usb.i

51环境下的FAT及FAT32文件系统源码

 else
 cmd = 0x42;					
 }
 
 else
 {  	
 if(xferLen)			
 {
 intr=usbstack.setup.wLength;
 usbstack.setup.wValue=WordSwap(usbstack.setup.wValue);
 usbstack.setup.wIndex=WordSwap(usbstack.setup.wIndex);
 usbstack.setup.wLength=WordSwap(usbstack.setup.wLength);
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x03;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
   ((unsigned char volatile xdata *) 0)[0xF80B] = 0x01;                       
 usbBufWrite((unsigned char *)&usbstack.setup,xferLen);
 if (xferLen < 64)
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x03;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
 usbstack.setup.wLength=intr;
 }
 cmd = 0x41;						
 }
 
   ((unsigned char volatile xdata *) 0)[0xF801] = 0xff;         
   ((unsigned char volatile xdata *) 0)[0xF802] = 0xff;
   ((unsigned char volatile xdata *) 0)[0xF803] = cmd;			 
 
 
 
 DelayUs(20);                 
 
 ConsecutiveNAKCount = 0;
 
 while(1)					 
 {
 DelayUs(10);             
 intr = ((unsigned char volatile xdata *) 0)[0xF801];		
 
 if(usbstack.pid==0x90)
 { 
 
 
 
 
 
 
 
 if (intr & 0x04)
 {
 ConsecutiveNAKCount = 0;
   ((unsigned char volatile xdata *) 0)[0xF801] = 0x04;
 
 if(PassToggleCheckSoftware())
 
#line 177 "usb.c" /1
 
 
#line 179 "usb.c" /0
 
 {
 bXXGFlags.bToggle = ~bXXGFlags.bToggle;
 if(xferLen<64)
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x03;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
 
 
 usbstack.wLen -= (unsigned int)xferLen;
 if(usbstack.wLen==0)                          
 { 
 if(!bXXGFlags.bIN_ISR)
 usbBufRead(usbstack.buffer, xferLen);
 else
   ((unsigned char volatile xdata *) 0)[0xF80B] = 0x13;                     
 
 
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;                         
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;
 
 if(xferLen<64)                            
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x03;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
 else
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x01;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
   ((unsigned char volatile xdata *) 0)[0xF80B] = 0x10;                       
 result = 0x20;
 break;
 }	
 else				
 {	     
 if(!bXXGFlags.bIN_ISR)				  
 usbBufRead(usbstack.buffer, xferLen);
 else
   ((unsigned char volatile xdata *) 0)[0xF80B] = 0x13;                       
 
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;                         
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;
 
 if(xferLen<64)
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x03;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
 else
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x01;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
 usbstack.buffer += xferLen;
 if (usbstack.wLen >= usbstack.wPayload)  		
 xferLen = usbstack.wPayload;			
 else						
 xferLen = usbstack.wLen;
 
 cmd = 0x04;
   ((unsigned char volatile xdata *) 0)[0xF80B] = 0x10;                       
   ((unsigned char volatile xdata *) 0)[0xF806] = xferLen;
   ((unsigned char volatile xdata *) 0)[0xF803] = cmd;
 }
 }
 else
 {
 if(xferLen<64)                            
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x03;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
 
   ((unsigned char volatile xdata *) 0)[0xF80B] = 0x14;                       
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;                         
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;
   ((unsigned char volatile xdata *) 0)[0xF80F] = 0x0;
 
 if(xferLen<64)                            
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x03;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
 else
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x01;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
   ((unsigned char volatile xdata *) 0)[0xF80B] = 0x10;                       
 cmd = 0x04;
   ((unsigned char volatile xdata *) 0)[0xF803] = cmd;
 }
 }
 
 
 
 
 
 
 
 else if(intr & 0x10)   
 {
   ((unsigned char volatile xdata *) 0)[0xF801] = 0x10;
 if(ConsecutiveNAKCount < 200)
 ConsecutiveNAKCount = ConsecutiveNAKCount + 1;
 else
 return 0;
 
