title: How can i set the bluetooth pin number in linux C/C++
body: <p>Hi my name is yunsu lee from south korea</p>
  
  <p>Because i have a just little bit english skill, i hope to your understanding about my awkward english</p>
  
  <p>I have a one question.</p>
  
  <p>I can not find a API of setting bluetooth pin number in bluez, when set a bluetooth connection in linux C/C++ environment</p>