subsys/console/console.rs

// Copyright 2025 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License

#![no_std]

use embedded_io::{ErrorType, Write};
use spinlock::{BareSpinLock, BareSpinLockApi};

use console_backend::ConsoleBackend;

static CONSOLE_SPINLOCK: BareSpinLock = BareSpinLock::new();

pub struct ConsoleLock {
    _lock: <BareSpinLock as BareSpinLockApi>::Guard<'static>,
}

impl ErrorType for ConsoleLock {
    type Error = pw_status::Error;
}

impl Write for ConsoleLock {
    fn write(&mut self, buf: &[u8]) -> Result<usize, Self::Error> {
        ConsoleBackend {}.write(buf)
    }

    fn flush(&mut self) -> Result<(), Self::Error> {
        ConsoleBackend {}.flush()
    }
}

pub fn get_console() -> ConsoleLock {
    ConsoleLock {
        _lock: CONSOLE_SPINLOCK.lock(),
    }
}