v3.0 cleanse files
This commit is contained in:
tmk
parent
d2b9489a5e
commit
00350c180d
173
ADB.txt
173
ADB.txt
@ -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
35
README
@ -1,16 +1,19 @@
|
|||||||
t.m.k. Keyboard Firmware
|
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
|
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:
|
This firmware is used in following projects:
|
||||||
HHKB mod: http://geekhack.org/showwiki.php?title=Island:12047
|
HHKB mod: http://geekhack.org/showwiki.php?title=Island:12047
|
||||||
Macway mod: http://geekhack.org/showwiki.php?title=Island:11930
|
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
|
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
|
Build
|
||||||
-----
|
-----
|
||||||
To compile needs AVR GCC, AVR Libc and GNU make.
|
To compile needs AVR GCC, AVR Libc and GNU make.
|
||||||
You can use WinAVR on Windows. http://winavr.sourceforge.net/
|
You can use WinAVR on Windows. http://winavr.sourceforge.net/
|
||||||
|
|
||||||
$ cd <target> (hhkb or macway currently)
|
$ cd <target>
|
||||||
$ make
|
$ make
|
||||||
|
|
||||||
The firmware will be compiled as a file tmk_<target>.hex.
|
The firmware will be compiled as a file tmk_<target>.hex.
|
||||||
@ -100,7 +118,8 @@ Build Options
|
|||||||
Debuging & Rescue
|
Debuging & Rescue
|
||||||
-----------------
|
-----------------
|
||||||
Use PJRC's hid_listen.exe to see debug messages.
|
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 3 keys when connected enables debug output.
|
||||||
Pressing any 4 keys when connected makes bootloader comes up.
|
Pressing any 4 keys when connected makes bootloader comes up.
|
||||||
|
|||||||
103
TODO
103
TODO
@ -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
213
adb.c
@ -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 <stdbool.h>
|
||||||
#include <util/delay.h>
|
#include <util/delay.h>
|
||||||
#include <avr/io.h>
|
#include <avr/io.h>
|
||||||
@ -191,3 +227,180 @@ static inline uint8_t wait_data_hi(uint8_t us)
|
|||||||
}
|
}
|
||||||
return 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
0
pjrc/usb.c
Executable file → Normal file
Loading…
Reference in New Issue
Block a user