You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
142 lines
3.6 KiB
142 lines
3.6 KiB
12 years ago
|
Sun to USB keyboard protocol converter
|
||
|
|
======================================
|
||
|
|
|
||
|
|
TODO
|
||
|
|
----
|
||
|
|
AVR UART engine expect positive logic while Sun keyboard signal is inverted serial.
|
||
|
|
To use AVR UART engine you need inverter in front of RX and TX pin.
|
||
|
|
Otherwise you can software serial routine to communicate the keyboard.
|
||
|
|
|
||
|
|
|
||
|
|
Hardware
|
||
|
|
--------
|
||
|
|
Target MCU is ATMega32u4 but other USB capable AVR will also work.
|
||
|
|
You can use PJRC Teensy as dev board.
|
||
|
|
http://www.pjrc.com/teensy/
|
||
|
|
|
||
|
|
Connector
|
||
|
|
8Pin mini DIN
|
||
|
|
___ ___
|
||
|
|
/ |_| \
|
||
|
|
/ 8 7 6 \
|
||
|
|
| 5 4 3 |
|
||
|
|
\_ 2 1 _/
|
||
|
|
\_____/
|
||
|
|
(receptacle)
|
||
|
|
|
||
|
|
Wiring:
|
||
|
|
Pin mini DIN Teensy
|
||
|
|
----------------------------------
|
||
|
|
1 GND GND
|
||
|
|
2 GND GND
|
||
|
|
3 5V
|
||
|
|
4 RX/TX(Mouse)
|
||
|
|
5 RX PD2
|
||
|
|
6 TX PD3
|
||
|
|
7 GND GND
|
||
|
|
8 5V VCC
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
Firmware
|
||
|
|
--------
|
||
|
|
Build:
|
||
|
|
$ cd sun_usb
|
||
|
|
$ make
|
||
|
|
|
||
|
|
And load the binary to MCU with your favorite programmer.
|
||
|
|
If you use Teensy you can load with PJRC Teensy Loader tool.
|
||
|
|
http://www.pjrc.com/teensy/loader.html
|
||
|
|
|
||
|
|
|
||
|
|
* * * * * * * * * * * * * * * * * *
|
||
|
|
|
||
|
|
|
||
|
|
X68000 Keyboard Protocol
|
||
|
|
========================
|
||
|
|
http://kyoutan.jpn.org/uts/pc/pic/x68key/
|
||
|
|
|
||
|
|
|
||
|
|
Connector
|
||
|
|
---------
|
||
|
|
Mini DIN 7pin(female connector on computer side)
|
||
|
|
7 6 5
|
||
|
|
o o o
|
||
|
|
4 o = o 3
|
||
|
|
o o
|
||
|
|
2 1
|
||
|
|
|
||
|
|
Mini-DIN
|
||
|
|
-------------
|
||
|
|
pin1 +5V
|
||
|
|
pin2 MOUSE
|
||
|
|
pin3 RXD
|
||
|
|
pin4 TXD
|
||
|
|
pin5 READY
|
||
|
|
pin6 REMOTE
|
||
|
|
pin7 GND
|
||
|
|
|
||
|
|
|
||
|
|
Signaling
|
||
|
|
---------
|
||
|
|
- TXD,RXD
|
||
|
|
Asynchronous, 2400baud, 1-startbit(L), 8-databit, 1-stopbit(H)
|
||
|
|
|
||
|
|
- READY
|
||
|
|
ready/not ready(1/0)
|
||
|
|
|
||
|
|
|
||
|
|
Data from keyboard
|
||
|
|
------------------
|
||
|
|
bit 7 make/break flag(0/1)
|
||
|
|
bit 6-0 following scan code
|
||
|
|
|
||
|
|
|
||
|
|
Data from computer
|
||
|
|
------------------
|
||
|
|
- LED contorol ON/OFF(0/1)
|
||
|
|
bit 7 1(fixed)
|
||
|
|
bit 6 全角
|
||
|
|
bit 5 ひらがな
|
||
|
|
bit 4 INS
|
||
|
|
bit 3 CAPS
|
||
|
|
bit 2 コード入力
|
||
|
|
bit 1 ローマ字
|
||
|
|
bit 0 かな
|
||
|
|
|
||
|
|
- Repeat delay
|
||
|
|
bit 7 0(fixed)
|
||
|
|
bit 6 1(fixed)
|
||
|
|
bit 5 1(fixed)
|
||
|
|
bit 4 0(fixed)
|
||
|
|
bit 3-0 delay
|
||
|
|
REPEAT_DELAY = 200+delay*100 ms
|
||
|
|
default: 500ms
|
||
|
|
|
||
|
|
- Repeat time
|
||
|
|
bit 7 0(fixed)
|
||
|
|
bit 6 1(fixed)
|
||
|
|
bit 5 1(fixed)
|
||
|
|
bit 4 1(fixed)
|
||
|
|
bit 3-0 time
|
||
|
|
REPEAT_TIME = 30+time^2*5 ms
|
||
|
|
default: 110ms
|
||
|
|
|
||
|
|
|
||
|
|
Scan Codes
|
||
|
|
----------
|
||
|
|
,---. ,---. ,-------------------, ,-------------------. ,-----------. ,---------------.
|
||
|
|
| 61| | 62| | 63| 64| 65| 66| 67| | 68| 69| 6A| 6B| 6C| | 5A| 5B| 5C| | 5D| 52| 53| 54|
|
||
|
|
`---' `---' `-------------------' `-------------------' `-----------' `---------------'
|
||
|
|
,-----------------------------------------------------------. ,-----------. ,---------------.
|
||
|
|
| 01| 02| 03| 04| 05| 06| 07| 08| 09| 0A| 0B| 0C| 0D| 0E| 0F| | 36| 5E| 37| | 3F| 40| 41| 42|
|
||
|
|
|-----------------------------------------------------------| |------------ |---------------|
|
||
|
|
| 10 | 11| 12| 13| 14| 15| 16| 17| 18| 19| 1A| 1B| 1C| | | 38| 39| 3A| | 43| 44| 45| 46|
|
||
|
|
|------------------------------------------------------. 1D | `---=====---' |---------------|
|
||
|
|
| 71 | 1E| 1F| 20| 21| 2l| 23| 24| 25| 26| 27| 28| 29| | ___| 3C|___ | 47| 48| 49| 4A|
|
||
|
|
|-----------------------------------------------------------| | 3B|---| 3D| |-----------|---|
|
||
|
|
| 70 | 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34| 70 | `---| 3E|---' | 4B| 4C| 4D| |
|
||
|
|
`-----------------------------------------------------------| .---=====---. |-----------| 4E|
|
||
|
|
| 5F| 55 | 56 | 35 | 57 | 58 | 59 | 60| | 72 | 73 | | 4F| 50| 51| |
|
||
|
|
`---------------------------------------------' `-----------' `---------------'
|