?? hpi16.c
字號:
pBuffer[9] = str[i+2];
pBuffer[10] = str[i+3];
len = 0;
}
ThisFile.bFileOpen=0;
ThisFile.FatSectorPointer=0;
pBuffer[11] = attr;
cnum=GetFreeCusterNum16();
if(cnum<0x02)
return FALSE;
pBuffer[26]=(unsigned char)(cnum);
pBuffer[27]=(unsigned char)(cnum>>8);
pBuffer[28]=0;
pBuffer[29]=0;
pBuffer[30]=0;
pBuffer[31]=0;
bstop=0;
if(DirStartCluster==0)
{
/////// Search a free space in the root dir space and build the item ///
for(sector=0;sector<DeviceInfo.BPB_RootEntCnt;sector++)
{
if(!RBC_Read(DeviceInfo.RootStartSector+sector,1,DBUF))
return FALSE;
DirCount=0;
bwrite=0;
for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
{
if(len==0)
{
if((DBUF[i]==0x00)||(DBUF[i]==0xE5))
{
for(j=0;j<32;j++)
DBUF[i+j]=*(pBuffer+j);
if(!RBC_Write(DeviceInfo.RootStartSector+sector,1,DBUF))
return FALSE;
bstop=1;
break;
}
}
else
{
if(DirCount==0)
InByte=i;
if(DBUF[i]==0xE5)
DirCount++;
else if(DBUF[i]==0x00)
{
DirCount++;
DBUF[i]=0xE5;
bwrite=1;
}
else
DirCount=0;
if((DirCount*32)>=(len+32))
{
for(j=0;j<len;j++)
DBUF[InByte+j]=*(pName+j);
for(j=0;j<32;j++)
DBUF[InByte+len+j]=*(pBuffer+j);
if(!RBC_Write(DeviceInfo.RootStartSector+sector,1,DBUF))
return FALSE;
bstop=1;
break;
}
}
}
if(bstop==1)break;
if((len!=0)&&(bwrite==1))
{
if(!RBC_Write(DeviceInfo.RootStartSector+sector,1,DBUF))
return FALSE;
}
}
if(sector>=DeviceInfo.BPB_RootEntCnt)
return FALSE;
}
////////////////////////////////////////////////////////////
else
{
NowCluster=DirStartCluster;
do
{
NowSector=FirstSectorofCluster16(NowCluster);
ClusterPointer=NowCluster;
for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
{
if(!RBC_Read(NowSector+sector,1,DBUF))
return FALSE;
DirCount=0;
for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
{
if(len==0)
{
if((DBUF[i]==0x00)||(DBUF[i]==0xE5))
{
for(j=0;j<32;j++)
DBUF[i+j]=*(pBuffer+j);
if(!RBC_Write(NowSector+sector,1,DBUF))
return FALSE;
bstop=1;
break;
}
}
else
{
if(DirCount==0)
InByte=i;
if(DBUF[i]==0xE5)
DirCount++;
else if(DBUF[i]==0x00)
{
DirCount++;
DBUF[i]=0xE5;
}
else
DirCount=0;
if((DirCount*32)>=(len+32))
{
for(j=0;j<len;j++)
DBUF[InByte+j]=*(pName+j);
for(j=0;j<32;j++)
DBUF[InByte+len+j]=*(pBuffer+j);
if(!RBC_Write(NowSector+sector,1,DBUF))
return FALSE;
bstop=1;
break;
}
}
}
if(bstop==1)break;
if(len!=0)
{
if(!RBC_Write(NowSector+sector,1,DBUF))
return FALSE;
}
}
if(bstop==1)break;
NowCluster=GetNextClusterNum16(NowCluster);
if(NowCluster>0xffef)
{
NowCluster=CreateClusterLink16(ClusterPointer);
if(NowCluster==0x00)
return FALSE;
NowSector=FirstSectorofCluster16(NowCluster);
for(i=0;i<DeviceInfo.BPB_BytesPerSec;i++) DBUF[i]=0x00;
for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
{
if(!RBC_Write(NowSector+sector,1,DBUF))
return FALSE;
}
}
}while(NowCluster<=0xffef);
if(NowCluster>0xffef)
return FALSE;
}
////////////////////////////////////////////////////////////////
ThisFile.StartCluster=cnum;
ThisFile.LengthInByte=0;
