RSS
Sort by » date activity ▼ answers views votes

28,724 questions

240
views
1
vote
2
answers
Last activity 2015-08-04 23:35:37 +0100 by John

nrf51 iot sdk Windows 8 [closed]

Hi, I don't have a Rasp Pi. Can I have a workaround to make a Windows 8 PC acting as a border router?

360
views
4
votes
2
answers
Last activity 2015-08-04 22:25:47 +0100 by Paolo D

Master Control Panel keeps on Crashing

When ever I place my nRF ek dongle and try to run it it just crashes. I'm using MCP 3.9.0 and windows 7. This question has been asked before so I know that some people already had ... (more)

621
views
1
vote
no
answers
Last activity 2015-08-04 20:10:55 +0100 by comkuk

Programming NRF51822 on a custom board

Hello,

I'm a newbie in this area, and I'm trying to program NRF51822 QFAA on a custom board according to the given tutorial for a dual bank bootloader (https://devzone.nordicsemi.com/tutori...). It looks OK while compiling ... (more)

582
views
no
votes
2
answers
Last activity 2015-08-04 19:44:32 +0100 by Paolo D

clarification of PAN#73 (v3 TIMER PPI sleep issues) workaround

The workaround for nRF51822 PAN#73 specifies setting an undocumented register at offset 0x0C0C of the timer peripheral to 1 prior to TASKS_START, and clearing it after TASKS_STOP.

Two questions:

  • The description says "Routing TASKs...using the PPI and at ...

(more)

98
views
no
votes
1
answer
Last activity 2015-08-04 16:38:59 +0100 by Petter Myhre flag of Norway

BLE pairing with IOT SDK [closed]

I am trying to add pairing option in IOT examples provided in nrf51_iot_sdk_0.8.0. I don't see device manager interface in this SDK. Are there sample examples I can use to implement ble pairing with this SDK?

Even ... (more)

733
views
3
votes
1
answer
Last activity 2015-08-04 16:33:06 +0200 by Hung Bui

Can a Samsung Galaxy S5 (Android 5.0) support a 4-packet BLE connection event?

Trying to send 3 20-byte packets of data from nRF51822 (peripheral device) to a Samsung Galaxy S5 (central device) and send 1 20-byte packet back, all in less than 10ms. I have seen that not all central devices can support ... (more)

214
views
1
vote
1
answer
Last activity 2015-08-04 16:13:51 +0100 by Zoltan

question about QDID 44613

Hi all,

I design the kb based on the SDK6.1 and SD7.1 with 51822, and doing the PTS certification now, but meet some problem on TC_CON_BV_01_C, ATT Write error,  such as the attachment.

image description

As the original source code ...
(more)

273
views
no
votes
1
answer
Last activity 2015-08-04 15:33:03 +0100 by Hung Bui

Compatibility Matrix

Hello,

as described in the Compatibility Matrix it is necessary to use a revison 3 chip to use the S130 SoftDevice? Right?

image description image description

Please explain why the Revision 2 chips doesn´t support the S130. In my oppinion the RAM can ... (more)

3k
views
6
votes
2
answers
Last activity 2015-08-04 14:09:41 +0100 by Eliot Stock flag of United Kingdom

Getting an iOS central app to bond

I have an iOS app which is a central to a peripheral running on an nRF51822. A similar Android app works fine and is able to connect to the peripheral, discover services, bond explicitly, and read an encrypted characteristic.

On ... (more)

194
views
1
vote
1
answer
Last activity 2015-08-04 11:52:35 +0100 by Nomi

how can i initialize two hardware uart peripherals at the same time.?

i have initialized a uart then i changed its rx and tx pins. now i want to initialize two uarts. i found the function to do this. app_uart_init.but i dont know how to pass these two arguments in this ... (more)

202
views
1
vote
1
answer
Last activity 2015-08-04 10:40:23 +0100 by Aryan flag of Norway

UUID for production

We are using the Nordic UART service for our product. Should we just use the standard UUID that the Nordic Uart uses or just generate our own for the product? Thanks

310
views
no
votes
1
answer
Last activity 2015-08-04 10:00:45 +0100 by Gustav

Serial number in nRF24le1

Is it possible to protect part of the memory of nRF24le1, in such a way, that it can be used for a serial number?

For my application, it would be beneficial to be able to update the firmware, without changing ... (more)

724
views
no
votes
no
answers
Last activity 2015-08-04 09:45:41 +0200 by peetonn

nRF51822 BLE UART latency

Peripheral receives 4 bytes from central in order to set color of 5 LEDs (1 byte command type + 3 bytes RGB data). There's an iOS app with color picker where user can select a color. User may change color ... (more)

274
views
no
votes
1
answer
Last activity 2015-08-04 09:36:28 +0100 by qqyouyue

how do I import the Android nRF beacon source code into eclipse?

Hello, I just download the Android nRF beacon source code from Github, but how do I import this source code into the eclipse? even I use the git tool import the code to eclipse, it doesn't look likes the ... (more)

239
views
1
vote
1
answer
Last activity 2015-08-04 08:47:52 +0100 by Øyvind Karlsen flag of Norway

suggestion: permanent infocenter links to product anomaly descriptions

Now that the infocenter is available, please consider making product anomaly descriptions available at a permanent URL, e.g. http://infocenter.nordicsemi.com/nRF51822/PAN#11.

The frameworks I develop for Nordic chips generally include workarounds for relevant anomalies, and ... (more)

62
views
no
votes
1
answer
Last activity 2015-08-04 08:34:53 +0100 by Øyvind Karlsen flag of Norway

How to share a new tutorial?

