REVISION
Definition in file SYS_serialNumber.c.
#include "../GENERIC/generic.h"
#include "../GENERIC/eeprom.h"
#include "../MENU/tmplt.h"
#include "../fat/fat.h"
#include "sys_hardware.h"
#include "sys_assert.h"
Include dependency graph for SYS_serialNumber.c:
Go to the source code of this file.
Functions | |
| int | SYS_serialNumber (int cmd, unsigned short *strSN) |
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abxxxxxcd
Definition at line 58 of file SYS_serialNumber.c. References FAT_cd(), FAT_fclose(), FAT_fopen(), FAT_fread(), FAT_fwrite(), GEN_ascii2hex(), GEN_eepromRead(), GEN_eepromWrite(), GEN_hex2ascii(), rb, SYS_die(), and wb. Referenced by UI_PSF_null(). 00059 {
00060 File *pSerialNumberFile;
00061 unsigned short SerialNumber[((SNLEN+1)/2)+2];
00062 unsigned short SerialNumber2[((SNLEN+1)/2)+2];
00063 unsigned short SerialNumberFilename[8];
00064 int Checksum;
00065 int ret = -1;
00066 int i;
00067 int chk;
00068 long lTmp;
00069
00070 FAT_cd(strDISKD);
00071
00072 GEN_readXstr((ULONG)text_snFname, (USHORT *)SerialNumberFilename, 10);
00073
00074 // +4 for 16-bit checksum
00075 // Serial number is stored and processed as two bytes per word.
00076 // For serial numbers to be written to eeprom, the checksum must be in 2's compliment
00077
00078 switch (cmd)
00079 {
00080 case SN_FILEWRITE:
00081 // Read EEPROM and create SN.txt if not already created.
00082 GEN_eepromRead(SERIAL_NUMBER_BEGIN, SNLEN+2, (int *)&SerialNumber[0]);
00083 Checksum = _SNChecksum(CHECKSUM_NORMAL, &SerialNumber[0]);
00084
00085 if (Checksum != SerialNumber[sizeof(SerialNumber)-2])
00086 {
00087 unsigned short DefaultSN[SNLEN];
00088
00089 /*GEN_readXdata((ULONG)text_defaultSN, (USHORT *)DefaultSN, SNLEN);
00090 for (i = 0; i < (sizeof(DefaultSN)-2); i += 2)
00091 {
00092 SerialNumber[i/2] = (DefaultSN[i]<<8)|DefaultSN[i+1];
00093 }
00094 */
00095 // DefaultSN comes as packed.----12/19/03. MG
00096 GEN_readXdata((ULONG)text_defaultSN, (USHORT*)&SerialNumber[0], (SNLEN+1)/2);
00097
00098 SerialNumber[sizeof(SerialNumber)-2] = _SNChecksum(CHECKSUM_NORMAL, &SerialNumber[0]);
00099 GEN_eepromWrite(SERIAL_NUMBER_BEGIN, SNLEN+2, (int *)&SerialNumber[0]);
00100 }
00101
00102 if ((pSerialNumberFile = FAT_fopen((char *)&SerialNumberFilename[0], rb )) != NULL)
00103 {
00104 if ((FAT_fread(pSerialNumberFile, &SerialNumber2[0], ((SNLEN+1)/2)+2 ) < ((SNLEN+1)/2)+1))
00105 {
00106 // File corrupted, set flag to regenerate. M.Gao 10/16/2002.
00107 chk = 0;
00108 }
00109 FAT_fclose(pSerialNumberFile );
00110
00111 chk = 1;
00112 for (i = 0; i < (SNLEN+1)/2; i++)
00113 {
00114 if (SerialNumber[i] != SerialNumber2[i])
00115 {
00116 chk = 0;
00117 break;
00118 }
00119 }
00120 ret = 0;
00121 }
00122 else chk = 0;
00123
00124 // Change checksums to ASCII.