ThisFile.ClusterPointer=ThisFile.StartCluster;
ThisFile.SectorPointer=FirstSectorofCluster16(ThisFile.StartCluster);
ThisFile.OffsetofSector=0;
ThisFile.SectorofCluster=0;
ThisFile.bFileOpen=1;
ThisFile.pointer=0;
ThisFile.FatSectorPointer=0;
return TRUE;
}
unsigned char WriteFile16(unsigned long writeLength,unsigned char *pBuffer)
{
unsigned int len,sector,i,cnum,tlen;
unsigned char bStop;
if(!bFlags.bits.SLAVE_IS_ATTACHED)
return FALSE;
if(!ThisFile.bFileOpen)
return FALSE;
ThisFile.bFileOpen=0;
bStop=0;
tlen=0;
while(writeLength>0)
{
if(writeLength+ThisFile.OffsetofSector>DeviceInfo.BPB_BytesPerSec)
len=DeviceInfo.BPB_BytesPerSec;
else
len=writeLength+ThisFile.OffsetofSector;
//////////////////////////////////////////////////////
if(ThisFile.OffsetofSector>0)
{
if(RBC_Read(ThisFile.SectorPointer,1,DBUF))
{
len=len-ThisFile.OffsetofSector;
for(i=0;i<len;i++)
DBUF[ThisFile.OffsetofSector+i]=*(pBuffer+i);
if(!RBC_Write(ThisFile.SectorPointer,1,DBUF))
return FALSE;
ThisFile.OffsetofSector=ThisFile.OffsetofSector+len;
}
else
return FALSE;
}
else
{
if(!RBC_Write(ThisFile.SectorPointer,1,pBuffer+tlen))
return FALSE;
ThisFile.OffsetofSector=len;
}
/////////////////////////////////////////////////////
writeLength-=len;
tlen+=len;
/////////////更新文件指針 //////////////////////////////
if(ThisFile.OffsetofSector>DeviceInfo.BPB_BytesPerSec-1)
{
ThisFile.OffsetofSector-=DeviceInfo.BPB_BytesPerSec;
ThisFile.SectorofCluster+=1;
if(ThisFile.SectorofCluster>DeviceInfo.BPB_SecPerClus-1)
{
ThisFile.SectorofCluster=0;
ThisFile.ClusterPointer=CreateClusterLink16(ThisFile.ClusterPointer);
if(ThisFile.ClusterPointer==0x00)
return FALSE;
ThisFile.SectorPointer=FirstSectorofCluster16(ThisFile.ClusterPointer);
}
else
ThisFile.SectorPointer=ThisFile.SectorPointer+1;
}
}//end while
ThisFile.pointer+=tlen;
///////////更新文件目錄信息/////////////////////////////
if(DirStartCluster==0)
{
for(sector=0;sector<DeviceInfo.BPB_RootEntCnt;sector++)
{
//////////////////////////////////////////////////
if(!RBC_Read(DeviceInfo.RootStartSector+sector,1,DBUF))
return FALSE;
///////////////////////////////////////////////////
for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
{
cnum=LSwapINT16(DBUF[i+26],DBUF[i+27]);
if((cnum==ThisFile.StartCluster)&&(DBUF[i]!=0xe5))
{
if(ThisFile.pointer>ThisFile.LengthInByte)
ThisFile.LengthInByte=ThisFile.pointer;
DBUF[i+28]=(unsigned char)(ThisFile.LengthInByte&0xff);
DBUF[i+29]=(unsigned char)((ThisFile.LengthInByte>>8)&0xff);
DBUF[i+30]=(unsigned char)((ThisFile.LengthInByte>>16)&0xff);
DBUF[i+31]=(unsigned char)((ThisFile.LengthInByte>>24)&0xff);
if(!RBC_Write(DeviceInfo.RootStartSector+sector,1,DBUF))
return FALSE;
bStop=1;
break;
}
}
if(bStop==1)
break;
}
}
//////////////////////////////////////////////////////////////////////////////
else
{
NowCluster=DirStartCluster;
do
{
NowSector=FirstSectorofCluster16(NowCluster);
for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
