📄 hpi16.c
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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(NowSector+sector,1,DBUF))
return FALSE;
//////////////////// 清除FAT中的纪录////////////////////////
DelayMs(100);
if(!DeleteClusterLink16(ThisFile.StartCluster))
return FALSE;
bStop=1;
break;
}
}
if(bStop==1)break;
}
if(bStop==1)break;
NowCluster=GetNextClusterNum16(NowCluster);
}while(NowCluster<=0xffef);
if(NowCluster>0xffef)
return FALSE;
}
return TRUE;
}
unsigned long GetCapacity16(void)
{
unsigned int sectorNum,Freesectorcnt,i;
unsigned long FreeSize;
if(!bFlags.bits.SLAVE_IS_ATTACHED)
return FALSE;
////////////////////////////////////////////////////////////////////////
sectorNum=DeviceInfo.FatStartSector;
Freesectorcnt=0;
while(sectorNum<DeviceInfo.BPB_FATSz16+DeviceInfo.FatStartSector)
{
if(RBC_Read(sectorNum,1,DBUF))
{
for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+2)
{
if((DBUF[i]==0x00)&&(DBUF[i+1]==0x00))
{
Freesectorcnt++;
}
}
}
else
return FALSE;
sectorNum++;
}
////////////////////////////////////////////////////////////////////////
FreeSize=DeviceInfo.BPB_BytesPerSec*DeviceInfo.BPB_SecPerClus;
FreeSize=Freesectorcnt*FreeSize;
return FreeSize;
}
unsigned char CreateDir16(char *str)
{
unsigned int sector,i,j,DirCount;
unsigned long cnum;
unsigned char bstop,InByte,bwrite;
unsigned long ClusterPointer;
unsigned char pBuffer[32]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
unsigned char ch;
unsigned char len=0;
unsigned char *pName;
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;
if (islower(ch)) str[i] = toupper(ch);
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++;
}
len = 0;
}
else
{
for (i=0;i<6;i++)
pBuffer[i] = str[i];
pBuffer[6] = '~';
pBuffer[7] = '1';
i=0;
len = 0;
}
ThisFile.bFileOpen=0;
ThisFile.FatSectorPointer=0;
cnum=GetFreeCusterNum32();
if(cnum<0x02)
return FALSE;
pBuffer[11]= 0x10;
pBuffer[21]= cnum>>24;
pBuffer[20]= cnum>>16;
pBuffer[27]= cnum>>8;
pBuffer[26]= cnum;
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;
}
////////////////////////////////////////////////////////////////
for(i=64;i<DeviceInfo.BPB_BytesPerSec;i++) DBUF[i]=0x00;
for(i=0;i<43;i++) DBUF[i]=0x20;
DBUF[0]=0x2e;
for(i=11;i<32;i++) DBUF[i]=pBuffer[i];
DBUF[32]=0x2e;DBUF[33]=0x2e;
for(i=43;i<64;i++) DBUF[i]=pBuffer[i-32];
DBUF[58]=(unsigned char)(DirStartCluster);
DBUF[59]=(unsigned char)(DirStartCluster>>8);
NowSector=FirstSectorofCluster16(cnum);
if(!RBC_Write(NowSector,1,DBUF))
return FALSE;
DirStartCluster=cnum;
ThisFile.ClusterPointer=0;
return TRUE;
}
unsigned char DownDir16(char *pBuffer)
{
unsigned int i;
unsigned char j,bstop,sector;
if(!bFlags.bits.SLAVE_IS_ATTACHED)
return FALSE;
ThisFile.bFileOpen=0;
bstop=0;
if(DirStartCluster==0) //Root Dir
{
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+11]&0x10))
{
bstop=1;
break;}
}
if(bstop==1)break;
}
if(sector>=DeviceInfo.BPB_RootEntCnt)
return FALSE;
DirStartCluster=LSwapINT16(DBUF[i+26],DBUF[i+27]);
// ThisFile.ClusterPointer=DirStartCluster;
ThisFile.ClusterPointer=0;
return TRUE;
}
////////////////////////////////////////////
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)
{
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+11]&0x10))
{bstop=1;break;}
}
if(bstop==1)break;
}
if(bstop==1)break;
NowCluster=GetNextClusterNum16(NowCluster);
}while(NowCluster<=0xffef);
if(NowCluster>0xffef)
return FALSE;
DirStartCluster=LSwapINT16(DBUF[i+26],DBUF[i+27]);
// ThisFile.ClusterPointer=DirStartCluster;
ThisFile.ClusterPointer=0;
return TRUE;
}
}
unsigned char UpDir16()
{
if(!bFlags.bits.SLAVE_IS_ATTACHED)
return FALSE;
if(DirStartCluster==0) //Root Dir
return TRUE;
ThisFile.bFileOpen=0;
NowSector=FirstSectorofCluster16(DirStartCluster);
if(!RBC_Read(NowSector,1,DBUF))
return FALSE;
if(DBUF[32]!=0x2e&&DBUF[33]!=0x2e) //..
return FALSE;
DirStartCluster=LSwapINT16(DBUF[58],DBUF[59]);
ThisFile.ClusterPointer=0;
return TRUE;
}
unsigned char UpRootDir16()
{
if(!bFlags.bits.SLAVE_IS_ATTACHED)
return FALSE;
ThisFile.bFileOpen=0;
DirStartCluster=0; //Root Dir
return TRUE;
}
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