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  3. USBInTransferResult

USBInTransferResult

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Web Workers.

The USBInTransferResult interface of the WebUSB API provides the result from a call to the transferIn() and controlTransferIn() methods of the USBDevice interface. It represents the result from requesting a transfer of data from the USB device to the USB host.

Constructor

USBInTransferResult()

Creates a new USBInTransferResult object with the provided status and data fields.

Instance properties

USBInTransferResult.data Read only

Returns a DataView object containing the data received from the USB device, if any.

USBInTransferResult.status Read only

Returns the status of the transfer request, one of:

  • "ok" - The transfer was successful.
  • "stall" - The device indicated an error by generating a stall condition on the endpoint. A stall on the control endpoint does not need to be cleared. A stall on a bulk or interrupt endpoint must be cleared by calling clearHalt() before transferIn() can be called again.
  • "babble" - The device responded with more data than was expected.

Specifications

Specification
WebUSB API
# usbintransferresult

Browser compatibility

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