Enumerations

The following enumerations are available globally.

  • An error that can be thrown by the SwiftVISA framework.

    • systemError: Unknown system error (miscellaneous error).
    • invalidSession: The given session or object reference is invalid.
    • resourceLocked: Specified type of lock cannot be obtained or specified operation cannot be performed, because the resource is locked.
    • invalidExpressionForSearch: Invalid expression specified for search.
    • resourceNotFound: Insufficient location information or the device or resource is not present in the system.
    • invalidResourceName: Invalid resource reference specified. Parsing error.
    • invalidAccessMode: Invalid access mode.
    • timeout: Timeout expired before operation completed.
    • failedToClose: Unable to deallocate the previously allocated data structures corresponding to this session or object reference.
    • invalidDegree: Specified degree is invalid.
    • invalidJobIdentifier: Specified job identifier is invalid.
    • unsupportedAttribute: The specified attribute is not defined or supported by the referenced session, event, or find list.
    • unsupportedAttributeState: The specified state of the attribute is not valid, or is not supported as defined by the session, event, or find list.
    • readOnlyAttribute: The specified attribute is Read Only.
    • invalidLockType: The specified type of lock is not supported by this resource.
    • invalidAccessKey: The access key to the resource associated with this session is invalid.
    • invalidEvent: Specified event type is not supported by the resource.
    • invalidMechanism: Invalid mechanism specified.
    • handlerNotInstalled: A handler is not currently installed for the specified event.
    • invalidHandlerReference: The given handler reference is invalid.
    • invalidContext: Specified event context is invalid.
    • queueOverflow: The event queue for the specified type has overflowed (usually due to previous events not having been closed).
    • eventNotEnabled: The session must be enabled for events of the specified type in order to receive them.
    • operationAborted: The operation was aborted.
    • rawWriteProtocolViolation: Violation of raw write protocol occurred during transfer.
    • rawReadProtocolViolation: Violation of raw read protocol occurred during transfer.
    • outputProtocolViolation: Device reported an output protocol error during transfer.
    • inputProtocolViolation: Device reported an input protocol error during transfer.
    • busError: Bus error occurred during transfer.
    • operationAlreadyInProgress: Unable to queue the asynchronous operation because there is already an operation in progress.
    • invalidSetup: Unable to start operation because setup is invalid (due to attributes being set to an inconsistent state).
    • queueError: Unable to queue asynchronous operation.
    • insufficientSystemResources: Insufficient system resources to perform necessary memory allocation.
    • invalidBufferMask: Invalid buffer mask specified.
    • ioError: Could not perform operation because of I/O error.
    • invalidFormat: A format specifier in the format string is invalid.
    • unsupportedFormat: A format specifier in the format string is not supported.
    • triggerLineInUse: The specified trigger line is currently in use.
    • unsupportedMode: The specified mode is not supported by this VISA implementation.
    • serviceRequestNotReceived: Service request has not been received for the session.
    • invalidAddressSpace: Invalid address space specified.
    • invalidOffset: Invalid offset specified.
    • invalidWidth: Invalid source or destination width specified.
    • unsupportedOffset: Specified offset is not accessible from this hardware.
    • nonequalSourceAndDestinationWidths: Cannot support source and destination widths that are different.
    • sessionNotMapped: The specified session is not currently mapped.
    • responseStillPending: A previous response is still pending, causing a multiple query error.
    • noListeners: No Listeners condition is detected (both NRFD and NDAC are deasserted).
    • notControllerInCharge: The interface associated with this session is not currently the controller in charge.
    • notSystemController: The interface associated with this session is not the system controller.
    • unsupportedOperation: The given session or object reference does not support this operation.
    • interuptStillPending: An interrupt is still pending from a previous call.
    • parityError: A parity error occurred during transfer.
    • framingError: A framing error occurred during transfer.
    • overrunError: An overrun error occurred during transfer. A character was not read from the hardware before the next character arrived.
    • triggerNotMapped: The path from trigSrc to trigDest is not currently mapped.
    • unsupportedAlignOffset: The specified offset is not properly aligned for the access width of the operation.
    • invalidUserBuffer: A specified user buffer is not valid or cannot be accessed for the required size.
    • resourceBusy: The resource is valid, but VISA cannot currently access it.
    • unsupportedWidth: Specified width is not supported by this hardware.
    • invalidParameter: The value of some parameter—which parameter is not known—is invalid.
    • invalidProtocol: The protocol specified is invalid.
    • invalidWindowSize: Invalid size of window specified.
    • windowMapped: The specified session currently contains a mapped window.
    • unimplementedOperation: The given operation is not implemented.
    • invalidLength: Invalid length specified.
    • invalidMode: The specified mode is invalid.
    • sessionNotLocked: The current session did not have any lock on the resource.
    • memoryNotShared: The device does not export any memory.
    • libraryNotFound: A code library required by VISA could not be located or loaded.
    • unsupportedInterrupt: The interface cannot generate an interrupt on the requested level or with the requested statusID value.
    • invalidLineParameter: The value specified by the line parameter is invalid.
    • fileAccessError: An error occurred while trying to open the specified file. Possible reasons include an invalid path or lack of access rights.
    • fileIOError: An error occurred while performing I/O on the specified file.
    • unsupportedLine: One of the specified lines (trigSrc or trigDest) is not supported by this VISA implementation, or the combination of lines is not a valid mapping.
    • unsupportedMechanism: The specified mechanism is not supported by the given event type.
    • interfaceNumberNotConfigured: The interface type is valid but the specified interface number is not configured.
    • connectionLost: The connection for the given session has been lost.
    • machineNotAvailable: The remote machine does not exist or is not accepting any connections.
    • machineAccessDenied: Access to the remote machine is denied.
    • unknownCVISAError: An unknown CVISA error status was returned from a call to CVISA. The status of this code is stored in status.
    • couldNotDecode: Could not decode the message into the specified type.
    • invalidRequestKey: The provided request key was invalid.
    • invalidInstrumentIdentifier: The provided instrument identifier did not adhere to the NI-VISA standard.
    • instrumentManagerCouldNotBeCreated: The InstrumentManager.default was not able to be created due to an unknown internal NI-VISA error.
    • invalidInstrument: The instrument class is not valid.
    See more

    Declaration

    Swift

    public enum VISAError : Error

  • The lock state of an instrument.

    • locked: The instrument is locked with the given lock type.
    • unlocked: The instrument is unlocked.
    See more

    Declaration

    Swift

    public enum LockState