diff --git a/ci/build-arduino.sh b/ci/build-arduino.sh
new file mode 100644
index 0000000..6bce5e2
--- /dev/null
+++ b/ci/build-arduino.sh
@@ -0,0 +1,51 @@
+#!/bin/bash
+# Exit immediately if a command exits with a non-zero status.
+set -e
+# Enable the globstar shell option
+shopt -s globstar
+# Make sure we are inside the github workspace
+cd $GITHUB_WORKSPACE
+# Create directories
+mkdir $HOME/Arduino
+mkdir $HOME/Arduino/libraries
+# Install Arduino IDE
+export PATH=$PATH:$GITHUB_WORKSPACE/bin
+curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh
+arduino-cli config init
+arduino-cli config set library.enable_unsafe_install true
+arduino-cli core update-index --additional-urls https://arduino.esp8266.com/stable/package_esp8266com_index.json
+arduino-cli core update-index --additional-urls https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
+arduino-cli core update-index
+
+# Install Arduino AVR core
+# arduino-cli core install arduino:avr
+# arduino-cli core install arduino:samd
+# arduino-cli core install arduino:esp8266
+arduino-cli core install esp32:esp32
+
+# Link Arduino library
+ln -s $GITHUB_WORKSPACE $HOME/Arduino/libraries/CI_Test_Library
+
+arduino-cli lib install "MIDI library"
+arduino-cli lib install ArduinoBLE
+arduino-cli lib install NimBLE-Arduino
+
+# Compile all *.ino files for the Arduino Uno
+# for f in **/AVR_*.ino ; do
+#    arduino-cli compile -b arduino:avr:uno $f
+# done
+
+# Compile all *.ino files for the Arduino Uno
+# for f in **/SAMD_*.ino ; do
+#    arduino-cli compile -b arduino:samd:mkrzero $f
+# done
+
+# Compile all *.ino files for the Arduino Uno
+# for f in **/ESP8266_*.ino ; do
+#     arduino-cli compile -b arduino:esp8266:??? $f
+# done
+
+# Compile all *.ino files for the Arduino Uno
+for f in **/*.ino ; do
+     arduino-cli compile -b arduino:esp32:??? $f
+done
diff --git a/doc/spec.md b/doc/spec.md
new file mode 100644
index 0000000..e69de29
diff --git a/library.properties b/library.properties
index edcb015..83b1959 100644
--- a/library.properties
+++ b/library.properties
@@ -1,11 +1,11 @@
 name=BLE-MIDI
-version=2.1.1
+version=2.2
 author=lathoub
 maintainer=lathoub <lathoub@gmail.com>
 sentence=BLE-MIDI I/Os for Arduino
 paragraph=MIDI over Bluetooth Low Energy (BLE-MIDI) 1.0 for Arduino
 category=Communication
 url=https://github.com/lathoub/Arduino-BLE-MIDI
-architectures=esp32,samd,megaavr,mbed,mbed_nano,nrf52
+architectures=esp32,samd,megaavr,mbed,apollo3,mbed_nano,mbed_portenta
 includes=BLEMIDI_Transport.h
 depends=MIDI Library, NimBLE-Arduino, ArduinoBLE