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Noticed this: http://hackaday.com/2010/12/14/make-your-own-minimalist-avr-isp/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29&utm_content=Google+Reader Which points to instructables page that simpleavr seems to have set up. Good going!

just tried again the spectrum analyzer comm. and has more info for u. during development, i alternatively do flashing (via mspdebug) and running the perl script (host comm.). and when i do that, i always need to unplug / replug the usb cable when i do the firmware flashing. looks to me that the launchpad usb controller have to be reset and clear some status when i use the two interfaces (hid and serial) alternatively. if i am not flashing and just run the host script, i can reliably start a session (host script sends start comm. and end comm. at each session), ends it and start a new s

the most detailed findings were on the google group thread bluehash mentioned, there is even a temporary patch u can try. all things points to the linux cdc-acm driver's way working w/ the ti 3410 chip. not that i am saying the cdc-acm driver is bad, but the device class is really designed for modems (use almost exclusively to talk to cell phones), there may be control logics that are like dtr signals, xon/xoff protocols and such, etc that doesn't apply to the launchpad's application. i can only speculate. the ti 3410 may have a limited size buffer and if it can't talk to the host ve

Probably of some help till savr replies: http://groups.google.com/group/ti-launc ... c8a4f00ab6