Visitar URL original
DeviceObject—Wolfram Documentation

WOLFRAM

Wolfram Language & System Documentation Center

DeviceObject[…]

represents a device that can be accessed in a Wolfram Language session.

Details
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
Applications  
See Also
Tech Notes
Related Guides
History
Cite this Page

DeviceObject

DeviceObject[…]

represents a device that can be accessed in a Wolfram Language session.

Details

  • For a device object dev, dev["prop"] gives the current value of a property prop for the device.
  • For appropriate properties, dev["prop"]=val can be used to reset the value of a property.
  • dev[{"prop1","prop2",…}]={val1,val2,…} sets values of multiple properties.
  • dev[] gives a list of properties that can be used to access capabilities of the device.
  • Typical properties available for devices may include:
  • "Properties"standardized properties for the device
    "NativeProperties"native properties defined by the manufacturer
    "Methods"standardized methods for the device
    "NativeMethods"native methods defined by the manufacturer
    "Rules"properties in the form of a list of rules
    "DeviceName"string giving a display name for the device
    "DeviceImage"typical image of the device
  • Individual properties, as well as native properties, can usually be specified just by giving their names. In the case of a conflict, dev["NativeProperties","prop"] accesses a native property.

Examples

open all close all

Basic Examples  (2)

DeviceOpen returns a DeviceObject expression:

Wolfram Language code: DeviceOpen["RandomSignalDemo"]

Use a DeviceObject to read data from a device:

Wolfram Language code: dev = DeviceOpen["RandomSignalDemo"]
Wolfram Language code: DeviceRead[dev]

Scope  (4)

Use a DeviceObject to access a device for writing and reading:

Wolfram Language code: dev = DeviceOpen["WriteDemo"]
Wolfram Language code: DeviceWrite[dev, DateString[]];
Wolfram Language code: DeviceRead[dev]

Query a device property:

Wolfram Language code: dev = DeviceOpen["RandomSignalDemo"]
Wolfram Language code: dev["Properties"]
Wolfram Language code: val = dev["BufferLength"]

Assign a new value to this property:

Wolfram Language code: dev["BufferLength"] = 3

Verify the new setting and close the device:

Wolfram Language code: dev["BufferLength"]
Wolfram Language code: DeviceClose[dev]

Access a property with a qualifier:

Wolfram Language code: dev = DeviceOpen["RandomSignalDemo"];
Wolfram Language code: dev["Properties", "BufferLength"]

Use a DeviceObject to read time series data from a device and then close the device:

Wolfram Language code: dev = DeviceOpen["RandomSignalDemo"];
Wolfram Language code: DeviceReadTimeSeries[dev, {1, 0.1}]
Wolfram Language code: DeviceClose[dev]

Applications  (2)

Open a connection to the default camera attached to your system and read a frame from it:

Wolfram Language code: dev = DeviceOpen["Camera"]
Wolfram Language code: DeviceRead[dev]

Close the connection:

Wolfram Language code: DeviceClose[dev]

Open a connection to a weather station and use its DeviceObject as an argument to DeviceConfigure and DeviceWrite:

Wolfram Language code: In[1]= dev = DeviceOpen["TinkerForgeWeatherStation"]
Wolfram Language code: In[2]= DeviceConfigure[dev, "LCDBrickletUID" -> "gLp"];
Wolfram Language code: In[3]= DeviceWrite[dev, "This is a string"];
Wolfram Language code: DeviceClose[dev]
Wolfram Research (2014), DeviceObject, Wolfram Language function, https://reference.wolfram.com/language/ref/DeviceObject.html.

Text

Wolfram Research (2014), DeviceObject, Wolfram Language function, https://reference.wolfram.com/language/ref/DeviceObject.html.

CMS

Wolfram Language. 2014. "DeviceObject." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/DeviceObject.html.

APA

Wolfram Language. (2014). DeviceObject. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/DeviceObject.html

BibTeX

@misc{reference.wolfram_2026_deviceobject, author="Wolfram Research", title="{DeviceObject}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/DeviceObject.html}", note=[Accessed: 14-November-2026]}

BibLaTeX

@online{reference.wolfram_2026_deviceobject, organization={Wolfram Research}, title={DeviceObject}, year={2014}, url={https://reference.wolfram.com/language/ref/DeviceObject.html}, note=[Accessed: 14-November-2026]}