BleUtils | ble development and debugging tools

by suzeyu1992 Java Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(6)Vulnerabilities Install Support

kandi X-RAY | BleUtils Summary

BleUtils is a Java library. BleUtils has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

ble development and debugging tools

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Quality

Security

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Reuse

Support

BleUtils has a low active ecosystem.

It has 2 star(s) with 0 fork(s). There are 1 watchers for this library.

It had no major release in the last 6 months.

BleUtils has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of BleUtils is current.

Quality

BleUtils has 0 bugs and 0 code smells.

Security

BleUtils has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

BleUtils code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

BleUtils does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

BleUtils releases are not available. You will need to build from source code and install.

Build file is available. You can build the component from source.

Top functions reviewed by kandi - BETA

kandi has reviewed BleUtils and discovered the below as its top functions. This is intended to give you an instant insight into BleUtils implemented functionality, and help decide if they suit your requirements.

Initializes the view
Set view color animation
Open GPS Intent
Initializes BluetoothManager
Set view color animation
Open GPS Intent
OnClick button
Convert decimal to hex string
Convert hex string to decimal number
Button handler
Enable or disables the given characteristic
Called when a device is clicked
Handle click
Get group view
SetCharacteristic send data
Initializes the switch
Initializes the BluetoothAdapter
SUS
Region resume advertising
Create a child view
Called when an option is selected
Displays a list of supported GATT services
Display the given characteristic
Broadcasts an event to the device
Initialize the activity
Initializes the device
Resume scan
Called when a menu item is selected

Get all kandi verified functions for this library.

BleUtils Key Features

No Key Features are available at this moment for BleUtils.

BleUtils Examples and Code Snippets

No Code Snippets are available at this moment for BleUtils.

Community Discussions

Trending Discussions on BleUtils

Sending data over the air and after completion end the operation using RxAndroidBLE

Bluetooth Low Energy (between ESP32 and Android smartphone): Data transmission quite slow

Android + ESP32 send data over bluetooth (BLE)

C++ how to query value outside the callback arduino

ESP32 Arduino BLE DeepSleep

Parse Bluetooth ble.write json string on Arduino

QUESTION

Sending data over the air and after completion end the operation using RxAndroidBLE

Asked 2022-Jan-02 at 10:07

I am trying to send the 128 bytes of the block to BLE Controller using the RxAndroidBle library. the flow to send data from mobile to BLE controller is as follows

Connect with BLE Controller
Start OTA (sending 1)
Send CRC (of the data block)
Send data block
wait for 2 seconds
repeat step 3
END OTA (sending 2)

Here is snapshot of a code

...

ANSWER

Answered 2022-Jan-02 at 10:07

You can use flatMapIterable() with toList(). Try to add toList() operator before OTA_DATA_END command like:

Source https://stackoverflow.com/questions/70548331

QUESTION

Bluetooth Low Energy (between ESP32 and Android smartphone): Data transmission quite slow

Asked 2021-Aug-26 at 08:24

This is my first question ever asked on this board

The project explained short:

5 sensors, connected with an esp32 board are transmitting 1000 samples/second, each sample has 16 bit. Those values should be transmitted via BLE (With the BLE Arduino library and an ESP32). The connected device (Smartphone) should read those values and do something with them (Also via BLE, with the following library: https://github.com/RobotPajamas/Blueteeth). The ESP32 is the Server! Java is used in Android Studio!

The problem:

While testing the BLE connection a simple "hello world" was transmitted as the value for a characteristic. Every time i received the "hello world" on the android-device-side, a variable was incremented: The problem is, the variable only got incremented 4 times in one second. This means (assuming 1 char in a string equals 1 byte) 11byte*4(1/s)=44byte/s are being transmitted. -> This clearly is not enough (should not BLE transmit ~2MBit/s (minus the protocol-data))

Code Fragments

ESP32: BLE-Server that transmits value

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ANSWER

Answered 2021-Aug-07 at 10:56

I was reading BLE wikipedia page and the minimum data rate is 125Kbit/s , so I think that in your case is viable, because you only will transmit 16Kbit/s. Take a look in BLE wikipedia.

Source https://stackoverflow.com/questions/68691485

QUESTION

Android + ESP32 send data over bluetooth (BLE)

Asked 2021-Jun-03 at 07:12

I'm trying to send data from my android app to an esp32 over bluetooth (BLE) but i can't find the proper way to do it. All i can do for now is scan and find ble devices. My arduino code is working as i want (it receives the data properly) because i used another app which let me send data to ble devices so i know the arduino code is fine.

