AVR-Chat

Hi Yingdan,

You need to learn about I2C interfaces. You can find data at the Atmel and 
AVRFreaks sites on this as well as other places.

Zack

On Fri, 26 Sep 2008, Yingdan wrote:

> Hi everyone,
>
> I am new to here and this is my first post. And I am totally new to
> circuitry.
>
> I only had experience of sending and receiving data between a computer
> and a microcontroller. I want to learn how 2 atmel microcontrollers
> communicate. The scenario is like this:
>
> A microcontroller is connected to my PC, when another microcotroller
> is connected to the 1st one, it can be powered and send its id to the
> computer. Later on, I want to have multiple microcontrollers and my PC
> should be able to figure out the topology.
>
> Many thanks,
> Yingdan
>
>