Hello
I am using Keyboard.h and transmitting standard keys to my PC fine (Pro Micro).
But, I know that the 'F' keys (F1, F2, F3 etc) don't have an ASCII code (as far as I am aware).
Same goes for the arrow keys and other 'speciality' keys.
Does anyone know of a way to tell the PC over the serial connection these keys have been pressed?
When in doubt, check the Arduino Reference.
To get a raw USB keycode through Keyboard.write(), Keyboard.press(), or Keyboard.release(), you have to add the magic number 136 to it.
USB CODE Keyboard() Key Location on US-en Keyboard
======== ========== ==============================
0 0x00 Reserved (no event indicated) *9
1 0x01 Keyboard ErrorRollOver *9
2 0x02 Keyboard POSTFail *9
3 0x03 Keyboard ErrorUndefined *9
4 0x04 140 0x8C Keyboard a and A *4
5 0x05 141 0x8D Keyboard b and B
6 0x06 142 0x8E Keyboard c and C *4
7 0x07 143 0x8F Keyboard d and D
8 0x08 144 0x90 Keyboard e and E
9 0x09 145 0x91 Keyboard f and F
10 0x0A 146 0x92 Keyboard g and G
11 0x0B 147 0x93 Keyboard h and H
12 0x0C 148 0x94 Keyboard i and I
13 0x0D 149 0x95 Keyboard j and J
14 0x0E 150 0x96 Keyboard k and K
15 0x0F 151 0x97 Keyboard l and L
16 0x10 152 0x98 Keyboard m and M *4
17 0x11 153 0x99 Keyboard n and N
18 0x12 154 0x9A Keyboard o and O *4
19 0x13 155 0x9B Keyboard p and P *4
20 0x14 156 0x9C Keyboard q and Q *4
21 0x15 157 0x9D Keyboard r and R
22 0x16 158 0x9E Keyboard s and S *4
23 0x17 159 0x9F Keyboard t and T
24 0x18 160 0xA0 Keyboard u and U
25 0x19 161 0xA1 Keyboard v and V
26 0x1A 162 0xA2 Keyboard w and W *4
27 0x1B 163 0xA3 Keyboard x and X *4
28 0x1C 164 0xA4 Keyboard y and Y *4
29 0x1D 165 0xA5 Keyboard z and Z *4
30 0x1E 166 0xA6 Keyboard 1 and ! *4
31 0x1F 167 0xA7 Keyboard 2 and @ *4
32 0x20 168 0xA8 Keyboard 3 and # *4
33 0x21 169 0xA9 Keyboard 4 and $ *4
34 0x22 170 0xAA Keyboard 5 and % *4
35 0x23 171 0xAB Keyboard 6 and ^ *4
36 0x24 172 0xAC Keyboard 7 and & *4
37 0x25 173 0xAD Keyboard 8 and * *4
38 0x26 174 0xAE Keyboard 9 and ( *4
39 0x27 175 0xAF Keyboard 0 and ) *4
40 0x28 176 0xB0 Keyboard Return (ENTER) *5
41 0x29 177 0xB1 Keyboard ESCAPE
42 0x2A 178 0xB2 Keyboard DELETE (Backspace) *13
43 0x2B 179 0xB3 Keyboard Tab
44 0x2C 180 0xB4 Keyboard Spacebar
45 0x2D 181 0xB5 Keyboard - and (underscore) *4
46 0x2E 182 0xB6 Keyboard = and + *4
47 0x2F 183 0xB7 Keyboard [ and { *4
48 0x30 184 0xB8 Keyboard ] and } *4
49 0x31 185 0xB9 Keyboard \ and |
50 0x32 186 0xBA Keyboard Non-US # and ~ *2
51 0x33 187 0xBB Keyboard ; and : *4
52 0x34 188 0xBC Keyboard ‘ and “ *4
53 0x35 189 0xBD Keyboard Grave Accent and Tilde *4
54 0x36 190 0xBE Keyboard , and < *4
55 0x37 191 0xBF Keyboard . and > *4
56 0x38 192 0xC0 Keyboard / and ? *4
57 0x39 193 0xC1 Keyboard Caps Lock *11
58 0x3A 194 0xC2 Keyboard F1
59 0x3B 195 0xC3 Keyboard F2
60 0x3C 196 0xC4 Keyboard F3
61 0x3D 197 0xC5 Keyboard F4
62 0x3E 198 0xC6 Keyboard F5
63 0x3F 199 0xC7 Keyboard F6
64 0x40 200 0xC8 Keyboard F7
65 0x41 201 0xC9 Keyboard F8
66 0x42 202 0xCA Keyboard F9
67 0x43 203 0xCB Keyboard F10
68 0x44 204 0xCC Keyboard F11
69 0x45 205 0xCD Keyboard F12
70 0x46 206 0xCE Keyboard PrintScreen *1
71 0x47 207 0xCF Keyboard Scroll Lock *11
72 0x48 208 0xD0 Keyboard Pause *1
73 0x49 209 0xD1 Keyboard Insert *1
74 0x4A 210 0xD2 Keyboard Home *1
