USBDevice.transferIn()
Experimental: 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
USBInTransferResultin the resolved Promise.
Return value
A promise that resolves with a USBTransferInResult.
Specifications
| Specification |
|---|
| WebUSB API # ref-for-dom-usbdevice-transferin① |
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
transferIn |
61 |
79 |
No |
No |
48 |
No |
No |
61 |
No |
45 |
No |
8.0 |
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https://developer.mozilla.org/en-US/docs/Web/API/USBDevice/transferIn