PS/2 to USB keyboard converter ============================== This firmware converts PS/2 keyboard protocol to USB. Demostration build ------------------ In this demo build, you can try several layouts, mouse keys and USB NKRO. Special keys: Magic+0: Qwerty with mouse keys(default) Magic+1: Qwerty Magic+2: Colemak Magic+3: Dvorak Magic+4: Workman Magic+N: toggles NKRO/6KRO(6KRO by default) Magic+Esc: sends Power Event where Magic=(LShift+RShift) or (LControl+RShift) Keybinds: Fn0+(hjkl): Mouse key move(vi cursor) Fn0+(yuio): Mouse wheel(left,down,up,right) Fn0+space: Mouse button1 Fn0+(mnb): Mouse buttons(1,2,3) Fn0+(zxc): Media control(Volup, Voldown, Mute) Fn1+(hjkl): Cursor move(vi cursor) Fn1+(nm,.): Cursor move(Home,PageDown,PageUp,End) Fn2+(esdf): Mouse key move(invert T cursor) Fn2+(qwrt): Mouse wheel(left,down,up,right) Fn2+space: Mouse button1 Fn2+(,./): Media control(Volup, Voldown, Mute) where Fn0=;, Fn1=/, Fn2=a Features -------- Mouse keys You can emulates mouse move and button click using keyboard. System/Media control You can sends Power event, Volume down/up and Mute. USB NKRO(actually 120KRO+8Modifiers) You can tolggles NKRO/6KRO.(Not tested on Mac.) Keymap customization You can customize keymaps easily by editing source code. Build for Teensy ---------------- 0. Connect PS/2 keyboard to Teensy by 4 lines(Vcc, GND, Data, Clock). 1. Define following macros for PS/2 connection in config_pjrc.h: PS2_DATA_PORT PS2_DATA_PIN PS2_DATA_DDR PS2_DATA_BIT PS2_CLOCK_PORT PS2_CLOCK_PIN PS2_CLOCK_DDR PS2_CLOCK_BIT 2. Edit Makefile for build options and MCU setting. 2. make 3. program Teensy. http://www.pjrc.com/teensy/loader.html Build for V-USB --------------- 0. Build V-USB controller board and connect PS/2 keyboard. 1. Define macros in config_vusb.h if needed. 2. Edit Makefile.vusb for build options and MCU setting. 3. make -f Makefile.vusb 4. program your V-USB controller. V-USB Circuit ------------- +---+ +---------------+ USB GND | | ATmega168 | === C3 | | 5V <-------+--------+---|Vcc,AVCC | PS/2 R1 | | ==== D- <----+--+-----R2-----|INT0 RXD|------->DATA D+ <----|---+----R3-----|INT1 XCK|------->CLOCK Z1 Z2 | | ->5V GND<----+---+--+--+-----|GND | ->GND | | | | | C2-+--|XTAL1 | | X1 | | +--C3-+--|XTAL2 | +---------------+ R1: 1.5K Ohm R2,R3: 68 Ohm Z1,Z2: Zenner 3.6V C1,C2: 22pF C3: 0.1uF X1: Crystal 20MHz(16MHz/12MHz) Keymap ------ You can change a keymap by editing code of keymap.c like following. How to define the keymap is probably obvious. You can find key symbols in usb_keycodes.h. If you want to define more than one keymap, see hhkb/keymap.c and macway/keymap.c as examples. To define keymap(layer) switching may needs a bit of your 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|Slp|Wak| * `---' `---------------' `---------------' `---------------' `-----------' `-----------' * ,-----------------------------------------------------------. ,-----------. ,---------------. * | `| 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 |Alt |Gui |Menu|Ctrl| |Lef|Dow|Rig| | 0| .| | * `-----------------------------------------------------------' `-----------' `---------------' */ KEYMAP( ESC, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, PSCR,SLCK,BRK, PWR, F13, F14, GRV, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, BSPC, INS, HOME,PGUP, NLCK,PSLS,PAST,PMNS, TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC,BSLS, DEL, END, PGDN, P7, P8, P9, 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, RALT,RGUI,APP, RCTL, LEFT,DOWN,RGHT, P0, PDOT,PENT ), EOF