Questions tagged [bluetooth-gatt]
The Generic Attribute Profile (GATT) defines the way that two Bluetooth Low Energy (BTLE) devices transfer data back and forth using concepts called Services and Characteristics.
bluetooth-gatt
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BLE Omron BP Monitor has it's Custom Service and Characteristics
I am trying to connect with an Omron HEM-7140T1 BLE BP Monitor device. Problem is that this device doesn't offer standard BP service "1810" but offers it's custom Service and Profile . ...
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BluetoothDevice#getName() return null in Android 14 while retrying pairing after canceling first pairing request
BluetoothDevice#getName() return null on Android 14
While trying to connect with below steps, Getting null value for BluetoothDevice#getName()
Scan Bluetooth device
Cancel pairing request
Retry the ...
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Read Characteristic with MBED OS BLE GattClient
I'm working to read a characteristic from gatt server using mbed os but not very successful. I'm able to make it scan and connect to the gatt server but I'm stuck there. I read the mbed ble example ...
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With Bluetooth LE GATT service, is processing Characteristics and Descriptors sequentially an acceptable way to go?
I'm writing a service that connects to a bluetooth LE device.
I am iterating through the various services looking for the ones I'm interested in.
At the moment I'm looking at battery services.
Some ...
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Does the BLE protocol guarantee write-ordering across multiple characteristics in a service?
If a BLE service contains multiple notification characteristics that a GATT client has expressed interest in, does the BLE protocol make any strong guarantees about the order the GATT clients receive ...
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Receive simultaneous notifications for multiple characteristics from a single server
I am trying to reproduce an Android app project without much Android development or Bluetooth experience. In the code, the original author collected data from two characteristics (coming from a single ...
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Parsing H4 'Set Volume' Packet - Unable To Figure Out Volume Bytes
I'm in the process of reverse engineering the Creative Soundblaster G3 (Bluetooth controlled USB DAC) to have more/better control of the volume & EQ as well as external integration into apps. I've ...
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warning: [deprecation] getValue() in BluetoothGattCharacteristic has been deprecated in the code: byte[] countByte = characteristic.getValue();
I am updating my current code to API33, i got the warning- warning: [deprecation] getValue() in BluetoothGattCharacteristic has been deprecated
byte[] countByte = characteristic.getValue();
In the ...
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How do I make a GATT server's read characteristic editable?
Im working on making a GATT server that can be connected to by a client application, that will eventually send data to said client. the way I understand it, is that the only value the client can see ...
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How to show my BLE device battery percentage on iPhone battery app?
I am developing an iOS app for non apple wearable device which communicates through BLE technology. I got the battery percentage from the BLE device though some characteristic id, but is there any way ...
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Building a Smartwatch with Esp 32 and BLE
im currently working on an esp32 based smartwatch , i want to use BLE to connect to my android device and fetch the incoming notifications and display them.
i have a working android app with a ...
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Android 14 Service Discovery Issue
I have a .jar library that I am using in another project.
Something has changed between Android 13 and Android 14 that is causing this issue.
In my library I scan for and connect to a BLE device.
...
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Simultaneous BLE GATT Client & Server issue on when client initiates disconnect
I am working on the app for a dedicated device running Android.
The app starts GATT Server with a custom service and characteristics in order to provide communication between current device and ...
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BLE Cycle Trainer Write Characteristic UUID 2AD9 - How to adjust resistance based on what's happening in game?
Hello overflow friends,
I'd be eternally grateful if one of the resident BLE geniuses on this forum wouldn't mind helping me. I've been trying to build a little cycling game in c# and so far I've ...
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WebBluetooth GATT, filter by custom service UUID
I'm unable to filter by Service UUID using the bluetooth.requestDevice Web Bluetooth Gatt API
My device named MyDevice1 with the service UUID: "607cdd4f-32aa-47da-8209-18f12012e3a4" which ...
