Fire Bird V ATMEGA2560 Hardware Manual
6.4 Robot control using XBee wireless communication module
Figure 6.3: XBee Wireless USB Module from NEX Robotics
Fire Bird V ATMEGA2560 has onboard socket for XBee and XBee Pro modules from Digi
International. For robot to PC communication we need to install XBee wireless module on the
robot and XBee USB wireless module for connection with the PC. XBee wireless module is
connected to the UART 0 of the ATMEGA2560 microcontroller. For Robot control over
wireless link we need to load “13C_Serial_Communication_ZigBee_wireless.hex” on the robot
which is located in the “Experiments” folder in the documentation CD. For XBee wireless
module installation on the robot, refer to chapter 5.
XBee USB wireless module has onboard FT232 USB to serial converter. You need to install
drivers for FT232 USB to serial converter before starting communication. software is located in
the “Software and Drivers \ CDM 2.06.00 WHQL Certified” folder. For driver installation
process refer to section 6.5.
For robot control over serial port we use Terminal software from NEX Robotics. It is located in
the “Software” folder in the documentation CD. Installation and the use of the terminal software
from NEX Robotics is covered in the section 6.7.
Important:
•
XBee wireless modules are factory set at the 9600 bps. While shipping with the robot
they are set at 115200 bps by NEX Robotics using XCTU software. Application example
“13C_Serial_Communication_ZigBee_wireless.hex” requires 9600 bps. For this
application you need to set baud rate at 9600 bps. How to change the baud rate of the
XBee wireless module using XCTU software is covered in the application note which is
located in the “Manuals and Application notes” folder in the documentation CD.
•
Wait for at least 8 seconds to start the wireless communication after turning on the robot
and the USB wireless module.
© NEX Robotics Pvt. Ltd. and ERTS Lab, CSE, IIT Bombay, INDIA 99