tmk 7860d09914 Change TMK_DIR setting %!s(int64=10) %!d(string=hai) anos
..
Makefile 7860d09914 Change TMK_DIR setting %!s(int64=10) %!d(string=hai) anos
README 3ee5f565ae Spellchecking converter README files. %!s(int64=11) %!d(string=hai) anos
config.h 92cda14f7a Add ascii_usb ASCII Serial Console terminal converter %!s(int64=11) %!d(string=hai) anos
keymap.c e2077cad45 Change key_t to keypos_t %!s(int64=10) %!d(string=hai) anos
led.c 92cda14f7a Add ascii_usb ASCII Serial Console terminal converter %!s(int64=11) %!d(string=hai) anos
matrix.c 92cda14f7a Add ascii_usb ASCII Serial Console terminal converter %!s(int64=11) %!d(string=hai) anos

README

ASCII to USB keyboard protocol converter
========================================
This converts serial console terminal into USB keyboard, tested with TRS-80 model 100 TELCOM application.
Target MCU is ATMega32u4 but other USB capable AVR will also work.


Hardware
--------
Connect RX, TX and GND to UART pin of AVR. Note that you may need line driver/level shifter like MAX232 to interface high voltage of RS-232C.



Build Firmware
--------------
Configure UART setting and Just use 'make'

$ cd ascii_usb
$ make

Then, load the binary to MCU with your favorite programmer.



Limitation
----------
- This cannot see key up event, you cannot hold a key.
- Alt, Gui(Win/Mac) modifier key are not available.



TRS-80 model 100
----------------
Use TELCOM program with setting: 19200bps/8bit/odd parity/1stop bit
To set this configuration push Stat(F3) and input '9801D,10'. Then push Term(F4) to connect.