Momentum-Firmware/lib/nfc/protocols/nfcv.h

#pragma once

#include <stdint.h>
#include <stdbool.h>

#include <lib/digital_signal/digital_signal.h>
#include <lib/pulse_reader/pulse_reader.h>
#include "nfc_util.h"
#include <furi_hal_nfc.h>




#define NFCV_FC                      (13560000.0f) /* MHz */
#define NFCV_RESP_SUBC1_PULSE_32     (1.0f / (NFCV_FC/32) / 2.0f) /*  1.1799 µs */
#define NFCV_RESP_SUBC1_UNMOD_256    (256.0f / NFCV_FC)           /* 18.8791 µs */

#define PULSE_DURATION_NS            (128.0f * 1000000000.0f / NFCV_FC) /* ns */

#define DIGITAL_SIGNAL_UNIT_S        (100000000000.0f)
#define DIGITAL_SIGNAL_UNIT_US       (100000.0f)

#define NFCV_TOTAL_BLOCKS_MAX        256
#define NFCV_BLOCK_SIZE              4
#define NFCV_MAX_DUMP_SIZE           (NFCV_BLOCK_SIZE*NFCV_TOTAL_BLOCKS_MAX)


#define NFCV_FRAME_STATE_SOF1        0
#define NFCV_FRAME_STATE_SOF2        1
#define NFCV_FRAME_STATE_CODING_4    2
#define NFCV_FRAME_STATE_CODING_256  3
#define NFCV_FRAME_STATE_EOF         4
#define NFCV_FRAME_STATE_RESET       5

/*  */
#define ISO15693_INVENTORY                   0x01
#define ISO15693_STAYQUIET                   0x02
#define ISO15693_READBLOCK                   0x20
#define ISO15693_WRITEBLOCK                  0x21
#define ISO15693_LOCKBLOCK                   0x22
#define ISO15693_READ_MULTI_BLOCK            0x23
#define ISO15693_WRITE_MULTI_BLOCK           0x24
#define ISO15693_SELECT                      0x25
#define ISO15693_RESET_TO_READY              0x26
#define ISO15693_WRITE_AFI                   0x27
#define ISO15693_LOCK_AFI                    0x28
#define ISO15693_WRITE_DSFID                 0x29
#define ISO15693_LOCK_DSFID                  0x2A
#define ISO15693_GET_SYSTEM_INFO             0x2B
#define ISO15693_READ_MULTI_SECSTATUS        0x2C

// ISO15693 MANUFACTURER CODES
#define ISO15693_MANUFACTURER_NXP 0x04

// ISO15693-3 CUSTOM NXP COMMANDS
#define ISO15693_CMD_NXP_SET_EAS                  0xA2
#define ISO15693_CMD_NXP_RESET_EAS                0xA3
#define ISO15693_CMD_NXP_LOCK_EAS                 0xA4
#define ISO15693_CMD_NXP_EAS_ALARM                0xA5
#define ISO15693_CMD_NXP_PASSWORD_PROTECT_EAS_AFI 0xA6
#define ISO15693_CMD_NXP_WRITE_EAS_ID             0xA7
#define ISO15693_CMD_NXP_INVENTORY_PAGE_READ      0xB0
#define ISO15693_CMD_NXP_INVENTORY_PAGE_READ_FAST 0xB1
#define ISO15693_CMD_NXP_GET_RANDOM_NUMBER        0xB2
#define ISO15693_CMD_NXP_SET_PASSWORD             0xB3
#define ISO15693_CMD_NXP_WRITE_PASSWORD           0xB4
#define ISO15693_CMD_NXP_DESTROY                  0xB9
#define ISO15693_CMD_NXP_ENABLE_PRIVACY           0xBA

// ISO15693 RESPONSE ERROR CODES
#define ISO15693_NOERROR                     0x00
#define ISO15693_ERROR_CMD_NOT_SUP           0x01 // Command not supported
#define ISO15693_ERROR_CMD_NOT_REC           0x02 // Command not recognized (eg. parameter error)
#define ISO15693_ERROR_CMD_OPTION            0x03 // Command option not supported
#define ISO15693_ERROR_GENERIC               0x0F // No additional Info about this error
#define ISO15693_ERROR_BLOCK_UNAVAILABLE     0x10
#define ISO15693_ERROR_BLOCK_LOCKED_ALREADY  0x11 // cannot lock again
#define ISO15693_ERROR_BLOCK_LOCKED          0x12 // cannot be changed
#define ISO15693_ERROR_BLOCK_WRITE           0x13 // Writing was unsuccessful
#define ISO15693_ERROR_BLOCL_WRITELOCK       0x14 // Locking was unsuccessful


typedef enum {
    NfcVAuthMethodManual,
    NfcVAuthMethodTonieBox,
} NfcVAuthMethod;

typedef enum {
    NfcVTypePlain = 0,
    NfcVTypeSlix  = 1,
    NfcVTypeSlixS = 2,
    NfcVTypeSlixL = 3,
    NfcVTypeSlix2 = 4,
} NfcVType;

typedef struct {
    uint8_t key_eas[4];
    uint8_t rand[2];
} NfcVSlixData;

typedef struct {
    uint8_t key_read[4];
    uint8_t key_write[4];
    uint8_t key_privacy[4];
    uint8_t key_destroy[4];
    uint8_t key_eas[4];
    uint8_t rand[2];
    bool privacy;
} NfcVSlix2Data;

typedef struct {
    uint8_t key_read[4];
    uint8_t key_write[4];
    uint8_t key_privacy[4];
    uint8_t key_destroy[4];
    uint8_t key_eas[4];
    uint8_t rand[2];
    bool privacy;
} NfcVSlixSData;

typedef struct {
    uint8_t key_privacy[4];
    uint8_t key_destroy[4];
    uint8_t key_eas[4];
    uint8_t rand[2];
    bool privacy;
} NfcVSlixLData;

typedef union {
    NfcVSlixData slix;
    NfcVSlix2Data slix2;
    NfcVSlixSData slix_s;
    NfcVSlixLData slix_l;
} NfcVSubtypeData;

typedef struct {
    /* common ISO15693 fields */
    uint8_t dsfid;
    uint8_t afi;
    uint8_t ic_ref;
    uint16_t block_num;
    uint8_t block_size;
    uint8_t data[NFCV_MAX_DUMP_SIZE];

    /* specfic variant infos */
    NfcVType type;
    NfcVSubtypeData sub_data;

    /* runtime data */
    char last_command[128];
    char error[32];
    NfcVAuthMethod auth_method;
    bool auth_success;
} NfcVData;

typedef struct {
    uint16_t blocks_to_read;
    int16_t blocks_read;
} NfcVReader;

ReturnCode nfcv_read_blocks(NfcVReader* reader, NfcVData* data);    
ReturnCode nfcv_read_sysinfo(FuriHalNfcDevData* nfc_data, NfcVData* data);
ReturnCode nfcv_inventory(uint8_t* uid);
bool nfcv_read_card(NfcVReader* reader, FuriHalNfcDevData* nfc_data, NfcVData* data);

void nfcv_emu_init(FuriHalNfcDevData* nfc_data, NfcVData* nfcv_data);
void nfcv_emu_deinit();
bool nfcv_emu_loop(FuriHalNfcDevData* nfc_data, NfcVData* nfcv_data, uint32_t timeout_ms);