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18,235 questions

2k
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36
votes
1
answer
Last activity 2016-12-07 13:22:02 +0200 by Aryan flag of Norway

What are SDK 12.x.0 known issues

On SDK 12.0.0 and SDK 12.1.0 only

Please Do not judge the quality of SDK based on number of entries here. This thread should be considered as part of Nordic effort to maintain the quality of ... (more)

6
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no
votes
1
answer
Last activity 2016-12-07 13:19:53 +0100 by Tong Yu

"LEDS_NUMBER" couldn't be solved in Eclipse on SDK12

I used to develop based on sdk11 in Eclipse, EVERYTHING works fine. But now I am trying the sdk 12.2.0, in the blinky example, "LEDS_NUMBER" couldn't be solved, but the project can be successfully built. image description

"LEDS_NUMBER" is ... (more)

17
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no
votes
1
answer
Last activity 2016-12-07 13:13:25 +0200 by Hung Bui

NRF52 Watchdog Reset When only reset source is soft reset?

I'm working on a battery - operated device where the battery is soldered onto the device, which makes it inconvenient to pull power to the device. I might be able to get to the reset pin on the nRF52, but ... (more)

240
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no
votes
2
answers
Last activity 2016-12-07 13:07:25 +0200 by Krzysztof Chruściński

QDEC SAMPLEPER Register'Problem

Checking QDEC (Quadrature decoder) of nRF52832.

But, In a SAMPLEPER Register(0x508) when set to 128us(0) or 256us(1) does not occur SAMPLERDY Event.

On the other hand, Setting from 512us(2) to 131ms(10) and SAMPLERDY Event has ... (more)

24
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2
votes
2
answers
Last activity 2016-12-07 12:58:08 +0200 by Richard Gledhill

Request for nrfutil Windows executable

Hi (aimed at Nordic really, this one),

Having the nrfutil available as nrfutil.exe (Windows executable) would be HUGELY helpful.

It's a real nuisance for us as developers to have to download git, download Python, clone the nrfutil repository ... (more)

3
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no
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no
answers
Last activity 2016-12-07 12:45:48 +0200 by Joep

Secure DFU example not working

We're strumbling getting the secure DFU examples to work.

Setup

  • PCA10040 as DFU initiator using nrfutil
  • PCA10028 as DFU receiver
  • nRF5_SDK_12.1.0_0d23e2a

  • nrfToolbox on iPhone version 4.2.0

INFO:Inside main 0> :INFO:In nrf_bootloader_init 0> :INFO ...

(more)

4
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no
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no
answers
Last activity 2016-12-07 12:40:17 +0200 by AYman Rjab flag of Tunisia

MTU Exchange sub-procedure on s130_1.0.0

Hello Nordic Team,

As I'm worrying about the max payload lenght that I can notify using soft device s130.1.0.0 on nrf51822 (256 Kb Flash/ 16KB RAM, SDK10), I thought about the MAX ATT_MTU that we can ... (more)

28
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no
votes
1
answer
Last activity 2016-12-07 12:33:38 +0200 by Petter Myhre flag of Norway

How to fix Keil uVision Device error?

When I change the target from nrf51422 in the SDK into nrf51822 there is this error in Keil uVision Project window.

Device Error

I can't find a way to remove the files in red warning.

arm_startup_nrf51.s
system_nrf51.c

Please advice ... (more)

56
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no
votes
1
answer
Last activity 2016-12-07 12:03:23 +0200 by Petter Myhre flag of Norway

nRF5_SDK_12.1.0 S130 I ony want to save 1 byte to flash and read a byte from flash,How to realization

I follow the example, as below nRF5_SDK_12.1.0_0d23e2a\examples\peripheral\flashwrite

but I only get some error, can not get anything, and the ble is unconnected.

56
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no
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no
answers
Last activity 2016-12-07 11:33:53 +0200 by Tim

sd_ble_gap_rssi_start() returns NRF_ERROR_INVALID_ADDR

Any idea why sd_ble_gap_rssi_start(handle, 0, 0); returns NRF_ERROR_INVALID_ADDR? The documentation doesn't list that as a possible return value and I can't look in the code to see what is causing it.

I'm not doing anything fancy ... (more)

38
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1
vote
1
answer
Last activity 2016-12-07 11:26:38 +0200 by Jørgen Holmefjord flag of Norway

nRF52840 mechanical specification [closed]

Hi

Does the newly released nRF52840 chip have pins on the side, corresponding to the "outer ring" (A8-23, AD2-23, B1-W1, ...) pins on the underside of the chip, like this graphic suggests:

image description

Or are all the pins only on the underside ... (more)

29
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no
votes
1
answer
Last activity 2016-12-07 11:22:19 +0200 by Sigurd flag of Norway

Softdevice S140 for nRF52832

Hi,

Will the S140 be available for nRF52832 or nRF52840 only?

Best regards.

22
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no
votes
1
answer
Last activity 2016-12-07 11:08:27 +0200 by Even

can I use ANCS realize reject the call from iphone?

can I use ANCS(51822_SDK9.0) realize reject the call from iphone? How can i do?

33
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no
votes
1
answer
Last activity 2016-12-07 11:00:24 +0200 by Petter Myhre flag of Norway

BLE "User Data" Service

Hi

I am evaluating this profile:

https://www.bluetooth.com/specificati...

