| Data Acquisition Toolbox | Search Help Desk |
Data Acquisition Toolbox Functions
This section describes the Data Acquisition Toolbox M-file functions that you can use directly. These functions and the device objects they are associated with are organized into the six groups shown below.| Creating Device Objects | AI |
AO |
DIO |
|
| analoginput |
Create an analog input object. |
3 |
||
| analogoutput |
Create an analog output object. |
3 |
||
| digitalio |
Create a digital I/O object. |
3 |
||
| Configuring Device Objects | AI |
AO |
DIO |
|
| addchannel |
Add hardware channels to an analog input or analog output object. | 3 |
3 |
|
| addline |
Add hardware lines to a digital I/O object. |
3 |
||
| get |
Return property values. |
3 |
3 |
3 |
| set |
Configure or display property values. | 3 |
3 |
3 |
| setverify |
Set and return the specified property value. | 3 |
3 |
3 |
| Executing the Object | AI |
AO |
DIO |
|
| start |
Start the execution of a device object. | 3 |
3 |
3 |
| stop |
Stop the execution of a device object. | 3 |
3 |
3 |
| trigger |
Manually execute a trigger. | 3 |
3 |
3 |
| Working with Data | AI |
AO |
DIO |
|
| flushdata |
Remove data from the data acquisition engine. |
3 |
3 |
|
| getdata |
Return data, time, and event information to the MATLAB workspace for an analog input. |
3 |
3 |
|
| getsample |
Return one sample for each analog input channel group member or digital I/O line group member. |
3 |
3 |
|
| peekdata |
Immediately return data to the MATLAB workspace for an analog input object. |
3 |
||
| putdata |
Queues data in the engine for eventual output to the D/A hardware. |
3 |
3 |
|
| putsample |
Send one sample for each analog output channel group member or digital I/O line group member. |
3 |
3 |
|
| Getting Information and Help | AI |
AO |
DIO |
|
| daqhelp |
Display help for device objects, constructors, functions, and properties. | 3 |
3 |
3 |
| daqhwinfo |
Display data acquisition hardware information. | 3 |
3 |
3 |
| nidaq |
Display information about National Instruments adaptor | 3 |
3 |
3 |
| propinfo |
Return property information for device objects, channels, or lines. |
3 |
3 |
3 |
| winsound |
Display information for sound card adaptor | 3 |
3 |
3 |
| General Purpose | AI |
AO |
DIO |
|
| clear |
Clear device objects from the MATLAB workspace. | 3 |
3 |
3 |
| daqaction |
Display event information for specified event | 3 |
3 |
|
| daqfind |
Return device objects, channels, or lines from the data acquisition engine to the workspace. | 3 |
3 |
3 |
| daqread |
Read a Data Acquisition Toolbox (.daq) file.
|
3 |
||
| daqmem |
Allocate or display memory for one or more device objects. | 3 |
3 |
3 |
| daqregister |
Register or unregister a Data Acquisition Toolbox adaptor. | 3 |
3 |
3 |
| daqreset |
Remove data acquisition objects and .dll files from memory.
|
3 |
3 |
3 |
| delete |
Delete device objects, channels, or lines. | 3 |
3 |
3 |
| disp |
Display device object, channel, and line information. |
3 |
3 |
3 |
| ischannel |
Check for channels. |
3 |
3 |
|
| isline |
Check for lines |
3 |
||
| isvalid |
Check for valid device objects, channels, or lines. |
3 |
3 |
3 |
| length |
Determine length of data acquisition objects. |
3 |
3 |
3 |
| load |
Load device objects into the MATLAB workspace |
3 |
3 |
3 |
| makenames |
Generate a list of channel or line names. |
3 |
3 |
3 |
| obj2code |
Convert device objects, channels, or lines to MATLAB code and save to disk. |
3 |
3 |
3 |
| save |
Save device objects to a MAT-file. |
3 |
3 |
3 |
| size |
Determine size of data acquisition objects. |
3 |
3 |
3 |