AVR-Chat

I am working on a temp datalogger. I am using a mega16 using CodeVision and Visual Basic 2008. So far all is working.

Does anyone know of a tutorial or book that would show/teach me communication protocols using the USART? I know there are other forms of comms but I am wanting to use the USART. I can do this by sending a byte to the micro and what that value is the micro would jump to a subroutine, but if there is a better way I don't want to reinvent the wheel.

I have searched this site, the net and AVR Freaks but there is so much information and so many variations it takes a long time to go through. I figured this would be more direct.

Brian