Separate uart rx and tx wakers, add uart fifo overrun detection, and clean up uart error handling #1799

	# This workflow checks whether the library is able to run without the std library (e.g., embedded).
	# This entire file should be removed if this crate does not support no-std. See check.yml for
	# information about how the concurrency cancellation and workflow triggering works
	permissions:
	contents: read

	on:
	push:
	branches: [main]
	pull_request:

	concurrency:
	group: ${{ github.workflow }}-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	name: no-std

	jobs:
	nostd:
	runs-on: ubuntu-latest
	name: ${{ matrix.target }}

	strategy:
	matrix:
	target: [thumbv8m.main-none-eabihf]

	steps:
	- uses: actions/checkout@v4
	with:
	submodules: true

	- name: Install stable
	uses: dtolnay/rust-toolchain@stable

	- name: rustup target add ${{ matrix.target }}
	run: rustup target add ${{ matrix.target }}

	- name: Show variable
	run: echo ${{ env.TOKEN }}

	- name: cargo check
	run: \|
	cargo check --target ${{ matrix.target }} --no-default-features -F mimxrt685s --locked
	cargo check --target ${{ matrix.target }} --no-default-features -F mimxrt633s --locked

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