Hi
I’m just programming my first set of XBees so I’m no expert. However I’m looking at similar solutions.
If you just have 2 XBees I think AT is easier, you can just read the serial port and you have no decoding to do. Using API mode gives you more options but it’s more complex and you have to parse the frames that it uses.
I’m testing the radios using simple sensors and I’m using ZNET 2.5 COORDINATOR API and ZNET 2.5 ROUTER/END DEVICE API and they are talking fine.
I’m yet to explore the different feature sets of ZNET and ZIGBEE