UsbDeviceControlWrite Method

Initiates a USB control transfer with optional data sent to the USB device.

Namespace: WinUsbNet
Assembly: WinUsbNet (in WinUsbNet.dll) Version: 1.0.0.0 (1.0.0.0)

Syntax

public void ControlWrite(
	byte bmRequestType,
	byte bRequest,
	ushort wValue,
	ushort wIndex,
	byte[] buffer
)

Public Sub ControlWrite ( 
	bmRequestType As Byte,
	bRequest As Byte,
	wValue As UShort,
	wIndex As UShort,
	buffer As Byte()
)

public:
void ControlWrite(
	unsigned char bmRequestType, 
	unsigned char bRequest, 
	unsigned short wValue, 
	unsigned short wIndex, 
	array<unsigned char>^ buffer
)

Parameters

bmRequestType: Type: SystemByte
The USB bmRequestTypefield.
bRequest: Type: SystemByte
The USB bRequestfield.
wValue: Type: SystemUInt16
The USB wValuefield.
wIndex: Type: SystemUInt16
The USB wIndexfield.
buffer: Type: SystemByte
An array of bytes with the data to write to the USB device. May be null.

Exceptions

Exception	Condition
IOException	The UsbDevice is not open, or the transfer did not complete.
Win32Exception	An error was reported by the operating system.

Remarks

The first four arguments of this method correspond precisely with the like-named fields of a USB Setup packet. See the USB specification for the meaning and use of these parameters.

The wLength field of the USB Setup packet is set to the length of buffer, or zero if buffer is null.

Reference

UsbDevice Class

WinUsbNet Namespace

UsbDeviceAddLanguageSpecificTextSet("LSTD198487D_0?cpp=::|nu=.");ControlWrite Method

Parameters

Reference

UsbDeviceControlWrite Method