Initial code

Signed-off-by: Julien Riou <julien@riou.xyz>

debian/README.md

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+# Installation on Debian
+
+Install the following packages:
+- python3-serial
+- python3-paho-mqtt
+
+Then git clone this repository to **/opt/arduino-sensors-toolkit**.
+
+Create the *serial2mqtt* system user and add it to the *dialout* group to read the serial interface:
+```
+# adduser --system --disabled-password --disabled-login --home /var/lib/serial2mqtt \
+    --no-create-home --quiet --force-badname --group serial2mqtt
+# usermod -a -G dialout serial2mqtt
+```
+
+Copy the [serial2mqtt.service](serial2mqtt.service) file to **/etc/systemd/system/serial2mqtt.service**.
+
+Copy the [serial2mqtt.default](serial2mqtt.default) file to **/etc/default/serial2mqtt**.
+
+Reload systemd configuration with `systemctl daemon-reload`.
+
+Enable service with `systemctl enable serial2mqtt.service`.

debian/serial2mqtt.default

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+# Options passed as daemon argument
+#DAEMON_OPTS="-c /etc/serial2mqtt.ini -v"

debian/serial2mqtt.service

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+[Unit]
+Description=Read serial port and send sensors measurements to MQTT broker
+After=syslog.target network.target
+
+[Service]
+Type=simple
+User=serial2mqtt
+Group=serial2mqtt
+EnvironmentFile=-/etc/default/serial2mqtt
+ExecStart=/opt/arduino-sensors-toolkit/serial2mqtt.py $DAEMON_OPTS
+KillMode=process
+TimeoutSec=30
+Restart=no
+
+[Install]
+WantedBy=multi-user.target