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257 questions

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Last activity 2017-07-20 11:56:40 +0200 by levshkatov

Can't connect Android to nRF52832

I'm trying to create a connection between Android 6.0 and nRF52832. I created a service, like in tutorial, added it's uuid to adv packet (I seeit in nRF Connection). I can connect to it using nRF Connection ... (more)

32
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no
votes
no
answers
Last activity 2017-07-18 16:31:13 +0200 by paula

setBeaconLayout on Android-Beacon Library

Has anyone successfully used the Android-Beacon Library to detect the nRF51822 Beacon on and Android application? I tried several different layouts but I just can't detect it.

public class MainActivity extends AppCompatActivity implements BeaconConsumer {

protected static final String TAG ...
(more)

45
views
1
vote
no
answers
Last activity 2017-07-13 21:44:48 +0200 by Sebastian van Wickern

Android LE Connection Update terminates with Reason Connection Timeout

I'm trying to figure out why "some" (as in not all of them) Android Devices drop my Bluetooth Low Energy connection (to an NRF52 which I don't think is the problem) after a few seconds.

The behavior within ... (more)

94
views
3
votes
2
answers
Last activity 2017-07-13 02:33:11 +0200 by Youngjun

nRF52832 connection problem with some android device

Hi, I'm using nRF52832 with sdk 13.0.0(softdevice 4.0.2). I had trouble to connect nRF52 and some android 7.0(or upper version) smart device. I tested samsung galaxy tap 10.1 A6 (android 7 ... (more)

17
views
1
vote
no
answers
Last activity 2017-07-10 05:04:42 +0200 by runninghorse

An andoid phone connect to multiple ble devices

In my project, an android phone is needed to connect to two ble devices. All my ble devices are nrf51822. The android phone can connect to and receive data from every device respectively, but can't work when connecting to ... (more)

61
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no
votes
1
answer
Last activity 2017-07-06 11:25:21 +0200 by Bjørn Spockeli flag of Norway

what is serviceUUID and charactersiticUUID

i'm using ionic2 framework with BLE plugin to connect nordicsemi devices. i can scan and see the list of devices and also connect to the device , but for reading and writing on device i need serviceUUID and characteristicUUID , below ... (more)

61
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no
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no
answers
Last activity 2017-06-29 08:49:34 +0200 by Akinobu Yokawa

NUS server on Android

I am developping NUS server(Peripheral) on Android. Central is ble_app_uart_c on nRF52832. In this case, service discovery cannot be completed. According to the console log, the log "APP:INFO:Discovery complete." in ble_nus_c_evt_handler() is not printed. On the other ... (more)

46
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no
votes
1
answer
Last activity 2017-06-12 18:48:31 +0200 by TheRaven

Auto-connection on the nRF Blinky app

Hello,

I downloaded the nRF Blinky app (for Android) here : https://github.com/NordicSemiconducto...

I'm looking to modfy the code to have an auto connection. For this, I would like to go directly on the second page, and do ... (more)

47
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no
votes
no
answers
Last activity 2017-06-09 07:53:59 +0200 by Youngjun

mtu size error [closed]

● device : nRF52832 ● sdk : 13.0.0 ● softdevice : 4.0.2 Hi, I have a problem with change mtu size. I changed mtu size in sdk_config.h, but android application can't read mtu. So, i modified ble_stack_init() function in main ... (more)

42
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no
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no
answers
Last activity 2017-06-07 11:58:13 +0200 by AD1170

Extend the DFU library

Hi, in want to extend the DFU library (Android and iOS) with a function similar to setBinOrHex(). But instead of a filename, i want to give a byte array with the init packet and a 2nd byte array with the ... (more)

65
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1
vote
1
answer
Last activity 2017-05-31 11:23:56 +0200 by Hung Bui

What's the NRF Toolbox (Android App) UART's Connection INTERVAL?

What's the NRF Toolbox (Android App) UART's Connection INTERVAL?

At the SDK12's EXAMPLE's Nordic Uart Service's default connection Interval is

MIN_CONN_INTERVAL = 25ms
MAX_CONN_INTERVAL = 75ms

and this Conn Parameter is conducted by Central side (I Guess ... (more)

85
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2
votes
1
answer
Last activity 2017-05-30 13:03:43 +0200 by Hung Bui

Android delayed notification

Hi, on Android, I sometimes get delayed notifications. I measure realtime data and send them over notification, and I can see data change on Android with approx 1 s delay. Sometimes it helps to connect and disconnect BLE device.

On ... (more)

849
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2
votes
3
answers
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)

77
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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)

70
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?

90
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no
votes
1
answer
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)

173
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no
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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)

94
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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)

88
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)

59
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)

88
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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)

51
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)

55
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no
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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)

70
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)

54
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)

138
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)

864
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)

165
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)

54
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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 [closed]

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)

61
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)

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  • Resolved questions: 9858
  • Unanswered questions: 2925
  • Total questions: 23732