Struct PrinterBuilder 

#[non_exhaustive]
pub struct PrinterBuilder {
    pub pnp_string: Option<String>,
    pub qlen: Option<u8>,
}

Builder for USB printer function.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

pnp_string: Option<String>

The PNP ID string used for this printer.

qlen: Option<u8>

The number of 8k buffers to use per endpoint. The default is 10.

Implementations

impl PrinterBuilder

pub fn build(self) -> (Printer, Handle)

Build the USB function.

The returned handle must be added to a USB gadget configuration.

Examples found in repository

examples/printer.rs (line 57)

fn create_printer_gadget() -> Result<RegGadget> {
    usb_gadget::remove_all().expect("cannot remove all gadgets");

    let udc = default_udc().expect("cannot get UDC");
    let mut builder = Printer::builder();
    builder.pnp_string = Some("Rust PNP".to_string());

    let (_, func) = builder.build();
    let reg = Gadget::new(
        Class::INTERFACE_SPECIFIC,
        Id::LINUX_FOUNDATION_COMPOSITE,
        Strings::new("Clippy Manufacturer", "Rusty Printer", "RUST0123456"),
    )
    .with_config(Config::new("Config 1").with_function(func))
    .bind(&udc)?;

    Ok(reg)
}

Trait Implementations

impl Clone for PrinterBuilder

fn clone(&self) -> PrinterBuilder

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PrinterBuilder

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.