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245 questions

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Last activity 2017-05-24 12:20:25 +0200 by Pradeesh

Android-enable notification client side, CCCD & UUID.

Hi All,

I have a problem to enable notification on my Android phone, i followed the tutorial on android web page (section bluetooth low energy) but my app crash, i have this error :

W/BluetoothGatt: Unhandled exception in callback
                                                                              java ...
(more)

48
views
3
votes
2
answers
Last activity 2017-05-23 08:27:45 +0200 by trdop

ANCS Code base (bonding) with NUS and strange behaviour with nRF Toolbox

Hello the Nordic Team,

I come here after a lot of research and testing and do not understand what is going on in my program. (is it Embedded or iPhone nRF Toolbox side ?)

I took the ANCS code ( nRF5_SDK_12.2 ... (more)

53
views
1
vote
1
answer
Last activity 2017-05-22 12:53:31 +0200 by Kristin flag of Norway

Is it possible to know whether advertising packet is connectable or non connectable in Android?

Hi,

Is it possible to know which type of advertising packet is being advertised by the slave i.e whether it is a connectable or a non connectable advertising packet by the master device?

41
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no
votes
no
answers
Last activity 2017-05-16 10:30:20 +0200 by Sébastien Schiesser

OTA firmware update

Good morning,

Based on different articles, I set up a nrf52832 with S132 3.1.0, the secure bootloader found in "SDK_12.2.0/examples/dfu/bootloader_secure" and the buttonless dfu ("SDK_12.2.0/examples/ble_peripheral/experimental_ble_app_buttonless_dfu") with some bugfixes ... (more)

56
views
no
votes
no
answers
Last activity 2017-05-14 11:55:20 +0200 by san

register with gatt stack failed Error BLE android

My android app give me this "register with gatt stack failed" error on Samsung S7 marshmallow. The scenario is that I am working with 21 BLE peripherals (nrf52). I scan available devices and then connect => write data => disconnect device one ... (more)

52
views
no
votes
no
answers
Last activity 2017-05-13 01:40:26 +0200 by yoshimura

HID descriptor

Hello,

I am using HID mouse/keyboard examples from SDK to learn creating custom HID device.

Besides using four buttons on EVK to simulate motion action. I would love sending zooming in/out actions from custom devices to android devices ... (more)

59
views
1
vote
1
answer
Last activity 2017-05-12 16:36:15 +0200 by run_ar

How to send to BLE device AE A7 04 00 05 09 BC B7 command ?

Hi all. I am sending to BLE device AE A7 04 00 05 09 BC B7 command, getting status 0 ( success ), but do not get any updates or notifications from BLE at all. So am I doing something wrong ? Please ... (more)

37
views
1
vote
1
answer
Last activity 2017-05-08 11:41:34 +0200 by Moritz

Android Blinky example queue characteristic read

Hi,

this is not a question about the nRF but about Android programming. Hope some of you can help me anyways. I modified the android part of the nRF Blinky example https://github.com/NordicSemiconducto... to fit my needs. It ... (more)

72
views
no
votes
2
answers
Last activity 2017-05-05 09:25:10 +0200 by Hephaestus

Android Template App: Problems with reconnection

We are using the Android nRF toolbox v2.4.0 and have successfully implemented the Template app. The app will reliably connect with our device and functions well. The only problem is when we disconnect.
After a successful connection and ...
(more)

45
views
no
votes
1
answer
Last activity 2017-05-05 09:16:32 +0200 by Kristin flag of Norway

Android app: Sending connection status to Activity

We have successfully implemented the Template app on Android. However, the architecture of the multiple services and layers is somewhat opaque. Three questions:

  1. How does one send the Battery level to the MainActivity.java?
  2. How does one send the Connection ...
(more)

45
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no
votes
no
answers
Last activity 2017-05-04 20:07:50 +0200 by Hephaestus

Android: Trouble with reconnect [closed]

We are using the Android nRF toolbox v2.4.0 and have successfully implemented the Template app. The app will reliably connect with our device and functions well. The only problem is when we disconnect. When the Connect button is ... (more)

39
views
no
votes
1
answer
Last activity 2017-04-26 14:37:42 +0200 by Prasad

NRF Connect: Device doesn't disconnect after bonding

I have created a BLE peripheral device using nrf51822. I have used sdk12.0.0 with soft device 130 and I am using NRF connect mobile app to test my device.

