public static SCR DecodeSCR(byte[] response) { if (response?.Length != 8) { return(null); } SCR scr = new SCR { Structure = (byte)((response[0] & 0xF0) >> 4), Spec = (byte)(response[0] & 0x0F), DataStatusAfterErase = (response[1] & 0x80) == 0x80, Security = (byte)((response[1] & 0x70) >> 4), BusWidth = (byte)(response[1] & 0x0F), Spec3 = (response[2] & 0x80) == 0x80, ExtendedSecurity = (byte)((response[2] & 0x78) >> 3), Spec4 = (response[2] & 0x04) == 0x04, SpecX = (byte)(((response[2] & 0x03) << 2) + ((response[3] & 0xC0) >> 6)), CommandSupport = (byte)(response[3] & 0x0F), ManufacturerReserved = new byte[4] }; Array.Copy(response, 4, scr.ManufacturerReserved, 0, 4); return(scr); }
public static string PrettifySCR(SCR scr) { if (scr == null) { return(null); } StringBuilder sb = new StringBuilder(); sb.AppendLine("SecureDigital Device Configuration Register:"); if (scr.Structure != 0) { sb.AppendFormat("\tUnknown register version {0}", scr.Structure).AppendLine(); } if (scr.Spec == 0 && scr.Spec3 == false && scr.Spec4 == false && scr.SpecX == 0) { sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 1.0x"); } else if (scr.Spec == 1 && scr.Spec3 == false && scr.Spec4 == false && scr.SpecX == 0) { sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 1.10"); } else if (scr.Spec == 2 && scr.Spec3 == false && scr.Spec4 == false && scr.SpecX == 0) { sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 2.00"); } else if (scr.Spec == 2 && scr.Spec3 && scr.Spec4 == false && scr.SpecX == 0) { sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 3.0x"); } else if (scr.Spec == 2 && scr.Spec3 && scr.Spec4 && scr.SpecX == 0) { sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 4.xx"); } else if (scr.Spec == 2 && scr.Spec3 && scr.SpecX == 1) { sb.AppendLine("\tDevice follows SecureDigital Physical Layer Specification version 5.xx"); } else { sb .AppendFormat("\tDevice follows SecureDigital Physical Layer Specification with unknown version {0}.{1}.{2}.{3}", scr.Spec, scr.Spec3, scr.Spec4, scr.SpecX).AppendLine(); } switch (scr.Security) { case 0: sb.AppendLine("\tDevice does not support CPRM"); break; case 1: sb.AppendLine("\tDevice does not use CPRM"); break; case 2: sb.AppendLine("\tDevice uses CPRM according to specification version 1.01"); break; case 3: sb.AppendLine("\tDevice uses CPRM according to specification version 2.00"); break; case 4: sb.AppendLine("\tDevice uses CPRM according to specification version 3.xx"); break; default: sb.AppendFormat("\tDevice uses unknown CPRM specification with code {0}", scr.Security) .AppendLine(); break; } if ((scr.BusWidth & 0x01) == 0x01) { sb.AppendLine("\tDevice supports 1-bit data bus"); } if ((scr.BusWidth & 0x04) == 0x04) { sb.AppendLine("\tDevice supports 4-bit data bus"); } if (scr.ExtendedSecurity != 0) { sb.AppendLine("\tDevice supports extended security"); } if ((scr.CommandSupport & 0x08) == 0x08) { sb.AppendLine("\tDevice supports extension register multi-block commands"); } if ((scr.CommandSupport & 0x04) == 0x04) { sb.AppendLine("\tDevice supports extension register single-block commands"); } if ((scr.CommandSupport & 0x02) == 0x02) { sb.AppendLine("\tDevice supports set block count command"); } if ((scr.CommandSupport & 0x01) == 0x01) { sb.AppendLine("\tDevice supports speed class control command"); } return(sb.ToString()); }