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SUBJECT [August 29, 2014] WIZnet Newsletter
[WIZnet e-Newsletter]  AUGUST 29, 2014
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WIZ550S2E Set-Up Directions

WIZnet supports all various Serial to Ethernet module set-up methods. We also provide Configuration Tool programs and AT commands so that you can set up easily and quickly through the network. To utilize AT command, it can be set up directly from the serial equipment so there is absolutely no need for a PC.

WIZ550S2E supports both methods of set-up. Particularly in the case of using the Configuration Tool program, the foundation is in JAVA so not only Windows but Linux, MAC OS and other systems can also set up and operate it.

 AT command’s command frame is easy to understand and simple to use. Every command set starts with “AT” and anything else that doesn’t start with “AT” will get an error. All the command words and parameters are ASCII characters, so if the user wishes to input “AT+NSTAT” the letters ‘A’, ‘T’, ‘+’, ‘N’, ‘S’, ‘T’, ‘A’, ‘T’ and CR(0x0D), LF(0x0A) must be input sequentially. All commands must also end with CR(0x0D), LF(0x0A).

 Here at WIZnet, we offer several WIZ550S2E AT command-related tutorials.

WIZ550S2E Configuration Tool
Go to WIZnet's WiKi

Weatherize Your WizFi250

This post will explain how to get instant weather update for a specific city (i.e. Seoul) provided by OpenWeatherMap. With JSON (supplied by OpenWeatherMap), XML and an Ethernet module, we operated WIZnet’s WizFi250.

First, check the API content at OpenWeatherMap.

Calls by city name. API respond with a list of results that matchs a searching word.
In JSON : api.openweathermap.org/data/2.5/weather?q=London,uk
In XML : api.openweathermap.org/data/2.5/weather?q=London&mode=xml

Then, following the provided instructions above, bring forth Seoul’s weather data in JSON and XML format on a PC. A screenshot of the Network Packet during this process is down below for reference.

The parts highlighted in red above are data sent from a PC. We plan to eliminate the unnecessary parts and input the data below using Request Data.

At this step, \r(Carriage return, 0x0d), \n(Line Feed, 0x0a) must be input exactly and the transmitted data size (72 Byte, 81 Byte) should be paid special attention as well.

GET /data/2.5/weather?q=Seoul HTTP/1.1
Host: api.openweathermap.org
(72 Byte)
GET /data/2.5/weather?q=Seoul&mode=xml HTTP/1.1
Host: api.openweathermap.org
(81 Byte)


For more information

[YouTube] Simple Arduino Server Tutorial

In this project he is going to create a simple Datalogger with his Arduino and an Ethernet shield.

go to YouTube

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