📄 hpi.c
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#include "common.h"
#include "DEVICE.H"
#include "HPI.H"
#include "HAL.H"
#include "Fat.h"
#include "Fat32.h"
#include "HPI32.H"
extern FLAGS bdata bFlags;
extern unsigned char xdata DBUF[];//BUFFER_LENGTH];
//////////////////////////////////////////
unsigned char xdata UARTBUF[UARTBUF_LENGTH];
SYS_INFO_BLOCK xdata DeviceInfo;
FILE_INFO xdata ThisFile;
Command_Def xdata Command;
Response_Def xdata Response;
unsigned int xdata DirStartCluster,NowCluster;
unsigned long xdata NowSector;
ShowFileName_Def xdata ShowFileName[MaxLFNum]; //long file struct
/////////////////////////////////////////////
void UartSendRsp(void)
{
unsigned int i;
unsigned char *pBuf=(unsigned char *)&Response;
MCU_LED4=0;
for(i=0;i<5;i++)
ComSendByte(*(pBuf+i));
if(Response.len!=0)
{
for(i=0;i<Response.len;i++)
ComSendByte(UARTBUF[i]);
}
MCU_LED4=1;
}
unsigned char UartHandler(void)
{
Response.Result=0;Response.len=0;
switch(Command.CLass)
{
case 0x00: //List
Response.Result=List();
break;
case 0x01: //Open File
Response.Result=OpenFile(Command.Parameter);
break;
case 0x02: //Read File
Response.Result=ReadFile(Command.len,UARTBUF);
break;
case 0x03: //Set Pointer
Response.Result=SetFilePointer(Command.len);
break;
case 0x04: //Great File
Response.Result=OpenFile(Command.Parameter);
if(Response.Result)
{
Response.Result=SetFilePointer(ThisFile.LengthInByte);
}
else
Response.Result=CreateFile(Command.len,Command.Parameter,UARTBUF);
break;
case 0x05: //Write File
Response.Result=WriteFile(Command.len,UARTBUF);
break;
case 0x06: //Remove File
ThisFile.bFileOpen=0;
Response.Result=RemoveFile(Command.Parameter);
break;
case 0x07: //Get Space
Response.Result=GetCapacity();
break;
case 0x08: //DetectDisk
if(bFlags.bits.SLAVE_IS_ATTACHED)
Response.Result=1;
break;
case 0x09: //Great Dir
Response.Result=DownDir(Command.Parameter);
if(!Response.Result)
Response.Result=CreateDir(Command.len,Command.Parameter,UARTBUF);
break;
case 0x0a: //Down Dir
Response.Result=DownDir(Command.Parameter);
break;
case 0x0b: //Up Dir
Response.Result=UpDir();
break;
case 0x0c: //Up RootDir
Response.Result=UpRootDir();
break;
}
UartSendRsp();
///////////////////////////////
return TRUE;
}
unsigned char List(void)
{
unsigned int item,i;
unsigned char k,bstop,sector;
unsigned char Lcount,Ncount,base;
if(!bFlags.bits.SLAVE_IS_ATTACHED)
return FALSE;
item=0;
bstop=0;
////////////////////////////////////
Lcount=0;
for(i=0;i<MaxLFNum;i++)
{
ShowFileName[i].LongName[0]=0x00;
ShowFileName[i].LongName[1]=0x00;
}
/////////////////////////////////////
if(DirStartCluster==0) //Root Dir
{
for(sector=0;sector<DeviceInfo.BPB_RootEntCnt;sector++)
{
if(!SdReadSector(DeviceInfo.RootStartSector+sector,1,DBUF))
return FALSE;
for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
{
if(DBUF[i]==0x00)
{bstop=1;
break;}
else if(DBUF[i]==0xE5)
continue;
else
{
for(k=0;k<32;k++)
UARTBUF[item*32+k]=DBUF[i+k];
item=item+1;
if(item>=(UARTBUF_LENGTH/32)) {bstop=1;break;} //串口缓冲 只能有512项目录，强行结束
/////////////////////////////////
if(Lcount<MaxLFNum)
{
if(DBUF[i+11]==0x0F)
{
base=((DBUF[i]&0x1F)-1)*26;
if(base<=224)
{
Ncount=0;
for(k=1;k<11;k++)
{
ShowFileName[Lcount].LongName[base+Ncount]=DBUF[i+k];
Ncount++;
}
for(k=14;k<26;k++)
{
ShowFileName[Lcount].LongName[base+Ncount]=DBUF[i+k];
Ncount++;
}
for(k=28;k<32;k++)
{
ShowFileName[Lcount].LongName[base+Ncount]=DBUF[i+k];
Ncount++;
}
}
}
else
{
for(k=0;k<32;k++)
ShowFileName[Lcount].item[k]=DBUF[i+k];
Lcount++;
}
}//if(Lcount<MaxLFNum)
/////////////////////////////////
}
}
if(bstop==1)break;
}
Response.len=item*32;
return TRUE;
}
//////////////////////////////////////////////////////////////////
else //Son Dir
{
NowCluster=DirStartCluster;
do
{
NowSector=FirstSectorofCluster(NowCluster);
for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
{
if(!SdReadSector(NowSector+sector,1,DBUF))
return FALSE;
for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
{
if(DBUF[i]==0x00)
{bstop=1;break;}
else if(DBUF[i]==0xE5)
continue;
else
{
