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Last activity 2017-05-23 07:04:02 +0200 by Igor

nRF52 DK - 20ms non connectable advertising interval

Hello, im experimenting around with the nRF52 DK (and nRF51 DK also)

Now I have following setup on nRF52 DK:

SoftDevice: s132 nRF52 v2.0.1

Applicatoin: Example Project from nRF SDK 11.0 (ble_app_beacon)

By the default the interval ... (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?

710
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2
votes
3
answers
Last activity 2017-05-17 08:40:38 +0200 by jwx

Device name too short?

When trying out the ble_app_hrs_freertos example in nRF5 SDK 11.0.0-2.alpha_bc3f6a0, I seem to only get 14-character long device name announcements.

This happens when using components/softdevice/s132/hex/s132_nrf52_2.0.0-7.alpha_softdevice.hex.

I haven't had ... (more)

57
views
1
vote
1
answer
Last activity 2017-05-04 12:07:28 +0200 by Petter Myhre flag of Norway

Advertising Bluetooth LE 128-bit vendor specific UUID

I am wondering what is the logic and magic behind using sdk API's to advertise vendor specific 128-bit service UUIDs. In the "Nordic UART Service" example (nus, SDK12.2.0) there is:

static ble_uuid_t                       m_adv_uuids[] = {{BLE_UUID_NUS_SERVICE, NUS_SERVICE_UUID_TYPE}};  /**< Universally unique ...
(more)

68
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no
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no
answers
Last activity 2017-04-28 08:23:45 +0200 by Milk

Sometimes the android app(especially vivo phone)can not scan the device

The vivo phone sometimes cannot scan the device, There are two devices embedded same program. However,one of them can be scanned,the other one can not. The advertising packet shows as follows: image description

image description

I can not find the wide difference ... (more)

53
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1
vote
no
answers
Last activity 2017-04-26 11:29:07 +0200 by normanfust

nrf51822 not advertising

Hello, I am using an nrf51822 but have no success in advertising. I tried so far to load the ble_app_template from the peripheral examples where I' ve only changed

 #define APP_ADV_INTERVAL                10
 #define APP_ADV_TIMEOUT_IN_SECONDS      0

I tried to load another ... (more)

61
views
4
votes
1
answer
Last activity 2017-04-05 20:31:06 +0200 by endnode

nrf52 advertising multiple services

Hi,

Similar questions have already been posted but they don't seem to fit to my problem...

Basically I want to advertise 3 primary services, starting from the 'experimental_ble_app_blinky' example: the already provided lbs service and two new ones. For ... (more)

42
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no
votes
no
answers
Last activity 2017-04-03 20:52:54 +0200 by Carlos Villavicencio

Is the advertising module removed from docs?

I am programming a beacon, first I had some problems using sd_ble_gap_adv_start() so I changed to ble_advertising_start().

Now I have a problem when compiling:

_build/nrf52832_xxaa_main.c.o: In function `advertising_start':
/Users/.../pca10040/s132/armgcc/../../../main.c:388: undefined reference ...
(more)

41
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1
vote
2
answers
Last activity 2017-03-31 12:52:00 +0200 by aras flag of Canada

Concurrent peripheral and advertising s110

Our nRF51822, S110 device uses concurrent advertising (iBeacons) when connected to the central. Our customer would like to have a variable tx power on the advertising packets only. Is there any way we could do this?

99
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1
vote
2
answers
Last activity 2017-03-29 11:24:37 +0200 by Torbjørn Øvrebekk

Is it possible to change on air address (access address) in BLE advertising

I would like to hide BLE advertising from normal BLE scanner software. And only be able to see such advertising with dedicated scanner.

I was thinking of changing access address from 0x8E89BED6 to something else which would hopefully cause normal ... (more)

70
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no
votes
1
answer
Last activity 2017-03-28 13:17:37 +0200 by Kristin flag of Norway

nrf51822 advertising packet not detected

Hi,

I would like to ask your support for a very unusual problem that I'm facing with a project based on nrf51822.

The board under test is based on nrf51822, SDK12.1, softdevice S130. The nordic example used for ... (more)

53
views
1
vote
1
answer
Last activity 2017-03-22 13:56:30 +0200 by Sigurd flag of Norway

eddystone different advertising interval for each slot

Hi!

I am working with experimental_ble_app_eddystone in SDK 12.2.0 for nRF52. I have seen that the firmware does not support using different advertising inteval for each slot of advertised packets.

Is it right or am I misunderstanding something ... (more)

161
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1
vote
2
answers
Last activity 2017-03-17 16:06:50 +0200 by oneguy

Change advertising data

Simple question:

  • I successfully use ble_advertising_init () with adv_data, scan_data and adv_opts.
  • I include manufacturer data via scan_data.p_manuf_specific_data = &manuf_data. This also works well

Now I want to change my advertising packet by dynamically altering one byte only in my manuf_data ... (more)

180
views
1
vote
1
answer
Last activity 2017-03-09 10:07:10 +0200 by endnode

Advertise on one channel at a time - app_timer problem

Hi DevZone

I want to make a little beacon app, that advertises on channel 37 then waits 700 ms, advertises on channel 38, waits 700 and advertises on channel 39. The below is what i have implemented, yet it doesn ... (more)

101
views
2
votes
2
answers
Last activity 2017-03-07 10:15:56 +0200 by dingari

Trouble with directed advertising

Hello, I've been trying to get directed advertising and auto-connection working on an NRF51822 peripheral.

