USBDevice: transferIn() method
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 transferIn() method of the USBDevice
interface returns a promise that resolves with a
USBInTransferResult when bulk or interrupt data is received from the USB
device.
Syntax
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 USBInTransferResult.
Specifications
| Specification |
|---|
| WebUSB API # dom-usbdevice-transferin |
Browser compatibility
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