Okay, what's the trick to using multiple C files in AVRStudio with AVRGCC? I'm pretty sure the linker options aren't set up correctly, but I can't find any documentation on the Linker Options.
Let's say I write myUSART.c, myUSART.h, and TestUSART.c. I include myUSART.h in TestUSART.c. All these files are in the AVRGCC window. When I compile I get errors indicating that the calls from TestUSART.c of functions in myUSART.c are 'undefined reference'.
What am I missing?