uart_16550 0.6.0

Simple yet highly configurable low-level driver for 16550 UART devices, typically known and used as serial ports or COM ports. Easy integration into Rust while providing fine-grained control where needed (e.g., for kernel drivers).
Documentation 
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name: Build

on: [  pull_request, merge_group ]

concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}-${{ github.event_name }}
  cancel-in-progress: true

env:
  CARGO_TERM_COLOR: always

jobs:
  build:
    runs-on: "${{ matrix.runs-on }}"
    strategy:
      fail-fast: false
      matrix:
        runs-on:
          - macos-latest # aarch64
          - ubuntu-latest # x86_64
          - windows-latest # x86_64
        rust:
          - stable
          - nightly
          - 1.85.1 # MSVR
    steps:
      - uses: actions/checkout@v6
      - name: Setup Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: "${{ matrix.rust }}"
          targets: x86_64-unknown-linux-gnu,x86_64-unknown-uefi,i686-unknown-uefi,thumbv7em-none-eabihf,aarch64-unknown-uefi,riscv64gc-unknown-none-elf
      - uses: Swatinem/rust-cache@v2
        with:
          key: "${{ matrix.runs-on }}-${{ matrix.rust }}"
      - name: Build
        run: cargo build --all-targets --verbose
      - name: Build (no_std, x86, aarch64, riscv)
        run: |
          cargo build --verbose --all-features --target aarch64-unknown-uefi
          cargo build --verbose --all-features --target i686-unknown-uefi
          cargo build --verbose --all-features --target riscv64gc-unknown-none-elf
          cargo build --verbose --all-features --target x86_64-unknown-uefi
      - name: Build (no_std, aarch64)
        run: cargo build --verbose --all-features --target thumbv7em-none-eabihf
      - name: Run tests
        run: cargo test --verbose --all-features

  integration_test:
    runs-on:  ubuntu-latest
    steps:
      - uses: actions/checkout@v6
      - name: Setup Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: stable
      - uses: Swatinem/rust-cache@v2
        with:
          key: "integration-test"
          cache-directories:
            ./test/target
      - name: Install QEMU
        run: |
          sudo apt-get update
          sudo apt-get install -y qemu-system-i386

      - name: Verify QEMU installation
        run: qemu-system-i386 --version
      - name: Build
        run: cd test && make
      - name: Run
        run: cd test && make run

  miri:
    runs-on: ubuntu-latest
    needs:
      # Logical dependency and wait for cache to be present
      - build
    strategy:
      matrix:
        rust:
          - nightly
    steps:
      - uses: actions/checkout@v6
      - name: Setup Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: "${{ matrix.rust }}"
      - uses: Swatinem/rust-cache@v2
        with:
          key: "${{ matrix.rust }}"
      - run: rustup component add miri
      - run: cargo miri test --tests

  # Style + documentation checks
  style_checks:
    runs-on: "${{ matrix.runs-on }}"
    strategy:
      matrix:
        runs-on:
          - macos-latest # aarch64
          - ubuntu-latest # x86_64
          - windows-latest # x86_64
        rust:
          - stable
    steps:
      - uses: actions/checkout@v6
      - name: Setup Rust toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: "${{ matrix.rust }}"
      - uses: Swatinem/rust-cache@v2
        with:
          key: "${{ matrix.rust }}"
      - name: Rustfmt
        run: cargo fmt --all -- --check
      - name: Clippy
        run: cargo clippy --all-targets
      - name: Rustdoc
        run: cargo doc --no-deps --document-private-items
      - name: Rustdoc (doc_cfg + nightly)
        env:
          RUSTDOCFLAGS: --cfg docsrs
        run: cargo +nightly doc --no-deps --document-private-items