Struct virtio_drivers::device::console::VirtIOConsole

pub struct VirtIOConsole<'a, H: Hal, T: Transport> { /* private fields */ }

Driver for a VirtIO console device.

Only a single port is allowed since alloc is disabled. Emergency write and cols/rows are not implemented.

Example

use virtio_drivers::device::console::VirtIOConsole;
let mut console = VirtIOConsole::<HalImpl, _>::new(transport)?;

let info = console.info();
println!("VirtIO console {}x{}", info.rows, info.columns);

for &c in b"Hello console!\n" {
  console.send(c)?;
}

let c = console.recv(true)?;
println!("Read {:?} from console.", c);

Implementations

impl<H: Hal, T: Transport> VirtIOConsole<'_, H, T>

pub fn new(transport: T) -> Result<Self>

Creates a new VirtIO console driver.

pub fn info(&self) -> ConsoleInfo

Returns a struct with information about the console device, such as the number of rows and columns.

pub fn ack_interrupt(&mut self) -> Result<bool>

Acknowledges a pending interrupt, if any, and completes the outstanding finished read request if there is one.

Returns true if new data has been received.

pub fn recv(&mut self, pop: bool) -> Result<Option<u8>>

Returns the next available character from the console, if any.

If no data has been received this will not block but immediately return Ok<None>.

pub fn send(&mut self, chr: u8) -> Result<()>

Sends a character to the console.

Trait Implementations

impl<H: Hal, T: Transport> Drop for VirtIOConsole<'_, H, T>

fn drop(&mut self)

Executes the destructor for this type.