Function DetectControllers

Prototype	unsigned char DetectControllers();
Description	Detects what devices are connected to the game ports.
Parameters	None
Returns	Devices connected: b1:b0 = 00 -> No controller connected in P1 port 01 -> Gamepad connected in P1 port 10 -> Mouse connected in P1 port 11 -> Reserved b3:b2 = 00 -> No controller connected in P2 port 01 -> Gamepad connected in P2 port 10 -> Mouse connected in P2 port 11 -> Reserved
Video Modes	All
Since	V3
Notes	If a mouse is expected to be connected, the first time this function is called, enough time must be given to the mouse to settle by calling WaitVsync(8) before invoking this function.

Example:

 WaitVsync(6); //This is only required initially if a mouse is connected
 unsigned char cntl=DetectControllers();
 if(cntl&2){
      Print(5,1,PSTR("A MOUSE IS CONNECTED IN P1 PORT"));
  }