📄 hpi.lst
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853 3
854 3 }//end search
855 2 if(sector>=DeviceInfo.BPB_RootEntCnt)
856 2 return FALSE;
857 2 }
858 1 else
859 1 {
860 2 NowCluster=DirStartCluster;
C51 COMPILER V7.06 HPI 08/10/2005 23:25:28 PAGE 15
861 2 do
862 2 {
863 3 NowSector=FirstSectorofCluster(NowCluster);
864 3 for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
865 3 {
866 4 if(!RBC_Read(NowSector+sector,1,DBUF))
867 4 return FALSE;
868 4 for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
869 4 {
870 5 if(DBUF[i]==0x00)
871 5 return FALSE;
872 5 j=0;
873 5 while(DBUF[i+j]==*(pBuffer+j))
874 5 {
875 6 j=j+1;
876 6 if(j>10)
877 6 break;
878 6 }
879 5 if(j>10)
880 5 {
881 6 DBUF[i]=0xE5;
882 6 ThisFile.StartCluster=LSwapINT16(DBUF[i+26],DBUF[i+27]);
883 6 for(k=(i-32);k>=0;k=k-32)
884 6 {
885 7 if(DBUF[k+11]==0x0F)
886 7 DBUF[k]=0xE5;
887 7 else
888 7 break;
889 7 }
890 6 DelayMs(15);
891 6 if(!RBC_Write(NowSector+sector,1,DBUF))
892 6 return FALSE;
893 6 //////////////////// 清除FAT中的纪录////////////////////////
894 6 DelayMs(10);
895 6 if(!DeleteClusterLink(ThisFile.StartCluster))
896 6 return FALSE;
897 6 bStop=1;
898 6 break;
899 6 }
900 5 }
901 4 if(bStop==1)break;
902 4 }
903 3 if(bStop==1)break;
904 3 NowCluster=GetNextClusterNum(NowCluster);
905 3 }while(NowCluster<=0xffef);
906 2
907 2 if(NowCluster>0xffef)
908 2 return FALSE;
909 2 }
910 1 return TRUE;
911 1 }
912
913 unsigned char GetCapacity(void)
914 {
915 1 unsigned int sectorNum,i;
916 1 unsigned long FreeSize,Freesectorcnt;
917 1
918 1 if(!bFlags.bits.SLAVE_IS_ATTACHED)
919 1 return FALSE;
920 1
921 1 ////////////////////////////////////////////////////////////////////////
922 1 sectorNum=DeviceInfo.FatStartSector;
C51 COMPILER V7.06 HPI 08/10/2005 23:25:28 PAGE 16
923 1 Freesectorcnt=0;
924 1 while(sectorNum<DeviceInfo.BPB_FATSz16+DeviceInfo.FatStartSector)
925 1 {
926 2
927 2 if(RBC_Read(sectorNum,1,DBUF))
928 2 {
929 3 for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+2)
930 3 {
931 4 if((DBUF[i]==0x00)&&(DBUF[i+1]==0x00))
932 4 {
933 5 Freesectorcnt++;
934 5 }
935 4 }
936 3 }
937 2 else
938 2 return FALSE;
939 2 sectorNum++;
940 2 }
941 1
942 1 ////////////////////////////////////////////////////////////////////////
943 1 FreeSize=DeviceInfo.BPB_BytesPerSec*DeviceInfo.BPB_SecPerClus;
944 1 FreeSize=Freesectorcnt*FreeSize;
945 1
946 1 UARTBUF[0]=(unsigned char)((FreeSize>>24)&0xff);
947 1 UARTBUF[1]=(unsigned char)((FreeSize>>16)&0xff);
948 1 UARTBUF[2]=(unsigned char)((FreeSize>>8)&0xff);
949 1 UARTBUF[3]=(unsigned char)(FreeSize&0xff);
950 1 Response.len=4;
951 1 return TRUE;
952 1 }
953
954 unsigned char CreateDir(unsigned long len,unsigned char *pBuffer,unsigned char *pName)
955 {
956 1 unsigned int sector,i,j,DirCount;
957 1 unsigned int cnum,ClusterPointer;
