Beeper.h

00001 #ifndef MBED_BEEPER_H
00002 #define MBED_BEEPER_H
00003  
00004 #include "mbed.h"
00005 
00006 namespace mbed {
00007 
00008 /* Class: Beeper
00009  *  A class witch uses pwm to controle a beeper to generate sounds.
00010  */
00011 class Beeper {
00012 
00013 public:
00014     
00015     /* Constructor: Beeper
00016      *  Creates a new beeper object.
00017      * 
00018      * Variables:
00019      *  pin - The pin which is connected to the beeper.
00020      */
00021     Beeper (PinName pin);
00022 
00023     /* Function: beep
00024      *  Beep with given frequency and duration.
00025      *
00026      * Variables: 
00027      *  frequency - The frequency to use.
00028      *  time - The turation to beep.
00029      */
00030     void beep (float frequency, float time);
00031 
00032     /* Function: note
00033      *  Plays a midi note for a given time.
00034      *
00035      * Variables:
00036      *  note - The note to play.
00037      *  time - The duration to play the note.
00038      */
00039     void note (int, float time);
00040     void stop();        
00041 
00042   private :    
00043     PwmOut _pwm;
00044   };
00045 }
00046 
00047 #endif