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tmk_keyboard
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173
ADB.txt
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@ -1,173 +0,0 @@
ADB Protocol
============
Resources
---------
ADB - The Untold Story: Space Aliens Ate My Mouse
http://developer.apple.com/legacy/mac/library/#technotes/hw/hw_01.html
Apple IIgs Hardware Reference Second Edition [p80(Chapter6 p121)]
ftp://ftp.apple.asimov.net/pub/apple_II/documentation/Apple%20IIgs%20Hardware%20Reference.pdf
ADB Keycode
http://72.0.193.250/Documentation/macppc/adbkeycodes/
http://m0115.web.fc2.com/m0115.jpg
[Inside Macintosh volume V, pages 191-192]
ADB Signaling
http://kbdbabel.sourceforge.net/doc/kbd_signaling_pcxt_ps2_adb.pdf
ADB Overview & History
http://en.wikipedia.org/wiki/Apple_Desktop_Bus
Microchip Application Note: ADB device(with code for PIC16C)
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en011062
AVR ATtiny2131 ADB to PS/2 converter(Japanese)
http://hp.vector.co.jp/authors/VA000177/html/KeyBoardA5DEA5CBA5A2II.html
Pinouts
-------
ADB female socket from the front:
__________
| | <--- top
| 4o o3 |
|2o o1|
| == |
|________| <--- bottom
| | <--- 4pins
ADB female socket from bottom:
========== <--- front
| |
| |
|2o o1|
|4o o3|
---------- <--- back
1: Data
2: Power SW(low when press Power key)
3: Vcc(5V)
4: GND
Commands
--------
ADB command is 1byte and consists of 4bit-address, 2bit-command
type and 2bit-register. The commands are always sent by Host.
Command format:
7 6 5 4 3 2 1 0
| | | |------------ address
| |-------- command type
| |---- register
bits commands
------------------------------------------------------
- - - - 0 0 0 0 Send Request(reset all devices)
A A A A 0 0 0 1 Flush(reset a device)
- - - - 0 0 1 0 Reserved
- - - - 0 0 1 1 Reserved
- - - - 0 1 - - Reserved
A A A A 1 0 R R Listen(write to a device)
A A A A 1 1 R R Talk(read from a device)
The command to read keycodes from keyboard is 0x2C which
consist of keyboard address 2 and Talk against register 0.
Address:
2: keyboard
3: mice
Registers:
0: application(keyobard uses this to store its data.)
1: application
2: application(keyboard uses this for LEDs and state of modifiers)
3: status and command
Communication
-------------
This is a minimum information for keyboard communication.
See "Resources" for detail.
Signaling:
~~~~____________~~||||||||||||__~~~~~_~~|||||||||||||||__~~~~
|800us | |7 Command 0| | | |15-64 Data 0|Stopbit(0)
+Attention | | | +Startbit(1)
+Startbit(1) | +Tlt(140-260us)
+stopbit(0)
Bit cells:
bit0: ______~~~
65 :35us
bit1: ___~~~~~~
35 :65us
bit0 low time: 60-70% of bit cell(42-91us)
bit1 low time: 30-40% of bit cell(21-52us)
bit cell time: 70-130us
[from Apple IIgs Hardware Reference Second Edition]
Criterion for bit0/1:
After 55us if line is low/high then bit is 0/1.
Attention & start bit:
Host asserts low in 560-1040us then places start bit(1).
Tlt(Stop to Start):
Bus stays high in 140-260us then device places start bit(1).
Global reset:
Host asserts low in 2.8-5.2ms. All devices are forced to reset.
Send request from device(Srq):
Device can request to send at commad(Global only?) stop bit.
keep low for 300us to request.
Keyboard Data(Register0)
This 16bit data can contains two keycodes and two released flags.
First keycode is palced in upper byte. When one keyocode is sent,
lower byte is 0xFF.
Release flag is 1 when key is released.