 
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x01;           
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 DelayMs(1);
   ((unsigned char volatile xdata *) 0)[0xF803] = cmd;
 }
 else if(intr & 0x80)       
 {
 
 if (((unsigned char volatile xdata *) 0)[0xF801] & 0x80)       
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x01;           
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
   ((unsigned char volatile xdata *) 0)[0xF803] = cmd;			 
 }
 }
 else if (intr & 0x08)
 {
   ((unsigned char volatile xdata *) 0)[0xF801] = 0x08;
 bXXGFlags.SLAVE_STALLED = 1;
 break;
 }
 }
 else   
 {					
 if(intr & 0x20)
 {
 result = 0x20;
   ((unsigned char volatile xdata *) 0)[0xF801] = 0x20;
 break;
 }
 else if(intr & 0x80)       
 {
 
 if (((unsigned char volatile xdata *) 0)[0xF801] & 0x80)       
 {
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x02;           
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
   ((unsigned char volatile xdata *) 0)[0xF803] = cmd;			 
 }
 }
 }    
 
 } 
 if (result == 0x20) 	 
 {		
 return 1;
 }		 
 
 return 0;			 
 
 }
 
 
 
 
 unsigned char ep0Xfer(void)
 {
   ((unsigned char volatile xdata *) 0)[0xF804] = 0x0;    
 
 
 
 usbstack.pid=0xD0;
 
 
 if (!usbXfer(0)) 
 return 0;
 
 usbstack.pid  = 0x90;                    
 
 
 
 
 
 usbstack.wLen=usbstack.setup.wLength;
 if (usbstack.wLen)								 
 {
 if (usbstack.setup.bmRequest & 0x80)		 
 {
 usbstack.pid  = 0x90;	
 bXXGFlags.bToggle=1;                      
 
 
 if(!usbXfer(0))
 return 0;
 
 usbstack.pid  = 0x10;
 
 }
 else										 
 {							
 usbstack.pid  = 0x10;
 
 if(!usbXfer(0))
 return 0;
 usbstack.pid  = 0x90;
 
 }
 }
 DelayMs(2);   
 
 
 
 usbstack.wLen=0;
 
 bXXGFlags.bToggle=1;    
 if(!usbXfer(0))
 return 0;
 
 return 1;											
 
 }
 
 unsigned char epBulkSend(unsigned char *pBuffer,unsigned int len)
 {   
 
 usbstack.pid=0x10;
   ((unsigned char volatile xdata *) 0)[0xF804] = uDev.bEPAddr[usbstack.epbulkout];
 
 usbstack.wPayload=64;
 usbstack.wLen=len;
 usbstack.buffer=pBuffer;
 bXXGFlags.bToggle=uDev.bData1[usbstack.epbulkout];
 
 while(len>0)
 {
 if (len > usbstack.wPayload)
 usbstack.wLen = usbstack.wPayload;
 else				
 usbstack.wLen = len;
 
 if(!usbXfer(((unsigned char volatile xdata *) 0)[0xF804]))
 return 0;
 
 bXXGFlags.bToggle=~bXXGFlags.bToggle;
 
 len-=usbstack.wLen;
 usbstack.buffer=usbstack.buffer+usbstack.wLen;
 }
 uDev.bData1[usbstack.epbulkout]=bXXGFlags.bToggle;   
 return 1;	
 }
 
 unsigned char epBulkRcv(unsigned char *pBuffer,unsigned int len)
 {
 
 usbstack.pid=0x90;
   ((unsigned char volatile xdata *) 0)[0xF804] = uDev.bEPAddr[usbstack.epbulkin];
 
 usbstack.wPayload=64;
 usbstack.wLen=len;
 usbstack.buffer=pBuffer;
 
 if(usbstack.wLen)
 {
 bXXGFlags.bToggle = uDev.bData1[usbstack.epbulkin];   
 if(!usbXfer(((unsigned char volatile xdata *) 0)[0xF804]))
 return 0;
 
 uDev.bData1[usbstack.epbulkin] = bXXGFlags.bToggle;   
 }
 return 1;
 }
 
 
 
 
 unsigned char setAddress(unsigned char addr)
 {
 usbstack.setup.bmRequest=0;
 usbstack.setup.bRequest=0x05;
 usbstack.setup.wValue=addr;
 usbstack.setup.wIndex=0;
 usbstack.setup.wLength=0;
 usbstack.wLen=0x8;
 
 return ep0Xfer();
 }
 
 
 
 
 unsigned char setConfiguration(void)
 {
 usbstack.setup.bmRequest=0;
 usbstack.setup.bRequest=0x09;
 usbstack.setup.wIndex=0;
 usbstack.setup.wLength=0;
 usbstack.wLen=0x8;
 
 return ep0Xfer();
 }
 
 
 
 
 unsigned char getDesc(void)
 { 	
 usbstack.setup.bmRequest=0x80;
 usbstack.setup.bRequest=0x06;
 usbstack.setup.wValue=WordSwap(usbstack.setup.wValue);	
 usbstack.wPayload=uDev.wPayLoad[0];
 usbstack.wLen=8;        
 
 return ep0Xfer();
 }
 
 
 
