I2C software?

I'm getting an I2C based LCD display and am investigating how to get or write the I2C driver software to operate it. I've read the other posts regarding which traces to cut and how to access the pins. From what I've seen, the "twid.c" and "twi.c" drivers from atmel seem to be the best starting point. Is there a version of this software that's already been ported to FreeRTOS ? Also, if my software configures PA10 and PA11 for I2C is there any other software lurking about that might accidentally reconfigure these pins back to their original USB-related purposes ? Thanks, Bob

I haven't looked out there in the world for any FreeRTOS-ported TWI implementations, but that would definitely be a great start. As far as I know, if you use the Io system to lock those pins nothing else should be able to grab them until you release them.