When I connect to my device and bond to ... (more)

48
views
no
votes
no
answers
Last activity 2017-04-24 12:30:14 +0200 by Vivek

Source code needed for ble Connection, RX and TX services.? [closed]

I have used following sources for my application:

  1. profile: -BleManager, -BleManagerCallbacks, -BleProfileService
  2. uart: -UARTService -UARTManager, -UARTManagerCallbacks, -UARTInterface

The above source code i have taken from nRF-Toolbox . So i wanted to know is these source are enough for ble Connection, RX ... (more)

101
views
no
votes
1
answer
Last activity 2017-04-21 15:59:14 +0200 by Jørgen Holmefjord flag of Norway

Android app

Hi, i'm currently using two NRF52 (1 central and 1 peripheral) using the ble_app_blinky and the ble_app_multilink_central.

I would now like to connect my Android phone with the Central in ordrer to control several NRF devices.

How can I ... (more)

860
views
no
votes
1
answer
Last activity 2017-04-18 16:28:05 +0200 by Bjørn Spockeli flag of Norway

Cannot send bytes from Evothings app to Blend Micro...

I am working with a Blend Micro Board (Arduino IDE with RBL_nRF8001 sdk), using Evothings. Using the RedBearLab Simple control example I can easily connect to the board. I can receive bytes sent from the boards with ble_write and ble_write_bytes ... (more)

76
views
2
votes
1
answer
Last activity 2017-04-12 11:50:22 +0200 by Hung Bui

Android BLE : the callback function 'onCharacteristicRead' never called

I write a code for read the temperature via BLE. The code is modified from the example "android-BluetoothLeGatt-master". But the CallBack function onCharacteristicRead for the function readCharacteristic is not be fired and the app can not read any value. In ... (more)

47
views
no
votes
no
answers
Last activity 2017-04-07 14:09:42 +0200 by pallavi flag of India

Not able to compile Android-nRF-Toolbox android code with api 19

I am trying to use nordic nrf51822 and transreceive data through ble_app_UART and (Android-nRF-Toolbox) https://github.com/NordicSemiconducto....

But i am not able to compile the Android-nRF-Toolbox android code with api 19 since my mobile works on android 4.4 ... (more)

47
views
no
votes
1
answer
Last activity 2017-04-07 13:20:04 +0200 by Petter Myhre flag of Norway

Android vendor HAL for nRF52832

Hello,

I'm evaluating the feasibility of using the nRF52832 chip on a board with a microprocessor running Android and I like to know if Nordic has released or is planning to release an example Android Bluetooth HAL for the ... (more)

114
views
1
vote
1
answer
Last activity 2017-03-28 10:12:26 +0200 by Tostikoning

iOS compatibillity with SDK13

Hi,

I migrated an nrf52832 s132 application from SDK12.2.0 (sd v3) to SDK13 (sd v4.0.2). On the iPad and iPod Touch the NRF Connect app does not discover the services I added. However on Android the ... (more)

81
views
1
vote
no
answers
Last activity 2017-03-28 08:04:54 +0200 by Anjali flag of India

What is the MIN_CONN_INTERVAL accepted for connection to Android 6+

Hello,

I am using nRF UART v2.0 android app and I have added my custom logic above it. I am using this phone as the central device and nrf52 with sdk 12 as the peripheral device. All my code ... (more)

693
views
no
votes
4
answers
Last activity 2017-03-27 12:37:45 +0200 by parshant

How to download Android code [closed]

I have purchased nRF51822 Evaluation Kit. So I should be able to download Android code. Correct?

