Struct arduino_mkrzero::thumbv6m::usb::usb_device::class_prelude::UsbBusAllocator
source ·
[−]pub struct UsbBusAllocator<B> where
B: UsbBus, { /* fields omitted */ }
Expand description
Helper type used for UsbBus resource allocation and initialization.
Implementations
Creates a new UsbBusAllocator
that wraps the provided UsbBus
. Usually only called by
USB driver implementations.
Allocates a new interface number.
Allocates a new string index.
pub fn alloc<D>(
&self,
ep_addr: Option<EndpointAddress>,
ep_type: EndpointType,
max_packet_size: u16,
interval: u8
) -> Result<Endpoint<'_, B, D>, UsbError> where
D: EndpointDirection,
pub fn alloc<D>(
&self,
ep_addr: Option<EndpointAddress>,
ep_type: EndpointType,
max_packet_size: u16,
interval: u8
) -> Result<Endpoint<'_, B, D>, UsbError> where
D: EndpointDirection,
Allocates an endpoint with the specified direction and address.
This directly delegates to UsbBus::alloc_ep
, so see that method for details. In most
cases classes should call the endpoint type specific methods instead.
pub fn control<D>(&self, max_packet_size: u16) -> Endpoint<'_, B, D> where
D: EndpointDirection,
pub fn control<D>(&self, max_packet_size: u16) -> Endpoint<'_, B, D> where
D: EndpointDirection,
Allocates a control endpoint.
This crate implements the control state machine only for endpoint 0. If classes want to support control requests in other endpoints, the state machine must be implemented manually. This should rarely be needed by classes.
Arguments
max_packet_size
- Maximum packet size in bytes. Must be one of 8, 16, 32 or 64.
Panics
Panics if endpoint allocation fails, because running out of endpoints or memory is not feasibly recoverable.
Allocates an interrupt endpoint.
max_packet_size
- Maximum packet size in bytes. Cannot exceed 64 bytes.
Panics
Panics if endpoint allocation fails, because running out of endpoints or memory is not feasibly recoverable.