title: Has anyone used the USB to Serial library successfully on ChibiOS?
body: <p>I'm using the <a href="http://en.wikipedia.org/wiki/ChibiOS/RT" rel="nofollow">ChibiOS/RT</a> operating system, trying to get the <a href="http://chibios.sourceforge.net/html/group___s_e_r_i_a_l___u_s_b.html" rel="nofollow">USB to Serial library</a> to work. I have managed to link all the files together and it ran with Yagarto. but I can't seem to even use the start function of the USB to Serial lib.</p>
  
  <p>I am using STM32F4 Discovery and want to use its USB as a connection to the PC. I've done that using the CDC class with IAR but I wanted to use ChibiOS for this project and it all seems so overcomplicated. (I have used ChibiOS but only the UART and some port toggling leds and stuff). </p>
  
  <p>Can you give me an example code to start up the USB?  I have been unable to find anything.</p>
  
  <pre><code>sduStart( ??? , ??? ); // I saw what parameters it wants in there but I cannot figure what to actually put :/
  </code></pre>