Struct BlockingSerialPort

pub struct BlockingSerialPort(/* private fields */);

Serial port handle for blocking I/O

This struct is a lightweight version of SerialPort that can be used to perform blocking serial I/O (via Write or IoWrite). It is intended for use in places where interrupt-driven I/O is not possible, such as early bootstrapping or panic handling.

Implementations

impl BlockingSerialPort

pub unsafe fn new(base: u16) -> Self

Creates and returns a new BlockingSerialPort instance.

Safety

An 8250-compatible serial port must exist at the specified address. Otherwise we could end up spamming some unknown device with I/O operations.

For a given base address, there must be no other SerialPort or BlockingSerialPort in active use.

Trait Implementations

impl IoWrite for BlockingSerialPort

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

fn write_ring_buffer(&mut self, buf: &RingBuffer<'_, u8>) -> usize

impl Write for BlockingSerialPort

fn write_str(&mut self, s: &str) -> Result

Writes a string slice into this writer, returning whether the write succeeded.

fn write_char(&mut self, c: char) -> Result<(), Error>

Writes a char into this writer, returning whether the write succeeded.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Glue for usage of the write! macro with implementors of this trait.