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 received from the USB device.
Syntax
var promise = USBDevice.transferIn(endpointNumber, length)
Parameters
- endpointNumber
- The number of a device-specific endpoint (buffer).
- length
- The maximum number of bytes 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 compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
transferIn | Chrome Full support 61 | Edge Full support 79 | Firefox No support No | IE No support No | Opera Full support 48 | Safari No support No | WebView Android No support No | Chrome Android Full support 61 | Firefox Android No support No | Opera Android Full support 45 | Safari iOS No support No | Samsung Internet Android Full support 8.0 |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.
- Experimental. Expect behavior to change in the future.