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OutputEmptyFcn - Specify the M-file callback function to execute when the output buffer is empty

Description

You configure OutputEmptyFcn to execute an M-file callback function when an output-empty event occurs. An output-empty event is generated when the last byte is sent from the output buffer to the device.

Note    An output-empty event can be generated only for asynchronous write operations.

If the RecordStatus property value is on, and an output-empty event occurs, the record file records this information:

• The event type as OutputEmpty

• The time the event occurred using the format day-month-year hour:minute:second:millisecond

To learn how to create a callback function, see Creating and Executing Callback Functions.

Characteristics

Read only	Never
Data type	Callback function

Values

The default value is an empty string.

See Also

Functions

record

Properties

RecordStatus

OutputBufferSize

Parity

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