standard.h

该代码是基于菲利普ISP1581USB接口芯片与STC89C51单片机的USB2.0开发代码

#include	<REG52.h>
																		
//***********************************************************************
//*					 			*
//*	                   Data Type Definition			*
//*							         *
//***********************************************************************


#define		UC			unsigned char 
#define		UI			unsigned int
#define		US			unsigned short		
#define		UL			unsigned long
#define		ULI		unsigned long int
#define     UDI      double
#define		On			1
#define		Off			0