speaker.h Source File

00001 /*!     \file include/kernel/speaker.h
00002  *      \brief Header for the speaker.
00003  *      \author Andrea Righi <drizzt@inwind.it>
00004  *      \date Last update: 2003-11-02
00005  *      \note Copyright (&copy;) 2003 Andrea Righi
00006  */
00007 
00008 #ifndef SPEAKER_H
00009 #define SPEAKER_H
00010 
00011 #include <const.h>
00012 
00013 /** \ingroup Kernel
00014  *  \defgroup KSpeaker System Speaker
00015  *  The system speaker driver.
00016  *  @{
00017  */
00018 
00019 //! Frequency of the system beep.
00020 #define SYSTEM_BEEP_FREQ        0x533
00021 //! The system beep duration (in ms).
00022 #define SYSTEM_BEEP_TIME        20
00023 
00024 void sound(uint32_t frequency);
00025 void nosound();
00026 void beep();
00027 
00028 /** @} */ // end of KSpeaker
00029 
00030 #endif