1514 . . . . . 8 7 6 . . . . . 0
| | | | | | | | | +-+-+-+-+-+-+- Keycode2
| | | | | | | | +--------------- Released2(1 when the key is released)
| +-+-+-+-+-+-+----------------- Keycode1
+------------------------------- Released1(1 when the key is released)
Keycodes:
Scancode consists of 7bit keycode and 1bit release flag.
Device can send two keycodes at once. If just one keycode is sent
keycode1 contains it and keyocode2 is 0xFF.
Power switch:
You can read the state from PSW line(active low) however
the switch has a special scancode 0x7F7F, so you can
also read from Data line. It uses 0xFFFF for release scancode.
Keyboard LEDs & state of keys(Register2)
This register hold current state of three LEDs and nine keys.
The state of LEDs can be changed by sending Listen command.
1514 . . . . . . 7 6 5 . 3 2 1 0
| | | | | | | | | | | | | | | +- LED1(NumLock)
| | | | | | | | | | | | | | +--- LED2(CapsLock)
| | | | | | | | | | | | | +----- LED3(ScrollLock)
| | | | | | | | | | +-+-+------- Reserved
| | | | | | | | | +------------- ScrollLock
| | | | | | | | +--------------- NumLock
| | | | | | | +----------------- Apple/Command
| | | | | | +------------------- Option
| | | | | +--------------------- Shift
| | | | +----------------------- Control
| | | +------------------------- Reset/Power
| | +--------------------------- CapsLock
| +----------------------------- Delete
+------------------------------- Reserved
END_OF_ADB

35
README
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@ -1,16 +1,19 @@
t.m.k. Keyboard Firmware
========================
This is keyboard firmware for Teensy(AVR USB MCU) and V-USB board.
source code repository:
http://github.com/tmk/tmk_keyboard
This is keyboard firmware for AVR USB MCUs or Teensy/Teensy++.
http://www.pjrc.com/teensy
The project is heavily based on PJRC USB Keyboard/Mouse Example and
owes a debt to preceding keyboard firmware projects.
This firmware is used in following projects:
HHKB mod: http://geekhack.org/showwiki.php?title=Island:12047
Macway mod: http://geekhack.org/showwiki.php?title=Island:11930
PS2 to USB: http://geekhack.org/showwiki.php?title=Island:14618
ADB to USB: http://geekhack.org/showwiki.php?title=Island:14290
The project is heavily based on PJRC USB Keyboard/Mouse Example and
owes a debt to preceding keyboard firmware projects.
http://www.pjrc.com/teensy
Features
@ -31,12 +34,27 @@ Limitations
-----------
Files & Directories
-------------------
Target:
hhkb/ keyboard controller for PFU HHKB pro
macway/ keyboard controller for Macway mod
ps2_usb/ PS2 to USB keyboard converter
adb_usb/ ADB to USB keyboard converter
USB Protocol Stack:
pjrc/ PJRC USB stack
vusb/ V-USB USB stack
ps2.[ch] PS/2 protocol
adb.[ch] ADB protocol
Build
-----
To compile needs AVR GCC, AVR Libc and GNU make.
You can use WinAVR on Windows. http://winavr.sourceforge.net/
$ cd <target> (hhkb or macway currently)
$ cd <target>
$ make
The firmware will be compiled as a file tmk_<target>.hex.
@ -100,7 +118,8 @@ Build Options
Debuging & Rescue
-----------------
Use PJRC's hid_listen.exe to see debug messages.
Press right Control + Shift + Alt + GUI + H to debug menu.
Press <COMMAND> + H to debug menu.
(see config.h for <COMMAND> key combination.)
Pressing any 3 keys when connected enables debug output.
Pressing any 4 keys when connected makes bootloader comes up.

103
TODO
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@ -1,103 +0,0 @@
TODO & IDEAS
------------
Code cleaning
keymap layer definition
Debug/Config console
keymap/layer setting
layer switching timing
matrix display
help
display keymap
display matrix(row, col)
debug console
through PJRC console
through UART/USB CDC
mouse acceleration
store setting to EEPROM
Document
development
Interchangable protocol stack
USB
PJRC stack(default currently)
LUFA
original minimal stack for keyboard/mouse
PS/2
from keyboard-upgrade?
