include/em4x50.h

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2020 tharexde
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Low frequency EM4x50 structs
   9 //-----------------------------------------------------------------------------
  10
  11 #ifndef EM4X50_H__
  12 #define EM4X50_H__
  13
  14 #include "common.h"
  15
  16 #define EM4X50_NO_WORDS             34
  17
  18 // special words
  19 #define EM4X50_DEVICE_PASSWORD      0
  20 #define EM4X50_PROTECTION           1
  21 #define EM4X50_CONTROL              2
  22 #define EM4X50_DEVICE_SERIAL        32
  23 #define EM4X50_DEVICE_ID            33
  24
  25 // control word (word = 4 bytes)
  26 #define FIRST_WORD_READ             0       // first byte
  27 #define LAST_WORD_READ              1       // second byte
  28 #define CONFIG_BLOCK                2       // third byte
  29 #define PASSWORD_CHECK              0x80    // first bit in third byte
  30 #define READ_AFTER_WRITE            0x40    // second bit in third byte
  31
  32 // protection word
  33 #define FIRST_WORD_READ_PROTECTED   0       // first byte
  34 #define LAST_WORD_READ_PROTECTED    1       // second byte
  35 #define FIRST_WORD_WRITE_INHIBITED  2       // third byte
  36 #define LAST_WORD_WRITE_INHIBITED   3       // fourth byte
  37
  38 // commands
  39 #define EM4X50_COMMAND_LOGIN                0x01
  40 #define EM4X50_COMMAND_RESET                0x80
  41 #define EM4X50_COMMAND_WRITE                0x12
  42 #define EM4X50_COMMAND_WRITE_PASSWORD       0x11
  43 #define EM4X50_COMMAND_SELECTIVE_READ       0x0A
  44 #define EM4X50_COMMAND_STANDARD_READ        0x02 // virtual command
  45
  46 // misc
  47 #define TIMEOUT_CMD                 3000
  48 #define DUMP_FILESIZE               136
  49
  50 typedef struct {
  51     bool addr_given;
  52     bool pwd_given;
  53     uint32_t password1;
  54     uint32_t password2;
  55     uint32_t word;
  56     uint32_t addresses;
  57 } PACKED em4x50_data_t;
  58
  59 typedef struct {
  60     uint8_t byte[4];
  61 } PACKED em4x50_word_t;
  62
  63 extern bool gLogin;
  64 extern bool gWritePasswordProcess;
  65 extern uint32_t gPassword;
  66
  67 #endif /* EM4X50_H__ */