- /* Macros: */\r
- /** Mass Storage Class specific request to reset the Mass Storage interface, ready for the next command. */\r
- #define REQ_MassStorageReset 0xFF\r
-\r
- /** Mass Storage Class specific request to retrieve the total number of Logical Units (drives) in the SCSI device. */\r
- #define REQ_GetMaxLUN 0xFE\r
- \r
- /** Magic signature for a Command Block Wrapper used in the Mass Storage Bulk-Only transport protocol. */\r
- #define MS_CBW_SIGNATURE 0x43425355UL\r
-\r
- /** Magic signature for a Command Status Wrapper used in the Mass Storage Bulk-Only transport protocol. */\r
- #define MS_CSW_SIGNATURE 0x53425355UL\r
- \r
- /** Mask for a Command Block Wrapper's flags attribute to specify a command with data sent from host-to-device. */\r
- #define MS_COMMAND_DIR_DATA_OUT (0 << 7)\r
-\r
- /** Mask for a Command Block Wrapper's flags attribute to specify a command with data sent from device-to-host. */\r
- #define MS_COMMAND_DIR_DATA_IN (1 << 7)\r
-\r
- /* Type defines: */\r
- /** Type define for a Command Block Wrapper, used in the Mass Storage Bulk-Only Transport protocol. */\r
- typedef struct\r
- {\r
- uint32_t Signature; /**< Command block signature, must be CBW_SIGNATURE to indicate a valid Command Block */\r
- uint32_t Tag; /**< Unique command ID value, to associate a command block wrapper with its command status wrapper */\r
- uint32_t DataTransferLength; /** Length of the optional data portion of the issued command, in bytes */\r
- uint8_t Flags; /**< Command block flags, indicating command data direction */\r
- uint8_t LUN; /**< Logical Unit number this command is issued to */\r
- uint8_t SCSICommandLength; /**< Length of the issued SCSI command within the SCSI command data array */\r
- uint8_t SCSICommandData[16]; /**< Issued SCSI command in the Command Block */\r
- } CommandBlockWrapper_t;\r
+ /* Public Interface - May be used in end-application: */\r
+ /* Type Defines: */ \r
+ /** Class state structure. An instance of this structure should be made for each Mass Storage interface\r
+ * within the user application, and passed to each of the Mass Storage class driver functions as the\r
+ * MSInterfaceInfo parameter. This stores each Mass Storage interface's configuration and state information.\r
+ */\r
+ typedef struct\r
+ {\r
+ const struct\r
+ {\r
+ uint8_t InterfaceNumber; /**< Interface number of the Mass Storage interface within the device */\r
+\r
+ uint8_t DataINEndpointNumber; /**< Endpoint number of the Mass Storage interface's IN data endpoint */\r
+ uint16_t DataINEndpointSize; /**< Size in bytes of the Mass Storage interface's IN data endpoint */\r
+ bool DataINEndpointDoubleBank; /** Indicates if the Mass Storage interface's IN data endpoint should use double banking */\r
+\r
+ uint8_t DataOUTEndpointNumber; /**< Endpoint number of the Mass Storage interface's OUT data endpoint */\r
+ uint16_t DataOUTEndpointSize; /**< Size in bytes of the Mass Storage interface's OUT data endpoint */\r
+ bool DataOUTEndpointDoubleBank; /** Indicates if the Mass Storage interface's OUT data endpoint should use double banking */\r
+\r
+ uint8_t TotalLUNs; /**< Total number of logical drives in the Mass Storage interface */\r
+ } Config; /**< Config data for the USB class interface within the device. All elements in this section\r
+ * <b>must</b> be set or the interface will fail to enumerate and operate correctly.\r
+ */\r
+ struct\r
+ {\r
+ MS_CommandBlockWrapper_t CommandBlock; /**< Mass Storage class command block structure, stores the received SCSI\r
+ * command from the host which is to be processed\r
+ */\r
+ MS_CommandStatusWrapper_t CommandStatus; /**< Mass Storage class command status structure, set elements to indicate\r
+ * the issued command's success or failure to the host\r
+ */\r
+ volatile bool IsMassStoreReset; /**< Flag indicating that the host has requested that the Mass Storage interface be reset\r
+ * and that all current Mass Storage operations should immediately abort\r
+ */\r
+ } State; /**< State data for the USB class interface within the device. All elements in this section\r
+ * are reset to their defaults when the interface is enumerated.\r
+ */\r
+ } USB_ClassInfo_MS_Device_t;\r
+\r
+ /* Function Prototypes: */\r
+ /** Configures the endpoints of a given Mass Storage interface, ready for use. This should be linked to the library\r
+ * \ref EVENT_USB_Device_ConfigurationChanged() event so that the endpoints are configured when the configuration\r
+ * containing the given Mass Storage interface is selected.\r
+ *\r
+ * \param[in,out] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state\r
+ *\r
+ * \return Boolean true if the endpoints were successfully configured, false otherwise\r
+ */\r
+ bool MS_Device_ConfigureEndpoints(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** Processes incoming control requests from the host, that are directed to the given Mass Storage class interface. This should be\r
+ * linked to the library \ref EVENT_USB_Device_UnhandledControlRequest() event.\r
+ *\r
+ * \param[in,out] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state\r
+ */ \r
+ void MS_Device_ProcessControlRequest(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+\r
+ /** General management task for a given Mass Storage class interface, required for the correct operation of the interface. This should\r
+ * be called frequently in the main program loop, before the master USB management task \ref USB_USBTask().\r
+ *\r
+ * \param[in,out] MSInterfaceInfo Pointer to a structure containing a Mass Storage configuration and state\r
+ */\r
+ void MS_Device_USBTask(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
+ \r
+ /** Mass Storage class driver callback for the user processing of a received SCSI command. This callback will fire each time the\r
+ * host sends a SCSI command which requires processing by the user application. Inside this callback the user is responsible\r
+ * for the processing of the received SCSI command from the host. The SCSI command is available in the CommandBlock structure\r
+ * inside the Mass Storage class state structure passed as a parameter to the callback function.\r
+ *\r
+ * \param[in,out] MSInterfaceInfo Pointer to a structure containing a Mass Storage Class configuration and state\r
+ *\r
+ * \return Boolean true if the SCSI command was successfully processed, false otherwise\r
+ */\r
+ bool CALLBACK_MS_Device_SCSICommandReceived(USB_ClassInfo_MS_Device_t* const MSInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);\r
projects / pub / USBasp.git / blobdiff