Comments (3)
PropertiesChanged is a signal and cannot be used like that.
Signals in DBus are callbacks and they are executed by DBus if there is anything to tell you.
So creating and sending a Signal will simply do nothing at all.
To work with signals, your application has to register a signal handler for the signal you want to receive (like PropertiesChanged). Your code will then be call by DBus automatically.
So the stuff you want to do is simple change a property using setProperty on the Proeprties interfaces. DBus will then send the changes to bluez and bluez will propagate this to all connected devices.
from dbus-java.
Thanks for your reply.
If I understand your idea correctly:
class GattCharacteristic1Impl implements GattCharacteristic1, Properties {
...
@Override
public void WriteValue(byte[] value, Map<String, Variant<?>> params) {
....
// I try like this
Set("org.bluez.GattCharacteristic1", "Value", new Variant<>("hello".getBytes()));
}
....
}
Does not work
from dbus-java.
You are completely off the track...
If you want to write something to a characteristic, you first have to look it up on the bus.
Usually you will use bluez to look for bluetooth devices nearby by using the bluetooth adapter of your device (represented by a class implementing Adapter1 interface).
When you have found devices, you have a Device1 interface instance of each device found.
On the found device you can than look for services (represented by GattService1).
The GattService will than given you access to the characteristics (GattCharacteristic1) of the selected service.
Write your changes to that GattCharacteristic1 implementing class to change any value.
Anyways, this is not a issue of dbus-java but of not understanding how DBus and bluez work.
For using bluez with java, take a look at bluez-dbus.
Please take a look at the provided classes there. If you still don't understand, try to read the bluez documentation.
from dbus-java.
Related Issues (20)
- Documentation example does not work correctly. HOT 1
- In version 5, `withAutoConnect(false)` appears broken. HOT 2
- Cleanup AbstractConnection
- `default` interface methods. Or not. HOT 7
- problem to execute DBusViewer HOT 3
- How to export/publish Property in interface? HOT 2
- Properties Get method endless waiting HOT 1
- Cannot connect to DBUS HOT 11
- Sending signal with byte[] fails with verbose logging HOT 1
- [Feature request] Any plan in adding a module-info ? HOT 2
- Custom ITransportProvider cannot be found by ServiceLoader HOT 4
- Something a bit wrong with `@DBusBoundProperty` HOT 9
- Incorrect code generation for systemd StartTransientUnit HOT 3
- Add dbus-java-transport-junixsocket to dbus-java-bom
- Help with DBusConnectionBuilder HOT 2
- CodeGenerator does not create @DBusBoundProperty annotated fields properly for types TypeRef ans Struct HOT 2
- GetAll is not callable when using @DBusBoundProperty on a List<DBusPath> property HOT 1
- Memory leak in AbstractConnectionBase#importedObjects HOT 5
- Remove dependency on missing UnixSystem class HOT 1
- Graal Native Image Support HOT 9
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 dbus-java.