MQTTCLIENT

This driver acts as an MQTT client (publisher/subscriber) for Hsyco, it fully supports MQTT version 3.1.1.

HSYCO Configuration

Add the MQTTCLIENT I/O Server in the I/O Servers section of the Settings and set its parameters:

Communication

• IP Address: host name or IP address of the MQTT broker
• IP Port: TCP/IP port of the MQTT broker

Authentication

• User: username for authentication with MQTT broker
• Password: password for authentication with MQTT broker

If presents, these two fields must be both not empty

Subscriptions file

Under the hsyco root directory you could have a file named "mqttsubscriptions.ini" which can contain a series of line, each line represents a topic to subscribe and the topic's quality-of-service (Qos):

<clientid>:username=<username>,password=<password>

E.g.

client123:username=homesensor,password=abc123

Clientid must be present in each line while username and password are optional; if username and password are not present there will be two cases:

• if default username and password are specified in "hsyco.ini" they will be used by the authentication mechanism
• if default username and password are not specified in "hsyco.ini" the authentication mechanism is disabled