Xbee constantly TX ÿ

Projects Networking, Protocols, and Devices
1

I'm using a pair of Xbee to trasmit an receive data from the arduino to the PC (with an USB to ZigBee module). It was working ok, but today when I opened the serial monitor the xbee from the arduino was constantly transmitting the character ÿ. I notice that the TX light on the arduino xbee module is now allways on, but very dim(almost unnoticeable). When I connect the USB cable to de arduino to check, it works OK sending and receiving data with the serial monitor, so the problem must be de xbee module.

BTW im using the xbee module "right out of the box", I didn't configure anything. The arduino module jumper is set to UART.

Any ideas?

2

The ÿ character is the representation of -1, which is what Serial.read() returns when there is nothing in the serial buffer to read. You are checking Serial.available() before reading?

3

Thank you for your answer dxw00d.

Yes I am, the code was working with no problems before, I didn't change anything. Something must go wrong with the xbee itself or the xbee module. It`s TX all the time... Maybe I need to reconfigure the xbee or something...

4

BTW im using the xbee module "right out of the box", I didn't configure anything. The arduino module jumper is set to UART.

Any ideas?

Has that ever worked for anybody? I'm not aware that it has. As far as I know, every XBee needs to be configured. At least, if you want any kind of performance and security, you need to.

5

I'm looking for a tutorial on basic configuration. Xbee Adapter - wireless Arduino programming will this do the job?

6

will this do the job?

If you have series 1 models, yes. Though there is no reason to be diddling with the I/O pins, in your case.

All you need to set is PAN ID, MY, and DL. MY on one is DL on the other, and neither should be 0.