My converter has a max485 in it, which is then hooked up to the max485 on my breadboard. So the output Rx/Tx pins from the max485 on the breadboard should be readable serial data right? I have it like this:PC --> converter/max485 ---> max485/breadboard ---> output rx/tx connected to each other (pins 1 and 4).So what can I do with the output from the max485 on the breadboard to test if it is working? I thoguht if I connected the output pins together it would loop back to the pc? I'm confused. Thanks for the help!-Sathi
difficult to create the full-duplex path needed
Quotedifficult to create the full-duplex path neededDifficult but not impossible. The way I see it, if you hooked it up as I described in my reply above, you could use SoftwareSerial, for example, to perform a test like the loopback test for RS232. Correct or not?
You and I are saying the same thing.
Do you need full duplex capability in order to upload a sketch to the atmega?
PapaG, I am going to give the test you suggested a try. Seems like a good way to see if the max485 I have is broken. I had not been using hardware or software serial in my previous tests for loopback, just typing some text into a hyperterminal on the serial port. If I am understanding this right I will first upload the software serial sketch to the atmega, and then I will wire this up and the PC should be able to read the serial prints that the atmega is reading in and then replying back with?
use the max232 to upload the finalized code to the rest of the atmega slaves,