UdecxUsbDeviceInitSetSpeed function (udecxusbdevice.h)

Article
02/22/2024

Sets the USB speed of the virtual USB device to create.

Syntax

void UdecxUsbDeviceInitSetSpeed(
  [in, out] PUDECXUSBDEVICE_INIT   UdecxUsbDeviceInit,
  [in]      UDECX_USB_DEVICE_SPEED UsbDeviceSpeed
);

Parameters

[in, out] UdecxUsbDeviceInit

A pointer to a WDF-allocated structure that contains initialization parameters for the virtual USB device. The client driver retrieved this pointer in the previous call to UdecxUsbDeviceInitAllocate.

[in] UsbDeviceSpeed

A UDECX_USB_DEVICE_SPEED-type value that indicates the USB speed to set.

Return value

None

Remarks

After the client driver sets the USB speed of the device, it only operates in that speed. The speed also determines the kind of port to which the device can connect. For example, a USB SuperSpeed device cannot connect to a USB 2.0 port.

Requirements

Requirement	Value
Minimum supported client	Windows 10
Minimum supported server	Windows Server 2016
Target Platform	Windows
Minimum KMDF version	1.15
Header	udecxusbdevice.h (include Udecx.h)
Library	Udecxstub.lib
IRQL	PASSIVE_LEVEL