Serial2Keyboard.ino

// https://github.com/NicoHood/HID
#include "HID-Project.h"

#define VERSION "1.1"
#define KEYMAP_LEN 256
#define KEY_RELEASE_DELAYTIME 70 // キーをリリースするまでの待ち時間(msec)
#define KEY_SHIFT_ENABLE 0x100 //　シフト入力有

byte pushingModificationKey = 0; // 押されている装飾キー

// {キーコード,SHIFTキーの有無(有=true)}
const uint16_t KEYMap[KEYMAP_LEN] =
{
   KEY_ERROR_UNDEFINED, //0  0x00  NUL(null文字)
   KEY_ERROR_UNDEFINED, //1 0x01  SOH(ヘッダ開始)
   KEY_ERROR_UNDEFINED, //2 0x02  STX(テキスト開始)
   KEY_ERROR_UNDEFINED, //3 0x03  ETX(テキスト終了)
   KEY_ERROR_UNDEFINED, //4 0x04  EOT(転送終了)
   KEY_ERROR_UNDEFINED, //5 0x05  ENQ(照会)
   KEY_ERROR_UNDEFINED, //6 0x06  ACK(受信確認)
   KEY_ERROR_UNDEFINED, //7 0x07  BEL(警告)
   KEY_BACKSPACE, //8 0x08  BS(後退)
   KEY_TAB, //9 0x09  HT(水平タブ)
   KEY_ENTER, //10  0x0a  LF(改行)
   KEY_ERROR_UNDEFINED, //11  0x0b  VT(垂直タブ)
   KEY_ERROR_UNDEFINED, //12  0x0c  FF(改頁)
   KEY_ERROR_UNDEFINED, //13  0x0d  CR(復帰)
   KEY_ERROR_UNDEFINED, //14  0x0e  SO(シフトアウト)
   KEY_ERROR_UNDEFINED, //15  0x0f  SI(シフトイン)
   KEY_ERROR_UNDEFINED, //16  0x10  DLE(データリンクエスケープ)
   KEY_ERROR_UNDEFINED, //17  0x11  DC1(装置制御1)
   KEY_ERROR_UNDEFINED, //18  0x12  DC2(装置制御2)
   KEY_ERROR_UNDEFINED, //19  0x13  DC3(装置制御3)
   KEY_ERROR_UNDEFINED, //20  0x14  DC4(装置制御4)
   KEY_ERROR_UNDEFINED, //21  0x15  NAK(受信失敗)
   KEY_ERROR_UNDEFINED, //22  0x16  SYN(同期)
   KEY_ERROR_UNDEFINED, //23  0x17  ETB(転送ブロック終了)
   KEY_ERROR_UNDEFINED, //24  0x18  CAN(キャンセル)
   KEY_ERROR_UNDEFINED, //25  0x19  EM(メディア終了)
   KEY_ERROR_UNDEFINED, //26  0x1a  SUB(置換)
   KEY_ESC, //27  0x1b  ESC(エスケープ)
   KEY_ERROR_UNDEFINED, //28  0x1c  FS(フォーム区切り)
   KEY_ERROR_UNDEFINED, //29  0x1d  GS(グループ区切り)
   KEY_ERROR_UNDEFINED, //30  0x1e  RS(レコード区切り)
   KEY_ERROR_UNDEFINED, //31  0x1f  US(ユニット区切り)
   KEY_SPACE, //32  0x20  SPC(空白文字)
   KEY_1 | KEY_SHIFT_ENABLE, //33  0x21  !