Layer switch
toggle layer switch
Debouncing logic
will be coded when bouncing occurs.
bouncing doesnt occur on my ALPS switch so far.
scan rate is too slow?(to be measure)
Child lock
disable keyboard to protect against atacking by child
Windows key blocking
disable Windows keys for gamers
OneHand operation
RAlt + Del(or \) to Alt + Tab
Licensings(GPL)
GPL will not be infringement of PJRC license.
Extra switch
foot sw for layer switching
mouse button
PS/2->USB keyboard converter
PS/2 keyboard host protocol support
PS/2,USB detection
act as PS/2 keyboard or USB keyboard.
PS/2 keyboard device protocol support
Thinkpad keyboard support
turn to USB keyboard/mouse composite device
Other MCU/board support
architectures on which GCC is available.
AT90USBKEY and other AVR USB boards
Cortex-M3 ARM board(STM32)
http://strawberry-linux.com/catalog/items?code=32105
Separate keyboard support
comunicate between keyboards by I2C?
this is for ergo keyoboard style.
DONE & STATUS
-------------
PS2 mouse bug to be FIX'd
macway/matrix: line select changes pins for mouse.
2010/01/02
support for HHKB pro matrix signal
exchange controller board with teensy
2010/10/11
OneHand operation
Matias half keyboard style
2010/10/23
souce code cleaning
2010/10/23
debug on/off
debug off by default
pressing keys during booting
2010/10/23
mouse horizontal wheel
http://www.microchip.com/forums/tm.aspx?high=&m=391435&mpage=1#391521
http://www.keil.com/forum/15671/
http://www.microsoft.com/whdc/device/input/wheel.mspx
2010/10/13
debug on/off
Fn key conbination during normal operation
matrix print on/off
key print on/off
mouse print on/off
2010/10/26
layer switching
time before switching
timeout when not used during specific time
2010/10/30
Build Option
windows media keys suport
2010/01/06
Document
build, customize
2010/01/06
Trackpoint(PS/2)
receive PS/2 signal from TrackPoint
2010/01/02
send USB HID report
EOF

213
adb.c
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@ -1,3 +1,39 @@
/*
Copyright (c) 2011 Jun WAKO <wakojun@gmail.com>
This software is licensed with a Modified BSD License.
All of this is supposed to be Free Software, Open Source, DFSG-free,
GPL-compatible, and OK to use in both free and proprietary applications.
Additions and corrections to this file are welcome.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of the copyright holders nor the names of
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdbool.h>
#include <util/delay.h>
#include <avr/io.h>
@ -191,3 +227,180 @@ static inline uint8_t wait_data_hi(uint8_t us)
}
return us;
}
/*
ADB Protocol
============
Resources
---------
ADB - The Untold Story: Space Aliens Ate My Mouse
http://developer.apple.com/legacy/mac/library/#technotes/hw/hw_01.html
Apple IIgs Hardware Reference Second Edition [p80(Chapter6 p121)]
ftp://ftp.apple.asimov.net/pub/apple_II/documentation/Apple%20IIgs%20Hardware%20Reference.pdf
ADB Keycode
http://72.0.193.250/Documentation/macppc/adbkeycodes/
http://m0115.web.fc2.com/m0115.jpg
[Inside Macintosh volume V, pages 191-192]
ADB Signaling
http://kbdbabel.sourceforge.net/doc/kbd_signaling_pcxt_ps2_adb.pdf
ADB Overview & History
http://en.wikipedia.org/wiki/Apple_Desktop_Bus
Microchip Application Note: ADB device(with code for PIC16C)
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1824&appnote=en011062
AVR ATtiny2131 ADB to PS/2 converter(Japanese)
http://hp.vector.co.jp/authors/VA000177/html/KeyBoardA5DEA5CBA5A2II.html
Pinouts
-------
ADB female socket from the front:
__________
| | <--- top
| 4o o3 |
|2o o1|
| == |
|________| <--- bottom
| | <--- 4pins
ADB female socket from bottom:
========== <--- front
| |
| |
|2o o1|
|4o o3|
---------- <--- back
1: Data
2: Power SW(low when press Power key)
3: Vcc(5V)
4: GND
Commands
--------
ADB command is 1byte and consists of 4bit-address, 2bit-command
type and 2bit-register. The commands are always sent by Host.
