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mr-manuel committed Jul 21, 2023
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9 changes: 9 additions & 0 deletions .flake8
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# Explicitly declare text files you want to always be normalized and converted
# to native line endings on checkout.
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*.md text
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4 changes: 4 additions & 0 deletions CHANGELOG.md
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# Changelog

## v0.0.1
Initial release
21 changes: 21 additions & 0 deletions LICENSE
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MIT License

Copyright (c) 2022 Manuel

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
125 changes: 125 additions & 0 deletions README.md
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# dbus-mqtt-temperature - Emulates a temperature sensor from MQTT data

<small>GitHub repository: [mr-manuel/venus-os_dbus-mqtt-temperature](https://github.com/mr-manuel/venus-os_dbus-mqtt-temperature)</small>

### Disclaimer

I wrote this script for myself. I'm not responsible, if you damage something using my script.


### Purpose

The script emulates a temperature sensor in Venus OS. It gets the MQTT data from a subscribed topic and publishes the information on the dbus as the service `com.victronenergy.temperature.mqtt_temperature` with the VRM instance `100`.


### Config

Copy or rename the `config.sample.ini` to `config.ini` in the `dbus-mqtt-temperature` folder and change it as you need it.


### JSON structure

<details><summary>Minimum required</summary>

```json
{
"temperature": 22.0
}
```

OR

```json
{
"value": 22.0
}
```
</details>

<details><summary>Full</summary>

```json
{
"temperature": 22.0,
"humidity": 62.927,
"pressure": 102.104
}
```
</details>


### Install

1. Copy the `dbus-mqtt-temperature` folder to `/data/etc` on your Venus OS device

2. Run `bash /data/etc/dbus-mqtt-temperature/install.sh` as root

The daemon-tools should start this service automatically within seconds.

### Uninstall

Run `/data/etc/dbus-mqtt-temperature/uninstall.sh`

### Restart

Run `/data/etc/dbus-mqtt-temperature/restart.sh`

### Debugging

The logs can be checked with `tail -n 100 -f /data/log/dbus-mqtt-temperature/current | tai64nlocal`

The service status can be checked with svstat `svstat /service/dbus-mqtt-temperature`

This will output somethink like `/service/dbus-mqtt-temperature: up (pid 5845) 185 seconds`

If the seconds are under 5 then the service crashes and gets restarted all the time. If you do not see anything in the logs you can increase the log level in `/data/etc/dbus-mqtt-temperature/dbus-mqtt-temperature.py` by changing `level=logging.WARNING` to `level=logging.INFO` or `level=logging.DEBUG`

If the script stops with the message `dbus.exceptions.NameExistsException: Bus name already exists: com.victronenergy.temperatureinverter.mqtt_temperature"` it means that the service is still running or another service is using that bus name.

### Multiple instances

It's possible to have multiple instances, but it's not automated. Follow these steps to achieve this:

1. Save the new name to a variable `driverclone=dbus-mqtt-temperature-2`

2. Copy current folder `cp -r /data/etc/dbus-mqtt-temperature/ /data/etc/$driverclone/`

3. Rename the main script `mv /data/etc/$driverclone/dbus-mqtt-temperature.py /data/etc/$driverclone/$driverclone.py`

4. Fix the script references for service and log
```
sed -i 's:dbus-mqtt-temperature:'$driverclone':g' /data/etc/$driverclone/service/run
sed -i 's:dbus-mqtt-temperature:'$driverclone':g' /data/etc/$driverclone/service/log/run
```
5. Change the `device_name` and increase the `device_instance` in the `config.ini`
Now you can install and run the cloned driver. Should you need another instance just increase the number in step 1 and repeat all steps.
### Compatibility
It was tested on Venus OS Large `v2.92` on the following devices:
* RaspberryPi 4b
* MultiPlus II (GX Version)
### Screenshots
<details><summary>MQTT Temperature</summary>
![Temperature - device list](/screenshots/temperature_device-list.png)
![Temperature - device list - mqtt temperature 1](/screenshots/temperature_device-list_mqtt-temperature-1.png)
![Temperature - device list - mqtt temperature 2](/screenshots/temperature_device-list_mqtt-temperature-2.png)
### GuiMods
![Temperature - pages](/screenshots/temperature_pages_guimods.png)
</details>
## Supporting/Sponsoring this project
You like the project and you want to support me?
[<img src="https://github.md0.eu/uploads/donate-button.svg" height="50">](https://www.paypal.com/donate/?hosted_button_id=3NEVZBDM5KABW)
65 changes: 65 additions & 0 deletions dbus-mqtt-temperature/config.sample.ini
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; CONFIG FILE
; GitHub reporitory: https://github.com/mr-manuel/venus-os_dbus-mqtt-temperature
; remove semicolon ; to enable desired setting

[DEFAULT]
; Set logging level
; ERROR = shows errors only
; WARNING = shows ERROR and warnings
; INFO = shows WARNING and running functions
; DEBUG = shows INFO and data/values
; default: WARNING
logging = WARNING

; Device name
; default: MQTT Temperature
device_name = MQTT Temperature

; Device VRM instance
; default: 100
device_instance = 100

; Specify after how many seconds the driver should exit (disconnect), if no new MQTT message was received
; default: 60
; value to disable timeout: 0
timeout = 60

; Temperature type
; 0 = battery
; 1 = fridge
; 2 = generic
; default: 2
type = 2


[MQTT]
; IP addess or FQDN from MQTT server
broker_address = IP_ADDR_OR_FQDN

; Port of the MQTT server
; default plaintext: 1883
; default TLS port: 8883
broker_port = 1883

; Enables TLS
; 0 = Disabled
; 1 = Enabled
;tls_enabled = 1

; Absolute path to the Certificate Authority certificate file that is to be treated as trusted by this client
;tls_path_to_ca = /data/keys/mosquitto.crt

; Disables verification of the server hostname in the server certificate
; 0 = Disabled
; 1 = Enabled
;tls_insecure = 1

; Username used for connection
;username = myuser

; Password used for connection
;password = mypassword

; Topic where the temperature data as JSON string is published
; minimum required JSON payload: {"temperature": 22.0 } or {"value": 22.0}
topic = N/aa00aa00aa00/battery/1/System/Temperature2
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