4.6.10.3 Enumerations

enum RETURN_CODE_enum { UNSUPPORTED = 2, UNINITIALIZED = 1, SUCCESS = 0, ENDPOINT_SIZE_ERROR = -1, ENDPOINT_ADDRESS_ERROR = -2, ENDPOINT_DIRECTION_ERROR = -3, ENDPOINT_TYPE_ERROR = -4, ENDPOINT_AZLP_ERROR = -5, ENDPOINT_ALIGN_ERROR = -6, PIPE_BUSY_ERROR = -10, PIPE_TRANSFER_ERROR = -11, CONTROL_SIZE_ERROR = -20, CONTROL_TRANSACTION_STATUS_ERROR = -21, CONTROL_SETUP_CALLBACK_ERROR = -22, CONTROL_SETUP_DIRECTION_ERROR = -23, DESCRIPTOR_POINTER_ERROR = -30, DESCRIPTOR_CONFIGURATIONS_ERROR = -31, DESCRIPTOR_INTERFACE_ERROR = -32, DESCRIPTOR_ENDPOINT_ERROR = -33, DESCRIPTOR_REQUEST_ERROR = -34, DESCRIPTOR_SEARCH_ERROR = -35, INTERFACE_SET_ERROR = -40, INTERFACE_GET_ERROR = -41, USB_CONNECTION_ERROR = -50, USB_CLASS_ERROR = -60 }

Describes the different function return reserved codes used by the USB stack.