Struct UsbFs

pub struct UsbFs { /* private fields */ }

Implementations

impl UsbFs

pub fn from_device(device: &UsbDevice) -> Result<UsbFs>

pub fn from_bus_device_read_only(bus: u8, dev: u8) -> Result<UsbFs>

This is used when read file descriptor strings.

pub fn from_bus_device(bus: u8, dev: u8) -> Result<UsbFs>

pub fn reset(&mut self) -> Result<()>

pub fn clear_halt(&mut self, ep: u8) -> Result<()>

pub fn handle(&self) -> &File

pub fn descriptors(&mut self) -> &Option<UsbDevice>

pub fn capabilities(&mut self) -> Result<u32>

pub fn async_response(&mut self) -> Result<TransferKind>

Returns latest transmitted async result or an error. Example:

let mut urb = usb.new_bulk(1, 64);
// poll then
let urb = usb.async_response()
match transfer {
   Ok(transfer) => { // do stuff }
   Err(e) if e.kind() == ErrorKind::WouldBlock => {},
   Err(e) => { return Err(e); }
}

The returned Transfer can be reused after call transfer.flush()

pub fn async_response_all(&mut self) -> Result<usize>

Read all URB responses if there are any pending and store it in transfers Should be called after mio poll if there is any pending usb_submit’s. The TransferKind is stored in transfers and can be read using collect_responses()

Example usage:

usb.submit_bulk(bulk);
poll.poll(&mut events, Duration::from_secs(1))?;
if !events.is_empty() {
    usb.async_response_all()?;
    for transfer in usb.collect_responses() { // Do stuff }
}

pub fn collect_responses(&mut self) -> Vec<TransferKind>

Take all bulk/control responses

pub fn claim_interface(&mut self, interface: u32) -> Result<()>

Claim interface

• the interface number to claim

Examples

Basic usage:

usb.claim_interface(1)

pub fn set_interface(&mut self, interface: u32, alt_setting: u32) -> Result<()>

pub fn release_interface(&self, interface: u32) -> Result<()>

Release interface

• the interface number to claim

Examples

Basic usage:

usb.release_interface(1)

pub fn bulk_read( &self, ep: u8, mem: &mut [u8], timeout: TimeoutMillis, ) -> Result<u32>

Blocked bulk read Consider use @async_transfer() instead.

pub fn bulk_write( &self, ep: u8, mem: &[u8], timeout: TimeoutMillis, ) -> Result<u32>

Blocked bulk write consider use @async_transfer() instead

pub fn get_descriptor_string(&mut self, id: u8) -> Result<String>

Get descriptor string with id for default interface

pub fn get_descriptor_string_iface( &mut self, iface: u16, id: u8, ) -> Result<String>

Get descriptor string with id for interface

pub fn submit_bulk(&mut self, bulk: BulkTransfer) -> Result<i32>

Submit a new bulk transfer this will not block. One shall call mio poll and async_response(_all) after this call to get the transfer back Note that if the transfer is reused the user must call flush() and fill it with data before submit_bulk. Example:

bulk_out.flush()?;
bulk.write_all(&b"HELLO\n")?;
usb.submit_bulk(bulk);
// poll
resp = usb.async_response();
match resp { // do stuff }

pub fn submit_control(&mut self, control: ControlTransfer) -> Result<i32>

Submit a new control transfer this will not block. One shall call mio poll and async_response(_all) after this call to get the transfer back Note that if the transfer is reused the user must call flush() before pass it to submit_control.

pub fn control_async_wait( &mut self, ctrl: ControlTransfer, timeout_ms: TimeoutMillis, ) -> Result<ControlTransfer>

Wait for control response up to timeout ms. If it find other transfers those are stored in transfers and can be read using responses()

Trait Implementations

impl Drop for UsbFs

fn drop(&mut self)

Executes the destructor for this type.

impl UsbCoreDriver for UsbFs

fn new_bulk_in( &mut self, ep: u8, buffer_capacity: usize, ) -> Result<BulkTransfer>

fn new_bulk_out( &mut self, ep: u8, buffer_capacity: usize, ) -> Result<BulkTransfer>

fn new_control( &mut self, request_type: u8, request: u8, value: u16, index: u16, length: u16, ) -> Result<ControlTransfer>

fn new_control_out( &mut self, request_type: u8, request: u8, value: u16, index: u16, buffer: &[u8], ) -> Result<ControlTransfer>

fn new_control_in( &mut self, request_type: u8, request: u8, value: u16, index: u16, length: u16, ) -> Result<ControlTransfer>

fn new_control_nodata( &mut self, request_type: u8, request: u8, value: u16, index: u16, ) -> Result<ControlTransfer>