 
 
 
 unsigned char enumUsbDev(unsigned char usbaddr)
 {
 unsigned char i;									 
 unsigned char epLen;
 
 
 pDevDesc  pDev;	     
 pCfgDesc  pCfg;      
 pIntfDesc pIfc;      
 pEPDesc   pEnp;      
 
   ((unsigned char volatile xdata *) 0)[0xF805] = 0x0;      
 uDev.wPayLoad[0] = 8;	           		 
 usbstack.wPayload = uDev.wPayLoad[0];
 usbstack.buffer=DBUF;               
 usbstack.usbaddr = 0;               
 
 
 
 
 
 pDev =(pDevDesc)DBUF;			       
 
 
 usbstack.setup.wValue=0x01;
 usbstack.setup.wIndex=0;
 usbstack.setup.wLength=8;			   
 
 if (!getDesc())						   
 return 0;
 
 uDev.wPayLoad[0]=pDev->bMaxPacketSize0;
 usbstack.wPayload = uDev.wPayLoad[0];
 
 
 
 
 if (!setAddress(usbaddr)) 						 
 return 0;								 
 
   ((unsigned char volatile xdata *) 0)[0xF805] = usbaddr;
 
 
 
 usbstack.usbaddr=usbaddr;
 usbstack.setup.wLength=pDev->bLength;
 usbstack.setup.wValue=0x01;
 usbstack.setup.wIndex=0;
 usbstack.buffer=DBUF;
 
 if (!getDesc()) 	
 return 0;						 
 uDev.wVID  = pDev->idVendor;			 
 uDev.wPID  = pDev->idProduct;			 
 uDev.iMfg  = pDev->iManufacturer;		 
 uDev.iPdt  = pDev->iProduct;			 
 
 
 
 
 pCfg = (pCfgDesc)DBUF;	
 
 usbstack.setup.wValue=0x02;
 usbstack.setup.wIndex=0;
 usbstack.setup.wLength=9;
 usbstack.buffer=DBUF;	
 if (!getDesc()) 		
 return 0;	
 
 usbstack.setup.wLength=WordSwap(pCfg->wLength);
 usbstack.buffer=DBUF;
 
 if (!getDesc()) 		
 return 0;
 
 
 
 
 
 
 pIfc = (pIntfDesc)(DBUF + 9);			 
 uDev.bClass 	= pIfc->iClass;			 
 uDev.bNumOfEPs = (pIfc->bEndPoints <= 0x05) ? pIfc->bEndPoints : 0x05;
 
 if(uDev.bClass==8)  
 {
 bXXGFlags.bMassDevice=1;
 }
 
 
 
 usbstack.setup.wValue=0x01;
 
 
 
 
 if (!setConfiguration())		
 return 0;
 
 epLen = 0;
 for (i=1; i<=uDev.bNumOfEPs; i++)				 
 {
 pEnp = (pEPDesc)(DBUF + 18 + epLen);	   			 
 
 
 uDev.bEPAddr[i]  	= pEnp->bEPAdd;			 
 uDev.bAttr[i]		= pEnp->bAttr;			 
 uDev.wPayLoad[i] 	= WordSwap(pEnp->wPayLoad);		 
 uDev.bInterval[i] 	= pEnp->bInterval;		 
 uDev.bData1[i] = 0;			             
 epLen += 7;
 
 if(uDev.bAttr[i]==0x2)                       
 {
 if(uDev.bEPAddr[i]&0x80)
 usbstack.epbulkin=i;   
 else
 usbstack.epbulkout=i;  
 }
 
 }
 
 return 1;
 }
 
 
 
 void usbInit(void)
 {	
   ((unsigned char volatile xdata *) 0)[0xF800] = 0x03;   
 DelayUs(100);
   ((unsigned char volatile xdata *) 0)[0xF800] = 0x09;   
   ((unsigned char volatile xdata *) 0)[0xF804] = 0x00;
   ((unsigned char volatile xdata *) 0)[0xF805] = 0x00;
   ((unsigned char volatile xdata *) 0)[0xF801] = 0xff;
   ((unsigned char volatile xdata *) 0)[0xF802] = 0xff;
   ((unsigned char volatile xdata *) 0)[0xF407] = 0xff;
   ((unsigned char volatile xdata *) 0)[0xF405] = 0xff;
   ((unsigned char volatile xdata *) 0)[0xF408] = 0x02;
   ((unsigned char volatile xdata *) 0)[0xF808] = 0xff;
 
 while(1)      
 {
 if(((unsigned char volatile xdata *) 0)[0xF808] & 0x04)   
 {
 DelayMs(100);	                
   ((unsigned char volatile xdata *) 0)[0xF808] = 0xff;
   ((unsigned char volatile xdata *) 0)[0xF800] = 0x19;  
 DelayMs(100);                  
 break;  
 }
 
