chore: add build pipeline #14

	name: Badgemagic Firmware build

	on:
	push:
	pull_request:
	branches: [master]

	env:
	MRS_TOOLCHAIN: MRS_Toolchain_Linux_x64_V1.91
	BUILD_DIR: build
	BIN_TYPES: '{.bin,.elf}'

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Cache toolchain
	id: cache-toolchain
	uses: actions/cache@v4
	with:
	path: ${{ env.MRS_TOOLCHAIN }}
	key: ${{ env.MRS_TOOLCHAIN }}-cache

	- name: Download toolchain
	if: steps.cache-toolchain.outputs.cache-hit != 'true'
	run: \|
	wget http://file-oss.mounriver.com/tools/${{ env.MRS_TOOLCHAIN }}.tar.xz
	tar -xvf ${{ env.MRS_TOOLCHAIN }}.tar.xz

	- name: Build firmware
	run: \|
	export PREFIX=${{ env.MRS_TOOLCHAIN }}/RISC-V_Embedded_GCC/bin/riscv-none-embed-
	export BUILD_DIR=${{ env.BUILD_DIR }}
	make -j$(nproc)

	- uses: actions/upload-artifact@v4
	with:
	name: badgemagic-firmware
	path: ${{ env.BUILD_DIR }}/badgemagic-*

	- name: Upload firmware binaries to bin branch
	# Skip upload APK for pull requests & only allow binaries build from master
	if: ${{ github.event_name != 'pull_request' && github.ref_name == 'master' }}
	run: \|
	git config --global user.name "${{ github.workflow }}"
	git config --global user.email "gh-actions@${{ github.repository_owner }}"

	mv ${{ env.BUILD_DIR }}/badgemagic-*${{ env.BIN_TYPES }} ./

	git checkout --orphan bin
	git reset
	git add badgemagic-*${{ env.BIN_TYPES }}
	git commit -am "[Auto] Update firmware binaries from ${{ github.ref_name }} ($(date +%Y-%m-%d.%H:%M:%S))"
	git push --force origin bin

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