fuchsia.hardware.usb.peripheral

PROTOCOLS

Device

Defined in fuchsia.hardware.usb.peripheral/usb-peripheral.fidl

ClearFunctions

Tells the device to remove the child devices for the configuration's interfaces and reset the list of functions to empty. The caller should wait for the FunctionsCleared event.

Request

Name	Type

Response

Name	Type

SetConfiguration

Sets the device's descriptors, adds the functions and creates the child devices for the configuration's interfaces. At least one function descriptor must be provided.

Request

Name	Type
device_desc	DeviceDescriptor
config_descriptors	vector<vector<FunctionDescriptor>>[5]

Response

Name	Type
result	Device_SetConfiguration_Result

SetStateChangeListener

Adds a state change listener that is invoked when a state change completes.

Request

Name	Type
listener	request<Events>

Events

Defined in fuchsia.hardware.usb.peripheral/usb-peripheral.fidl

Events protocol that is used as a callback to inform the client of the completion of various server-side events. This callback interface can be registered using the SetStateChangeListener method on the Device protocol.

FunctionRegistered

Invoked when a function registers

Request

Name	Type

Response

Name	Type

FunctionsCleared

Invoked when all functions have been cleared.

Request

Name	Type

STRUCTS

DeviceDescriptor

Defined in fuchsia.hardware.usb.peripheral/usb-peripheral.fidl

The fields in DeviceDescriptor match those in usb_descriptor_t in the USB specification, except for the string fields.

Name	Type	Description	Default
bcd_usb	uint16		No default
b_device_class	uint8		No default
b_device_sub_class	uint8		No default
b_device_protocol	uint8		No default
b_max_packet_size0	uint8		No default
id_vendor	uint16		No default
id_product	uint16		No default
bcd_device	uint16		No default
manufacturer	string[127]		No default
product	string[127]		No default
serial	string[127]		No default
b_num_configurations	uint8		No default

Device_SetConfiguration_Response

Defined in fuchsia.hardware.usb.peripheral/usb-peripheral.fidl

Name	Type	Description	Default

FunctionDescriptor

Defined in fuchsia.hardware.usb.peripheral/usb-peripheral.fidl

Name	Type	Description	Default
interface_class	uint8		No default
interface_subclass	uint8		No default
interface_protocol	uint8		No default

UNIONS

Device_SetConfiguration_Result strict

Defined in fuchsia.hardware.usb.peripheral/usb-peripheral.fidl

Name	Type	Description
response	Device_SetConfiguration_Response
err	zx/status

CONSTANTS

Name	Value	Type	Description
MAX_CONFIG_DESCRIPTORS	5	uint32
MAX_FUNCTION_DESCRIPTORS	32	uint32
MAX_STRING_DESCRIPTORS	255	uint32
MAX_STRING_LENGTH	127	uint32

TYPE ALIASES

Name	Value	Description
ConfigurationDescriptor	vector[MAX_FUNCTION_DESCRIPTORS]