📄 sd.lst
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1019 2 return STATUS_SUCCESS;
1020 2 }
1021 1 return STATUS_FLASH_ERROR;
1022 1
1023 1 }
1024
1025 /*
1026 //----------------------------------------------------------------------------
1027 // Description:
1028 // Read one of the other sectors,except the first sector,
1029 // when execute multi-read command.
1030 //----------------------------------------------------------------------------
1031 #pragma OPTIMIZE(4)
1032 STATUS SdReadNextSectorData(void)
1033 {
1034 STATUS Status;
1035 bit Stop;
1036
1037 Stop = SectorCount == 1;//
1038 if (!SdCardExist())
1039 return STATUS_FLASH_ERROR;//如果卡拔出，直接返回！！
1040
1041 // SDMI_BUFBASE = (FIFO_ADDRESS_IN>>8);
1042
1043 SDMI_CMD=SD_CMD_RX_DATA_ONLY;
1044 SDMI_CTL|=bmSD_AUTO_CLK_EN;
1045 if ((Status = SdWaitCmd()) != STATUS_SUCCESS)
1046 return Status;
C51 COMPILER V7.02b SD 03/24/2008 15:52:29 PAGE 18
1047
1048 if(SDMI_ST&bmSD_CRC16_ERR) // CRC7 Error
1049 {
1050 SDMI_ST&=~bmSD_CRC16_ERR; // Clear INT
1051 return STATUS_DATA_ERROR;
1052 }
1053
1054 if (Stop)
1055 return SdStopCmd();//所有block的数据已传输完毕，停止命令
1056
1057 return STATUS_SUCCESS;
1058 } */
1059
1060 /*
1061
1062 STATUS SdReadNextSector(void)
1063 {
1064 BYTE RetryCount;
1065 STATUS Status;
1066 Status = SdReadNextSectorData();
1067 if(Status != STATUS_SUCCESS)
1068 {
1069 for(RetryCount = 0 ; RetryCount < 15; RetryCount ++)
1070 {
1071 Status = SdStopCmd();
1072 if(Status != STATUS_SUCCESS)
1073 continue;
1074 Status = SdReadOneSector();
1075 break;
1076 }
1077 }
1078 SectorStart ++;
1079 return Status;
1080 } */
1081
1082
1083 //--------------------------------------------------------------------
1084 // Write single sector of data to SD/MMC,
1085 // or write the first sector when execute multi-write command.
1086 //--------------------------------------------------------------------
1087 STATUS SdWriteOneSector(BYTE*buff, DWORD sector)
1088 {
1089 1 STATUS Status;
1090 1 BYTE CrcSts;
1091 1 int RetryCount1 , RetryCount2;
1092 1 bool ReadyForData;
1093 1 BYTE MMCerror1;//09.12
1094 1
1095 1 DWORD SectorStart,SectorCount;
1096 1 SectorStart= sector;
1097 1 SectorCount =1;
1098 1 if(SdCardExist()==0)
1099 1 return STATUS_NO_MEDIA; //Derek 2007.03.14
1100 1 if(SDMI_ST & bmSD_WR_PROTECT)
1101 1 return STATUS_WRITE_PROTECT;
1102 1
1103 1 SdWaitCard(); //保证上次操作完成！
1104 1
1105 1 for(RetryCount1 = 0; RetryCount1 < 10; RetryCount1++)
1106 1 {
1107 2 ReadyForData = false;
1108 2 for(RetryCount2 = 0; RetryCount2 < 20; RetryCount2++)
C51 COMPILER V7.02b SD 03/24/2008 15:52:29 PAGE 19
1109 2 {
1110 3 *((UINT32 *)(&SdCmdBuf[1])) = RCA;
1111 3 Status = SdSendCmd(SEND_STATUS, SdCmdBuf);
1112 3 if(Status != STATUS_SUCCESS)
1113 3 {
1114 4 //MMCerror1++;
1115 4 continue;}
1116 3 if(SdRespBuf[3] & 0x01) // READY_FOR_DATA in Card Status
1117 3 {
1118 4 ReadyForData = true;
1119 4 break;
1120 4 }
1121 3 }
1122 2 if(!ReadyForData)
1123 2 {
1124 3 CmdTimer=2;
1125 3 while(CmdTimer);
1126 3 continue;}
1127 2
1128 2 memcpy((BYTE xdata *)DMA_FIFOB0,buff, 512);
1129 2 SDMI_BUFBASE=(DMA_FIFOB0>>8);
1130 2 if(SdHcFlag) { //Derek 2007.07.02 对于HC SD，以sector为单位。
1131 3 *((UINT32 *)(&SdCmdBuf[1])) = SectorStart;
1132 3 } else //对于standard，以字节为单位。
1133 2 *((UINT32 *)(&SdCmdBuf[1])) =
1134 2 SectorStart << BYTES_PER_SECTOR_SHIFT; //
1135 2 //***********************
1136 2 if (SectorCount > 1) // Muti-Write.
