RSS
Sort by » date activity ▼ answers views votes

5,858 questions

27
views
no
votes
1
answer
Last activity 2015-03-03 23:32:47 +0100 by ta2

How to close NRF51 connection using win_0.3.0-alpha API

Hi,

I compiled the nrf_heart_rate_collector. Apparently, this program only works once, between each run, "remote device" and USB dongle has to be resetted (unplugged from USB connector and plugged again).

Apparently connection is not closed correctly.

Program's main function ... (more)

208
views
5
votes
2
answers
Last activity 2015-03-03 20:45:50 +0100 by Krzysztof Loska flag of Poland

Keil v5 & nrf_SoftDevice 7.1.0-3 [closed]

Hi,

I am new to Keil and nrf51 development so please forgive me if I ask a stupid question.

I have followed the steps from the user guide and installed Keil (version 5.14), SEGGER and the nrf51 SDK. Then ... (more)

9
views
no
votes
no
answers
Last activity 2015-03-03 20:14:17 +0100 by Jean-Louis Bonnaffé flag of France

sd_softdevice_enable() under gdb causing reboots

Hi,

I'm developing on a custom nrf51822-based board, and using the s110 softdevice, version 7.0.0. With JLinkGDBServer and the toolchain's gdb, I can debug softdevice-less applications normally.

Problems arise when I build my apps on top ... (more)

4k
views
8
votes
5
answers
Last activity 2015-03-03 19:57:43 +0100 by Chris Hodapp

Can I directly start programming a nrf51822 breakout board

Hi guys, I want to know if it is possible to get started on developing applications for nRF51822 without using the evaluation kit. I want ot have a couple of breakout boards made and buy a debugger to flash the ... (more)

9
views
no
votes
no
answers
Last activity 2015-03-03 18:59:55 +0100 by Torsten Robitzki

why are there 8 bits to select the analog input

I'm just reading the documentation regarding the analog digital converter and wonder why there is one bit in the configuration register for every analog input. What will happen when I set more than one bit in CONFIG.D?

cheers Torsten

15
views
1
vote
1
answer
Last activity 2015-03-03 18:57:00 +0100 by Adam

Why is UUID in wrong order?

Hi,

This time I am trying to work out the UART example.

I got it to the point where it is advertising, but the advertisement is wrong.

When I check with an Android phone, the advertisement data is all the ... (more)

94
views
3
votes
2
answers
Last activity 2015-03-03 18:23:42 +0100 by Matt Barr

softdevice update

First, many thanks for the great DFU recipe in the latest SDK!

I've ported OTA DFU to the IAR tool chain for both s110 and s310. I can flip back and forth between the two softdevices by updating from ... (more)

64
views
no
votes
no
answers
Last activity 2015-03-03 18:12:34 +0100 by Jeffrey Tang

Concurrent broadcast in S130 with both central and peripheral connections

We are using S130 v0.9 stack,

and when BLE device A is connected as peripheral of iphone

and central of BLE device B at the same time

iPhone --> A ---> B

Device A cannot stop or start advertisement

The err_code ... (more)

5
views
no
votes
no
answers
Last activity 2015-03-03 18:00:31 +0100 by Vasco Tesi

nRF51822 supply voltage range

in nRF51822 product specification a maximum absolute rating of 3.9 Volt is reported, while in electrical specification the maximum voltage is 3.6 Volt. The question is : can the chip withstand , and operate at , a voltage slightly above 3 ... (more)

4
views
no
votes
no
answers
Last activity 2015-03-03 17:48:53 +0100 by Cyril Hruscak

S130 connection loss

Hi, I'm trying out S130 SoftDevice. I have 1 device with S110v7 which acts as a peripheral. 2nd device contains S130 0.9 (I've based my code on S120 multilink central example).

