Objective Development Forums

What's your system clock? By default the driver is set to 12Mhz.

From the wiki: The ATmega328p has no non-p variant, but it's binary-compatible with the ATmega168, so compile for the ATmega168. This is a bad idea. The 328p has twice as much RAM as the 168, so the stackpointer will point to the wrong position (RAMEND of the 168) and the usable RAM is reduced by ha...

I also had some trouble to get the USBAsploader working on a ATMEGA328p although the code was working on an ATMEGA88 before. I discovered that the cause is a change in the identifier of the INT0 vector. V-USB is using the outdated "SIG_INTERRUPT0" as default in usbdrvasm.S (Line 60) which ...