But when I go to http://www.nordicsemi.com/eng/Product...

Then I see that red lock. I am not able to download it ... (more)

32
views
no
votes
no
answers
Last activity 2017-03-27 09:10:04 +0200 by David

HID reconnection problem

I'm trying to save power on my HID keyboard application by disconnecting the Bluetooth link after some time of inactivity. As soon as there are keystrokes to send, the device advertises again and sends the pending values.

Generally I ... (more)

47
views
1
vote
2
answers
Last activity 2017-03-23 15:24:49 +0200 by Maxim flag of Russian Federation

Deny connection on wrong application

Hi,

I'm working on a Custom Android app which connect to my NRF52 without any security.

This App is based on the UART demo App for Android, but I want that only my App will be able to connect ... (more)

81
views
no
votes
2
answers
Last activity 2017-03-20 09:58:47 +0200 by etienne

GATT CONN TIMEOUT after rejecting connection parameters update

Hi folks,

We got a weird behaviour with our nrf51822(SDK 12.2.0, s130) device. we have built a low power application with following parameters: 1. MIN_CONN_INTERVAL 200ms 2. MAX_CONN_INTERVAL 400ms 3. SLAVE_LATENCY 3 4. CONN_SUP_TIMEOUT 6s

One of ... (more)

42
views
no
votes
1
answer
Last activity 2017-03-07 14:25:16 +0200 by Kristin flag of Norway

BLE_GAP_CONN_SEC_MODE_SET_ENC_WITH_MITM hanging on mobile app

Dear All, I have developed a BLE system in which nRF52832 is being used as a peripheral and central concurrently. I am also using BLE_GAP_CONN_SEC_MODE_SET_ENC_WITH_MITM property on few characteristics to enable passkey access to those characteristics. I tested my system ... (more)

131
views
2
votes
2
answers
Last activity 2017-03-05 10:35:40 +0200 by Emil Lenngren flag of Sweden

How do I resolve a characteristic write failure on Android & nRF51?

Hi all,

I am trying to get an Android Nexus 5X app to work with an NRF chip, and facing some problems, specifically with writing to a characteristic. Really hope to get some help.

Specifically, I am trying to set ... (more)

105
views
4
votes
1
answer
Last activity 2017-02-26 11:17:59 +0200 by endnode

How to get device details of BLE devices seen by NRF52?

My setup is a Android phone, Nordic NRF52, and random BLE devices in the area. What I want is, the Android NRF-UART app connects to the NRF52 and the NRF52 sends information about the BLE devices it sees around the ... (more)

40
views
no
votes
1
answer
Last activity 2017-02-22 11:20:17 +0200 by Hung Bui

Android terminal for nrf51

I have BLE400 extended board for nrf5. It has cp2102 on board from Silicon Labs. I installed drivers for mac and can see NRF_LOG_INFO via terminal. It would be great to have the same on my android tablet (Samsung sm-t355 ... (more)

127
views
no
votes
2
answers
Last activity 2017-02-21 11:39:48 +0200 by awneil

How to log data in Hexadecimal format over nRF Toolbox(UART) android application

Hi,

I'm working on accelerometer + BLE application. My current configurations are nrf51822 and LIS3dh accelerometer chip, Protocol TWI, Softdevice 110, BLE service type is ble_nus_init_t, Android application is UART sub app in nRF Toolbox. At this stage, I can ... (more)

1k
views
2
votes
2
answers
Last activity 2017-02-03 08:08:37 +0200 by Rish

Trying to set BLE device on DFU mode - Get error status 253 on onCharacteristicWrite function

Hello,

I'm trying to set my device on DFU mode by an android mobile application without success. I'm working with nrf51822, sdk10, softdevice 8.0.

I subcribe to the DFU Control Point characteristic (Activate Notification). But when I ... (more)

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