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DeviceWriteBuffer[device,vals]

fills the buffer on a device with the values vals.

DeviceWriteBuffer[device,paramvals]

fills the buffer associated with the parameter param with the values vals.

DeviceWriteBuffer[device,{param1vals1,param2vals2,…}]

fills the buffers associated with the parami with the corresponding values valsi .

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DeviceWriteBuffer

DeviceWriteBuffer[device,vals]

fills the buffer on a device with the values vals.

DeviceWriteBuffer[device,paramvals]

fills the buffer associated with the parameter param with the values vals.

DeviceWriteBuffer[device,{param1vals1,param2vals2,…}]

fills the buffers associated with the parami with the corresponding values valsi .

Details

  • A device can be specified either by a DeviceObject or by a string representing a device class.
  • DeviceWriteBuffer is a blocking function; when called, it communicates with the device and does not return until it has finished writing data.
  • DeviceWriteBuffer[device,vals] returns vals, even if for some reason the write operation fails.

Examples

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Basic Examples  (2)

Write a list of strings to the buffer of a demo device and retrieve the result:

Wolfram Language code: dev = DeviceOpen["WriteDemo"];
Wolfram Language code: DeviceWriteBuffer[dev, {"This", "is", "a", "list"}];
Wolfram Language code: DeviceReadBuffer[dev]

Close the device:

Wolfram Language code: DeviceClose[dev]

Write a list of values to the buffer associated with a specified parameter:

Wolfram Language code: dev = DeviceOpen["WriteDemo"]
Wolfram Language code: DeviceWriteBuffer[dev, "date" -> DateList[]]

Read the buffer to verify successful writing:

Wolfram Language code: DeviceReadBuffer[dev, All, "date"]

Applications  (2)

Open a serial connection to an Arduino running a custom program called sketch:

Wolfram Language code: dev = DeviceOpen["Serial", "/dev/ttyACM0"]

Write a string to the device buffer to light up an LED connected to the Arduino board:

Wolfram Language code: DeviceWriteBuffer[dev, "LED On"];

Write a sequence of bytes to temporarily put a Sphero robotic ball in the sleep mode:

Wolfram Language code: dev = DeviceOpen["SerialDemo", "*Sphero*"]
Wolfram Language code: str = FromCharacterCode[{255, 255, 0, 34, 5, 6, 0, 5, 0, 0, 0, 205}];
Wolfram Language code: DeviceWriteBuffer[dev, str];
Wolfram Research (2014), DeviceWriteBuffer, Wolfram Language function, https://reference.wolfram.com/language/ref/DeviceWriteBuffer.html.

Text

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

CMS

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

APA

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

BibTeX

@misc{reference.wolfram_2026_devicewritebuffer, author="Wolfram Research", title="{DeviceWriteBuffer}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/DeviceWriteBuffer.html}", note=[Accessed: 12-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_devicewritebuffer, organization={Wolfram Research}, title={DeviceWriteBuffer}, year={2014}, url={https://reference.wolfram.com/language/ref/DeviceWriteBuffer.html}, note=[Accessed: 12-June-2026]}