Comments (6)
Finally there is no need to: the device already advertise itself through the MQTT. So this would be a complete waste of resources.
from homie-esp8266.
Actually, I would put this one on hold.. devices are advertised on the MQTT but i'm not sure that they will be discovered as such. finding this via wifi would make it more effective.. MQTT is more of a transport method.. understand what i mean ? ;)
from homie-esp8266.
Memory is precious, this is a waste of resources. Let me explain: if we make devices discoverable via mDNS, you can detect there is a device connected to the network and it's IP. Great. Then what? If you want to get other information about the device, or interact with it, you need to do it via MQTT anyway.
So simply, just subscribe to devices/+/$online
, check if it equals to true
and if yes, apply the regex ^devices\/([a-z0-9-]+)\/\$online$
to the topic, so you have the device ID in $1
and you've just discovered all Homie devices. 😄
from homie-esp8266.
I agree on that point.. (did not know about the + un a MQTT subscribe string).
I was looking into binding making on openhab2 and looks like you need predefined "things" switch, sensors, relay etc.. So i'm so sure this would be a good thing for your framework as you "thing" can virtually be anything a use defines.
Bottom line, this stays closed :)
from homie-esp8266.
Wow! Should put this trick in the readme file!
from homie-esp8266.
Good point! But where? In the Homie convention, or in the docs of this repo?
from homie-esp8266.
Related Issues (20)
- lint: fix warning "Using C-style cast" HOT 1
- Wemos D1 mini Pro crashes on boot up with debug flag enabled HOT 3
- Home Assistant integration
- Question: Delay between MQTT messages HOT 16
- [Request] Add support to save configure as json in web configurator
- Can't build with arduino-esp32 v2.0.2 (latest stable) HOT 4
- Public variables in PropertyInputHandler are undefined. HOT 2
- compilation failure on ESP32 HOT 3
- Get node property without intermediate variable HOT 1
- Compilation failure on ESP8266 HOT 2
- MQTT reconnect fails after Wifi-disconnect HOT 10
- Wrong MQTT topic used when advertising $unit HOT 1
- using ESP32 Serial1 interface triggers homie reset HOT 1
- Connection to HiveMQ Cloud not working
- 'HTTPClient::begin' declared with attribute error: obsolete API, use ::begin(WiFiClient, url) HOT 3
- version 4 HOT 1
- Issue with ArduinoIDE and manually installed libraries
- PlatformIO [email protected] linker error HOT 2
- HomieSetting.setDefaultValue("") might be freed crashing the mcu HOT 3
- Range index control is not valid
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from homie-esp8266.