   KEY_2 | KEY_SHIFT_ENABLE, //34  0x22  "
   KEY_3 | KEY_SHIFT_ENABLE, //35  0x23  #
   KEY_4 | KEY_SHIFT_ENABLE, //36  0x24  $
   KEY_5 | KEY_SHIFT_ENABLE, //37  0x25  %
   KEY_6 | KEY_SHIFT_ENABLE, //38  0x26  &
   KEY_7 | KEY_SHIFT_ENABLE, //39  0x27  '
   KEY_8 | KEY_SHIFT_ENABLE, //40  0x28  (
   KEY_9 | KEY_SHIFT_ENABLE, //41  0x29  )
   KEY_QUOTE | KEY_SHIFT_ENABLE, //42  0x2a  *
   KEY_SEMICOLON | KEY_SHIFT_ENABLE, //43  0x2b  +
   KEY_COMMA, //44  0x2c  ,
   KEY_MINUS, //45  0x2d  -
   KEY_PERIOD, //46  0x2e  .
   KEY_SLASH, //47  0x2f  /
   KEY_0, //48  0x30  0
   KEY_1, //49  0x31  1
   KEY_2, //50  0x32  2
   KEY_3, //51  0x33  3
   KEY_4, //52  0x34  4
   KEY_5, //53  0x35  5
   KEY_6, //54  0x36  6
   KEY_7, //55  0x37  7
   KEY_8, //56  0x38  8
   KEY_9, //57  0x39  9
   KEY_QUOTE, //58  0x3a  :
   KEY_SEMICOLON, //59  0x3b  ;
   KEY_COMMA | KEY_SHIFT_ENABLE, //60  0x3c  <
   KEY_MINUS | KEY_SHIFT_ENABLE, //61  0x3d  =
   KEY_PERIOD | KEY_SHIFT_ENABLE, //62  0x3e  >
   KEY_SLASH | KEY_SHIFT_ENABLE, //63  0x3f  ?
   KEY_LEFT_BRACE, //64  0x40  @
   KEY_A | KEY_SHIFT_ENABLE, //65  0x41  A
   KEY_B | KEY_SHIFT_ENABLE, //66  0x42  B
   KEY_C | KEY_SHIFT_ENABLE, //67  0x43  C
   KEY_D | KEY_SHIFT_ENABLE, //68  0x44  D
   KEY_E | KEY_SHIFT_ENABLE, //69  0x45  E
   KEY_F | KEY_SHIFT_ENABLE, //70  0x46  F
   KEY_G | KEY_SHIFT_ENABLE, //71  0x47  G
   KEY_H | KEY_SHIFT_ENABLE, //72  0x48  H
   KEY_I | KEY_SHIFT_ENABLE, //73  0x49  I
   KEY_J | KEY_SHIFT_ENABLE, //74  0x4a  J
   KEY_K | KEY_SHIFT_ENABLE, //75  0x4b  K
   KEY_L | KEY_SHIFT_ENABLE, //76  0x4c  L
   KEY_M | KEY_SHIFT_ENABLE, //77  0x4d  M
   KEY_N | KEY_SHIFT_ENABLE, //78  0x4e  N
   KEY_O | KEY_SHIFT_ENABLE, //79  0x4f  O
   KEY_P | KEY_SHIFT_ENABLE, //80  0x50  P
   KEY_Q | KEY_SHIFT_ENABLE, //81  0x51  Q
   KEY_R | KEY_SHIFT_ENABLE, //82  0x52  R
   KEY_S | KEY_SHIFT_ENABLE, //83  0x53  S
   KEY_T | KEY_SHIFT_ENABLE, //84  0x54  T
   KEY_U | KEY_SHIFT_ENABLE, //85  0x55  U
   KEY_V | KEY_SHIFT_ENABLE, //86  0x56  V
   KEY_W | KEY_SHIFT_ENABLE, //87  0x57  W
   KEY_X | KEY_SHIFT_ENABLE, //88  0x58  X
   KEY_Y | KEY_SHIFT_ENABLE, //89  0x59  Y
   KEY_Z | KEY_SHIFT_ENABLE, //90  0x5a  Z
   KEY_RIGHT_BRACE, //91  0x5b [
