Example of sending a HTTP GET request through serial port when running a serial to Ethernet application.

Hardware Configuration:

Serial Device <–serial--> NetBurner Serial to Ethernet Device <–ethernet--> Internet

In this example we will be using a SB800EX as the "Serial Device", but this would typically be a microprocessor or FPGA with a UART that needs to communicate over a network. The source code in this file is an example of what you would need to implement in your own microprocessor to send a GET request through a NetBurner device to some other device on the network/Internet runnig a web server.

The code in the main.cpp source file was tested with the SB800EX, but should work with any of the NetBurner standard devices. A serial cable was connected from port 1 of the SB800EX to port 1 of the SBL2e development board. Since the SBL2e development board DB9 connector is cross-wired for RX and TX, all you need is a straight through serial cable.

SB800EX <–serial--> SBL2e <–ethernet--> Internet

The web page contacted is myip.dnsdynamic.com, which return the IP address of the HTTP GET request.

Software Configuration for SBL2e, serial port 1:

Running the SBL2e factory serial to Ethernet application. This was done through the web page, but you can also do it through serial AT commands.

1. Incoming TCP Settings: Uncheck Listen for Incoming Network Connections
2. Outgoing TCP Settings: Make outgoing connections: If serial data received
3. Outgoing TCP Settings: Connect on network port: 80
4. Outgoing TCP Settings: Connect to this address: myip.dnsdynamic.com