CODESYS-MQTT

MQTT client library for CODESYS

integration guide

• look here

https://github.com/stefandreyer/CODESYS-MQTT/blob/master/doc/integration.md

JSON

• new library for easy use with JSON/zigbee2mqtt:

https://github.com/stefandreyer/CODESYS-zigbee2mqtt

BENEFITS

• very fast, every received paket is deivierd to application in the cycle it was received
• in out of the box configuration, 50 pakets can be transmittet in on cycle in QoS 0
• very powerfull integration due calllbacks
• multibroker support

New Version 1.2.0.1

• solved some reliable issues
• added supervison FB, monitor your MQTT client with MQTT
• changed namespace
• addad any support for publish
• solved wrong payload delivery to application with big pakets
• changed name of HANDLE_MQTT to MQTTClient
• changed call of MQTTClient, do only call nested in MQTT_IN_OUT instance
• added suport of nested subscriber, client can return reference to a dynamic created subscriber instance
• changed type types to Base Interfaces TypeClass for any support
• replaced some librarys with placeholders for better intigration support
• QoS channel size and History size can now be configurated
• changed many pointers to references
• done some conventional naming stuff

NEW Example!

• please have a look in the GreatExampleOfAdvantages!
• it runs out of the box with test.mosquitto.org
• there look into MyProperty programm
• it shows you how to never ever again tipp any topic in you program!
• have fun!!!

NEWS

• 64bit support, but you need to enable dynamic memory allocation
• much faster testHighReciveSplitPayload() works with nearly 600 sends, recives per second!

subscription now works with new approach

• now is done with callbacks
• see the TestMQTTGithubInterfaceExampleTopicAndPayload examples, there you can see the benefits. You can publish direkt to the instance and variable name, and the lib is doing the rest have fun!

Dependencies

all needed Libraries can be found at

https://github.com/stefandreyer

Features

• all QoS Levels for publish and subscribe
• will topic
• retain option for publish and will topic
• unlimited publish FBs(by library)
• unlimited subscribe FBs(by library)
• TLS support(without certificates)
• FBs for easy transmit of values and states
• nice collection FB for collecting subscription FBs
• usefull FBs for callbacks, for list use too
• client is not thread safe!

New value FB

created an new FB for easy publishing Values to broker

New Stats FB

created new FB for easy publishing stats(on/off, true/false) to broker

Will topic

will topic is now build with client id

Examples

nice example projets for Windows and RaspberryPi with and without TLS using test.mosquitto.org, so no own broker needed