OutputEmptyFcn
Specify the callback function to execute when the output buffer is empty
Description
You configureOutputEmptyFcn
to execute a 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 theRecordStatus
property value ison
, 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, seeCreate and Execute Callback Functions.
Characteristics
Read only |
Never |
Data type |
Callback function |
Values
The default value is an empty string.
Was this topic helpful?