C8051USB

代码说明：

这是一个基于C8051F340的SD读卡器 #include "F34x_MSD_Physical_Settings.h" #include "F34x_MSD_CF_Basic_Functions.h" #include sbit Led1 = P2^2; sbit Led2 = P2^3; void CF_Port_Init(); //---------------------------------------------------------------------------- // Init_CF //---------------------------------------------------------------------------- // // This routine initializes the Compact Flash memory card // // Parameters   : // Return Value : //---------------------------------------------------------------------------- char Init_CF() {   xdata char result = Dtct_Card();   xdata unsigned int loop = 0;   xdata unsigned reinit = 0;   if (result == 1) return (CF_NO_CARD); REINIT:   CF_RST = 1;   while(++loop);