| Data Acquisition Toolbox | |
Generating Timer Events
The fact that analog input and analog output objects make use of data stored in the engine and clocked I/O leads to the concept of a "running" device object and the generation of events.
However, because the Data Acquisition Toolbox does not support buffered digital I/O (DIO) operations, DIO objects do not store data in the engine. Additionally, reading and writing line values are not clocked at a specific rate in the way that data is sampled by an analog input or analog output subsystem. Instead, values are either written directly to digital lines with putvalue, or read directly from digital lines with getvalue.
Therefore, the concept of a running DIO object does not make sense in the same way that it does for analog I/O. However, you can "run" a DIO object to perform one task: generate timer events. You can use timer events to update and display the state of the DIO object. Refer to the diopanel demo for an example.
| | Example: Writing and Reading Digital Values | Timer Events | |