For the idea to program an AVR via keyboard LEDs I now implemented some
piece of software.
I plan/would like to extend platforms to windows and graphical linux.
At the moment it just supports framebuffer terminals of linux.
It is slowly, it is tested, it works, and it should solve
chicken-egg-issue for most people satisfactory?
As physical layer the keyboard LEDs are used:
* SS/CS (chip select) : SCROLL LOCK LED
* MOSI : CAPS LOCK LED
* CLOCK : NUM LOCK LED
As input deals any key pressed: (use a optocoupler?)
* MISO == 1 <=> any regular key pressed
* ( MISO == 0 <=> NO key pressed )
(You can increase the speed if you omit MISO)
Useful comments are appreciated.