00125 lTmp = GEN_hex2ascii(SerialNumber[sizeof(SerialNumber)-2]);
00126 SerialNumber[sizeof(SerialNumber)-2] = (lTmp>>16)&0x0ffff;
00127 SerialNumber[sizeof(SerialNumber)-1] = lTmp&0x0ffff;
00128
00129 if (!chk)
00130 {
00131 if ((pSerialNumberFile = FAT_fopen((char *)&SerialNumberFilename[0], wb )) == NULL)
00132 {
00133 break;
00134 }
00135
00136 i = FAT_fwrite(pSerialNumberFile, &SerialNumber[0], (SNLEN+1)/2+2);
00137 if (i < (SNLEN+1)/2+2) SYS_die(SYS_SERIALNUMBER);
00138 ret = 0;
00139 FAT_fclose(pSerialNumberFile );
00140 }
00141
00142 // Copy serial number into buffer.
00143 if(strSN)
00144 {
00145 i = 2 + (SNLEN+1)/2;
00146 memcpy(strSN, &SerialNumber[0], i);
00147 strSN[i] = 0;
00148 }
00149
00150 // Update the default serial number string for "properties" menu reference.
00151 GEN_writeXdata((ULONG)text_defaultSN, (USHORT*)&SerialNumber[0], (SNLEN+1)/2);
00152
00153 break;
00154
00155 case SN_FILEREAD:
00156 // Read back SN and updates EEPROM if valid SN detected.
00157 if ((pSerialNumberFile = FAT_fopen((char *)&SerialNumberFilename[0], rb )) == NULL)
00158 {
00159 break;
00160 }
00161 if ((FAT_fread(pSerialNumberFile, &SerialNumber[0], ((SNLEN+1)/2)+2 ) < ((SNLEN+1)/2)+2))
00162 {
00163 break;
00164 }
00165 FAT_fclose(pSerialNumberFile );
00166
00167 // Copy serial number into buffer.
00168 if(strSN)
00169 {
00170 i = 2 + (SNLEN+1)/2;
00171 memcpy(strSN, &SerialNumber[0], i);
00172 strSN[i] = 0;
00173 }
00174
00175 lTmp = (long)SerialNumber[sizeof(SerialNumber)-2]<<16;
00176 lTmp |= SerialNumber[sizeof(SerialNumber)-1];
00177 SerialNumber[sizeof(SerialNumber)-2] = GEN_ascii2hex(lTmp);
00178
00179 if ((Checksum = _SNChecksum(CHECKSUM_COMPL, &SerialNumber[0])) == SerialNumber[sizeof(SerialNumber)-2])
00180 {
00181 // checksum in file is the compliment, therefore, it's OK to write
00182 // the SN to EEPROM. But first, we need to negate the checksum and
00183 // replace the one read from the file with the inverse.
00184 Checksum = -1*Checksum;
00185 SerialNumber[sizeof(SerialNumber)-2] = Checksum;
00186 GEN_eepromWrite(SERIAL_NUMBER_BEGIN, SNLEN+2, (int *)&SerialNumber[0]);
00187
00188 if ((pSerialNumberFile = FAT_fopen((char *)&SerialNumberFilename[0], wb )) == NULL)
00189 {
00190 break;
00191 }
00192
00193 lTmp = GEN_hex2ascii(SerialNumber[sizeof(SerialNumber)-2]);
00194 SerialNumber[sizeof(SerialNumber)-2] = (lTmp>>16)&0x0ffff;
00195 SerialNumber[sizeof(SerialNumber)-1] = lTmp&0x0ffff;
00196
00197 i = FAT_fwrite(pSerialNumberFile, &SerialNumber[0], (SNLEN+1)/2+2);
00198 if (i < (SNLEN+1)/2+2) SYS_die(SYS_SERIALNUMBER2);
00199 ret = 0;
00200 FAT_fclose(pSerialNumberFile );
00201
00202 // Update the default serial number string for "properties" menu reference.
00203 GEN_writeXdata((ULONG)text_defaultSN, (USHORT*)&SerialNumber[0], (SNLEN+1)/2);
00204 }
00205 break;
00206 }
00207
00208 return(ret);
00209 }
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1.3.9.1