UDISK_SOURCE.rar

/*******************************Copyright (c)*************************************** 桑海为实业发展有限公司 自 动 化 钢 琴 研 究 所 http://www.pianoshw.com E-mail:shw@pianoshw.com ----------------------------------文件信息------------------------------------------- 文 件 名 : HPI.C 创 建 人 : 吴应斌 创 建 日 期: 2004-6-7 9:30 功 能 描 述: SL811人机接口文件 ************************************************************************************/ #include <COMMON.H> #include <TPBULK.H> #include <HPI.H> #include <HAL.H> #include <FAT.H> extern XXGFLAGS bdata bXXGFlags; extern unsigned char xdata DBUF[BUFFER_LENGTH]; unsigned char xdata UARTBUF[UARTBUF_LENGTH]; SYS_INFO_BLOCK xdata DeviceInfo; UART_CMD_BLOCK xdata UartCmdBlock; UART_RSP_BLOCK xdata UartRspBlock; FILE_INFO xdata ThisFile; extern FREE_FAT_INFO xdata FreeFat; void UartSendRsp(void) { unsigned int i; unsigned char *pBuf=(unsigned char *)&UartRspBlock; for(i=0;i<64;i++) ComSendByte(*(pBuf+i)); if(UartRspBlock.len!=0) { for(i=0;i<UartRspBlock.len;i++) ComSendByte(*(UartRspBlock.pbuffer+i)); } } /*----------------------------------------------------------------------------------- 名称: void UartHandler(void) 功能: Uart命令管理. -----------------------------------------------------------------------------------*/ void UartHandler(void) { unsigned char retStatus; unsigned int len; unsigned long pointer; UartRspBlock.errcode=ERC_OK; UartRspBlock.len=0; switch(UartCmdBlock.cmd) { case CMD_RESET: break; case CMD_DETECT_DEVICE: ThisFile.bFileOpen=0; retStatus=DetectDevice(); UartRspBlock.cmd=CMD_DETECT_DEVICE_RSP; break; case CMD_OPEN_FILE: retStatus=OpenFile(UartCmdBlock.CmdBlock.Cmd_OpenFile.filename); UartRspBlock.cmd=CMD_OPEN_FILE_RSP; break; case CMD_CREATE_FILE: retStatus=OpenFile(UartCmdBlock.CmdBlock.Cmd_OpenFile.filename); if(UartRspBlock.errcode==ERC_FILENOTFOUND) { retStatus=CreateFile(UartCmdBlock.CmdBlock.Cmd_CreateFile.item); } UartRspBlock.cmd=CMD_CREATE_FILE_RSP; break; case CMD_READ_FILE: len=SwapINT16(UartCmdBlock.CmdBlock.Cmd_ReadFile.readLength); retStatus=ReadFile(len,UARTBUF); UartRspBlock.cmd=CMD_READ_FILE_RSP; break; case CMD_WRITE_FILE: len=SwapINT16(UartCmdBlock.CmdBlock.Cmd_WriteFile.writeLength); retStatus=WriteFile(len,UARTBUF); UartRspBlock.cmd=CMD_WRITE_FILE_RSP; break; case CMD_LIST: ThisFile.bFileOpen=0; retStatus=List(); UartRspBlock.cmd=CMD_LIST_RSP; break; case CMD_REMOVE_FILE: ThisFile.bFileOpen=0; retStatus=RemoveFile(UartCmdBlock.CmdBlock.Cmd_RemoveFile.filename); UartRspBlock.cmd=CMD_REMOVE_FILE_RSP; break; case CMD_GET_CAPACITY: ThisFile.bFileOpen=0; retStatus=GetCapacity(); UartRspBlock.cmd=CMD_GET_CAPACITY_RSP; break; case CMD_GET_FREE_CAPACITY: ThisFile.bFileOpen=0; retStatus=GetFreeCapacity(); UartRspBlock.cmd=CMD_GET_FREE_CAPACITY_RSP; break; case CMD_SET_FILE_POINTER: pointer=SwapINT32(UartCmdBlock.CmdBlock.Cmd_SetFilePointer.pointer); retStatus=SetFilePointer(pointer); UartRspBlock.cmd=CMD_SET_FILE_POINTER_RSP; break; case CMD_GET_VERSION: ThisFile.bFileOpen=0; retStatus=GetFirmwareVersion(); UartRspBlock.cmd=CMD_GET_VERSION_RSP; break; default: bXXGFlags.bits.bCOM_ERR=1; break; } UartRspBlock.result=retStatus; UartRspBlock.pbuffer=UARTBUF; UartSendRsp(); } /*----------------------------------------------------------------------------------- 名称: unsigned char