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21,002 questions

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Last activity 2017-03-31 00:27:34 +0100 by Heath Fisken flag of Netherlands

Buy FX CBD Vape Oil

It does not matter what is injuring you today, chances are very good that the finest CBD oil-can help alleviate your discomfort or bolster the body. A lot of people nowadays are discovering that the medications they have been prescribed ... (more)

1
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Last activity 2017-03-31 00:18:43 +0100 by ypearson

DFU buttonless + stock secure bootloader

I've put on the stock dfu/bootloader_secure on the nrf52 DK.

I've then create a distribution ZIP and upload a blinky app to the DK. That worked fine.

Then I compiled experimental_ble_buttonless_dfu, made a ZIP and uploaded it ... (more)

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Last activity 2017-03-31 00:10:34 +0100 by Ladasky

nRF52 USB-UART broke, half-duplex?

Hi there,

I have multiple PCA10040 boards, and about a year's worth of experience developing code for them. I have suddenly started to have problems with USB-UART connections. Not even Nordic's SDK example code (in ../examples/peripheral/uart ... (more)

14
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Last activity 2017-03-30 22:51:20 +0100 by Gerry

How can I connect two nRF52840 to transfer large data files?

Hello, Would you have application that can support two nRF52840 pairing and transfer arbitrary large data files?

Thanks, Gerry

3
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answers
Last activity 2017-03-30 22:31:07 +0100 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?

9
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Last activity 2017-03-30 22:28:03 +0100 by SRA

Cryptocell and future products vs MicroECC

So... As I understand it, micro-ECC is a free library that lets you create an ECC private key for signing the SecureDFU that Nordic is using.

The nrf52840 has Cryptocell 310 which has ECC hardware.

To the best of my ... (more)

3
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answers
Last activity 2017-03-30 20:37:01 +0100 by ypearson

buttonless DFU sdk12.2 hangs

It appears this example hangs after the following call. Does the experimental 12.2 buttonless DFU work ok?

SOFTDEVICE_HANDLER_INIT(&clock_lf_cfg, NULL);

33
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answers
Last activity 2017-03-30 21:00:12 +0100 by lbehhhh

Example code utilizing softdevice will not work properly with IAR compiled hex

Hello,

I have an issue regarding using IAR tools with the examples provided in SDK v13.

I have:

Issue ... (more)

7
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answers
Last activity 2017-03-30 18:26:07 +0100 by parthee

nRF51822 - arduino beginner

Am beginner of nRF51822, please suggest programming tool and tutorial links.

6
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Last activity 2017-03-30 16:12:36 +0100 by Nobody13

Pstorage functional with deactivated softdevice?

Preface: I am developing a software working with different radio protocols (enhanced shockburst, bluetooth,...). Therefore I implemented uart commands for switching radio protocols.

This means I have to switch softdevice very often on and off. If radio chip is configured ... (more)

16
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votes
1
answer
Last activity 2017-03-30 15:27:03 +0100 by Wojtek flag of Poland

nrf52 removal of 32khz xtal effects

when removing the XL 32Khz xtal what are the ramifications for the product I got the BLE working but what else do I need to look to?

power down issues? fds issues? and any others I can not think of ... (more)

45
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votes
1
answer
Last activity 2017-03-30 15:52:49 +0100 by Quark flag of Taiwan, Province of China

hi , can anyone please tell me on how to read the digital input value from pir sensor in nrf52832..??

Is there any sample code in examples, because am a newbie to this great platform, my objective is to glow an led , when the motion is detected , and also when there is no motion ,led remains in off state

20
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Last activity 2017-03-30 14:45:56 +0100 by waqarahmed

i have run the experimental ble app blinky from sdkand this run successfully ,is there any tutorial available ??? i can't understand the code how its work ??

can any one of you suggest me some tutorial .then kindly give me link

24
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1
vote
1
answer
Last activity 2017-03-30 15:00:14 +0100 by Radosław Koppel

GPIO act incorrectly when building with GCC

Hi,

I connected 74CH595 shift registers to nRF52DK board. When I built and upload my code with Keil everything works just fine, but if I compliled it with GCC and upload with nrfjprog, the 74CH595 cannot act properly. I need ... (more)

8
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answers
Last activity 2017-03-30 13:59:29 +0100 by Nabil

NRF52 - error when trying to send characteristic with custom service

Hello,

I'm actually working with a custom profile generated with Bluetooth Developer Studio. I'have some difficult to send characteristic with the template.

My setup is : - NRF52832-DK - Linux environment - SEGGER-RTT

The fonction(found on tutorial) to send is like ... (more)

8
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answers
Last activity 2017-03-30 13:31:40 +0100 by Valer_I

Meizu M2 IRK not resolved

Hello, I experienced connection issues with Meizu M2 phone. My device is nRF51822 + S110 softdevice. It works perfecty with iPhone and Android 6+ that uses IRK and random private resolvable address but not with Meizu. To reproduce:

  • Connect and create ...

