help uart to uart wiring
i need to refrase...
Im never going though a max...
i have to connect the AVR TX line to 2 different microcontrollers
on one of them, i see a vague schematic, where the TX line comes out of their micro and goes to a 1k ohm resistor then to the controll connector
when i connect it to a max232, data comes in nicely in the pc, all bytes correct
so i conclude its std uart output 5v=0, 0v =1, sound right?
i guess thats what the atmel wants too
the other one seems easy too...
i connected tx to rx, and send some bytes, the device responded
each device uses a different baud, but i only need to talk to one at a time
i guess i could use some kind of mux
but i figued, when im not talking to one, the other just gets garbage, and no harm done
so how should i wire it, and keep the uarts protected....
mitch