It works fine. I can connect ... (more)

8
views
no
votes
no
answers
Last activity 2015-03-03 16:55:46 +0100 by Vicnet

nRFGo Studio > v1.14 - not started

Hi, Since version v1.16, nRFGo Studio don't start. The installation is correctly done, but when I launch software nothing occured.

The version 1.14 launch correctly. I'm working on nRF51 and I would used the newest version ... (more)

3
views
no
votes
no
answers
Last activity 2015-03-03 16:54:19 +0100 by leo b.

Cannot discover nRF51 DK board through ANT

Hi,

I am trying to develop an ANT+ application using the nRF51422 chip with S210 Softdevice. To prepare myself for the task, I am studying how the ANT+ works using the nRF51 Development Kit PCA10028 v1.1.0. I am ... (more)

28
views
no
votes
2
answers
Last activity 2015-03-03 16:35:08 +0100 by K. Townsend

New SDK for S110 v8.0.0? [closed]

S110 8.0.0 was just released allowing a larger ATT table, which is something we need, but is there a corresponding SDK update for this SD before we spend the time upgrading out codebase? There are a number of ... (more)

147
views
no
votes
1
answer
Last activity 2015-03-03 16:31:36 +0100 by Stefan Birnir Sverrisson flag of Iceland

Can I communicate from one BLE microcontroller to another with nRF8001?

Hey All,

I am working on a project that involves a Redbear Labs Blend as a sensor platform, then transmits the data to a dfrobot Bluno over nRF8001 BLE. I'm still new to both chips and naive to their ... (more)

26
views
2
votes
1
answer
Last activity 2015-03-03 16:11:24 +0100 by Stefan Birnir Sverrisson flag of Iceland

Reading data from tmp102 and nrf51822 ek

I am a very beginner on embedded field.

I have a nrf51822 and tmp 102. I follow this direction on mbed site

link text

and it's actually working. The code provide is C++, simple and easy to understand. The ... (more)

46
views
1
vote
1
answer
Last activity 2015-03-03 15:21:39 +0100 by Stefan Birnir Sverrisson flag of Iceland

nRF Beacon does not build on Android studio

I try to use Android studio to build nRF Beacon project,but it didn't work ,and there are several error . the error is

Error:(50, 35) No resource found that matches the given name (at 'layout_width' with value '@dimen ...

(more)

38
views
no
votes
1
answer
Last activity 2015-03-03 15:00:39 +0100 by Stefan Birnir Sverrisson flag of Iceland

Battery percentage measurement fluctuation

We are having some trouble with battery percentage measurement. The battery percentage being reported, keeps fluctuating. Earlier the fluctuations were as large as 3% to 100%.

After averaging across three points, the fluctuations are between 45% and 90%.

We are ... (more)

31
views
no
votes
no
answers
Last activity 2015-03-03 14:59:14 +0100 by Paul Yip

Disconnected and re-discover on iOS8 with two device paired

Hi,

I have paired two 51822 watches on iOS 8 on iPhone 6 plus. I found that when two watches moved far away and move back to the phone. The phone will not connect to either watches. It is 100 ... (more)

25
views
1
vote
1
answer
Last activity 2015-03-03 14:33:28 +0100 by Stefan Birnir Sverrisson flag of Iceland

Linker Error L6406E and L6406E

Hi,

I recently made some changes to the code and noticed the following errors for the first time. Error: L6406E: No space in execution regions with .ANY selector matching main.o(.data). Error: L6407E: Sections of aggregate size 0x20 bytes ... (more)

44
views
no
votes
2
answers
Last activity 2015-03-03 14:19:13 +0100 by John DeWitt flag of United States

A question about ota

Hi, all! I am rencently studying ota,and that is what I have done:

  1. Program softdevice 6.0 into my nrf51822 chip.
  2. Program bootloader(version in SDK5.2) into my nrf51822 chip.
  3. Use Nrf_TooBox app to upload an application into ...
(more)

27
views
no
votes
1
answer
Last activity 2015-03-03 14:15:58 +0100 by Stefan Birnir Sverrisson flag of Iceland

