USBDevice - Web APIs 编辑

Experimental

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

The USBDevice interface of the WebUSB API provides access to metadata about a paired USB device and methods for controlling it.

Properties

USBDevice.configuration Read only: A USBConfiguration object for the currently selected interface for a paired USB device.
USBDevice.configurations Read only: An array of device-specific interfaces for controlling a paired USB device.
USBDevice.deviceClass Read only: One of three properties that identify USB devices for the purpose of loading a USB driver that will work with that device. The other two properties are USBDevice.deviceSubclass and USBDevice.deviceProtocol.
USBDevice.deviceProtocol Read only: One of three properties that identify USB devices for the purpose of loading a USB driver that will work with that device. The other two properties are USBDevice.deviceClass and USBDevice.deviceSubclass.
USBDevice.deviceSubclass Read only: One of three properties that identify USB devices for the purpose of loading a USB driver that will work with that device. The other two properties are USBDevice.deviceClass and USBDevice.deviceProtocol.
USBDevice.deviceVersionMajor Read only: The major version number of the device in a semantic versioning scheme.
USBDevice.deviceVersionMinor Read only: The minor version number of the device in a semantic versioning scheme.
USBDevice.deviceVersionSubminor Read only: The patch version number of the device in a semantic versioning scheme.
USBDevice.manufacturerName Read only: The of the organization that manufactured the USB device.
USBDevice.opened Read only: Indicates whether a session has been started with a paired USB device.
USBDevice.productId Read only: The manufacturer-defined code that identifies a USB device.
USBDevice.productName Read only: The manufacturer-defined name that identifies a USB device.
USBDevice.serialNumber Read only: The manufacturer-defined serial number for the specific USB device.
USBDevice.usbVersionMajor Read only: One of three properties that declare the USB protocol version supported by the device. The other two properties are USBDevice.usbVersionMinor and USBDevice.usbVersionSubminor.
USBDevice.usbVersionMinor Read only: One of three properties that declare the USB protocol version supported by the device. The other two properties are USBDevice.usbVersionMajor and USBDevice.usbVersionSubminor.
USBDevice.usbVersionSubminor Read only: One of three properties that declare the USB protocol version supported by the device. The other two properties are USBDevice.usbVersionMajor and USBDevice.usbVersionMinor.
USBDevice.vendorId Read only: The official usg.org-assigned vendor ID.

Methods

USBDevice.claimInterface(): Returns a Promise that resolves when the requested interface is claimed for exclusive access.
USBDevice.clearHalt(): Returns a Promise that resolves when a halt condition is cleared.
USBDevice.controlTransferIn(): Returns a Promise that resolves with a USBTransferInResult when a command or status operation has been transmitted to the USB device.
USBDevice.controlTransferOut(): Returns a Promise that resolves with a USBTransferOutResult when a command or status operation has been transmitted from the USB device.
USBDevice.close(): Returns a Promise that resolves when all open interfaces are released and the device session has ended.
USBDevice.isochronousTransferIn(): Returns a Promise that resolves with a USBIsochronousInTransferResult when time sensitive information has been transmitted to the USB device.
USBDevice.isochronousTransferOut(): Returns a Promise that resolves with a USBIsochronousOutTransferResult when time sensitive information has been transmitted from the USB device.
USBDevice.open(): Returns a Promise that resolves when a device session has started.
USBDevice.releaseInterface(): Returns a Promise that resolves when a cliamed interface is released from exclusive access.
USBDevice.reset(): Returns a Promise that resolves when the device is reset and all app operations canceled and their promises rejected.
USBDevice.selectAlternateInterface(): Returns a Promise that resolves when the specified alternative endpoint is selected.
USBDevice.selectConfiguration(): Returns a Promise that resolves when the specified configuration is selected.
USBDevice.transferIn(): Returns a Promise that resolves with a USBTransferInResult when bulk or interrupt data is received from the USB device.
USBDevice.transferOut(): Returns a Promise that resolves with a USBTransferOutResult when bulk or interrupt data is sent to the USB device.