Serial messages on USB and RX and TX pins.

Forum 2005-2010 (read only) Software Development
1

Hey Guys,

I have a transmitter and a receiver chip that I have connected to two arduino decilimas via TX and RX pins. When I write looping code that sends a signal every so many seconds it works. But when I use USB connection from my computer to send signals they no longer get sent. After lots of testing it appears that if I am using the Serial connection to talk to the computer via USB, I cannot use the TX pin.

Should I be able to do USB and talk to the TX pin at the same time using the Serial library? If not what are my other options? (custom serial on another pin or something called UART?)

Thanks,
Pooh

2

No you can't do anything else on the Rx or Tx pins whilst implimenting serial on these pins.

But an alternative is the Software Serial library. It uses software to impliment serial communication any of the digital pins (UART being Universal asynchronous receiver/transmitter).

It's all on the Arduino site and talked about in the forum...search!