I want to ask how can be "created" a new TXD because I need two TX and the first one is working. I wanted to switch to an ATmega128 but my request was denied, so I'm stuck at this point, how to create a new TXD.
Also the frame must be something like this:
0|byte|1 when all the frame is 1 that would mean that the buffer is empty.
And when that frame is sent, another ATmega8 must receive that value.