system.h

在s3c2410上实现的蜂鸣器程序代码

// system  head file 



#ifdef  SYSTEM_G
#define system_ext  
#else
#define system_ext  extern 
#endif


#define   uchar   unsigned char 
#define   uint    unsigned int 
#define   ushort  unsigned short 
#define   ulong   unsigned long 




system_ext  void Delay(int time) ; 
system_ext  void Port_Init(void) ; 
system_ext  void SysInit( void ) ;

system_ext  void DelayTime( U32 times ) ; 
system_ext  void ChangeMPllValue(int mdiv,int pdiv,int sdiv) ;