Command format:
7 6 5 4 3 2 1 0
| | | |------------ address
| |-------- command type
| |---- register
bits commands
------------------------------------------------------
- - - - 0 0 0 0 Send Request(reset all devices)
A A A A 0 0 0 1 Flush(reset a device)
- - - - 0 0 1 0 Reserved
- - - - 0 0 1 1 Reserved
- - - - 0 1 - - Reserved
A A A A 1 0 R R Listen(write to a device)
A A A A 1 1 R R Talk(read from a device)
The command to read keycodes from keyboard is 0x2C which
consist of keyboard address 2 and Talk against register 0.
Address:
2: keyboard
3: mice
Registers:
0: application(keyobard uses this to store its data.)
1: application
2: application(keyboard uses this for LEDs and state of modifiers)
3: status and command
Communication
-------------
This is a minimum information for keyboard communication.
See "Resources" for detail.
Signaling:
~~~~____________~~||||||||||||__~~~~~_~~|||||||||||||||__~~~~
|800us | |7 Command 0| | | |15-64 Data 0|Stopbit(0)
+Attention | | | +Startbit(1)
+Startbit(1) | +Tlt(140-260us)
+stopbit(0)
Bit cells:
bit0: ______~~~
65 :35us
bit1: ___~~~~~~
35 :65us
bit0 low time: 60-70% of bit cell(42-91us)
bit1 low time: 30-40% of bit cell(21-52us)
bit cell time: 70-130us
[from Apple IIgs Hardware Reference Second Edition]
Criterion for bit0/1:
After 55us if line is low/high then bit is 0/1.
Attention & start bit:
Host asserts low in 560-1040us then places start bit(1).
Tlt(Stop to Start):
Bus stays high in 140-260us then device places start bit(1).
Global reset:
Host asserts low in 2.8-5.2ms. All devices are forced to reset.
Send request from device(Srq):
Device can request to send at commad(Global only?) stop bit.
keep low for 300us to request.
Keyboard Data(Register0)
This 16bit data can contains two keycodes and two released flags.
First keycode is palced in upper byte. When one keyocode is sent,
lower byte is 0xFF.
Release flag is 1 when key is released.
1514 . . . . . 8 7 6 . . . . . 0
| | | | | | | | | +-+-+-+-+-+-+- Keycode2
| | | | | | | | +--------------- Released2(1 when the key is released)
| +-+-+-+-+-+-+----------------- Keycode1
+------------------------------- Released1(1 when the key is released)
Keycodes:
Scancode consists of 7bit keycode and 1bit release flag.
Device can send two keycodes at once. If just one keycode is sent
keycode1 contains it and keyocode2 is 0xFF.
Power switch:
You can read the state from PSW line(active low) however
the switch has a special scancode 0x7F7F, so you can
also read from Data line. It uses 0xFFFF for release scancode.
Keyboard LEDs & state of keys(Register2)
This register hold current state of three LEDs and nine keys.
The state of LEDs can be changed by sending Listen command.
1514 . . . . . . 7 6 5 . 3 2 1 0
| | | | | | | | | | | | | | | +- LED1(NumLock)
| | | | | | | | | | | | | | +--- LED2(CapsLock)
| | | | | | | | | | | | | +----- LED3(ScrollLock)
| | | | | | | | | | +-+-+------- Reserved
| | | | | | | | | +------------- ScrollLock
| | | | | | | | +--------------- NumLock
| | | | | | | +----------------- Apple/Command
| | | | | | +------------------- Option
| | | | | +--------------------- Shift
| | | | +----------------------- Control
| | | +------------------------- Reset/Power
| | +--------------------------- CapsLock
| +----------------------------- Delete
+------------------------------- Reserved
END_OF_ADB
*/

0
pjrc/usb.c Executable file → Normal file
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