 }
 
 }
 
 
 
 
 
 
 
 
 
 
 
 
 static unsigned char 
 DATA0_Byte00 = 0x00, DATA0_Byte01 = 0x01, DATA0_Byte02 = 0x02, DATA0_Byte03 = 0x03, 
 DATA0_Byte04 = 0x04, DATA0_Byte05 = 0x05, DATA0_Byte06 = 0x06, DATA0_Byte07 = 0x07;
 
 
 
 
 static unsigned char 
 DATA1_Byte00 = 0x0f, DATA1_Byte01 = 0x0e, DATA1_Byte02 = 0x0d, DATA1_Byte03 = 0x0c, 
 DATA1_Byte04 = 0x0b, DATA1_Byte05 = 0x0a, DATA1_Byte06 = 0x09, DATA1_Byte07 = 0x08;
 
 
 
 
 
 
 
 
 static unsigned char FrameTypeExpected = 0x0;
 
 void GetThisFrameData()
 {
 if(FrameTypeExpected == 0x0)
 usbBufRead(&DATA0_Byte00, 0x8);
 else 
 usbBufRead(&DATA1_Byte00, 0x8);
 
 
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x02;
   ((unsigned char volatile xdata *) 0)[0xF80C] = 0x00;
 }
 
 
 
 
 
 static unsigned char Consecutive0x00Count = 0;
 static unsigned char Consecutive0xffCount = 0;
 static unsigned char ConclusionByCompareContents()
 {
 
 
 
 
 
 if(((unsigned char volatile xdata *) 0)[0xF807] < 64)
 {
 Consecutive0x00Count = 0;
 Consecutive0xffCount = 0;
 return 1;
 }
 












 
 
 if( (DATA1_Byte00 == 0x00) && (DATA1_Byte01 == 0x00) &&
 (DATA1_Byte02 == 0x00) && (DATA1_Byte03 == 0x00) &&
 (DATA1_Byte04 == 0x00) && (DATA1_Byte05 == 0x00) &&
 (DATA1_Byte06 == 0x00) && (DATA1_Byte07 == 0x00) )
 {
 Consecutive0xffCount = 0;
 if(Consecutive0x00Count != 8)
 {
 Consecutive0x00Count = Consecutive0x00Count + 1;
 FrameTypeExpected = (FrameTypeExpected == 0x0)?0x1:0x0;
 return 1;
 }
 else
 return 0;
 }
 












 
 
 
 
 if( (DATA1_Byte00 == 0xff) && (DATA1_Byte01 == 0xff) &&
 (DATA1_Byte02 == 0xff) && (DATA1_Byte03 == 0xff) &&
 (DATA1_Byte04 == 0xff) && (DATA1_Byte05 == 0xff) &&
 (DATA1_Byte06 == 0xff) && (DATA1_Byte07 == 0xff) )
 {
 Consecutive0x00Count = 0;
 if(Consecutive0xffCount != 8)
 {
 Consecutive0xffCount = Consecutive0xffCount + 1;
 FrameTypeExpected = (FrameTypeExpected == 0x0)?0x1:0x0;
 return 1;
 }
 else
 return 0;
 }
 
 Consecutive0x00Count = 0;
 Consecutive0xffCount = 0;
 
 if( (DATA0_Byte00 == DATA1_Byte00) && (DATA0_Byte01 == DATA1_Byte01) &&
 (DATA0_Byte02 == DATA1_Byte02) && (DATA0_Byte03 == DATA1_Byte03) &&
 (DATA0_Byte04 == DATA1_Byte04) && (DATA0_Byte05 == DATA1_Byte05) &&
 (DATA0_Byte06 == DATA1_Byte06) && (DATA0_Byte07 == DATA1_Byte07) ) 
 return 0;
 
 FrameTypeExpected = (FrameTypeExpected == 0x0)?0x1:0x0;
 return 1;
 }
 
 
 
 
 unsigned char PassToggleCheckSoftware()
 {
 GetThisFrameData();
 
 return ConclusionByCompareContents();
 }