We have added support for nRF51 devices to VisualGDB, our Visual Studio plugin for embedded development and would like to share some tutorials showing how to develop common project types (e.g. http://visualgdb.com/tutorials/arm/nr...). However the ... (more)

812
views
1
vote
1
answer
Last activity 2015-08-04 05:17:06 +0100 by sara

MITM attacks

Hello,

We avoid MITM attacks by using a static passkey. Does it mean that the attacker can decrypt the connection if attacker get the passkey? What I transfer or receive data will be captured by the attacker?

351
views
no
votes
1
answer
Last activity 2015-08-04 03:42:39 +0100 by RK flag of Singapore

7.x.x SDK compatibility with nRF51422 - V2 chips

To support a mix of v2 and v3 chips, I want to use the 7.x SDK. But I'm not sure it's compatible. The matrix at http://infocenter.nordicsemi.com/topi... contains a blank space:

image description

Is there meant ... (more)

869
views
no
votes
3
answers
Last activity 2015-08-03 21:05:48 +0200 by Jacob Portukalian

Running application in non debug mode - Eclipse GCC

Hello,

I have been able to get an application to build and run in debug mode using Eclipse GCC (Kepler) for the nRF51822. My application does not use a soft device. We are using some of the nRF files from ... (more)

452
views
1
vote
1
answer
Last activity 2015-08-03 20:11:45 +0200 by nejcokle

Led Flashing

Hello,

I want to use timer with my app. I want to make led on my beacon flash for 1 second when it recieves a value. How can i set timer to turn of led after 1 sec?

I'm ... (more)

659
views
1
vote
1
answer
Last activity 2015-08-03 17:25:42 +0100 by andrey

Missing symbols after porting to Eclipse

This is what happens when linking my project in Eclipse:

make all 
'Building target: project_name.elf'
'Invoking: Cross ARM C Linker'
arm-none-eabi-gcc -mcpu=cortex-m3 -march=armv7-m -mthumb -O0 -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections  -g3 -Xlinker --gc-sections -Wl,-Map,"project_name.map ...
(more)

626
views
no
votes
2
answers
Last activity 2015-08-03 17:09:36 +0100 by leo

S130 ble_app_hrs_rscs_relay

Hi, i have a question about s130 ble_app_hrs_rscs_relay demo, i want to add nus service to this demo, so i transplant the code from the nus demo ,

1:advertising_init use follow param, can't find any service on nrf tool ... (more)

212
views
1
vote
1
answer
Last activity 2015-08-03 15:40:54 +0100 by Hung Bui

why microsoft bt keyboard need 3 mode?

http://www.microsoft.com/hardware/en-... Why microsoft BT keyboard have 3 mode to support IOS, Android, Windows? But we only have 1 sample for HID_keyboard. Can Nordics provide specific samples for IOS, Android, Windows?

image description

image description

1k
views
1
vote
1
answer
Last activity 2015-08-03 15:29:02 +0200 by C0oo1D

nrf_drv_twi.c - many warnings about the order of volatile accesses is undefined [closed]

Warning[Pa082]: undefined behavior: the order of volatile accesses is undefined in this statement C:\Projects\..\lib\nrf_drv_twi.c 273

21 the same warnings. No errors. I believe, I forgot to connect one of the headers? But which one?

main ... (more)

69
views
no
votes
1
answer
Last activity 2015-08-03 14:59:28 +0100 by Torbjørn Øvrebekk

Gazell Failing to add packets to Tx Fifo

In my pursuit to make a stable Gazell streaming device, I noticed some issues with pushing packets to the Tx FIFO.

Even through I get an affirmative response from the nrf_gzll_ok_to_add_packet_to_tx_fifo function, my subsequent call to nrf_gzll_add_packet_to_tx_fifo results in a ... (more)

52
views
1
vote
1
answer
Last activity 2015-08-03 14:47:58 +0200 by David Edwin

Pipe status default values

Hello,

After I connect my iPhone with a 8001 nordic chip without opening the characteristic I receive a pipe status event which says that the pipe is opened. This is totally wrong because the application is closed.

Why does this ... (more)

1k
views
4
votes
2
answers
Last activity 2015-08-03 13:51:58 +0100 by Alex flag of United Kingdom

Read data from sensor i2c

Hi,

I want read accel data from BNO055 sensor to NRF51 DK board, but SCL and SDA pins are 1 always.

My code is the next one:

#include "twi_master.h"
#include "twi_master_config.h"

#define TWI_MASTER_CONFIG_CLOCK_PIN_NUMBER_2    (7U)
#define TWI_MASTER_CONFIG_DATA_PIN_NUMBER_2     (30U)

static ...
(more)

937
views
1
vote
2
answers
Last activity 2015-08-03 13:42:17 +0200 by Petter Myhre flag of Norway

Is it possible to just have reliable write enabled?

Hey everyone,

I have an application where I have to write data to a characteristic. I would like to only allow reliable writes (not unacknowledged ones). Is this permitted by the specification? (and by the s110 softdevice)

150
views
no
votes
1
answer
Last activity 2015-08-03 13:25:58 +0100 by Hung Bui

Is there a Bluetooth-Smart Central capable of 30-60 connections?

I am looking for a system of chip with Bluetooth-Smart Central capability, with the ability to have 30-60 connections.

573
views
1
vote
1
answer
Last activity 2015-08-03 13:09:04 +0100 by Hung Bui

Resetting device via python bindings

I am developing a tool that will be using the existing NRF51 dongle to run the S130 SD and it is being written in Python. There is no way to change any of these parameters since dev has been going ... (more)

Statistics

  • Total users: 26335
  • Latest user: Lila Jackman
  • Resolved questions: 11553
  • Unanswered questions: 4026
  • Total questions: 28724