title: WiFi module communication with Android Phone
body: <p>I am working on a project which is an android controlled LED light. This LED is connected to a LED controller, which is connected to a WiFi module (<a href="http://www.wiznet.co.kr/Sub_Modules/en/product/Product_Detail.asp?cate1=&amp;cate2=&amp;cate3=&amp;pid=1134" rel="nofollow noreferrer">WizFi220</a>). WiFi module uses GPIO interface to send data to LED controller.
  The Android phone sends data through TCPSocket.</p>
  
  <p>Until now I achieved to write a simple Server-Client communication, and the server was implemented in Java, on a normal PC. It worked well. (eg if I pushed a button on the android device, the Server program on the PC printed out something to the console)</p>
  
  <p>The question is what should I send to the WizFi module to be understandable... if it comes out from the GPIO interface, the "command" reaches the LED controller, eg it turns on/off, changes color or anything. (as the LED is RGB LEDs)</p>
  
  <p>Thanks for answers and help.</p>