JaredBayne.com

WiPort

Embedded Internet Server- The Wi-Fi enabled web server allows the robot to communicate with a terminal program over the internet. A wireless router must be within approximately 100 meters for the server to connect to, then anyone on the internet can operate the robot. With a more advanced wireless adapter, a range of up to 30 miles can be achieved.

Curently a Lantronix MatchPort is being used on the robot. This is the newer version of the WiPort. The functionality is identical, but the price is lower.

The ATmega128 microcontroller is connected to the MatchPort via RS232

communications. USART 1 on the microcontroller and CON1 on the

MatchPort are used. The following setup is configured for USART 1:

• Communication Parameters: 8 Data, 1 Stop, No Parity

• Mode: Asynchronous

• Baud rate: 9600

The MatchPort will then direct all serial communication from CON1 to the PC it is

connected with wirelessly. Using Lantronix’s Com Port Redirector program, any com

port on the PC can be rerouted to the MatchPort’s CON1.

The terminal on the PC side is configured the same as the USART of the

microcontroller. Any RS232 emulation terminal (such as HyperTerminal) can be used to

connect to the robot.

There is also a java applet loaded into the MatchPort’s memory. To access

the applet, the following address is entered into any internet browser:

http://xxx.xxx.xxx.xxx/applet.html

where xxx.xxx.xxx.xxx is the IP address of the MatchPort. A screenshot of this

applet is shown in figure 11. The basic code for the applet was obtained from

Lantronix's web site.

e-mail: JaredBayne at UMKC.edu