DetectDevice(void) 功能: 磁盘有无检测. -----------------------------------------------------------------------------------*/ unsigned char DetectDevice(void) { #define RspBlockDetectDevice UartRspBlock.RspBlock.Rsp_DetectDevice return bXXGFlags.bits.SLAVE_IS_ATTACHED; #undef RspBlockDetectDevice } /*----------------------------------------------------------------------------------- 名称: unsigned char List(void) 功能: 列出目录中所有文件. -----------------------------------------------------------------------------------*/ unsigned char List(void) { #define RspBlockList UartRspBlock.RspBlock.Rsp_List unsigned int item,i; unsigned char j,k,bstop,sector; if(!bXXGFlags.bits.SLAVE_IS_ATTACHED) { UartRspBlock.errcode=ERC_NODEVICE; return FALSE; } item=0; bstop=0; for(sector=0;sector<DeviceInfo.BPB_RootEntCnt;sector++) { if(!RBC_Read(DeviceInfo.RootStartSector+sector,1,DBUF)) { UartRspBlock.errcode=ERC_DEVICEERR; 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 if((DBUF[i]&0x40==0x40)&&(DBUF[i+11]==0xff)) { j=DBUF[i]&0x0F; j=j+1; for(k=0;k<j*32;k++) UARTBUF[item*32+k]=DBUF[i+k]; i=i+(j-1)*32; item=item+j; } else { for(k=0;k<32;k++) UARTBUF[item*32+k]=DBUF[i+k]; item=item+1; } } if(bstop==1) break; } RspBlockList.len=SwapINT16(item*32); UartRspBlock.len=item*32; return TRUE; #undef RspBlockList } /*----------------------------------------------------------------------------------- 名称: unsigned char OpenFile(unsigned char *pBuffer) 功能: 打开文件. -----------------------------------------------------------------------------------*/ unsigned char OpenFile(unsigned char *pBuffer) { #define RspBlockOpenFile UartRspBlock.RspBlock.Rsp_OpenFile unsigned int i; unsigned char j,bstop,sector; PDIR_INFO pDirInfo; if(!bXXGFlags.bits.SLAVE_IS_ATTACHED) { UartRspBlock.errcode=ERC_NODEVICE; return FALSE; } ThisFile.bFileOpen=0; for(sector=0;sector<DeviceInfo.BPB_RootEntCnt;sector++) { if(!RBC_Read(DeviceInfo.RootStartSector+sector,1,DBUF)) { UartRspBlock.errcode=ERC_DEVICEERR; return FALSE; } for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32) { if(DBUF[i]==0x00) { UartRspBlock.errcode=ERC_FILENOTFOUND; return FALSE; } j=0; while(DBUF[i+j]==*(pBuffer+j)) { j=j+1; if(j>10) break; } if(j>10) { for(j=0;j<32;j++) RspBlockOpenFile.item[j]=DBUF[i+j]; ThisFile.bFileOpen=1; bstop=1; break; } } if(bstop==1) break; } if(sector>=DeviceInfo.BPB_RootEntCnt) { UartRspBlock.errcode=ERC_FILENOTFOUND; return FALSE; } pDirInfo=(PDIR_INFO)RspBlockOpenFile.item; ThisFile.StartCluster=SwapINT16(pDirInfo->startCluster); ThisFile.LengthInByte=SwapINT32(pDirInfo->length); ThisFile.ClusterPointer=ThisFile.StartCluster; ThisFile.SectorPointer=FirstSectorofCluster(ThisFile.StartCluster); ThisFile.OffsetofSector=0; ThisFile.SectorofCluster=0; ThisFile.FatSectorPointer=0; ThisFile.pointer=0; FreeFat.SectorNum=DeviceInfo.FatStartSector; FreeFat.OldSectorNum=DeviceInfo.FatStartSector; FreeFat.OffsetofSector=2; return TRUE; #undef RspBlockOpenFile } /*----------------------------------------------------------------------------------- 名称: unsigned char ReadFile(unsigned int readLength,unsigned char *pBuffer) 功能: 读取文件. -----------------------------------------------------------------------------------*/ unsigned char ReadFile(unsigned int readLength,unsigned char *pBuffer) { #define RspBlockRea