NRF_ERROR_NO_MEM

Hi, I have created up to 5 custom services with several characteristics (4 at maximum) each one. They all use the same base UUID. The problem I'm facing now is that when I execute 'services_init' function, the function 'sd_ble_gatts_service_add ... (more)

17
views
no
votes
1
answer
Last activity 2015-03-03 14:15:35 +0100 by John DeWitt flag of United States

Send struct of data

Hi all,

If I want to send a table that contains a structure in each of his cases using sd_ble_gatts_hvx(), can I get it ?
Knowing that the second parametre of sd_ble_gatts_hvx() contains a ble_gatts_hvx_params_t variable, which has the uint8* p_data ...
(more)

33
views
no
votes
1
answer
Last activity 2015-03-03 14:09:29 +0100 by Stefan Birnir Sverrisson flag of Iceland

Master control panel with nRF dongle

hello everyone, I recently purchased the new nRF51 dongle. I could successfully load the blinky example with S110 soft device to it. But it is not working with the HRS example. I could not discover the device using Master control ... (more)

11
views
no
votes
1
answer
Last activity 2015-03-03 13:33:39 +0100 by biospawn

Problems testing the button_radio_example [closed]

Hello

I have the nRF51822EK PCA10001 (V1.0) and PCA10000 (V1.0).

I'm working on a project where i'm going to send data from a custom board over to the PCA10000 dongle, and import the data from the ... (more)

9
views
no
votes
no
answers
Last activity 2015-03-03 12:17:08 +0100 by andrey

Using uuids_more_available

What are the mechanics of using 'uuids_more_available'? Is this list transmitted as a part of advertising data, scan response data, or both? How does the host know that this list has a non-zero elements?

66
views
no
votes
2
answers
Last activity 2015-03-03 11:10:47 +0100 by Annim

How can I interrogate BLE (nRF51822) via COM port ?

Hello everyone,

I have a nRF51822 dev board connected through USB to my PC.

I have connected it to COM5 using Terminal and now I would like to interrogate BLE like we do in Arduino using AT commands, is it ... (more)

17
views
3
votes
1
answer
Last activity 2015-03-03 11:07:20 +0100 by RK

Watchdog not working when in HardFault?

We are configuring the watchdog like this:

// Watchdog
NRF_WDT->CONFIG = (WDT_CONFIG_HALT_Run << WDT_CONFIG_HALT_Pos) | ( WDT_CONFIG_SLEEP_Run << WDT_CONFIG_SLEEP_Pos);
NRF_WDT->CRV = 3*32768;   //ca 3 sek. timout
NRF_WDT->RREN |= WDT_RREN_RR0_Msk;  //Enable reload register 0
NRF_WDT->TASKS_START = 1;

This comes from one of the examples. If ... (more)

19
views
1
vote
1
answer
Last activity 2015-03-03 10:12:04 +0100 by Carles

s130 connections

i am trying to make connections between s130 device and end node which have heart rate service. according to the s130 document once if you press the button 0 it will automatically do connections with end device,but i am ... (more)

33
views
no
votes
2
answers
Last activity 2015-03-03 08:33:04 +0100 by Locky

wait function

Hi

during setup of a peripheral at startup, I need to add some wait periods in between steps of the setup. Is there some function like waitMS(int time) or something, that would make the processor wait during a number ... (more)

402
views
no
votes
5
answers
Last activity 2015-03-03 03:46:23 +0100 by Yokoyama, Atsushi flag of Japan

No Interrupts on nRF51822 w/S110

Hi,

Can I stop interrupts for 2ms in an orderly manner without crashing the S110?

Thanks,

Statistics

  • Total users: 4200
  • Latest user: Sudha
  • Resolved questions: 2833
  • Unanswered questions: 430
  • Total questions: 5858

User menu

    or sign up

Recent blog posts