tmk
11 years ago
parent
d2a83dae8f
commit
e3bcdd8211
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PS/2 to USB keyboard converter
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==============================
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This firmware converts PS/2 keyboard protocol to USB and supports only Scan Code Set 2.
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This will works on USB AVR(ATMega32U4, AT90USB) or V-USB(ATMega168, 328...).
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Features
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--------
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Mouse keys
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You can emulates mouse move and button click using keyboard.
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System/Media control
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You can sends Power event, Volume down/up and Mute.
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USB NKRO(actually 120KRO+8Modifiers)
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You can tolggles NKRO feature.
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Keymap customization
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You can customize keymaps easily by editing source code. See keymap.c.
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PS/2 signal handling implementations
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------------------------------------
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Following three methods are used to implement PS/2 signal handling.
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a. Simple and stupid busy-wait(ps2.c)
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This is expected to implemented with portable C code for reference.
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b. Interrupt driven(ps2.c)
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Uses external interrupt to detect falling edge of clock line.
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c. USART hardware module(ps2_usart.c)
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Uses AVR USART engine to recevie PS/2 signal. Recomended and default.
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This is required to work with V-USB, preceding two methods tend to
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miss signal edges while V-USB handles USB.
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To select method edit Makefile.
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Connect Wires
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-------------
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In case of Teensy2.0(ATMega32U4):
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0. Connect Vcc and GND.
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1. Connect Clock and Data line.
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For a. Clock is on PF0 and Data on PF1.
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For b. Clock is on PD1 and Data on PD2.
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For c. Clock is on PD5 and Data on PD2.
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2. Optionally you need pull-up register. 1K-10K Ohm is OK.
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To change pin configuration edit config.h.
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Build Frimware
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--------------
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1. Edit Makefile for build options and MCU setting.
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Use 'atmega32u4' for Teensy 2.0 or 'at90usb1286' for Teensy++ 2.0.
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2. make
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Just type `make` in a terminal.
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Use `-f Makefile.vusb` option to build V-USB converter.
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Use `-f Makefile.jis` option to use JIS keyboard.
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3. program MCU.
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In case of Teensy use `Teensy Loader`.(http://www.pjrc.com/teensy/loader.html)
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Otherwise you want to use `avrdude` or `dfu-programmer`.
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Demonstration of Features
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-------------------------
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In default configuration, you can try several keymaps, mousekeys and USB NKRO.
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Use following magic key combinations to enable some features.
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keymaps and NKRO:
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Magic+0: Qwerty with mousekeys(default)
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Magic+1: Qwerty without mousekeys
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Magic+2: Colemak
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Magic+3: Dvorak
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Magic+4: Workman
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Magic+N: toggles NKRO/6KRO(6KRO by default)
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Magic+Esc: sends Power Event(Power button)
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where Magic=(LShift+RShift) or (LControl+RShift)
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Fn layer function:
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Fn0+(hjkl): Mousekey move(vi cursor like)
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Fn0+(yuio): Mouse wheel(left,down,up,right)
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Fn0+space: Mouse left button
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Fn0+(mnb): Mouse buttons(m=left, n=right, b=middle)
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Fn0+(zxc): Media control(Volup, Voldown, Mute)
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Fn1+(hjkl): Cursor move(vi cursor like)
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Fn1+(nm,.): Cursor move(Home,PageDown,PageUp,End)
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where Fn0=;, Fn1=/
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Keymap
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------
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You can change a keymap by editing code of keymap. See common/keycode.h for key symbols.
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V-USB Support
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-------------
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You can also use this converter on ATmega(168/328) with V-USB instead of Teensy.
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The converter on V-USB lacks some features for now: USB NKRO and System/Media control.
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Circuit
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-------
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+---+ +---------------+
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USB GND | | ATmega168 |
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=== C3 | |
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5V <-------+--------+---|Vcc,AVCC | PS/2
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R1 | | ====
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D- <----+--+-----R2-----|INT1 RXD|------->DATA
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D+ <----|---+----R3-----|INT0 XCK|------->CLOCK
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Z1 Z2 | | ->5V
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GND<----+---+--+--+-----|GND | ->GND
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| C2-+--|XTAL1 |
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| X1 | |
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+--C3-+--|XTAL2 |
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+---------------+
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R1: 1.5K Ohm
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R2,R3: 68 Ohm
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Z1,Z2: Zenner 3.6V
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C1,C2: 22pF
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C3: 0.1uF
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X1: Crystal 20MHz(16MHz/12MHz)
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EOF
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@ -0,0 +1,76 @@
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PS/2 to USB keyboard converter
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==============================
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This firmware converts PS/2 keyboard protocol to USB and supports only Scan Code Set 2.
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PS/2 signal handling implementations
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------------------------------------
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Following three methods are used to implement PS/2 signal handling.
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### Simple and stupid busy-wait(ps2_busywait.c)
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This is expected to implemented with portable C code for reference.
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### Interrupt driven(ps2_interrupt.c)
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Uses pin interrupt to detect falling edge of clock line.
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### USART hardware module(ps2_usart.c)
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Uses AVR USART engine to recevie PS/2 signal.
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To select method edit Makefile.
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Connect Wires
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-------------
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In case of Teensy2.0(ATMega32U4):
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1. Connect Vcc and GND.
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2. Connect Clock and Data line.
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- Busywait: Clock is on PD5 and Data on PD2.
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- Interrupt: Clock is on PD1 and Data on PD2.
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- USART: Clock is on PD5 and Data on PD2.
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3. Optionally you need pull-up register. 1K-10K Ohm is OK.
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To change pin configuration edit config.h.
