read_u_a.h

c8051f020+CH375读写U盘文件的程序

sbit USB_CSa  = P3^3;
sbit USB_WRa  = P3^2;
sbit USB_A0a  = P3^5;
sbit USB_RDa  = P3^4;
sbit USB_INTa = P3^6;



#ifdef USB_EXT
  unsigned char sect_clust_a;
  unsigned int byte_sect_a;
  unsigned char hidd_sect_a;
  unsigned int resv_sect_a;
  unsigned int sect_fat_a; 
  unsigned long root_a;
  unsigned long Sect_Ofst_a;
  unsigned int St_Ofst_a;

  

#else

  extern unsigned int St_Ofst_a;
  extern unsigned char sect_clust_a;
  extern unsigned int byte_sect_a;
  extern unsigned char hidd_sect_a;
  extern unsigned int resv_sect_a;
  extern unsigned int sect_fat_a;
  extern unsigned long root_a;
  extern unsigned long Sect_Ofst_a;
#endif