1137 2 {
1138 3 Status = SdSendCmd(WRITE_MUL_BLOCK, SdCmdBuf);
1139 3 if(Status != STATUS_SUCCESS)
1140 3 continue;
1141 3 }
1142 2 else
1143 2 {
1144 3
1145 3 Status = SdSendCmd(WRITE_BLOCK, SdCmdBuf);
1146 3 if(Status != STATUS_SUCCESS)
1147 3 continue;
1148 3
1149 3 }
1150 2 //*******************************
1151 2
1152 2 CrcSts = (SDMI_ST&0x38) >> 3;
1153 2 if(CrcSts != GOOD_CRC16_STS) {
1154 3 MMCerror1 ++;
1155 3 continue;
1156 3 }
1157 2 else
1158 2 return STATUS_SUCCESS;
1159 2 }
1160 1
1161 1
1162 1 return STATUS_FLASH_ERROR;
1163 1 }
1164 /*
1165 STATUS SdWriteSector()
1166 {
1167 STATUS Status = SdWriteOneSector();
1168
1169 SectorStart ++;
1170 return Status;
C51 COMPILER V7.02b SD 03/24/2008 15:52:29 PAGE 20
1171 }
1172
1173 //----------------------------------------------------------------------------
1174 // Description:
1175 // Write one sector of data from the SD device
1176 //----------------------------------------------------------------------------
1177 STATUS SdWriteNextSector()
1178 {
1179 STATUS Status;
1180 BYTE CrcSts;
1181 bit Stop;
1182
1183
1184 Stop = SectorCount == 1;
1185 if(SdCardExist()==0)
1186 return STATUS_NO_MEDIA; //Derek 2007.03.14
1187 SdWaitCard();
1188 CmdTimer = SD_CMD_TIMEOUT;
1189 if (CmdTimer == 0)
1190 {
1191 return STATUS_FLASH_ERROR;
1192 }
1193
1194 // SDMI_BUFBASE=(FIFO_ADDRESS_OUT>>8);
1195
1196 SDMI_CMD=SD_CMD_TX_DATA_ONLY;
1197 if ((Status = SdWaitCmd()) != STATUS_SUCCESS)
1198 return Status;
1199 CrcSts = (SDMI_ST&0x38) >> 3;
1200 if (CrcSts != GOOD_CRC16_STS)
1201 {
1202 return STATUS_DATA_ERROR;
1203 }
1204
1205 if (Stop)
1206 return SdStopCmd();
1207
1208 return STATUS_SUCCESS;
1209 } */
1210 #if 0
//--------------用于SD1.10,2.0卡function 切换----------------------
//主要是为了切换到high speed mode。
STATUS SDCMD6Test()
{
STATUS Status;
int i=0;
SDMI_BUFBASE=0xF2; //FIFOB1
SDMI_LENH = 0;
SDMI_LENL = 64;
*((UINT32 *)(&SdCmdBuf[1])) = 0x00FFFFF1; //check switchable function(mode0)
Status = SdSendCmd(CMD6, SdCmdBuf); //CMD6-adtc command type
SDMI_LENH = 0X02;
SDMI_LENL = 0;
if(Status != STATUS_SUCCESS)
return Status;
SDMI_LENH = 0;
SDMI_LENL = 64;
*((UINT32 *)(&SdCmdBuf[1])) = 0x80FFFFF1; //switch card function(mode1)
Status = SdSendCmd(CMD6, SdCmdBuf);
SDMI_LENH = 0X02;
C51 COMPILER V7.02b SD 03/24/2008 15:52:29 PAGE 21
SDMI_LENL = 0;
if(Status != STATUS_SUCCESS)
return Status;
return Status;
}
#endif
1239 //--------------------------------------------------------------------
1240 // Initialization sequence of SD/MMC
1241 //--------------------------------------------------------------------
1242 STATUS SdReadFlashInfo(void)
1243 {
1244 1 STATUS Status;
1245 1 int RetryCount;
1246 1
1247 1 for(RetryCount = 0; RetryCount < 5; RetryCount++)
1248 1 {
1249 2 Status = SdReset();
1250 2 if(Status != STATUS_SUCCESS)
1251 2 continue;
1252 2 ////////////////SD 2.00 card detect.
1253 2 Status = SdSendIFCon(); //SD2.0 only，
1254 2 if(Status == STATUS_SUCCESS)
1255 2 SdVer2Flag = 2; //SD 2.00 card
1256 2 else
1257 2 SdVer2Flag = 0; //non-Ver2.00 card.
1258 2 /////////////////////
1259 2 Status = SdDetect();
1260 2 if(Status != STATUS_SUCCESS)
1261 2 continue;
1262 2
1263 2 Status = SdGoIdentifyState();
1264 2 if(Status != STATUS_SUCCESS)
1265 2 continue;
1266 2
1267 2 Status = SdGoStandbyState();
1268 2 if(Status != STATUS_SUCCESS)
1269 2 continue;
1270 2
1271 2 Status = SdReadCSD();
1272 2 ⌨️ 快捷键说明
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