#42 #37 update. #31

	# Created this action based on information found in:
	# - <https://github.com/marketplace/actions/test-compile-for-arduino>
	# - <https://docs.github.com/en/free-pro-team@latest/actions/quickstart>
	name: build-arduino
	on: [push, pull_request, workflow_dispatch]
	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v2
	- name: Cache pip
	uses: actions/cache@v2
	with:
	path: ~/.cache/pip
	key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
	restore-keys: \|
	${{ runner.os }}-pip-
	- name: Set up Python
	uses: actions/setup-python@v2
	- name: Update test code environments.
	run: \|
	sed -i -e "s/XXX/10/g" ./examples/coaptest/coaptest.ino
	sed -i -e "s/XXX/10/g" ./examples/esp8266/esp8266.ino
	sed -i -e "s/XXX/10/g" ./examples/esp32/esp32.ino
	python -m pip install --upgrade pip
	pip install pyserial
	- name: Arduino build
	uses: ArminJo/arduino-test-compile@v3
	with:
	arduino-board-fqbn: arduino:avr:uno
	required-libraries: Ethernet
	sketch-names: coaptest.ino
	- name: Arduino build For ESP8266
	uses: ArminJo/arduino-test-compile@v3
	with:
	platform-url: https://arduino.esp8266.com/stable/package_esp8266com_index.json
	arduino-board-fqbn: esp8266:esp8266:nodemcuv2
	sketch-names: esp8266.ino
	- name: Arduino build For ESP32
	uses: ArminJo/arduino-test-compile@v3
	with:
	platform-url: https://dl.espressif.com/dl/package_esp32_index.json
	arduino-board-fqbn: esp32:esp32:esp32thing
	sketch-names: esp32.ino

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