Let's say I am trying to make a chat program like in the YouTube video XBee Basics - Lesson 2 - Simple Chat Program Between Two XBees in AT Mode.
In this video, he explained that one XBee is a sender which sends "Hello world" to the another XBee using Arduino.
However, is the XBee able to send and receive data at the same time? Are the routers able to communicate to the coordinator and the other way around?
Additionally, I want to write my own software to receive and send data and not using Arduino software. Are there any libraries and APIs?
Articles or videos would be nice.