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Questions tagged [gatt]

GATT: Generic Attribute Profile

Provides profile discovery and description services for Bluetooth Low Energy protocol. It defines how a set of ATT attributes are grouped together to form services.

See Bluetooth Profile

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Connect iOS device to Bluetooth device with SPP

I'm working on one watch which shows iOS device notification like.. Display Installed app notification Display Call notification Display Message notification.. etc I have read some articles and came to know about GATT and ANCS, and this two itself…
RayofHope
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how to implement a specific GATT profile to a bluetooth BLE module

I am having a small query regarding the GATT profile implementation. That is … how can i implement a particular GATT profile on bluetooth 4.0 module..? Specifically bought a CC2541 BLE module and how can i implement a GATT profile in it,specifically…
ferraro
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BLE 4.0 autoconnect & scanning

I am trying to make an app that toggles LED connected to a BLE device. when I try to scan device and connect to the service it aint working. The variable "mBTdevice" always shows a nulll value using on LE Scan here is my code.java file package…
Xauð Mùghal
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Interpreting BluetoothGatt Value from Light Sensor

I am writing an app which is receiving values from a Light Sensor of a BLE device. I am trying to determine what it is that I am receiving. I am trying to get the Lux value which is provided by the sensor, but am concerned that it needs…
user3705399
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LightBlue not forgetting UUIDs

I have since changed the UUIDS for my pimrary service, yet LightBlue refuses to acknowledge the change. If I use a new phone, I notice the UUID does change, however if I change it again, LightBlue the new phone is now stuck on the previous UUID. If…
friartuck
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Howto connect to Bluetooth LE Device on Android (Platform 19)

I am working with a BT Low Energy capable baggage alert device (Link) and have successfully paired it with my Nexus 7. Following the docs I now would like to connect to the device using the following code: private BluetoothGattCallback callback =…
fabian
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Android - Unstable Bluetooth LE (GATT)

Now i write program for communication devices and telephone - protocol Bluetooth GATT (Android 4.3 HTC ONE). Faced with the problem of a stable connection to the phone. I created a service that connects required devices (as in the example from the…
gc986
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BLE Answer after writing over GATT in Android

Is there a way to come an answer after writing a hex command via Bluetooth Low Energy in android? I write the hex command over gatt, this is my write function: /* set new value for particular characteristic */ public void…
user3181654
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Bluetooth LE Gatt connection Android 4.4 to read real-time RSSI

I am trying to write a small android app (4.4) which searches for several Bluetooth LE devices. Once it has found each device it needs to connect to it and then continually read the RSSI of each device as quickly as it can. I have been trying to get…
Chris Hughes
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Bluetooth Low Energy costum Service device discovery and development for Windows 8.1 Store Apps

I started building Windows Store App, but after I discovered that my device is not discovarable on Windows 8.1 compared to Windows 7 and IPhone on which I can detect this Blutooth LE device. I am using following PrimaryServices: Generic Access…
Roman Gorislavski
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Is there an authentication in the Bluetooth BLE standard? (reverse engineering trouble)

In short When I connect to a BLE device with an unofficial app/program, GATT commands are not executed by the device. Does the app need to run some king of authentication with the device? (a Bulb) My reverse engineering story I am trying to…
albinou
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How to read two BLE characteristics of two services at the same interface page?

I am trying to manage my temperature service and LED service of my BLE device at the same Android interface. However, whenever I try to turn the LED on, the app dies, and I don't know how to fix this (I am not good at either Java or BLE). I have all…
Natalie
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What is the best solution to pass BLE Services and Characteristics from Fragment to Activity to work with?

Together I got the Services and Characteristics after I connected to my BLE device. With this code: if(gattServices == null)return; //loops through available GATT SERVICES for(BluetoothGattService gattService : gattServices){ uuid =…
Fab
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android native crashed,the phone record the google-breakpad report,but how to read it and find the reason?

07-07 05:37:54.712 24137 32072 F google-breakpad: -----BEGIN BREAKPAD MICRODUMP----- 07-07 05:37:54.713 24137 32072 F google-breakpad: V AndroidWebView:57.0.2987.132 07-07 05:37:54.713 24137 32072 F google-breakpad: O A arm64 04 aarch64…
Humin
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How to do pairing with BLE device after GATT connection

How to do pairing with BLE device after GATT connection because I have to do it manually , then I am able to get response from BLE device . bluetoothComponent.gatt = tempdevice.connectGatt(getApplicationContext(), false, …
RAJAT SINGH
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