usbhost.c

用keil开发的.单片机税控器程序.单片机用的是AT公司的.upsd3245

			i = CH375FileClose( ); 
			mStopIfError( i );
			break;					
		}
		else 
		{									                         
			mStopIfError( i );	
		}																	 //判断返回状态是否有错：这里指文件读是否成功
		                                           //如操作失败则返回0
	}

}

void UsbFilesRead(uchar *filesname,ulong startSector ,uchar readsectorlen,uchar *str)            //U盘写字节写函数
{
	UINT8 i;
	uint k;
	CH375_PORT_INIT( ); 
	mDelay100mS( );                                      //端口初始化：这里指初始化串口
	i=CH375LibInit();																					//初始化文件库
	mStopIfError(i); 
	while(1)
	{
		while(CH375DiskStatus !=DISK_CONNECT)xQueryInterrupt();		//检查U盘是否己连接，如果己连接则断续，如果未连接则等待
		mDelay100mS();                                            //延时
		mDelay100mS();                                            //延时
		for ( i = 0; i < 2; i ++ )                               //检查U盘是否准备好
		{ 
			mDelay100mS( );			
			if ( CH375DiskReady( ) == ERR_SUCCESS ) break;       //如果U盘准备好则继续下一步操作
		}
		mCopyCodeStringToXRAM( mCmdParam.Open.mPathName, filesname ); //文件名操作
		i = CH375FileOpen( );	                                   //打开文件
		if ( i == ERR_SUCCESS ) 
		{ 	
			
			mCmdParam.Locate.mSectorOffset = startSector;  
			i = CH375FileLocate( );
			mStopIfError( i );	
			for(i=0;i<readsectorlen;i++)
			{
				mCmdParam.Read.mSectorCount = 1;
				i = CH375FileRead( );
		 		CH375DirtyBuffer( );										                         
				mStopIfError( i );			
				for(k=0;k<512;k++)
					{

					str[k]=FILE_DATA_BUF[k];
			
					}
			}
			i = CH375FileClose( ); 
			mStopIfError( i );
		
			break;					
		}
		else 
		{
									                         
			mStopIfError( i );	
		}																	 //判断返回状态是否有错：这里指文件读是否成功
		                                           //如操作失败则返回0
	}
		 
}	  

uchar CmpFileData(uchar *iDestination, uchar *iSource)
{
	uint i;	
	uchar daterror=0;
	
	for(i=0;i<512;i++)
	{
		if(iDestination[i]!=iSource[i])
		{					
			daterror++;		
		}		
	}
	if(daterror!=0)
	{
		return 1;	
	}
	else
	{
		 return 0;
	}		
}	
	

		
void SectorDateCopy(uchar *iDestination, uchar *iSource)
{
	uint i;
	for(i=0;i<512;i++)
	{
		iDestination[i]=iSource[i];
	}
}
uchar  UsbFilesModi(UINT8 *filesname,uchar Sectorlen ,uchar *str)            //U盘写字节写函数
{
	UINT8 i;
	uchar xdata temp[512];	
	uint j,k;
	ulong l=0 ;
	CH375_PORT_INIT( ); 
	mDelay100mS( );                                      //端口初始化：这里指初始化串口
	i=CH375LibInit();																					//初始化文件库
	mStopIfError(i); 
	while(1)
	{
		while(CH375DiskStatus !=DISK_CONNECT)xQueryInterrupt();		//检查U盘是否己连接，如果己连接则断续，如果未连接则等待
		mDelay100mS();                                            //延时
		mDelay100mS();                                            //延时
		for ( i = 0; i < 2; i ++ )                               //检查U盘是否准备好
		{ 
			mDelay100mS( );			
			if ( CH375DiskReady( ) == ERR_SUCCESS ) break;       //如果U盘准备好则继续下一步操作
		}
		mCopyCodeStringToXRAM( mCmdParam.Open.mPathName, filesname );  //对文件名进行操作
		i = CH375FileOpen( );	                                   //打开文件
		if ( i == ERR_SUCCESS || i == ERR_MISS_FILE )            //如果文件打开成功或者文件名不存在则进行下一步操作
		{ 
	 			if(i==ERR_MISS_FILE)                                 //如果是文件名不存在则新建文件
	 			{
	 				i = CH375FileCreate( );                           //按给定的文件名建立文件
					mStopIfError( i );                                //判断返回状态是否有错：这里指新建文件是否成功
				}			
						
				for(j=0;j<Sectorlen;j++)
				{
						CH375DirtyBuffer( );
						for(k=0;k<512;k++)
						{
					
							temp[k]=str[l];
							l++;
				 		}
				 		mCmdParam.Locate.mSectorOffset = j;  
						i = CH375FileLocate( );
						mStopIfError( i );
						