   HID_KEYBOARD_INTERNATIONAL3, //92  0x5c  バックスラッシュ
   KEY_BACKSLASH, //93  0x5d  ]
   KEY_EQUAL, //94  0x5e  ^
   HID_KEYBOARD_INTERNATIONAL1 | KEY_SHIFT_ENABLE, //95  0x5f  _
   KEY_LEFT_BRACE& KEY_SHIFT_ENABLE, //96  0x60  `
   KEY_A, //97  0x61  a
   KEY_B, //98  0x62  b
   KEY_C, //99  0x63  c
   KEY_D, //100 0x64  d
   KEY_E, //101 0x65  e
   KEY_F, //102 0x66  f
   KEY_G, //103 0x67  g
   KEY_H, //104 0x68  h
   KEY_I, //105 0x69  i
   KEY_J, //106 0x6a  j
   KEY_K, //107 0x6b  k
   KEY_L, //108 0x6c  l
   KEY_M, //109 0x6d  m
   KEY_N, //110 0x6e  n
   KEY_O, //111 0x6f  o
   KEY_P, //112 0x70  p
   KEY_Q, //113 0x71  q
   KEY_R, //114 0x72  r
   KEY_S, //115 0x73  s
   KEY_T, //116 0x74  t
   KEY_U, //117 0x75  u
   KEY_V, //118 0x76  v
   KEY_W, //119 0x77  w
   KEY_X, //120 0x78  x
   KEY_Y, //121 0x79  y
   KEY_Z, //122 0x7a  z
   KEY_RIGHT_BRACE | KEY_SHIFT_ENABLE, //123 0x7b  {
   HID_KEYBOARD_INTERNATIONAL3 | KEY_SHIFT_ENABLE, //124 0x7c  |
   KEY_BACKSLASH | KEY_SHIFT_ENABLE, //125 0x7d  }
   KEY_EQUAL | KEY_SHIFT_ENABLE, //126 0x7e  ~
   KEY_DELETE, //127 0x7f  DEL(削除)
   KEY_ERROR_UNDEFINED, //128 0x80
   KEY_ERROR_UNDEFINED, //129 0x81
   KEY_ERROR_UNDEFINED, //130 0x82
   KEY_ERROR_UNDEFINED, //131 0x83
   KEY_ERROR_UNDEFINED, //132 0x84
   KEY_ERROR_UNDEFINED, //133 0x85
   KEY_ERROR_UNDEFINED, //134 0x86
   KEY_ERROR_UNDEFINED, //135 0x87
   KEY_ERROR_UNDEFINED, //136 0x88
   KEY_ERROR_UNDEFINED, //137 0x89
   KEY_ERROR_UNDEFINED, //138 0x8A
   KEY_ERROR_UNDEFINED, //139 0x8B
   KEY_ERROR_UNDEFINED, //140 0x8C
   KEY_TILDE, //141 0x8D
   KEY_ERROR_UNDEFINED, //142 0x8E
   KEY_ERROR_UNDEFINED, //143 0x8F
   KEY_ERROR_UNDEFINED, //144 0x90
   KEY_CAPS_LOCK, //145 0x91
   KEY_F1, //146 0x92
   KEY_F2, //147 0x93
   KEY_F3, //148 0x94
   KEY_F4, //149 0x95
   KEY_F5, //150 0x96
   KEY_F6, //151 0x97
   KEY_F7, //152 0x98
   KEY_F8, //153 0x99
   KEY_F9, //154 0x9A
   KEY_F10, //155 0x9B
   KEY_F11, //156 0x9C
   KEY_F12, //157 0x9D
   KEY_PRINTSCREEN, //158 0x9E
   KEY_SCROLL_LOCK, //159 0x9F
   KEY_PAUSE, //160 0xA0
   KEY_INSERT, //161 0xA1
   KEY_HOME, //162 0xA2
   KEY_PAGE_UP, //163 0xA3
   KEY_DELETE, //164 0xA4
   KEY_END, //165 0xA5
   KEY_PAGE_DOWN, //166 0xA6