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Build Frimware
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--------------
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Just run `make`:
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$ make
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To select keymap:
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$ make KEYMAP=[plain|jis|spacefn|...]
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Keymap
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------
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Several version of keymap are available in advance but you are recommended to define your favorite layout yourself. To define your own keymap create file named `keymap_<name>.c` and see keymap document(you can find in top README.md) and existent keymap files.
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V-USB Support
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-------------
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You can also use this converter on ATmega(168/328) with V-USB instead of Teensy.
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The converter on V-USB lacks some features for now: USB NKRO and System/Media control.
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Circuit:
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+---+ +---------------+
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USB GND | | ATmega168 |
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=== C3 | |
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5V <-------+--------+---|Vcc,AVCC | PS/2
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R1 | | ====
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D- <----+--+-----R2-----|INT1 RXD|------->DATA
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D+ <----|---+----R3-----|INT0 XCK|------->CLOCK
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Z1 Z2 | | ->5V
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GND<----+---+--+--+-----|GND | ->GND
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| C2-+--|XTAL1 |
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| X1 | |
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+--C3-+--|XTAL2 |
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+---------------+
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R1: 1.5K Ohm
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R2,R3: 68 Ohm
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Z1,Z2: Zenner 3.6V
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C1,C2: 22pF
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C3: 0.1uF
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X1: Crystal 20MHz(16MHz/12MHz)
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@ -0,0 +1,61 @@
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/*
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* SpaceFN layout
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* http://geekhack.org/index.php?topic=51069.0
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*/
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#include "keymap_common.h"
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const uint8_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
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/* 0: default
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* ,---. ,---------------. ,---------------. ,---------------. ,-----------. ,-----------.
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* |Esc| |F1 |F2 |F3 |F4 | |F5 |F6 |F7 |F8 | |F9 |F10|F11|F12| |PrS|ScL|Pau| |Pwr|Slp|Wak|
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* `---' `---------------' `---------------' `---------------' `-----------' `-----------'
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* ,-----------------------------------------------------------. ,-----------. ,---------------.
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* | `| 1| 2| 3| 4| 5| 6| 7| 8| 9| 0| -| =|Backspa| |Ins|Hom|PgU| |NmL| /| *| -|
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* |-----------------------------------------------------------| |-----------| |---------------|
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* |Tab | Q| W| E| R| T| Y| U| I| O| P| [| ]| \| |Del|End|PgD| | 7| 8| 9| |
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* |-----------------------------------------------------------| `-----------' |-----------| +|
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* |CapsLo| A| S| D| F| G| H| J| K| L| ;| '|Return | | 4| 5| 6| |
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* |-----------------------------------------------------------| ,---. |---------------|
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* |Shift | Z| X| C| V| B| N| M| ,| ,| /|Shift | |Up | | 1| 2| 3| |
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* |-----------------------------------------------------------| ,-----------. |-----------|Ent|
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* |Ctrl |Gui |Alt | Space |Alt |Gui |Menu|Ctrl| |Lef|Dow|Rig| | 0| .| |
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* `-----------------------------------------------------------' `-----------' `---------------'
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*/
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KEYMAP(
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ESC, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, PSCR,SLCK,BRK,
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GRV, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, MINS,EQL, BSPC, INS, HOME,PGUP, NLCK,PSLS,PAST,PMNS,
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TAB, Q, W, E, R, T, Y, U, I, O, P, LBRC,RBRC,BSLS, DEL, END, PGDN, P7, P8, P9,
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CAPS,A, S, D, F, G, H, J, K, L, SCLN,QUOT, ENT, P4, P5, P6, PPLS,
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LSFT,Z, X, C, V, B, N, M, COMM,DOT, SLSH, RSFT, UP, P1, P2, P3,
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LCTL,LGUI,LALT, FN0, RALT,RGUI,APP, RCTL, LEFT,DOWN,RGHT, P0, PDOT,PENT
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),
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/* 1: SpaceFN
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* ,-----------------------------------------------------------.
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* |` | F1| F2| F3| F4| F5| F6| F7| F8| F9|F10|F11|F12|Delete |
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* |-----------------------------------------------------------|
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* | | | | | | | |Hom|Up |End|Psc|Slk|Pau|Ins |
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* |-----------------------------------------------------------|
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* | | | | | | |PgU|Lef|Dow|Rig| | | |
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* |-----------------------------------------------------------|
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* | | | | | |Spc|PgD|` |~ | | | |
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* |-----------------------------------------------------------|
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* | | | | | | | | |
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* `-----------------------------------------------------------'
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*/
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KEYMAP(
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ESC, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, PSCR,SLCK,BRK,
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GRV, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12, DEL, INS, HOME,PGUP, NLCK,PSLS,PAST,PMNS,
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TRNS,TRNS,TRNS,ESC, TRNS,TRNS,TRNS,HOME,UP, END, PSCR,SLCK,PAUS,INS, DEL, END, PGDN, P7, P8, P9,
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TRNS,TRNS,TRNS,TRNS,TRNS,TRNS,PGUP,LEFT,DOWN,RGHT,TRNS,TRNS, TRNS, P4, P5, P6, PPLS,
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TRNS,TRNS,TRNS,TRNS,TRNS,SPC, PGDN,GRV, FN1, TRNS,TRNS, TRNS, UP, P1, P2, P3,
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TRNS,TRNS,TRNS, TRNS, TRNS,TRNS,TRNS,TRNS, LEFT,DOWN,RGHT, P0, PDOT,PENT
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),
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};
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const uint16_t PROGMEM fn_actions[] = {
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[0] = ACTION_LAYER_TAP_KEY(1, KC_SPACE),
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[1] = ACTION_MODS_KEY(MOD_LSFT, KC_GRV), // tilde
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};
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