Configuration Class

Package: GHIElectronics.Endpoint.Devices.UsbHost
Namespace: GHIElectronics.Endpoint.Devices.UsbHost.Descriptors

Configuration descriptor.

class Configuration(BaseDescriptor): ...

Constructors

Configuration(byte[] buffer)

def __init__(self, buffer: list[int]):

Constructs a new descriptor.

Parameter	Type	Description
buffer	byte[]	The buffer with which to populate the descriptor.

Configuration(byte[] buffer, int offset)

def __init__(self, buffer: list[int], offset: int):

Constructs a new descriptor.

Parameter	Type	Description
buffer	byte[]	The buffer with which to populate the descriptor.
offset	int	The offset into the buffer at which to start.

Configuration()

def __init__(self):

Constructs a new descriptor.

Properties

Attributes

Attributes: int  # @property / @setter

A bitmap representing the attributes of the device.

Returns byte

AuxiliaryDescriptors

AuxiliaryDescriptors: list[Auxiliary]  # @property / @setter

Child auxiliary descriptors.

Returns Auxiliary[]

Index

Index: int  # @property / @setter

The configuration string descriptor index.

Returns byte

Interfaces

Interfaces: list[Interface]  # @property / @setter

Child interface descriptors.

Returns Interface[]

MaxPower

MaxPower: int  # @property / @setter

The maximum power consumption in 2mA units.

Returns byte

NumberOfInterfaces

NumberOfInterfaces: int  # @property / @setter

The number of interfaces.

Returns byte

TotalLength

TotalLength: int  # @property / @setter

Total length of the the data returned in bytes.

Returns ushort

Value

Value: int  # @property / @setter

The value to be used as an argument to select this configuration.

Returns byte

Methods

FillChildren(byte[] bytes, int offset)

def FillChildren(self, bytes: list[int], offset: int) -> None:

Walks a config-descriptor blob from offset to the end and fills Configuration.Interfaces, the nested endpoints, and Configuration.AuxiliaryDescriptors.

Parameter	Type	Description
bytes	byte[]	The full configuration-descriptor blob (length = Configuration.TotalLength).
offset	int	Byte offset to start parsing children: typically Configuration.FixedLength when the blob starts with the configuration header.

Fields

FixedLength

FixedLength: int = 9

The fixed length of this descriptor type in bytes.