PROTOCOLS
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 |
|---|
Device
Defined in fuchsia.hardware.usb.peripheral/usb-peripheral.fidl
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
|
function_descriptors |
vector<FunctionDescriptor>[32]
|
Response
| Name | Type |
|---|---|
result |
Device_SetConfiguration_Result
|
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 |
|---|
SetStateChangeListener
Adds a state change listener that is invoked when a state change completes.
Request
| Name | Type |
|---|---|
listener |
request<Events>
|
STRUCTS
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 |
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 |
UNIONS
Device_SetConfiguration_Result
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_FUNCTION_DESCRIPTORS |
32
|
uint32 |
|
| MAX_STRING_DESCRIPTORS |
255
|
uint32 |
|
| MAX_STRING_LENGTH |
127
|
uint32 |