change directory for firmware build. #18

	name: CI

	on:
	# Triggers the workflow on push or pull request events but only for the master branch
	push:
	branches: [master]
	tags: ["v..*"]
	pull_request:
	branches: [master]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v2

	# ensure we have the python version required for Platform IO.
	- uses: actions/setup-python@v4
	with:
	python-version: "3.11"
	# for CI builds. edit version.h to contain the branch name
	- name: write version.h
	run: \|
	export BRANCH_OR_TAG=${GITHUB_REF#refs/*/}
	echo BRANCH_OR_TAG
	echo "#define VERSION \"${BRANCH_OR_TAG}\"" > version.h
	cat version.h

	- name: Install PlatformIO Core
	run: pip install --upgrade platformio

	- name: Build PlatformIO Project
	run: \|
	cd firmware
	pio run

	# # publish tags as releases.
	# - name: Release
	# uses: softprops/action-gh-release@v1
	# if: startsWith(github.ref, 'refs/tags/')
	# with:
	# files: output/*

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