I'm using SDK V11.0 with SD130 v2.0.1

This is the scenario I'd like to get working:

  • Start normal (fast ...
(more)

79
views
1
vote
1
answer
Last activity 2017-02-28 10:15:20 +0200 by Jørgen Holmefjord flag of Norway

What are nRF52 advertisements exactly good for and what UUID do I have to put?

Hi!

So I managed to create my custom service with one characteristic (a struct with several attribs). I can see it in my app and everything's awesome. Yay.

But in some tutorial and in the sample app I altered ... (more)

477
views
1
vote
1
answer
Last activity 2017-02-23 20:39:13 +0200 by Tamás

NRF52 Sleep Mode and BLE Advertising MBED

Hi all,

first of all I'm new to NRF and BLE applications so I'm truly sorry if some of my questions are very basic and if answer to some of them is already posted somewhere. I probably should ... (more)

71
views
1
vote
1
answer
Last activity 2017-02-10 17:26:51 +0200 by Erlend

ble_peripheral/ble_app_beacon modification, error 0x12

Using Segger Embedded Studio 310i in Linux and SDK12.2.0, I imported the Beacon example project (ble_peripheral/ble_app_beacon) from Keil. Right now I'm trying to make it advertise rather than act as a beacon. I removed what I ... (more)

86
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no
votes
1
answer
Last activity 2017-02-01 15:00:50 +0200 by Sigurd flag of Norway

Disconnect from Peripheral and stop Advertising

Hello ,

I'm working on custom board, I'm trying to disconnect from the Central (Andriod app) when the battery is below certain level and stop re-advertising. Below is the piece of code i used:

/* Disconnect and then disable advertising ... (more)

33
views
1
vote
1
answer
Last activity 2017-01-27 10:34:43 +0200 by Sigurd flag of Norway

nRF UART v2.0 fails if advertising interval is bigger than ~100 ms

In my low-power application I need to use advertising interval of few seconds (two or more) in order to get lifetime of a year with CR2450 battery. However, the Android application nRF UART v2.0 fails to connect if the ... (more)

280
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no
votes
no
answers
Last activity 2017-01-21 05:34:10 +0200 by Philip Odom

Advertising while connected revisited

I'm taking a look at the timeslot API example here, which was linked to in the answer to this question.

Very interesting! As I gather from the documentation for S110 and S130, it is still that case that a ... (more)

153
views
1
vote
1
answer
Last activity 2017-01-18 11:37:59 +0200 by Sigurd flag of Norway

Can I change nRF5 bluetooth advertising interval dynamically?

I would like to dynamically change bluetooth LE advertising interval. I am using nRF51 and nRF52, with SDK's 8 and 12. Is that possible and how to do it?

Our application has kind of "interactive demo" mode needing short ... (more)

49
views
no
votes
1
answer
Last activity 2017-01-12 14:23:34 +0200 by Sigurd flag of Norway

AD flags needed in every advertising packet?

Hi,

to be able to send more advertising data, i want to cyclical switch between different advertising packages. This already works so far. Do i need to include the AD flags in every advertising package or is it enough to ... (more)

26
views
no
votes
no
answers
Last activity 2017-01-12 10:41:12 +0200 by Fabi

Reinitialize BLE Stack [closed]

Hi everybody

I try to reinitialize the Advertising with new parameters after a finished advertising. For example use directed mode, change advertising data and so on. But all I get for the second advertisement is a BLE_GAP_EVT_TIMEOUT with the following ... (more)

115
views
no
votes
no
answers
Last activity 2017-01-12 07:05:01 +0200 by choi

how to Stop advertise when ble are connected

hello.

I want to toggle ble functions when received message from UART.

so when start message come, I start advertising and start services and stop message come, disconnect(if it connected) and stop advertising.

       if(stop)
{
    if(m_conn_handle != BLE_CONN_HANDLE_INVALID) // ble ...
(more)

71
views
1
vote
1
answer
Last activity 2017-01-04 15:28:14 +0200 by Sigurd flag of Norway

Central and peripheral advertising

Hello dear Nordic members,

I got a theoretical question: I want to connect two chips, one as central and the other as peripheral. Is it possible to stop advertising procedures, for both central and peripheral, directly after the connection is ... (more)

219
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no
votes
2
answers
Last activity 2016-12-14 17:04:06 +0200 by Eliot Stock flag of United Kingdom

Timeout for directed slow advertising

In the BLE advertising library, in SDK 11, is the timeout for directed slow advertising specified in seconds, or in number of tries?

Seconds would be more consistent with the timeouts on the other modes (directed fast, fast, slow). But ... (more)

88
views
2
votes
1
answer
Last activity 2016-12-13 15:30:52 +0200 by Eliot Stock flag of United Kingdom

Directed (fast) advertising timeout and scanning at low power

We have an nRF51822 peripheral device that is bonded with one and only one central. The central is always an iOS or Android phone running our app, which is scanning at "low power", whatever that means for each mobile platform ... (more)

133
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no
votes
no
answers
Last activity 2016-12-10 14:35:13 +0200 by Oguz Emre

Ble Mesh and advertising

Hi, What should i do after i load mesh app in "https://github.com/NordicSemiconductor/nRF51-ble-bcast-mesh" adress?i have two board When i download the app,why doesnt advertising exist.i cant see in mobile devices Could u please help ... (more)

61
views
1
vote
1
answer
Last activity 2016-12-07 14:17:12 +0200 by Petter Myhre flag of Norway

Can I set peripheral nrf51 beacon as advertising for only specific masters

Hello,

First of all, I've read the entry below.

https://devzone.nordicsemi.com/questi...

My questions: 1 - If I cannot advertise for only specific masters, how can I provide the visibility privacy of beacons?

2 - In my use-case, I ... (more)

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