(more)

13
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no
votes
1
answer
Last activity 2017-03-30 18:01:42 +0100 by Moritz Caspar flag of Germany

DFU bootloader fails second update

I have a created a bootloader using the bootloader_secure example in SDK 12.1. Using my own public-private key pair I've created two zip files, signed with nrfutil, one with the application firmware and one with the bootloader itself ... (more)

12
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no
votes
1
answer
Last activity 2017-03-30 13:37:55 +0100 by Jørgen Holmefjord flag of Norway

nrf51822 gpio

hi,

i have two nrf51822 beacons in which one would send data to other over ble.how can i make nrf51822 as central.what are the modifications should i do to make it central.will existing central examples work?

thank you

12
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answers
Last activity 2017-03-30 12:58:50 +0100 by zcmm

CONNECT_REQ PDU can not receive

hi,all i use use dongle as packet sniffer.when the phone can not connect my device,the dongle can not receive CONNECT_REQ PDU.if the phone can connect with my device,the dongle can receive CONNECT_REQ PDU; QS1:why ... (more)

7
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answers
Last activity 2017-03-30 12:06:12 +0100 by king001

app to app dfu

HELLO, I want using sdk5.2.0/s110 6.0.0 update app in app.I only find BootLoader->app.How can I achieve it. eg:I use my phone connect 51822 board,then send a command to board,board ... (more)

12
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no
votes
1
answer
Last activity 2017-03-30 12:57:37 +0100 by Vehring

Eclipse/gcc error: _built/nrf52832.o No such file or directory

Hello.

Due to expanding code size because of the peer manager i m forced to move to gcc and Eclipse. So far according to the tutorial i`m proceeding fine.

But, after importing my project into eclipse it turned out ... (more)

13
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no
votes
1
answer
Last activity 2017-03-30 13:16:59 +0100 by Kristin flag of Norway

connecting procedure for nrf51822 with android via bluetooth

i am troubling in connection with nrf51822 with android via bluetooth.can you please tell me the procedure of how to connect nrf51822 bluetooth with android phone. i have tried various examples but i am faling to do the connection.

26
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2
votes
1
answer
Last activity 2017-03-30 13:48:15 +0100 by Kristin flag of Norway

Multiple definition of `SWI0_EGU0_IRQHandler' [closed]

Hi all, I have an Eclipse project in which I want to transfer packets of data bidirectionally between ESB and UART. The makefile includes both nrf_esb.c and app_timer.c (needed by nrf_serial.c), with SDK 13.0.0, and ... (more)

18
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no
votes
1
answer
Last activity 2017-03-30 11:42:09 +0100 by Wojtek flag of Poland

Is 32KHz xtal required for BLE w/ SD132 v2.3

nRF52 V1.01 DK I can unhook the 32Kz (XL1) and the BLE stops transmitting

Is that due to the SD? Is there a way around that as I would like to use those pins for another i2c bus?

19
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2
votes
1
answer
Last activity 2017-03-30 11:31:40 +0100 by endnode

app_uart_flush, how much time does it take to erase the FIFO??

Hello! anyone knows how much time does need the app_uart_flush to erase the FIFO?

17
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no
answers
Last activity 2017-03-30 11:08:48 +0100 by pallavi

how to connect nrf51822 bluetooth with android phone bluetooth

i want to connect nrf51822 with android phone via bluetooth. can you tell me which code i have to burn from sdk of nrf into the nrf51822.what are the requirements for making bluetooth connection. i have tried ble uart ... (more)

55
views
4
votes
2
answers
Last activity 2017-03-30 17:15:57 +0100 by ToTo

Urgent!!!!

My app works well when working with Master control pannel, but when I use nRF Connect (Android App of Nordic) I have a disconnection without any reason. Especially when I do enable services!!

My nrf51822 is the peripheral.. Any idea ... (more)

14
views
no
votes
1
answer
Last activity 2017-03-30 11:00:24 +0100 by endnode

on_data_length_update_request_evt

Hi,

upon connection I get these messages via RTT:

nrf_ble_gatt:DEBUG:Peer on connection 0x0 requested an ATT MTU of 185 bytes. nrf_ble_gatt:DEBUG:Updating ATT MTU to 23 bytes (desired: 23) on connection 0x0.

Does anybody know what they ... (more)

22
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2
votes
2
answers
Last activity 2017-03-30 14:05:15 +0100 by Aurabindo

GCC linker error - SSD1306 library

Hi,

I'm trying to make https://github.com/monpetit/nrf52-spi... to compile with GCC (linux). So far I've managed to get it compiled, but linking fails:

mkdir _build
Compiling file: nrf_log_backend_serial.c
..<snip>..
Assembling file: gcc_startup_nrf52.S
Compiling ...
(more)

16
views
no
votes
1
answer
Last activity 2017-03-30 08:51:57 +0100 by Jørgen Holmefjord flag of Norway

Looking for compact NRF BLE module with accelerometer

Hi, I am currently working on a prototype with Silicon Labs Thunderboard sense. I am looking for a replacement product that has NRF BLE module. All I need is a BLE module that is less than ~2inchx1inch and has an ... (more)

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