UsbDeviceConnection.ControlTransfer Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Overloads
| ControlTransfer(UsbAddressing, Int32, Int32, Int32, Byte[], Int32, Int32) |
Performs a control transaction on endpoint zero for this device. |
| ControlTransfer(UsbAddressing, Int32, Int32, Int32, Byte[], Int32, Int32, Int32) |
Performs a control transaction on endpoint zero for this device. |
ControlTransfer(UsbAddressing, Int32, Int32, Int32, Byte[], Int32, Int32)
Performs a control transaction on endpoint zero for this device.
[Android.Runtime.Register("controlTransfer", "(IIII[BII)I", "GetControlTransfer_IIIIarrayBIIHandler")]
public virtual int ControlTransfer (Android.Hardware.Usb.UsbAddressing requestType, int request, int value, int index, byte[]? buffer, int length, int timeout);[<Android.Runtime.Register("controlTransfer", "(IIII[BII)I", "GetControlTransfer_IIIIarrayBIIHandler")>]
abstract member ControlTransfer : Android.Hardware.Usb.UsbAddressing * int * int * int * byte[] * int * int -> int
override this.ControlTransfer : Android.Hardware.Usb.UsbAddressing * int * int * int * byte[] * int * int -> intParameters
- requestType
- UsbAddressing
request type for this transaction
- request
- Int32
request ID for this transaction
- value
- Int32
value field for this transaction
- index
- Int32
index field for this transaction
- buffer
- Byte[]
buffer for data portion of transaction, or null if no data needs to be sent or received
- length
- Int32
the length of the data to send or receive
- timeout
- Int32
in milliseconds
Returns
length of data transferred (or zero) for success, or negative value for failure
- Attributes
Remarks
Performs a control transaction on endpoint zero for this device. The direction of the transfer is determined by the request type. If requestType & UsbConstants#USB_ENDPOINT_DIR_MASK is UsbConstants#USB_DIR_OUT, then the transfer is a write, and if it is UsbConstants#USB_DIR_IN, then the transfer is a read.
This method transfers data starting from index 0 in the buffer. To specify a different offset, use #controlTransfer(int, int, int, int, byte[], int, int, int).
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
Applies to
ControlTransfer(UsbAddressing, Int32, Int32, Int32, Byte[], Int32, Int32, Int32)
Performs a control transaction on endpoint zero for this device.
[Android.Runtime.Register("controlTransfer", "(IIII[BIII)I", "GetControlTransfer_IIIIarrayBIIIHandler")]
public virtual int ControlTransfer (Android.Hardware.Usb.UsbAddressing requestType, int request, int value, int index, byte[]? buffer, int offset, int length, int timeout);[<Android.Runtime.Register("controlTransfer", "(IIII[BIII)I", "GetControlTransfer_IIIIarrayBIIIHandler")>]
abstract member ControlTransfer : Android.Hardware.Usb.UsbAddressing * int * int * int * byte[] * int * int * int -> int
override this.ControlTransfer : Android.Hardware.Usb.UsbAddressing * int * int * int * byte[] * int * int * int -> intParameters
- requestType
- UsbAddressing
request type for this transaction
- request
- Int32
request ID for this transaction
- value
- Int32
value field for this transaction
- index
- Int32
index field for this transaction
- buffer
- Byte[]
buffer for data portion of transaction, or null if no data needs to be sent or received
- offset
- Int32
the index of the first byte in the buffer to send or receive
- length
- Int32
the length of the data to send or receive
- timeout
- Int32
in milliseconds
Returns
length of data transferred (or zero) for success, or negative value for failure
- Attributes
Remarks
Performs a control transaction on endpoint zero for this device. The direction of the transfer is determined by the request type. If requestType & UsbConstants#USB_ENDPOINT_DIR_MASK is UsbConstants#USB_DIR_OUT, then the transfer is a write, and if it is UsbConstants#USB_DIR_IN, then the transfer is a read.
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.