USBOutTransferResult - Web APIs 编辑

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

Constructor

USBOutTransferResult.USBOutTransferResult()

Creates a new USBOutTransferResult object with the provided status and bytesWritten fields.

Properties

USBOutTransferResult.bytesWrittenRead only

Returns the number of bytes from the transfer request that were sent to the device.

USBOutTransferResult.statusRead 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 a bulk or interrupt endpoint must be cleared by calling clearHalt() before transferOut() can be called again.

Specifications

Browser compatibility

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