75 0x4B 211 0xD3 Keyboard PageUp *1
76 0x4C 212 0xD4 Keyboard Delete Forward *1;*14
77 0x4D 213 0xD5 Keyboard End *1
78 0x4E 214 0xD6 Keyboard PageDown *1
79 0x4F 215 0xD7 Keyboard RightArrow *1
80 0x50 216 0xD8 Keyboard LeftArrow *1
81 0x51 217 0xD9 Keyboard DownArrow *1
82 0x52 218 0xDA Keyboard UpArrow *1
83 0x53 219 0xDB Keypad Num Lock and Clear *11
84 0x54 220 0xDC Keypad / *1
85 0x55 221 0xDD Keypad *
86 0x56 222 0xDE Keypad -
87 0x57 223 0xDF Keypad +
88 0x58 224 0xE0 Keypad ENTER *5
89 0x59 225 0xE1 Keypad 1 and End
90 0x5A 226 0xE2 Keypad 2 and Down Arrow
91 0x5B 227 0xE3 Keypad 3 and PageDn
92 0x5C 228 0xE4 Keypad 4 and Left Arrow
93 0x5D 229 0xE5 Keypad 5
94 0x5E 230 0xE6 Keypad 6 and Right Arrow
95 0x5F 231 0xE7 Keypad 7 and Home
96 0x60 232 0xE8 Keypad 8 and Up Arrow
97 0x61 233 0xE9 Keypad 9 and PageUp
98 0x62 234 0xEA Keypad 0 and Insert
99 0x63 235 0xEB Keypad . and Delete
100 0x64 236 0xEC Keyboard Non-US \ and | *3;*6
101 0x65 237 0xED Application *10
102 0x66 238 0xEE Keyboard Power *9
103 0x67 239 0xEF Keypad =
104 0x68 240 0xF0 Keyboard F13
105 0x69 241 0xF1 Keyboard F14
106 0x6A 242 0xF2 Keyboard F15
107 0x6B 243 0xF3 Keyboard F16
108 0x6C 244 0xF4 Keyboard F17
109 0x6D 245 0xF5 Keyboard F18
110 0x6E 246 0xF6 Keyboard F19
111 0x6F 247 0xF7 Keyboard F20
112 0x70 248 0xF8 Keyboard F21
113 0x71 249 0xF9 Keyboard F22
114 0x72 250 0xFA Keyboard F23
115 0x73 251 0xFB Keyboard F24
116 0x74 252 0xFC Keyboard Execute
117 0x75 253 0xFD Keyboard Help
118 0x76 254 0xFE Keyboard Menu
119 0x77 255 0xFF Keyboard Select
(END OF CODES REACHABLE FROM Keyboard.write)
Footnotes:
1 Usage of keys is not modified by the state of the Control, Alt, Shift or Num Lock keys. That is, a key does not send extra codes to compensate for the state of any Control, Alt, Shift or Num Lock keys.
2 Typical language mappings: US: | Belg: μ£ FrCa: <}> Dan:’* Dutch: <> Fren:*μ Ger: #’ Ital: ù§ LatAm: }] Nor:,* Span: }Ç Swed: ,* Swiss: $£ UK: #~.
3 Typical language mappings: Belg:<> FrCa:«°» Dan:<> Dutch:]|[ Fren:<> Ger:<|> Ital:<> LatAm:<> Nor:<> Span:<> Swed:<|> Swiss:<> UK:| Brazil: |.
4 Typically remapped for other languages in the host system.
5 Keyboard Enter and Keypad Enter generate different Usage codes.
6 Typically near the Left-Shift key in AT-102 implementations.
7 Example, Erase-EazeTM key.
8 Reserved for language-specific functions, such as Front End Processors and Input Method Editors.
9 Reserved for typical keyboard status or keyboard errors. Sent as a member of the keyboard array. Not a physical key.
10 Windows key for Windows 95, and “Compose.”
11 Implemented as a non-locking key; sent as member of an array.
12 Implemented as a locking key; sent as a toggle button. Available for legacy support; however, most systems should use the non-locking version of this key.
13 Backs up the cursor one position, deleting a character as it goes.
14 Deletesonecharacterwithoutchangingposition.
15 No function
16 No function
17 No function
18 No function
19 No function
20 No function
21 Toggle Double-Byte/Single-Byte mode.
22 Undefined, available for other Front End Language Processors.
23 Windowing environment key, examples are Microsoft Left Win key, Mac Left Apple key, Sun Left Meta key
24 Windowing environment key, examples are Microsoft
Thank you chaps