958 1 unsigned char xdata bstop,InByte,bwrite;
959 1
960 1 if(!bFlags.bits.SLAVE_IS_ATTACHED)
961 1 return FALSE;
962 1 if((len%32)!=0)
963 1 return FALSE;
964 1 if((len+32)>DeviceInfo.BPB_BytesPerSec)
965 1 return FALSE;
966 1
967 1 ThisFile.bFileOpen=0;
968 1 ThisFile.FatSectorPointer=0;
969 1
970 1 cnum=GetFreeCusterNum();
971 1 if(cnum<0x02)
972 1 return FALSE;
973 1
974 1 pBuffer[11]=0x10;
975 1 pBuffer[26]=(unsigned char)(cnum);
976 1 pBuffer[27]=(unsigned char)(cnum>>8);
977 1 pBuffer[28]=0;pBuffer[29]=0;pBuffer[30]=0;pBuffer[31]=0;
978 1 bstop=0;
979 1
980 1 if(DirStartCluster==0)
981 1 {
982 2 /////// Search a free space in the root dir space and build the item ///
983 2 for(sector=0;sector<DeviceInfo.BPB_RootEntCnt;sector++)
984 2 {
C51 COMPILER V7.06 HPI 08/10/2005 23:25:28 PAGE 17
985 3 if(!RBC_Read(DeviceInfo.RootStartSector+sector,1,DBUF))
986 3 return FALSE;
987 3 DirCount=0;bwrite=0;
988 3 for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
989 3 {
990 4 if(len==0)
991 4 {
992 5 if((DBUF[i]==0x00)||(DBUF[i]==0xE5))
993 5 {
994 6 for(j=0;j<32;j++)
995 6 DBUF[i+j]=*(pBuffer+j);
996 6 if(!RBC_Write(DeviceInfo.RootStartSector+sector,1,DBUF))
997 6 return FALSE;
998 6 bstop=1;
999 6 break;
1000 6 }
1001 5 }
1002 4 else
1003 4 {
1004 5 if(DirCount==0)
1005 5 InByte=i;
1006 5 if(DBUF[i]==0xE5)
1007 5 DirCount++;
1008 5 else if(DBUF[i]==0x00)
1009 5 {
1010 6 DirCount++;
1011 6 DBUF[i]=0xE5;
1012 6 bwrite=1;
1013 6 }
1014 5 else
1015 5 DirCount=0;
1016 5
1017 5 if((DirCount*32)>=(len+32))
1018 5 {
1019 6 for(j=0;j<len;j++)
1020 6 DBUF[InByte+j]=*(pName+j);
1021 6
1022 6 for(j=0;j<32;j++)
1023 6 DBUF[InByte+len+j]=*(pBuffer+j);
1024 6
1025 6 if(!RBC_Write(DeviceInfo.RootStartSector+sector,1,DBUF))
1026 6 return FALSE;
1027 6 bstop=1;
1028 6 break;
1029 6 }
1030 5 }
1031 4 }
1032 3 if(bstop==1)break;
1033 3
1034 3 if((len!=0)&&(bwrite==1))
1035 3 {
1036 4 if(!RBC_Write(DeviceInfo.RootStartSector+sector,1,DBUF))
1037 4 return FALSE;
1038 4 }
1039 3 }
1040 2
1041 2 if(sector>=DeviceInfo.BPB_RootEntCnt)
1042 2 return FALSE;
1043 2 }
1044 1 ////////////////////////////////////////////////////////////
1045 1 else
1046 1 {
C51 COMPILER V7.06 HPI 08/10/2005 23:25:28 PAGE 18
1047 2 NowCluster=DirStartCluster;
1048 2 do
1049 2 {
1050 3 NowSector=FirstSectorofCluster(NowCluster);
1051 3 ClusterPointer=NowCluster;
1052 3 for(sector=0;sector<DeviceInfo.BPB_SecPerClus;sector++)
1053 3 {
1054 4 if(!RBC_Read(NowSector+sector,1,DBUF))
1055 4 return FALSE;
1056 4 DirCount=0;
1057 4 for(i=0;i<DeviceInfo.BPB_BytesPerSec;i=i+32)
1058 4 {
1059 5 if(len==0)
1060 5 {
1061 6 if((DBUF[i]==0x00)||(DBUF[i]==0xE5))
1062 6 {
1063 7 for(j=0;j<32;j++)
1064 7 DBUF[i+j]=*(pBuffer+j);
1065 7 if(!RBC_Write(NowS⌨️ 快捷键说明
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