Use software serial for Sun.
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tmk
@@ -1,20 +1,15 @@
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Sun to USB keyboard protocol converter
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======================================
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TODO
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----
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AVR UART engine expect positive logic while Sun keyboard signal is inverted serial.
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To use AVR UART engine you need inverter in front of RX and TX pin.
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Otherwise you can software serial routine to communicate the keyboard.
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Hardware
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--------
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Target MCU is ATMega32u4 but other USB capable AVR will also work.
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You can use PJRC Teensy as dev board.
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http://www.pjrc.com/teensy/
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Supported keyboards: Sun Type 5 Keyboard, CTCSP SHORT TYPE KEYBOARD(CKUB)
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CTCSP SHORT TYPE KEYBOARD: http://imgur.com/a/QIv6p
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Connector
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---------
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8Pin mini DIN
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___ ___
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/ |_| \
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@@ -24,118 +19,61 @@ Connector
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\_____/
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(receptacle)
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Wiring:
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Pin mini DIN Teensy
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----------------------------------
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1 GND GND
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2 GND GND
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3 5V
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4 RX/TX(Mouse)
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5 RX PD2
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6 TX PD3
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7 GND GND
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8 5V VCC
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Wiring:
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Pin mini DIN MCU
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----------------------------------
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1 GND GND
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2 GND GND
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3 5V
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4 RX/TX(Mouse)
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5 RX PD3
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6 TX PD2
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7 GND GND
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8 5V VCC
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Firmware
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Protocol
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--------
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Build:
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Singnal: Asynchronous, Negative logic, 1200baud, No Flow control
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Frame format: 1-Start bit, 8-Data bits, No-Parity, 1-Stop bit
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AVR USART engine expects positive logic while Sun keyboard signal is negative.
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To use AVR UART engine you need exteral inverter in front of RX and TX pin.
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Otherwise you can software serial routine to communicate the keyboard.
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This converter uses software method, you doesn't need any inverter part.
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Commands From System To Keyboard
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0x01 Reset
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Keyboard responds with following byte sequence:
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Success: 0xFF 0x04 0x7F
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Fail: 0x7E 0x01 0x7F
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0x02 Bell On
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0x03 Bell Off
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0x0A Click On
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0x0B Click Off
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0x0E LED
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followed by LED status byte:
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bit: 3 2 1 0
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LED: CapsLk ScrLk Compose NumLk
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0x0F Layout
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Keyboard responds with 'Layout Response' 0xFE 0xXX
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Commands From Keyboard To System
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0x7F Idle
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means no keys pressed.
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0xFE Layout Response
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0xFF Reset Response(followed by 0x04)
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Reference
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http://kentie.net/article/sunkbd/page2.htm
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http://kentie.net/article/sunkbd/KBD.pdf
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Build Firmware
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--------------
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Just use 'make'
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$ cd sun_usb
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$ make
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And load the binary to MCU with your favorite programmer.
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If you use Teensy you can load with PJRC Teensy Loader tool.
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http://www.pjrc.com/teensy/loader.html
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* * * * * * * * * * * * * * * * * *
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X68000 Keyboard Protocol
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========================
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http://kyoutan.jpn.org/uts/pc/pic/x68key/
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Connector
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---------
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Mini DIN 7pin(female connector on computer side)
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7 6 5
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o o o
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4 o = o 3
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o o
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2 1
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Mini-DIN
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-------------
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pin1 +5V
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pin2 MOUSE
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pin3 RXD
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pin4 TXD
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pin5 READY
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pin6 REMOTE
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pin7 GND
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Signaling
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---------
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- TXD,RXD
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Asynchronous, 2400baud, 1-startbit(L), 8-databit, 1-stopbit(H)
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- READY
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ready/not ready(1/0)
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Data from keyboard
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------------------
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bit 7 make/break flag(0/1)
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bit 6-0 following scan code
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Data from computer
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------------------
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- LED contorol ON/OFF(0/1)
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bit 7 1(fixed)
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bit 6 全角
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bit 5 ひらがな
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bit 4 INS
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bit 3 CAPS
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bit 2 コード入力
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bit 1 ローマ字
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bit 0 かな
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- Repeat delay
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bit 7 0(fixed)
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bit 6 1(fixed)
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bit 5 1(fixed)
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bit 4 0(fixed)
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bit 3-0 delay
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REPEAT_DELAY = 200+delay*100 ms
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default: 500ms
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- Repeat time
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bit 7 0(fixed)
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bit 6 1(fixed)
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bit 5 1(fixed)
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bit 4 1(fixed)
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bit 3-0 time
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REPEAT_TIME = 30+time^2*5 ms
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default: 110ms
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Scan Codes
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----------
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,---. ,---. ,-------------------, ,-------------------. ,-----------. ,---------------.
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| 61| | 62| | 63| 64| 65| 66| 67| | 68| 69| 6A| 6B| 6C| | 5A| 5B| 5C| | 5D| 52| 53| 54|
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`---' `---' `-------------------' `-------------------' `-----------' `---------------'
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,-----------------------------------------------------------. ,-----------. ,---------------.
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| 01| 02| 03| 04| 05| 06| 07| 08| 09| 0A| 0B| 0C| 0D| 0E| 0F| | 36| 5E| 37| | 3F| 40| 41| 42|
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|-----------------------------------------------------------| |------------ |---------------|
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| 10 | 11| 12| 13| 14| 15| 16| 17| 18| 19| 1A| 1B| 1C| | | 38| 39| 3A| | 43| 44| 45| 46|
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|------------------------------------------------------. 1D | `---=====---' |---------------|
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| 71 | 1E| 1F| 20| 21| 2l| 23| 24| 25| 26| 27| 28| 29| | ___| 3C|___ | 47| 48| 49| 4A|
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|-----------------------------------------------------------| | 3B|---| 3D| |-----------|---|
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| 70 | 2A| 2B| 2C| 2D| 2E| 2F| 30| 31| 32| 33| 34| 70 | `---| 3E|---' | 4B| 4C| 4D| |
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`-----------------------------------------------------------| .---=====---. |-----------| 4E|
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| 5F| 55 | 56 | 35 | 57 | 58 | 59 | 60| | 72 | 73 | | 4F| 50| 51| |
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`---------------------------------------------' `-----------' `---------------'
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Then, load the binary to MCU with your favorite programmer.
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