1# JS API Changes of the USB Subsystem 2 3The table below lists the APIs changes of the USB subsystem in OpenHarmony 3.1 Release over OpenHarmony 3.0 LTS. 4 5## API Changes 6 7| Module| Class| Method/Attribute/Enumeration/Constant| Change Type| 8|---|---|---|---| 9| ohos.usb | USBRequestDirection | USB_REQUEST_DIR_FROM_DEVICE = 0x80 | Added| 10| ohos.usb | USBRequestDirection | USB_REQUEST_DIR_TO_DEVICE = 0 | Added| 11| ohos.usb | USBControlRequestType | USB_REQUEST_TYPE_VENDOR | Added| 12| ohos.usb | USBControlRequestType | USB_REQUEST_TYPE_CLASS | Added| 13| ohos.usb | USBControlRequestType | USB_REQUEST_TYPE_STANDARD = 0 | Added| 14| ohos.usb | USBRequestTargetType | USB_REQUEST_TARGET_OTHER | Added| 15| ohos.usb | USBRequestTargetType | USB_REQUEST_TARGET_ENDPOINT | Added| 16| ohos.usb | USBRequestTargetType | USB_REQUEST_TARGET_INTERFACE | Added| 17| ohos.usb | USBRequestTargetType | USB_REQUEST_TARGET_DEVICE = 0 | Added| 18| ohos.usb | USBControlParams | data: Uint8Array; | Added| 19| ohos.usb | USBControlParams | index: number; | Added| 20| ohos.usb | USBControlParams | value: number; | Added| 21| ohos.usb | USBControlParams | reqType: USBControlRequestType; | Added| 22| ohos.usb | USBControlParams | target: USBRequestTargetType; | Added| 23| ohos.usb | USBControlParams | request: number; | Added| 24| ohos.usb | USBDevicePipe | devAddress: number; | Added| 25| ohos.usb | USBDevicePipe | busNum: number; | Added| 26| ohos.usb | USBDevice | configs: Array\<USBConfig>; | Added| 27| ohos.usb | USBDevice | protocol: number; | Added| 28| ohos.usb | USBDevice | subClass: number; | Added| 29| ohos.usb | USBDevice | clazz: number; | Added| 30| ohos.usb | USBDevice | productId: number; | Added| 31| ohos.usb | USBDevice | vendorId: number; | Added| 32| ohos.usb | USBDevice | version: string; | Added| 33| ohos.usb | USBDevice | productName: string; | Added| 34| ohos.usb | USBDevice | manufacturerName: string; | Added| 35| ohos.usb | USBDevice | name: string; | Added| 36| ohos.usb | USBDevice | serial: string; | Added| 37| ohos.usb | USBDevice | devAddress: number; | Added| 38| ohos.usb | USBDevice | busNum: number; | Added| 39| ohos.usb | USBConfig | interfaces: Array\<USBInterface>; | Added| 40| ohos.usb | USBConfig | isSelfPowered: boolean; | Added| 41| ohos.usb | USBConfig | isRemoteWakeup: boolean; | Added| 42| ohos.usb | USBConfig | name: string; | Added| 43| ohos.usb | USBConfig | maxPower: number; | Added| 44| ohos.usb | USBConfig | attributes: number; | Added| 45| ohos.usb | USBConfig | id: number; | Added| 46| ohos.usb | USBInterface | endpoints: Array\<USBEndpoint>; | Added| 47| ohos.usb | USBInterface | name: string; | Added| 48| ohos.usb | USBInterface | alternateSetting: number; | Added| 49| ohos.usb | USBInterface | subClass: number; | Added| 50| ohos.usb | USBInterface | clazz: number; | Added| 51| ohos.usb | USBInterface | protocol: number; | Added| 52| ohos.usb | USBInterface | id: number; | Added| 53| ohos.usb | USBEndpoint | interfaceId: number; | Added| 54| ohos.usb | USBEndpoint | type: number; | Added| 55| ohos.usb | USBEndpoint | number: number; | Added| 56| ohos.usb | USBEndpoint | direction: USBRequestDirection; | Added| 57| ohos.usb | USBEndpoint | maxPacketSize: number; | Added| 58| ohos.usb | USBEndpoint | interval: number; | Added| 59| ohos.usb | USBEndpoint | attributes: number; | Added| 60| ohos.usb | USBEndpoint | address: number; | Added| 61| ohos.usb | usb | closePipe(pipe: USBDevicePipe): number; | Added| 62| ohos.usb | usb | bulkTransfer(pipe: USBDevicePipe, endpoint: USBEndpoint, buffer: Uint8Array,timeout?: number): Promise\<number>; | Added| 63| ohos.usb | usb | controlTransfer(pipe: USBDevicePipe, contrlparam: USBControlParams, timeout?: number): Promise\<number>; | Added| 64| ohos.usb | usb | getFileDescriptor(pipe: USBDevicePipe): number; | Added| 65| ohos.usb | usb | getRawDescriptor(pipe: USBDevicePipe): Uint8Array; | Added| 66| ohos.usb | usb | setInterface(pipe: USBDevicePipe, iface: USBInterface): number; | Added| 67| ohos.usb | usb | setConfiguration(pipe: USBDevicePipe, config: USBConfig): number; | Added| 68| ohos.usb | usb | releaseInterface(pipe: USBDevicePipe, iface: USBInterface): number; | Added| 69| ohos.usb | usb | claimInterface(pipe: USBDevicePipe, iface: USBInterface, force?: boolean): number; | Added| 70| ohos.usb | usb | requestRight(deviceName: string): Promise\<boolean>; | Added| 71| ohos.usb | usb | hasRight(deviceName: string): boolean; | Added| 72| ohos.usb | usb | connectDevice(device: USBDevice): Readonly\<USBDevicePipe>; | Added| 73| ohos.usb | usb | getDevices(): Array\<Readonly\<USBDevice>>; | Added| 74