External Interfaces/API

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

Refer to Creating and Executing Callback Functions to learn how to create a callback function.

Characteristics

Read only	Never
Data type	Callback function

Values

The default value is an empty string.

See Also

Functions

record

Properties

RecordStatus

OutputBufferSize

Parity