   KEY_RIGHT_ARROW, //167 0xA7
   KEY_LEFT_ARROW, //168 0xA8
   KEY_DOWN_ARROW, //169 0xA9
   KEY_UP_ARROW, //170 0xAA
   KEY_ERROR_UNDEFINED, //171 0xAB
   KEY_ERROR_UNDEFINED, //172 0xAC
   KEY_ERROR_UNDEFINED, //173 0xAD
   KEY_ERROR_UNDEFINED, //174 0xAE
   KEY_ERROR_UNDEFINED, //175 0xAF
   KEY_ERROR_UNDEFINED, //176 0xB0
   KEY_ERROR_UNDEFINED, //177 0xB1
   KEY_ERROR_UNDEFINED, //178 0xB2
   KEY_ERROR_UNDEFINED, //179 0xB3
   KEY_ERROR_UNDEFINED, //180 0xB4
   KEY_ERROR_UNDEFINED, //181 0xB5
   KEY_ERROR_UNDEFINED, //182 0xB6
   KEY_ERROR_UNDEFINED, //183 0xB7
   KEY_ERROR_UNDEFINED, //184 0xB8
   KEY_ERROR_UNDEFINED, //185 0xB9
   KEY_ERROR_UNDEFINED, //186 0xBA
   KEY_ERROR_UNDEFINED, //187 0xBB
   KEY_ERROR_UNDEFINED, //188 0xBC
   KEY_ERROR_UNDEFINED, //189 0xBD
   KEY_ERROR_UNDEFINED, //190 0xBE
   KEY_ERROR_UNDEFINED, //191 0xBF
   KEY_ERROR_UNDEFINED, //192 0xC0
   KEY_ERROR_UNDEFINED, //193 0xC1
   KEY_ERROR_UNDEFINED, //194 0xC2
   KEY_ERROR_UNDEFINED, //195 0xC3
   KEY_ERROR_UNDEFINED, //196 0xC4
   KEY_ERROR_UNDEFINED, //197 0xC5
   KEY_ERROR_UNDEFINED, //198 0xC6
   KEY_ERROR_UNDEFINED, //199 0xC7
   KEY_ERROR_UNDEFINED, //200 0xC8
   KEY_ERROR_UNDEFINED, //201 0xC9
   KEY_ERROR_UNDEFINED, //202 0xCA
   KEY_ERROR_UNDEFINED, //203 0xCB
   KEY_ERROR_UNDEFINED, //204 0xCC
   KEY_ERROR_UNDEFINED, //205 0xCD
   KEY_ERROR_UNDEFINED, //206 0xCE
   KEY_ERROR_UNDEFINED, //207 0xCF
   KEY_ERROR_UNDEFINED, //208 0xD0
   KEY_ERROR_UNDEFINED, //209 0xD1
   KEY_ERROR_UNDEFINED, //210 0xD2
   KEY_ERROR_UNDEFINED, //211 0xD3
   KEY_ERROR_UNDEFINED, //212 0xD4
   KEY_ERROR_UNDEFINED, //213 0xD5
   KEY_ERROR_UNDEFINED, //214 0xD6
   KEY_ERROR_UNDEFINED, //215 0xD7
   KEY_ERROR_UNDEFINED, //216 0xD8
   KEY_ERROR_UNDEFINED, //217 0xD9
   KEY_ERROR_UNDEFINED, //218 0xDA
   KEY_ERROR_UNDEFINED, //219 0xDB
   KEY_ERROR_UNDEFINED, //220 0xDC
   KEY_ERROR_UNDEFINED, //221 0xDD
   KEY_ERROR_UNDEFINED, //222 0xDE
   KEY_ERROR_UNDEFINED, //223 0xDF
   KEY_INTERNATIONAL2, //224 0xE0
   KEY_ERROR_UNDEFINED, //225 0xE1
   KEY_INTERNATIONAL4, //226 0xE2
   KEY_INTERNATIONAL5, //227 0xE3
   KEY_ERROR_UNDEFINED, //228 0xE4
   KEY_ERROR_UNDEFINED, //229 0xE5
   KEY_ERROR_UNDEFINED, //230 0xE6
