+ SCSI_Capacity_t* DeviceCapacity)\r
+{\r
+ if ((USB_HostState != HOST_STATE_Configured) || !(MSInterfaceInfo->State.Active))\r
+ return HOST_SENDCONTROL_DeviceDisconnect;\r
+\r
+ uint8_t ErrorCode = PIPE_RWSTREAM_NoError;\r
+\r
+ MS_CommandBlockWrapper_t SCSICommandBlock = (MS_CommandBlockWrapper_t)\r
+ {\r
+ .Signature = CBW_SIGNATURE,\r
+ .Tag = MSInterfaceInfo->State.TransactionTag,\r
+ .DataTransferLength = sizeof(SCSI_Capacity_t),\r
+ .Flags = COMMAND_DIRECTION_DATA_IN,\r
+ .LUN = LUNIndex,\r
+ .SCSICommandLength = 10,\r
+ .SCSICommandData =\r
+ {\r
+ SCSI_CMD_READ_CAPACITY_10,\r
+ 0x00, // Reserved\r
+ 0x00, // MSB of Logical block address\r
+ 0x00,\r
+ 0x00,\r
+ 0x00, // LSB of Logical block address\r
+ 0x00, // Reserved\r
+ 0x00, // Reserved\r
+ 0x00, // Partial Medium Indicator\r
+ 0x00 // Unused (control)\r
+ }\r
+ };\r
+ \r
+ if ((ErrorCode = MS_Host_SendCommand(MSInterfaceInfo, &SCSICommandBlock)) != PIPE_RWSTREAM_NoError)\r
+ {\r
+ Pipe_Freeze();\r
+ return ErrorCode;\r
+ }\r
+\r
+ if ((ErrorCode = MS_Host_WaitForDataReceived(MSInterfaceInfo)) != PIPE_RWSTREAM_NoError)\r
+ {\r
+ Pipe_Freeze();\r
+ return ErrorCode;\r
+ }\r
+\r
+ if ((ErrorCode = MS_Host_SendReceiveData(MSInterfaceInfo, &SCSICommandBlock, DeviceCapacity)) != PIPE_RWSTREAM_NoError)\r
+ {\r
+ Pipe_Freeze();\r
+ return ErrorCode;\r
+ }\r
+ \r
+ DeviceCapacity->Blocks = SwapEndian_32(DeviceCapacity->Blocks);\r
+ DeviceCapacity->BlockSize = SwapEndian_32(DeviceCapacity->BlockSize);\r
+ \r
+ MS_CommandStatusWrapper_t SCSICommandStatus;\r
+ if ((ErrorCode = MS_Host_GetReturnedStatus(MSInterfaceInfo, &SCSICommandStatus)) != PIPE_RWSTREAM_NoError)\r
+ {\r
+ Pipe_Freeze();\r
+ return ErrorCode;\r
+ }\r
+ \r
+ if (SCSICommandStatus.Status != SCSI_Command_Pass)\r
+ ErrorCode = MS_ERROR_LOGICAL_CMD_FAILED;\r
+\r
+ return ErrorCode;\r
+}\r