1 PS/2 to USB keyboard converter
2 ==============================
3 This firmware converts PS/2 keyboard protocol to USB and for now supports only Scan Code Set 2.
4 This will works on USB AVR(ATMega32U4, AT90USB) or V-USB.
10 You can emulates mouse move and button click using keyboard.
12 You can sends Power event, Volume down/up and Mute.
13 USB NKRO(actually 120KRO+8Modifiers)
14 You can tolggles NKRO feature.
16 You can customize keymaps easily by editing source code. See keymap.c.
19 PS/2 signal handling implementations
20 ------------------------------------
21 Following three methods are used to implement PS/2 signal handling.
22 a. Simple and stupid wait & read loop(intensive use of cycles)
23 This is implemented with (expected) portable C code for reference. See ps2.c.
26 c. Using USART hardware module(no cycle needed)
27 This uses AVR USART function to recevie PS/2 signal and be used in V-USB converter.
33 Connect PS/2 keyboard into Teensy with 4 lines(Vcc, GND, Data, Clock).
34 For a. Simple and stupid and b. Interrupt implementaion:
35 By default Clock is on PF0 and Data on PF1.
36 You can change this pin configuration by editing config_pjrc.h.
37 In this photo Vcc is yellow, GND is green, Data is red and Clock is black.
38 http://img17.imageshack.us/img17/7243/201101181933.jpg
39 For c. USART implementation:
40 In case of Teensny(ATMega32u4) CLock is on PD2 and Data on PD5.
45 1. Edit Makefile for build options and MCU setting.
46 Use 'atmega32u4' for Teensy 2.0 or 'at90usb1286' for Teensy++ 2.0.
48 Just type 'make' in a terminal.
49 Use '-f Makefile.pjrc_intr' option to use b. Interrupt.
50 Use '-f Makefile.pjrc_usart' option to use c. USART.
51 Use '-f Makefile.vusb' option to build V-USB converter.
52 3. program with Teensy Loader.
53 http://www.pjrc.com/teensy/loader.html
56 Demonstration of Features
57 -------------------------
58 In default configuration, you can try several keymaps, mousekeys and USB NKRO.
59 Use following magic key combinations to enable some features.
62 Magic+0: Qwerty with mousekeys(default)
63 Magic+1: Qwerty without mousekeys
67 Magic+N: toggles NKRO/6KRO(6KRO by default)
68 Magic+Esc: sends Power Event(Power button)
70 where Magic=(LShift+RShift) or (LControl+RShift)
73 Fn0+(hjkl): Mousekey move(vi cursor like)
74 Fn0+(yuio): Mouse wheel(left,down,up,right)
75 Fn0+space: Mouse left button
76 Fn0+(mnb): Mouse buttons(m=left, n=right, b=middle)
77 Fn0+(zxc): Media control(Volup, Voldown, Mute)
78 Fn1+(hjkl): Cursor move(vi cursor like)
79 Fn1+(nm,.): Cursor move(Home,PageDown,PageUp,End)
86 You can change a keymap by editing code of keymap.c like following.
87 How to define the keymap is probably obvious. You can find key symbols in usb_keycodes.h.
88 To define keymap layer switching may needs a bit of your effort at this time.
90 /* Default Layer: plain keymap
91 * ,---. ,---------------. ,---------------. ,---------------. ,-----------. ,-----------.
92 * |Esc| |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau| |Pwr|Slp|Wak|
93 * `---' `---------------' `---------------' `---------------' `-----------' `-----------'
94 * ,-----------------------------------------------------------. ,-----------. ,---------------.
95 * | `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backspa| |Ins|Hom|PgU| |NmL| /| *| -|
96 * |-----------------------------------------------------------| |-----------| |---------------|
97 * |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| \| |Del|End|PgD| | 7| 8| 9| |
98 * |-----------------------------------------------------------| `-----------' |-----------| +|
99 * |CapsLo| A| S| D| F| G| H| J| K| L| ;| '|Return | | 4| 5| 6| |
100 * |-----------------------------------------------------------| ,---. |---------------|
101 * |Shift | Z| X| C| V| B| N| M| ,| ,| /|Shift | |Up | | 1| 2| 3| |
102 * |-----------------------------------------------------------| ,-----------. |-----------|Ent|
103 * |Ctrl |Gui |Alt | Space |Alt |Gui |Menu|Ctrl| |Lef|Dow|Rig| | 0| .| |
104 * `-----------------------------------------------------------' `-----------' `---------------'
107 ESC, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, PSCR,SLCK,BRK, PWR, F13, F14,
108 GRV, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, BSPC, INS, HOME,PGUP, NLCK,PSLS,PAST,PMNS,
109 TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC,BSLS, DEL, END, PGDN, P7, P8, P9,
110 CAPS,A, S, D, F, G, H, J, K, L, SCLN,QUOT, ENT, P4, P5, P6, PPLS,
111 LSFT,Z, X, C, V, B, N, M, COMM,DOT, SLSH, RSFT, UP, P1, P2, P3,
112 LCTL,LGUI,LALT, SPC, RALT,RGUI,APP, RCTL, LEFT,DOWN,RGHT, P0, PDOT,PENT