I was able to add a couple features to the XBee classes that may be of interest. I can share if interested.
1) Configuration File management:
Allows you to manage XBee AT commands in a txt file and load them each time the
XBee starts up.
2) Auto Baud Detection
Allows you to dynamically change the XBee baud rate (maybe in the config file)
And the start-up baud rate will be auto discovered.
3) SD Card buffering for larger messages.
I needed to send larger data packets so I needed to stitch XBee packets together.
This series of classes do that through the SD card.
4) couple minor bug fixes.