Struct Io 

pub struct Io<'a> { /* private fields */ }

Output handle passed to command handlers.

Wraps the shell’s writer. The concrete transport type is hidden, so a command works unchanged over UART, USB CDC, etc.

Io also implements embedded_io_async::Write, so commands can pass it to any code expecting that trait (error type Error).

Implementations

impl<'a> Io<'a>

pub async fn print(&mut self, s: &str) -> Result<()>

Write a string slice, flushing so that it reaches the terminal.

pub async fn println(&mut self, s: &str) -> Result<()>

Write a string slice followed by \r\n, flushing the transport.

pub async fn write_all(&mut self, buf: &[u8]) -> Result<()>

Write a byte slice, flushing the transport.

pub async fn flush(&mut self) -> Result<()>

Flush the underlying writer.

Trait Implementations

impl ErrorType for Io<'_>

type Error = Error

Error type of all the IO operations on this type.

impl Write for Io<'_>

async fn write(&mut self, buf: &[u8]) -> Result<usize, Error>

Write a buffer into this writer, returning how many bytes were written.

async fn flush(&mut self) -> Result<(), Error>

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

async fn write_all(&mut self, buf: &[u8]) -> Result<(), Self::Error>

Write an entire buffer into this writer.