PC88(Late type) to USB keyboard protocol converter
=======================================
Target MCU is ATMega32u2 but other USB capable AVR will also work.
README FIRST
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This converter is for TYPE-B keyboard. For keyboards other than TYPE-B,
change the mode switch on the back of the keyboard.
Stand the left foot on the back of the keyboard and there are two slits.
There is a mode change switch in the back of it.
When this switch is up, TYPE-B mode is set.
When connecting a keyboard to this adapter, be sure to set to TYPE-B mode.
Connector
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On host/converter:
5Pin mini DIN
___ ___
/ |_| \
/ 5 4 \
| 3 | 2 |
\_ 1 _/
\_____/
(receptacle)
Wiring: You can change this with editing config.h.
Pin mini DIN MCU
----------------------------------
1 5V VCC
2 GND GND
3 DATA RD2
4 NC
5 NC
Protocol
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Signal: Asynchronous, Positive logic, 20800bps, Least bit first
Frame format: 1-Start bit(Lo), 8-Data bits, non-Parity, 1-Stop bit
Build Firmware
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Just use 'make' to bild firmware for TMK PC88 converter.
$ make -f Makefile.unimap clean
$ make -f Makefile.unimap
To flash firmware
$ make -f Makefile.unimap dfu
then push button on converter to flash firmware.
If you are using ATMega32u4 based board instead of premade TMK PC88 converter(ATMega32u2) use following commands.
$ make -f Makefile.unimap.32u4 clean
$ make -f Makefile.unimap.32u4
$ make -f Makefile.unimap.32u4 dfu
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