.353 ksps/s, for T = 18.8 us

// SOF defined as
// 1) Unmodulated time of 56.64us
// 2) 24 pulses of 423.75kHz
// 3) logic '1' (unmodulated for 18.88us followed by 8 pulses of 423.75kHz)

static const int Iso15693FrameSOF[] = {
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
        1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
        1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
        -1, -1, -1, -1,
        -1, -1, -1, -1,
        1,  1,  1,  1,
        1,  1,  1,  1
    };
static const int Iso15693Logic0[] = {
    1,  1,  1,  1,
    1,  1,  1,  1,
    -1, -1, -1, -1,
    -1, -1, -1, -1
};
static const int Iso15693Logic1[] = {
    -1, -1, -1, -1,
        -1, -1, -1, -1,
        1,  1,  1,  1,
        1,  1,  1,  1
    };

// EOF defined as
// 1) logic '0' (8 pulses of 423.75kHz followed by unmodulated for 18.88us)
// 2) 24 pulses of 423.75kHz
// 3) Unmodulated time of 56.64us
static const int Iso15693FrameEOF[] = {
    1,  1,  1,  1,
    1,  1,  1,  1,
    -1, -1, -1, -1,
    -1, -1, -1, -1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};

char *Iso15693sprintUID(char *target, uint8_t *uid);

#endif