Q: Question: I am trying to reverse engineer a device using xbees for communication. How would you suggest I connect to the serial line and copy the data to my computer and analyse it?
A: If you mean you want the XBee module to "listen" to the RF communications so you can see the packets, etc., it will not do that unless you can get into the shielded portion under the PCB and find the signal that connects the radio front end to the MCU in that section. The serial output on an XBee module doesn't provide that information. TI has "sniffer" software that will give you the packet information. It is a USB plug-in dongle and some free software. Cost is probably under $100. More elaborate sniffers and analyzers cost thousands.
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