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ThermostatGUIController (display and gui-logic) for a thermostat - to be used in combination with pelops/copreus and pelops/alcathous

Project description

This microservice is the gui controller for a thermostat. It listens to input events (buttons and rotary encoders) generated e.g. by copreus. As output it generates the desired set-point-values for the pid temperature control (like epidaurus) and additional information needed for the display server to generate to gui (e.g. nikippe).

The controller can handle different modes (like day/night) for manual operation and schedules (15 minute time slots) for automatic mode.

As the circuit for the thermostat controller allows to switch between observer and controller operation, this gui mirrors this by toggling between active and passive. Active operation means that the DAC is connected to the heater; passive that the DAC is disconnected by opening the relais.

Input topics: * set-point for temperature - up/down (string command) - reset to default (string command) * selector for mode - left/right (string command) - reset to default (string command) * active/passive operation toggle (string command)

Output topics: * temperature set-point (float value) * schedule chart image (encoded image) - see nikippe.mqttimage * mode icon identifier (string name) - see nikippe.imagelist * relais control (string command)

Argeus [1], son of Pelops and Hippodamia, by Hegesandra father of Alector and Boethoos. [wiki]

Pelops Overview

Pelops Overview

Argaeus is part of the collection of mqtt based microservices pelops. An overview on the microservice architecture and examples can be found at (http://gitlab.com/pelops/pelops).

For Users

Installation Core-Functionality

Prerequisites for the core functionality are:

sudo apt install python3 python3-pip

Install via pip:

sudo pip3 install pelops argaues

To update to the latest version add --upgrade as prefix to the pip3 line above.

Install via gitlab (might need additional packages):

git clone git@gitlab.com:pelops/argaues.git
cd argaeus
sudo python3 setup.py install

This will install the following shell scripts: * argaeus

The script cli arguments are: * ‘-c’/’–config’ - config file (mandatory) * ‘–version’ - show the version number and exit

YAML-Config

A yaml [2] file must contain three root blocks: * mqtt - mqtt-address, mqtt-port, and path to credentials file credentials-file (a file consisting of two entries: mqtt-user, mqtt-password) * logger - which log level and which file to be used * controller - mode-controller - list of different operation modes like fixed temperature or time schedule driven - setpoint-controller - changes the set-point of the current program - operation-controller - turns the outgoing relais on/off

mqtt:
    mqtt-address: localhost
    mqtt-port: 1883
    credentials-file: ~/credentials.yaml
    log-level: INFO

logger:
    log-level: DEBUG
    log-file: argeus.log

controller:
    operation-controller:  # turns the outgoing relais on/off
        default-is-active: True  # Is the controller active or passive initially
        topic-pub: /test/relais/closed  # Topic that controls the output behavior relais of the thermostat.
        command-active: ON  # set to active command - publish this value to topic-pub, to set the controller to active operation.
        command-passive: OFF  # set to passive command - publish this value to topic-pub, to set the controller to passive operation.
        topic-sub-toggle: /test/r1/button/pressed  # incoming event to toggle active/passive operation (optional together with command-toggle)
        command-toggle: PRESSED  # command for topic-sub-toggle / toggle active/passive operation (optional together with topic-sub-toggle)

    mode-controller:  # list of different operation modes like fixed temperature or time schedule driven
        default-mode: Schedule  # default mode - must be a name from modes list
        topics-sub:  # incoming topics
            to-prev: /test/r2/rotate  # select previous mode
            command-prev: LEFT  # to previous command - if this value is published to to-prev, the previous entry in the mode list is selected
            to-next: /test/r2/rotate  # select next mode
            command-next: RIGHT  # to next command - if this value is published to to-next, the next entry in the mode list is selected
            to-default: /test/r1/button/pressed  # incoming event to reset to default mode (optional together with command-default)
            command-default: PRESSED  # command for topic-sub / reset to default mode (optional together with to-default)
        topics-pub:  # outgoing topics
            display-server-schedule-image: /test/display/schedule  # topic of an nikippe-mqttimage instance
            display-server-mode-icon: /test/display/mode  # topic of an nikippe-imagelist instance
            temperature-set-point: /test/temperature/set-point  # topic of e.g. epidaurus (=pid temperature control) set-point listener
        modes:  # list of modes
            - name: Night  # unique name for mode entry
              type: program  # program or schedule - a schedule consists of programms
              selectable: True  # can be selected using the gui
              set-point: 19.5  # target temperature of this mode

            - name: Day  # unique name for mode entry
              type: program  # program or schedule - a schedule consists of programms
              selectable: True  # can be selected using the gui
              set-point: 23.0  # target temperature of this mode

            - name: Frost  # unique name for mode entry
              type: program  # program or schedule - a schedule consists of programms
              selectable: False  # can be selected using the gui
              set-point: 5.0  # target temperature of this mode

            - name: Schedule  # unique name for mode entry
              type: schedule  # program or schedule - a schedule consists of programms
              selectable: True  # can be selected using the gui
              image:  # generate image for nikippe.mqttimage
                  width: 192  # width of image
                  height: 2  # height of image
                  foreground-color: 255  # from 0 to 255.
                  background-color: 0  # from 0 to 255.
                  patterns:  # 0, 1, 2, 3 are valid patterns
                      Night: 0    # nothing
                      Morning: 1  # lower dot
                      Day: 2      # upper and lower dot
                      Frost: 3    # upper dot
              schedule:  # definition which program is active in each 15 minute slot of a day
                  "00:00": Night
                  "00:15": Night
                  "00:30": Night
                  "00:45": Night
                    ...
                  "12:00": Day
                  "12:15": Day
                  "12:30": Day
                  "12:45": Day
                    ...
                  "23:00": Night
                  "23:15": Night
                  "23:30": Night
                  "23:45": Night

    setpoint-controller:  # changes the set-point of the current program
        topic-sub-down: /test/r1/rotate  # reduce temperature topic
        command-down: LEFT  # down command - if this value is published to topic-sub-down, temp is reduced.
        topic-sub-up: /test/r1/rotate  # increase temperature topic
        command-up: RIGHT  # up command - if this value is published to topic-sub-up, temp is increased.
        topic-sub-reset: /test/r1/button/pressed  # incoming event to reset temperature to default (optional together with command-reset)
        command-reset: PRESSED  # command for topic-sub-reset / reset to default (optional together with topic-sub-reset)
        step-size: 0.5  # Temperature is changed by step size for each rotation step.
        max-temp: 30.0  # Maximum value for temperature
        min-temp: 10.0  # Minimum value for temperature

systemd

  • add systemd example.

For Developers

Getting Started

The main class ThermostatGUIController is a specialication of pelops AbstractMicroservice hosts the (currently) three sub-controller ModeController, SetPointController, and OperationController. They must be specializations of AController.

Todos

Misc

The code is written for python3 (and tested with python 3.5 on an Raspberry Pi Zero with Raspbian Stretch).

Merge requests / bug reports are always welcome.

[1]Again, not an icon of the “real” Argeus. It is a picture used in the context of Argeus I of Macedon wiki.
[2]Currently, pyyaml is yaml 1.1 compliant. In pyyaml On/Off and Yes/No are automatically converted to True/False. This is an unwanted behavior and deprecated in yaml 1.2. In copreus this autoconversion is removed. Thus, On/Off and Yes/No are read from the yaml file as strings (see module baseclasses.myconfigtools).

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