I've been searching for days here and google how to achieve it but i still stucked in it. This is my code for now:

Scanner:

...

ANSWER

Answered 2021-May-31 at 09:00

In order to get this working, I would do the following if I was you:-

Part A: Get this working with an existing Android app (e.g. nRF Connect - maybe you've already done this part)

Download and install nRF Connect app from the play store.
Launch nRF Connect app and scan for devices.
Connect to your ESP32 if it was found.
Browse the GATT table and find the UUID and handle of the characteristic that controls the ESP32. This is important as it will be used in Part B.
Once found, try to write the values 0, 1, 2, 3, and 4 to this characteristic and ensure that everything is working.

If there are parts above that are new to you, please have a look at the links below. If you've already successfully done all of the above, then move to Part B:-

Part B: Get this working using your Android app:-

Similar to the nRF Connect app, your app needs to scan and connect to the ESP32. You can find examples on how to do this here.
Once you are connected, you need to browse the GATT Table and find the right characteristic. You can find examples for this here.
Once you find the right characteristic and its handle (this is the one you noted in step 4 above), proceed to write values to this characteristic. You can find examples here, here and here.

If all of this is in place and it is still not working, here are things to check:-

Are you waiting for the GATT write completion callback? Also check this.
Are you using the right Android write operation?
Are you maybe using reliable writes instead of normal write?
Are you sending integer data instead of string data? The app expects integer data in order to work properly.

You can find examples and explanations about the steps above in the links below:-

Source https://stackoverflow.com/questions/67742410

QUESTION

C++ how to query value outside the callback arduino

Asked 2021-Jan-12 at 11:30

I want that the measurement interval and MQTT server settings can be changed from cellphone by BLE. I use LightBlue as a mobile application.

Here is my BLE code that works well with my mobile application

...

ANSWER

Answered 2021-Jan-12 at 11:30

You need to declare your variable interval as global variable to access it from everywhere in your file. A global variable can be declared outside of functions.

The value you receive is of type std::string and you want to use it as long. You can use toInt() to convert the variable from String to Long.

Try something like this:

Source https://stackoverflow.com/questions/65660207

QUESTION

ESP32 Arduino BLE DeepSleep

Asked 2020-May-15 at 19:18

I am working on a project involving 2 ESP32 Wemos D1 Mini boards. I am using the BLE feature to transmit a sensor reading from the "server" to the "client". I use a Characteristic Notify to the client which receives the sensor reading. If I want to implement deep sleep functionality to the server, what would happen to the client? Does the client also have to reset at some point? Also, is it advisable to use Characteristic.Notify in a deep sleep scenario?

Thanks.

Server code:

...

ANSWER

Answered 2020-May-15 at 06:24

Please see answers to your questions below:-

If I want to implement deep sleep functionality to the server, what would happen to the client? Does the client also have to reset at some point?

No the client does not have to reset, but you may have to reconnect to the server because in deep sleep the BLE connection is lost. If you want the connection to be established automatically as soon as the server wakes up, then you have to update the client code so that it continuously attempts to reconnect to the server. This way, as soon as the server wakes up, the client would connect to it and continue receiving notifications.

Also, is it advisable to use Characteristic.Notify in a deep sleep scenario?

In deep sleep the CPU will be off, therefore you will not be able to send notifications in this state. In this mode you will only be able to wake up the CPU through a timer or an external peripheral (e.g. touch pins). Please see the link below for more information:-

I hope this helps.

Source https://stackoverflow.com/questions/61811536

QUESTION

Parse Bluetooth ble.write json string on Arduino

Asked 2020-Mar-01 at 04:19

I am attempting to parse a JSON string coming into the Arduino from my phone. I am fairly new to C++ and these libraries so I am having some issues. Below is the code I have so far. Everything works except for the part where I am trying to set json[] to the value coming from the phone. It is a valid JSON and is returned to the console shown below.

Error: initializer fails to determine size of 'json'

JSON Received from phone:

...

ANSWER

Answered 2020-Mar-01 at 04:19

According to the documentation of desrializeJson(), the second input argument accepts char* with zero-copy; and, const char* or const std::string& with duplication.

Prototypes in the documentation (only the relevant ones):

Source https://stackoverflow.com/questions/60470018

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install BleUtils

You can download it from GitHub.
You can use BleUtils like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the BleUtils component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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