{
if(!RBC_Read(NowSector+sector,1,DBUF))
return FALSE;
for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
{
cnum=LSwapINT16(DBUF[i+26],DBUF[i+27]);
if((cnum==ThisFile.StartCluster)&&(DBUF[i]!=0xe5))
{
if(ThisFile.pointer>ThisFile.LengthInByte)
ThisFile.LengthInByte=ThisFile.pointer;
DBUF[i+28]=(unsigned char)(ThisFile.LengthInByte&0xff);
DBUF[i+29]=(unsigned char)((ThisFile.LengthInByte>>8)&0xff);
DBUF[i+30]=(unsigned char)((ThisFile.LengthInByte>>16)&0xff);
DBUF[i+31]=(unsigned char)((ThisFile.LengthInByte>>24)&0xff);
if(!RBC_Write(NowSector+sector,1,DBUF))
return FALSE;
bStop=1;
break;
}
}
if(bStop==1)break;
}
if(bStop==1)break;
NowCluster=GetNextClusterNum16(NowCluster);
}while(NowCluster<=0xffef);
if(NowCluster>0xffef)
return FALSE;
}
ThisFile.bFileOpen=1;
//////////////////////////////////////////////
return TRUE;
}
unsigned char RemoveFile16(char *str)
{
unsigned int sector,i,len;
unsigned char bStop,j;
char pBuffer[11];
char ch;
int k;
if(!bFlags.bits.SLAVE_IS_ATTACHED)
return FALSE;
if (*str == '.')
return FALSE;
i=0;
while (str[i] !=0)
{
ch = str[i];
if(ch == '\\' || ch == '/' || ch == ':' || ch == '*' || ch == '?'
|| ch == '"' || ch == '<' || ch == '>' || ch == '|') return FALSE;
i++;
}
for (i=0;i<11;i++)
pBuffer[i] = 0x20;
len = 0;
i=0;
while(str[i]!='.')
{
len++;
i++;
}
if (len<8)
{
i = 0;
while(str[i]!='.')
{
pBuffer[i] = str[i];
i++;
}
pBuffer[8] = str[i+1];
pBuffer[9] = str[i+2];
pBuffer[10] = str[i+3];
len = 0;
}
else
{
for (i=0;i<6;i++)
pBuffer[i] = str[i];
pBuffer[6] = '~';
pBuffer[7] = '1';
i=0;
while(str[i]!='.')
i++;
pBuffer[8] = str[i+1];
pBuffer[9] = str[i+2];
pBuffer[10] = str[i+3];
len = 0;
}
if(DirStartCluster==0)
{
////////////// 清除目錄/////////////////////////////////////
for(sector=0;sector<DeviceInfo.BPB_RootEntCnt;sector++)
{
//////////////////////////////////////////////////
if(!RBC_Read(DeviceInfo.RootStartSector+sector,1,DBUF))
return FALSE;
///////////////////////////////////////////////////
for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
{
if(DBUF[i]==0x00)
return FALSE;
///////////////////////////////////////////
j=0;
while(DBUF[i+j]==*(pBuffer+j))
{
j=j+1;
if(j>10) break;
}
if(j>10)
{
DBUF[i]=0xE5;
ThisFile.StartCluster=LSwapINT16(DBUF[i+26],DBUF[i+27]);
for(k=(i-32);k>=0;k=k-32)
{
if(DBUF[k+11]==0x0F)
DBUF[k]=0xE5;
else
break;
}
DelayMs(150);
if(!RBC_Write(DeviceInfo.RootStartSector+sector,1,DBUF))
return FALSE;
//////////////////// 清除FAT中的紀錄////////////////////////
DelayMs(100);
if(!DeleteClusterLink16(ThisFile.StartCluster))
return FALSE;
bStop=1;
break;
}
}//end for
if(bStop==1)
break;
}//end search
if(sector>=DeviceInfo.BPB_RootEntCnt)
return FALSE;
}
else
{
NowCluster=DirStartCluster;
do
{
NowSector=FirstSectorofCluster16(NowCluster);
for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
{
if(!RBC_Read(NowSector+sector,1,DBUF))
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