82 lines
4.4 KiB
Markdown
82 lines
4.4 KiB
Markdown
|
ADB to USB keyboard converter
|
||
|
|
=============================
|
||
|
|
This firmware converts ADB keyboard protocol to USB.
|
||
|
|
You can use PJRC Teensy for this converter, though, other USB AVR(ATMega32U4, AT90USB64/128 or etc) should work.
|
||
|
|
But binary size is about 10KB or more it doesn't fit into 8K flash like ATMega8U2.
|
||
|
|
|
||
|
|
Discuss: http://geekhack.org/showwiki.php?title=Island:14290
|
||
|
|
|
||
|
|
|
||
|
|
Build
|
||
|
|
-----
|
||
|
|
0. Connect ADB keyboard to Teensy by 3 lines(Vcc, GND, Data). By default Data line uses port F0.
|
||
|
|
This converter uses AVR's internal pull-up, but it seems to be too weak, in particular when you want to use a long or coiled cable.
|
||
|
|
The external pull-up resistor(1K-10K Ohm) on Data is strongly recommended.
|
||
|
|
1. Define following macros for ADB connection in config.h if you use other than port F0.
|
||
|
|
ADB_PORT, ADB_PIN, ADB_DDR, ADB_DATA_BIT
|
||
|
|
2. make
|
||
|
|
3. program Teensy
|
||
|
|
|
||
|
|
|
||
|
|
LOCKING CAPSLOCK
|
||
|
|
----------------
|
||
|
|
Many old ADB keyboards have mechanical push-lock switch for Capslock key. This converter support the locking Capslock key by default.
|
||
|
|
This feature will prevent you from remaping as normal key. You can disable the feature by *commenting out* a macro in config.h like this:
|
||
|
|
|
||
|
|
//#define MATRIX_HAS_LOCKING_CAPS
|
||
|
|
|
||
|
|
Also you may want to remove locking pin from the push-lock switch to use capslock as a normal momentary switch.
|
||
|
|
http://www.youtube.com/watch?v=9wqnt2mGJ2Y
|
||
|
|
|
||
|
|
|
||
|
|
Keymap
|
||
|
|
------
|
||
|
|
You can change a keymap by editing code of keymap.c like following.
|
||
|
|
This is a keymap for AEK, however, also used for other keyboards.
|
||
|
|
How to define the keymap is probably obvious. You can find key symbols in usb_keycodes.h.
|
||
|
|
If you want to define some keymaps than just one, see hhkb/keymap.c and
|
||
|
|
macway/keymap.c as examples. Keymap(layer) switching may needs a bit of
|
||
|
|
effort at this time.
|
||
|
|
|
||
|
|
/* Default Layer: plain keymap
|
||
|
|
* ,---. ,---------------. ,---------------. ,---------------. ,-----------. ,---.
|
||
|
|
* |Esc| |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau| |Pwr|
|
||
|
|
* `---' `---------------' `---------------' `---------------' `-----------' `---'
|
||
|
|
* ,-----------------------------------------------------------. ,-----------. ,---------------.
|
||
|
|
* | `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backspa| |Ins|Hom|PgU| |NmL| =| /| *|
|
||
|
|
* |-----------------------------------------------------------| |-----------| |---------------|
|
||
|
|
* |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| \| |Del|End|PgD| | 7| 8| 9| -|
|
||
|
|
* |-----------------------------------------------------------| `-----------' |---------------|
|
||
|
|
* |CapsLo| A| S| D| F| G| H| J| K| L| ;| '|Return | | 4| 5| 6| +|
|
||
|
|
* |-----------------------------------------------------------| ,---. |---------------|
|
||
|
|
* |Shift | Z| X| C| V| B| N| M| ,| ,| /|Shift | |Up | | 1| 2| 3| |
|
||
|
|
* |-----------------------------------------------------------| ,-----------. |-----------|Ent|
|
||
|
|
* |Ctrl |Gui |Alt | Space | | | | |Lef|Dow|Rig| | 0| .| |
|
||
|
|
* `-----------------------------------------------------------' `-----------' `---------------'
|
||
|
|
*/
|
||
|
|
KEYMAP(
|
||
|
|
ESC, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, PSCR,SLCK,BRK, PWR,
|
||
|
|
GRV, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, BSPC, INS, HOME,PGUP, NLCK,EQL, PSLS,PAST,
|
||
|
|
TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC,BSLS, DEL, END, PGDN, P7, P8, P9, PMNS,
|
||
|
|
CAPS,A, S, D, F, G, H, J, K, L, SCLN,QUOT, ENT, P4, P5, P6, PPLS,
|
||
|
|
LSFT,Z, X, C, V, B, N, M, COMM,DOT, SLSH, RSFT, UP, P1, P2, P3,
|
||
|
|
LCTL,LGUI,LALT, SPC, LEFT,DOWN,RGHT, P0, PDOT,PENT
|
||
|
|
),
|
||
|
|
|
||
|
|
|
||
|
|
Magic command
|
||
|
|
-------------
|
||
|
|
To get help press `h` holding Magic key. Magic key is `Power key`.
|
||
|
|
|
||
|
|
|
||
|
|
Notes
|
||
|
|
-----
|
||
|
|
Many ADB keyboards has no discrimination between right modifier and left one,
|
||
|
|
you will always see left control even if you press right control key.
|
||
|
|
Apple Extended Keyboard and Apple Extended Keyboard II are the examples.
|
||
|
|
Though ADB protocol itsef has the ability of distinction between right and left.
|
||
|
|
And most ADB keyboard has no NKRO functionality, though ADB protocol itsef has that.
|
||
|
|
See protocol/adb.c for more info.
|
||
|
|
|
||
|
|
EOF
|