Error constants

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Error constants represent various USB Host errors specified by a numerical value.

/* Error values that USB Host functions can return                            */
typedef enum {
  ERROR_SUCCESS = 0,                    /* No error                           */
                                        /* Errors                             */
  ERROR_USBH_HCI,                       /* Host Ctrl Instance does not exist  */
  ERROR_USBH_HCD,                       /* Host Ctrl Driver does not exist    */
  ERROR_USBH_DCI,                       /* Device Class Instance does not exst*/
  ERROR_USBH_DCD,                       /* Device Class Driver does not exist */

  ERROR_USBH_MEM_INIT,                  /* Memory initialization failed       */
  ERROR_USBH_MEM_ALLOC,                 /* Memory allocation failed           */
  ERROR_USBH_MEM_DEALLOC,               /* Memory deallocation failed         */

  ERROR_USBH_PINS_CONFIG,               /* Pins not conf/unconfigured         */
  ERROR_USBH_INIT,                      /* Controller not init/uninitialized  */
  ERROR_USBH_PORT_POWER,                /* Port power driving failed          */
  ERROR_USBH_PORT_RESET,                /* Port reset failed                  */

  ERROR_USBH_EP,                        /* Endpoint does not exist            */
  ERROR_USBH_EP_ADD,                    /* Endpoint was not added             */
  ERROR_USBH_EP_CONFIG,                 /* Endpoint was not configured        */
  ERROR_USBH_EP_REMOVE,                 /* Endpoint was not removed           */

  ERROR_USBH_URB,                       /* URB does not exist                 */
  ERROR_USBH_URB_SUBMIT,                /* URB was not submitted              */
  ERROR_USBH_URB_CANCEL,                /* URB was not cancelled              */
  ERROR_USBH_URB_TRANSFER,              /* URB transfered with error          */
  ERROR_USBH_URB_TOUT,                  /* URB has timed-out                  */

  ERROR_USBH_ENUMERATE,                 /* Device enumeration failed          */
  ERROR_USBH_UNINIT_DEVS,               /* Device uninitialization failed     */

  ERROR_USBH_MSC,                       /* MSC Device Instance does not exist */
  ERROR_USBH_MSC_SIG,                   /* MSC Class CSW Signature not correct*/
  ERROR_USBH_MSC_TAG,                   /* MSC Class different tags           */
  ERROR_USBH_MSC_RESID,                 /* MSC Class data residue not 0       */

  ERROR_USBH_HID,                       /* HID Device Instance does not exist */

  ERROR_USBH_CLS,                       /* USB Device Class does not exist    */

  ERROR_USBH_CLS_UNKNOWN,               /* Unknown Class type                 */
} USBH_ERROR;