MQTT to system command

Trigger system command execution through MQTT.

Two modes of operation

• Arbitrary command mode: The message that is sent is executed as a system command
• Command index mode: The message sent contains an unsigned integer that is used as an index for a predefined commands arrays.

Configuration parameters

• mqtt_username: String that contains the username in case the MQTT connection requires credentials. Empty by default
• mqtt_password: String that contains the password in case the MQTT connection requires credentials. Empty by default

• mqtt_client_name: String that contains the name of the client to be connected to the MQTT broker. Defaults to mqtt_to_system_command
• mqtt_host: String the contains the broker's IP or hostname. Defaults to localhost
• mqtt_port: Integer that contains the MQTT broker's port. Defaults to 1883
• arbitrary_command_topic: String that contains the topic to listen to for arbitrary commands (The first mode). Defaults to mqtt_to_system_command/command
• command_index_topic: String that contains the topic to listen to for a command index. Defaults to mqtt_to_system_command/command_index
• commands: Vector of strings that contain the predefined commands to be executed based on the received index. Empty by default. The command_index_topic is not subscribed to if the commands parameter is empty

Command line arguments

Optionally, the first command line argument is the yaml configuration file. It defaults to config/conf.yaml.