						SectorDateCopy(FILE_DATA_BUF,temp) ;
						mCmdParam.Write.mSectorCount = 1;
						i=CH375FileWrite();  
						mStopIfError( i );				
						mCmdParam.Locate.mSectorOffset = j-1;  
						i = CH375FileLocate( );				
						mCmdParam.Read.mSectorCount = 1;
						i = CH375FileRead( );
		 				CH375DirtyBuffer( );		 		
		 				if(CmpFileData(FILE_DATA_BUF ,temp))
		 				{		 			
		 						CH375DirtyBuffer( );
		 						SectorDateCopy(FILE_DATA_BUF,temp);
		 						mCmdParam.Locate.mSectorOffset = j-1;  
								i = CH375FileLocate( );		 			
		 						mCmdParam.Write.mSectorCount = 1;
								i=CH375FileWrite();  
								mStopIfError( i );
								mCmdParam.Locate.mSectorOffset = j-1;  
								i = CH375FileLocate( );				
								mCmdParam.Read.mSectorCount = 1;
								i = CH375FileRead( );
		 						CH375DirtyBuffer( );
		 						if(CmpFileData(FILE_DATA_BUF ,temp))return 1;		 			
		 				}		
		 		}	
					
		mCmdParam.Close.mUpdateLen = 1;                      //文件长度更新
		i = CH375FileClose( );                               //写文件完成，关闭文件
		mStopIfError( i );
		break;					
		}
		else mStopIfError( i );			                       									
		  		                               
	}		
		 
}	                     



                 
void USBHOSTWrite(void)
{
	uchar  xdata temp[512];
	uchar j,i;
	uint c; 
	c=0;
	for(i=0;i<52;i++)
	{
		if(c<512)
		{
			for(j='0';j<='9';j++)
			{
				temp[c]=j;
				c++;
			}	
		}			
	   else break;
	}	
	UsbFilesWrite("/MMMMM.TXT",1,temp);
}
	                   
void UsbDiskstatus(void)
{
	uchar i;
	CH375_PORT_INIT( );
	mDelay100mS();                                 //端口初始化：这里指口串口初始化
	i=CH375LibInit();                                        //文件系统初始化  
	mStopIfError(i); 
	while(CH375DiskStatus !=DISK_CONNECT)
	{
		xQueryInterrupt();
	}
}
void UsbOperationFinish(void)
{
	while ( CH375DiskStatus != DISK_DISCONNECT ) xQueryInterrupt( );
}


uchar USBWriteReadTest(bit file)
{
	
	uchar temp1[11];
	uchar temp3[3];
	ulong inp;
	//uchar i;
	/*
	for(i=0;i<10;i++)
	{

		temp1[i]=i+'0';

	}
	*/
	
	LcdDisplay(0,48,"请插入U盘",3);
	UsbDiskstatus();
	LcdDisplay(0,48,"U盘己插入",3);
	if(file==1)
	{
		
		LcdDisplay(16,16,"正在扇区写,请等待...",0);
		USBHOSTWrite();		
		LcdDisplay(16,16,"U盘扇区写测试完成",3);			
	}
	else
	{
		/*
		LcdDisplay(16,16,"正在字节写...",3);
		UsbByteWrite("/GSTEST.TXT",10,temp1);
		LcdDisplay(16,16,"字节写测试完成",3);
		*/
	
		LcdDisplay(16,32,"请输入8个数字",0);	
		LcdDisplay(32,0,"输入完成后按<确认>键",0);	
		temp3[0]=0;
		inp = GetInt(48,0,0,8,0,temp3);
		NumToStr(inp,temp1,0);	
		LcdDisplay(0,16,"正在字节写.请等待...",3);
		UsbByteWrite("/GSTEST.TXT",8,temp1);
		LcdDisplay(16,16,"U盘字节写测试完成",3);
	 

	}
	LcdDisplay(48,32,"请拔出U盘...",0);
	UsbOperationFinish();
//	Hint(48,32,"U盘已拔出",1);
	return 1;	
}