Device Class Instance structure (USBH_DCI)

Device Class Instance (USBH_DCI) structure represents an instance of device that USB Host Core has mounted.

typedef struct {                        /* Device Class Instance structure    */
  U8           Protocol;                /* Class Protocol                     */
  U8           Port;                    /* Port Index                         */
  U8           Address;                 /* Device Address                     */
  U8           Speed;                   /* Device Speed                       */
  struct {
    U8         Config            : 1;   /* Device Configured Status           */
    U8         Init              : 1;   /* Device Initialized Status          */
  };
  U32          LastError;               /* Last Error                         */
  union {
    USBH_MSC  *ptrMSC;                  /* Pointer to MSC Device structure    */
    USBH_HID  *ptrHID;                  /* Pointer to HID Device structure    */
    void      *ptrCLS;                  /* Pointer to USB Device Class struct */
  };
} USBH_DCI;

Explanation of USBH_DCI structure elements:

• Protocol represents the protocol that device is using.
• Port represents the port index to which device is connected.
• Address represents the address that device is using.
• Speed represents the speed that device is using.
• Config represents the device configuration status (0 = unconfigured, 1 = configured).
• Init represents the device initialization status (0 = uninitialized, 1 = initialized).
• LastError represents the last device error.
• ptrCLS represents the pointer to specific parameters of device of specified device class.