udisc.c

用AT91SAM7S64以IO的方式控制SL811的源代码。

/////////////////////////////////////
#include	"config.h"
FLAGS bFlags;
extern unsigned char DBUF[BUFFER_LENGTH];
unsigned char usector;
extern unsigned long  DirStartCluster32;		
extern unsigned long  DirStartCluster;
extern SYS_INFO_BLOCK   DeviceInfo;
unsigned char DataBuf[BUFFER_LENGTH];
extern	FILE_INFO   	 ThisFile;

/////////////////////////////////////////////////
//void play_Udisc();

void main(void)
{
    int temp,i;
    unsigned long time_count;
    
	bFlags.bits.bUartInDone=0;	
	SL811_Init();
    DirStartCluster32 = 0;
    DirStartCluster = 0;
	for (i=0;i<64;i++)
		DBUF[i] = 0;
		    
	while(TRUE)
	{
        time_count++;		
		if (time_count>10000)
			{
				time_count = 0;
				check_usb();
			}
		if(bFlags.bits.SLAVE_FOUND)
			{
				bFlags.bits.SLAVE_FOUND=FALSE;
  		    	DelayMs(20);
				if(EnumUsbDev(1))				// enumerate USB device, assign USB address = #1
					{
			   			bFlags.bits.SLAVE_ENUMERATED = TRUE;	// Set slave USB device enumerated flag			   	
			   			DirStartCluster32 = 0;
				   		DirStartCluster = 0;
					}	
			}
		if(bFlags.bits.SLAVE_REMOVED)
			{
				bFlags.bits.SLAVE_REMOVED=FALSE;
				bFlags.bits.SLAVE_ENUMERATED = FALSE;
				bFlags.bits.SLAVE_IS_ATTACHED = FALSE;
			}
		if(bFlags.bits.bMassDevice)			
			{
				bFlags.bits.bMassDevice=FALSE;
				DelayMs(50);
				if(EnumMassDev())
					{
						bFlags.bits.SLAVE_IS_ATTACHED = TRUE;
					}
				else{
						bFlags.bits.SLAVE_IS_ATTACHED = FALSE;
						temp=SL811Read(IntStatus);
						if(!(temp & 0x40))	bFlags.bits.SLAVE_FOUND=TRUE;
					}		
			}
		if(bFlags.bits.SLAVE_IS_ATTACHED)
			{
				CreateFile("demo1234567890.txt",0x20);
				for (i=0;i<100;i++)
				{
		     		DataBuf[i*10+0]='U';
		     		DataBuf[i*10+1]=' ';
		     		DataBuf[i*10+2]='D';
		     		DataBuf[i*10+3]='I';
		     		DataBuf[i*10+4]='S';
		     		DataBuf[i*10+5]='K';
					DataBuf[i*10+6]=' ';
					DataBuf[i*10+7]='!';
					DataBuf[i*10+8]= 13;
					DataBuf[i*10+9]= 10; 
				}		     	     
				while(1)
				{
					SetFilePointer(ThisFile.LengthInByte);
					WriteFile(1000,DataBuf);
				}	
			}		
		}
    	
}