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USBDevice.transferIn

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

The transferIn() method of the USBDevice interface returns a promise that resolves with a USBTransferInResult when bulk or interrupt data is transmitted to the USB device.

Syntax

var promise = USBDevice.transferIn(endpointNumber, length)

Parameters

endpointNumber
The number of a device-specific endpoint (buffer).
length
A variable to contain the length of the data that will be read back from the device. The actual data is in the USBInTransferResult in the resolved Promise.

Return value

A promise that resolves with a USBTransferInResult.

Specifications

Specification Status Comment
WebUSB
The definition of 'transferIn()' in that specification.
Draft Initial definition.

Browser compatibilityUpdate compatibility data on GitHub

Desktop
Chrome Edge Firefox Internet Explorer Opera Safari
Basic support 61 No No No 48 No
Mobile
Android webview Chrome for Android Edge Mobile Firefox for Android Opera for Android iOS Safari Samsung Internet
Basic support No 61 No No 48 No No

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/USBDevice/transferIn