for(k=0;k<32;k++)
UARTBUF[item*32+k]=DBUF[i+k];
item=item+1;
if(item>=(UARTBUF_LENGTH/32)) {bstop=1;break;} //串口缓冲 只能有512项目录，强行结束
/////////////////////////////////
if(Lcount<MaxLFNum)
{
if(DBUF[i+11]==0x0F)
{
base=((DBUF[i]&0x1F)-1)*26;
if(base<=224)
{
Ncount=0;
for(k=1;k<11;k++)
{
ShowFileName[Lcount].LongName[base+Ncount]=DBUF[i+k];
Ncount++;
}
for(k=14;k<26;k++)
{
ShowFileName[Lcount].LongName[base+Ncount]=DBUF[i+k];
Ncount++;
}
for(k=28;k<32;k++)
{
ShowFileName[Lcount].LongName[base+Ncount]=DBUF[i+k];
Ncount++;
}
}
}
else
{
for(k=0;k<32;k++)
ShowFileName[Lcount].item[k]=DBUF[i+k];
Lcount++;
}
}//if(Lcount<MaxLFNum)
/////////////////////////////////
}
}
if(bstop==1)break;
}
if(bstop==1)break;
NowCluster=GetNextClusterNum(NowCluster);
}while(NowCluster<=0xffef);
Response.len=item*32;
return TRUE;
}
}
unsigned char OpenFile(unsigned char *pBuffer)
{
unsigned int i;
unsigned char j,bstop,sector;
if(!bFlags.bits.SLAVE_IS_ATTACHED)
return FALSE;
ThisFile.bFileOpen=0;
if(DirStartCluster==0) //Root Dir
{
for(sector=0;sector<DeviceInfo.BPB_RootEntCnt;sector++)
{
if(!SdReadSector(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)!=0x10)
{
for(j=0;j<32;j++)
UARTBUF[j]=DBUF[i+j];
bstop=1;
break;}
}
if(bstop==1)break;
}
if(sector>=DeviceInfo.BPB_RootEntCnt)
return FALSE;
}
///////////////////////////////////////////////////////////////////////////////////////
else
{
NowCluster=DirStartCluster;
do
{
NowSector=FirstSectorofCluster(NowCluster);
for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
{
if(!SdReadSector(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)!=0x10)
{
for(j=0;j<32;j++)
UARTBUF[j]=DBUF[i+j];
bstop=1;
break;
}
}
if(bstop==1)break;
}
if(bstop==1)break;
NowCluster=GetNextClusterNum(NowCluster);
}while(NowCluster<=0xffef);
if(NowCluster>0xffef)
return FALSE;
}
ThisFile.bFileOpen=1;
ThisFile.StartCluster=LSwapINT16(UARTBUF[26],UARTBUF[27]);
ThisFile.LengthInByte=LSwapINT32(UARTBUF[28],UARTBUF[29],UARTBUF[30],UARTBUF[31]);
ThisFile.ClusterPointer=ThisFile.StartCluster;
ThisFile.SectorPointer=FirstSectorofCluster(ThisFile.StartCluster);
ThisFile.OffsetofSector=0;
ThisFile.SectorofCluster=0;
ThisFile.FatSectorPointer=0;
ThisFile.pointer=0;
Response.len=32;
return TRUE;
}
unsigned char ReadFile(unsigned long readLength,unsigned char *pBuffer)
{
unsigned int len,i;
unsigned int tlen;
unsigned long blen;
if(!bFlags.bits.SLAVE_IS_ATTACHED)
return FALSE;
if(!ThisFile.bFileOpen)
return FALSE;
blen=readLength;
tlen=0;
if(readLength>MAX_READ_LENGTH)
return FALSE;
if(readLength+ThisFile.pointer>ThisFile.LengthInByte)
return FALSE;
////////////////////////////////////////////
while(readLength>0)
{
if(ThisFile.SectorofCluster>=DeviceInfo.BPB_SecPerClus)
{
ThisFile.SectorofCluster=0;
ThisFile.ClusterPointer=GetNextClusterNum(ThisFile.ClusterPointer);
if(ThisFile.ClusterPointer>0xffef)
return FALSE;
ThisFile.SectorPointer=FirstSectorofCluster(ThisFile.ClusterPointer);
}
if(readLength+ThisFile.OffsetofSector>DeviceInfo.BPB_BytesPerSec)
len=DeviceInfo.BPB_BytesPerSec;
else
len=readLength+ThisFile.OffsetofSector;
//////////////////////////////////////////////////////
if(ThisFile.OffsetofSector>0)
{
if(SdReadSector(ThisFile.SectorPointer,1,DBUF))
{
len=len-ThisFile.OffsetofSector;
for(i=0;i<len;i++)
*(pBuffer+i)=DBUF[ThisFile.OffsetofSector+i];
ThisFile.OffsetofSector=ThisFile.OffsetofSector+len;
}
else
return FALSE;
}
else
{
if(!SdReadSector(ThisFile.SectorPointer,1,pBuffer+tlen))
return FALSE;
ThisFile.OffsetofSector=len;
}
////////////////////////////////////////////////////////////
readLength-=len;
tlen+=len;
/////////////////////////////////////////////////////////
if(ThisFile.OffsetofSector>=DeviceInfo.BPB_BytesPerSec)
{
ThisFile.OffsetofSector-=DeviceInfo.BPB_BytesPerSec;
ThisFile.SectorofCluster+=1;
ThisFile.SectorPointer+=1;
}
//////////////////////////////////////////////////////////////////
}//end while
ThisFile.bFileOpen=1;
ThisFile.pointer+=tlen;
//////////////////////////////////////////////
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