Hi community. In " http://matrixstorm.com/avr/tinyusbboard/#chickenoregg " I tried to list a few options to initially program an AVR without having an AVR. Perhaps you can help me to improve/extend this list? Useful comments are appreciated. Best regards, Stephan
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. Best regards, Stephan
Hi again. For everybody who might be interested: The software now does support Microsoft Windows, too. http://matrixstorm.com/avr/tinyusbboard/bootloader/keyboardasp_v1.zip I hope to get some feedback. Useful comments always are appreciated. Best regards, Stephan
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