   KEY_ERROR_UNDEFINED, //231 0xE7
   KEY_ERROR_UNDEFINED, //232 0xE8
   KEY_ERROR_UNDEFINED, //233 0xE9
   KEY_ERROR_UNDEFINED, //234 0xEA
   KEY_ERROR_UNDEFINED, //235 0xEB
   KEY_ERROR_UNDEFINED, //236 0xEC
   KEY_ERROR_UNDEFINED, //237 0xED
   KEY_ERROR_UNDEFINED, //238 0xEE
   KEY_ERROR_UNDEFINED, //239 0xEF
   KEY_ERROR_UNDEFINED, //240 0xF0
   KEY_ERROR_UNDEFINED, //241 0xF1
   KEY_ERROR_UNDEFINED, //242 0xF2
   KEY_ERROR_UNDEFINED, //243 0xF3
   KEY_ERROR_UNDEFINED, //244 0xF4
   KEY_ERROR_UNDEFINED, //245 0xF5
   KEY_ERROR_UNDEFINED, //246 0xF6
   KEY_ERROR_UNDEFINED, //247 0xF7
   KEY_LEFT_CTRL, //248 0xF8
   KEY_LEFT_SHIFT, //249 0xF9
   KEY_LEFT_ALT, //250 0xFA
   KEY_LEFT_GUI, //251 0xFB
   KEY_RIGHT_CTRL, //252 0xFC
   KEY_RIGHT_SHIFT, //253 0xFD
   KEY_RIGHT_ALT, //254 0xFE
   KEY_RIGHT_GUI, //255 0xFF
};

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite(LED_BUILTIN, HIGH);
  Serial1.begin(115200);
  Keyboard.begin();
}

void loop() {
  int len = Serial1.available(); // 受信データ長を確認
  for (int count = 0; count < len; count++) {
    byte inByte = Serial1.read();
    KeyboardKeycode key = (KeyboardKeycode)(KEYMap[inByte] & 0xFF);
    bool shiftEnable = (KEYMap[inByte] & KEY_SHIFT_ENABLE) != 0;
    
    // 左シフト以降の修飾キー
    if (inByte >= 0xF8) { 
      pushingModificationKey = pushingModificationKey | (0x01 << (0xFF - inByte)); // 装飾キーを保存
    } 
    // 無効キーの入力
    else if (key == KEY_ERROR_UNDEFINED) { 
      pushingModificationKey = 0; // 装飾キーを初期化
    } 
    // 通常キー
    else { 
      // 押されている装飾キーを入力(Ctrl+Shift+XXXのような多重入力にも対応)
      for (int count = 0; count < 8; count++) {
        if ((pushingModificationKey >> (7 - count) & 0x01) != 0) {
          Keyboard.press((KeyboardKeycode)(KEYMap[0xF8 + count] & 0xFF));
        }
      }
      // シフトが必要な入力の場合左シフト入力を行う
      if (shiftEnable) { 
        Keyboard.press(KEY_LEFT_SHIFT);
      }
      // キー入力
      Keyboard.press(key);
      // ディレイ中LEDを点灯
      digitalWrite(LED_BUILTIN, LOW);
      delay(KEY_RELEASE_DELAYTIME);
      digitalWrite(LED_BUILTIN, HIGH);
      // リリースしつつ装飾キーを初期化
      Keyboard.releaseAll();
      Serial1.write(Serial1.available()); // 残り受信バッファサイズを送信
      pushingModificationKey = 0;
    }
  }
}