Data Acquisition Toolbox

daqaction

An action function that displays event information for the specified event

Syntax

daqaction(obj,event)

Arguments

obj	A device object.
event	A variable that captures the event information contained by the EventLog property.

Description

daqaction(obj,event) is an example action function that displays information to the MATLAB command window. For all events, the information includes the event type and the name of the device object that caused the event to occur. For events that record the absolute time in EventLog, the event time is also displayed. For run-time error events, the error message is also displayed.

Remarks

You specify daqaction as the action function to be executed for any event by specifying it as the value for the associated action property. For analog input objects, daqaction is the default value for the DataMissedAction and RuntimeErrorAction properties. For analog output objects, daqaction is the default value for the RuntimeErrorAction property.

You can use the showdaqevents function to easily display event information captured by the EventLog property.

Example

Create the analog input object ai and call the action function daqaction when a trigger event occurs.

ai = analoginput('winsound');
addchannel(ai,1);
set(ai,'TriggerRepeat',3)
set(ai,'TriggerAction','daqaction')
start(ai)

See Also

Functions

showdaqevents

Properties

DataMissedAction, EventLog, RuntimeErrorAction

clear

daqfind