Is it availabile an implementation in nordic sdk of this profile? Or something similar to have a reference...

Thanks in advance

55
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no
votes
1
answer
Last activity 2016-12-07 10:50:59 +0200 by Bjørn Spockeli flag of Norway

What can we expect with SD 1.4.0 / BLE5 compatibility?

Even though the SIG hasn't finalized yet and the 1.4.0 SoftDevice isn't out... Can we get a heads up on what to expect for 1.3.0 BLE 4.2 compatibility?

  • On something like speeds and ...

(more)

11
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no
votes
no
answers
Last activity 2016-12-07 10:40:08 +0200 by Jan Rychter

nRF52 timer has no modulus?

I'm learning about the nRF52 series and so far love everything I see, especially the SDK. But I just got to the point where I'd like to generate precisely timed output, and there is something I don't ... (more)

40
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no
votes
3
answers
Last activity 2016-12-07 10:25:35 +0200 by Hung Bui

Google Play can not visit in China? Can you provide the download APK in your web.

image description

11
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no
votes
1
answer
Last activity 2016-12-07 10:13:42 +0200 by Sigurd flag of Norway

app can connect steadily

hello everyone,

Which APP demon is the most stable APP?

I use nrf-master APP to test the blue device,it can connect very well。but when I use uart-app , it can't connect well

I dont't know the reason ... (more)

30
views
1
vote
1
answer
Last activity 2016-12-07 10:08:00 +0200 by David García Polo

startup_config.h in the 8.9.0 pack

In arm_startup_nrf52.s (in the 8.9.0 device family pack), there is a new bit of code:

                IF :DEF: __STARTUP_CONFIG
#include "startup_config.h"
                ENDIF

I assume this code allows one to manually specify things like Stack_Size and Heap_Size. Is ... (more)

46
views
1
vote
1
answer
Last activity 2016-12-07 09:55:44 +0200 by Aryan flag of Norway

FreeRTOS changes for better RTOS timer accuracy

Hi,

I have made some changes with how we update tick timer inside FreeRTOS and the results are promising . The improvement is

1) RTOS tick will auto correct if masked for more than one tick. BLE activity will not affect ... (more)

22
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no
votes
1
answer
Last activity 2016-12-07 09:47:10 +0200 by Hung Bui

I am from China, and cannot download the fresh nrf tools app? [closed]

Can you provide some other App download url, for people from China. To download the APP.

42
views
1
vote
1
answer
Last activity 2016-12-07 09:29:30 +0200 by JosPasAl

Unable to dfu bootloader nrf52

In order to perform dfu to softdevice S132 v3 sdk12 (secure bootloader) from sdk11 softdevice S132 v2 (legacy bootloader).I've change the legacy bootloader as it it says here: https://devzone.nordicsemi.com/questi...

The "fix_legacy_bootloader" works fine if ... (more)

27
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no
votes
1
answer
Last activity 2016-12-07 09:25:06 +0200 by Sigurd flag of Norway

nrf52 maximum application size

Hi,

I'm thinking of using the NRF52 for an embedded wearable sensor application. How much flash and Ram space can I expect to have remaining approx. for my application if I'd like to use BLE and DFU feature ... (more)

11
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no
votes
1
answer
Last activity 2016-12-07 09:02:03 +0200 by Jørgen Holmefjord flag of Norway

the DFU does support windows?

To install micro-ecc, complete the following steps:

Install version 4.9-2015-q3-update of the GCC compiler toolchain for ARM. You can use ARM's Launchpad to find the toolchain for your operating system.
Make sure that make is installed (see, for ...
(more)

76
views
5
votes
3
answers
Last activity 2016-12-07 08:39:10 +0200 by Aleksander Nowakowski

No disconnect event after bond on Android

Hello,

To reproduce this problem I use these steps:

  1. Bond to NRF51822 using Android 6.0.1 and latest nRF Connect version;
  2. After successful bond, connect to NRF51822;
  3. Use "DISCONNECT" button in nRF Connect application;

After these steps my application ... (more)

15
views
no
votes
no
answers
Last activity 2016-12-07 08:38:14 +0200 by okan1

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)

51
views
1
vote
1
answer
Last activity 2016-12-07 08:30:57 +0200 by Bjørn Spockeli flag of Norway

DFU - Updating from Legacy(SDK v11.0.0) Bootloader to Secure(SDK v12.x.0) Bootloader

My nRF52 device has been flashed with the Legacy Bootloader from SDK v11.0.0 and now I want to update to the new Secure Bootloader in SDK v12.x.0. However, when I try to update my device with ... (more)

10
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no
votes
no
answers
Last activity 2016-12-07 08:03:47 +0200 by ligang flag of China

DFU with hex

image description

I want to know how to use the application.hex,to finish the DFU.

69
views
1
vote
1
answer
Last activity 2016-12-07 05:08:36 +0200 by mikster

nRF52840 TX/RX power specs ?

Anybody seen TX/RX power specs for nRF52840 yet. Notably absent from all I have read.

20
views
no
votes
no
answers
Last activity 2016-12-07 04:22:10 +0200 by ligang flag of China

Can you provide a sample of DFU example using s130 , v12.1.0

I write the code almost ok. but , I neet the DFU function to UPDATE THE software .

Now, we only find a v11 example can run ok but only a zip, not including any code.

the other question, how to add ... (more)

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