udisk.h

用SL811做USB主机的源码

#include "request.h"
#include "sl811.h"
#include "MassStorage.h"

uint8 UDisk_Present = 0;
uint8 permit_print = 0;

uint8 BusResetSlave(void)
{
 SL811_ADDR = SL811_SOF_DataSet;
 SL811_COMM = 0xE0;
 SL811_COMM = 0xAE; 		  	     // Select Master Mode   
 SL811_ADDR = SL811_Control;
 SL811_COMM = 0x08; 		  		 // USB bus reset
 delayms(60); 						 // 50ms or more
 SL811_ADDR = SL811_Control;
 SL811_COMM = 0x03; 		  		 // USB select FS. SOF enable
 delayms(150);						 // at least 100ms after bus reset
 
 //Set Address 1 traction
 if(USBAFirstSendPacket(Set_Address,8,SETUP_PID|0x00,0) != 0) return 0x04;
 if(USBAGetPacket(GetDataBuffer, 0, 0) == 0xFF ) return 0x05;
 //Set_configuration
 if(USBA_FSendPacket(Set_Configuration,8,SETUP_PID|0x00,UDisk_Address,0) != 0) return 0x0b;
 if(USBAGetPacket(GetDataBuffer, 0, UDisk_Address) == 0xFF ) return 0x0c;
 Bulk_Data_Toggle = 0;	 
 return 0;
}