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27,067 questions

103
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2
answers
Last activity 2015-05-05 00:38:23 +0100 by Gustav

Enhanced Shockburst mode with out pre-loaded reply

I am using the nRF24le1 in Enhanced Shockburst mode.

The datasheet describes how it is possible to upload acknowledge packets, W_ACK_PAYLOAD, to the TX FIFO. And then the PRX will send the acknowledge as soon as it receives a packet ... (more)

108
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no
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no
answers
Last activity 2015-05-04 23:51:13 +0100 by Meh05

multilink central update problem [closed]

Hi, I want to use ble_app_multilink_central example for my own application. Here are my problems:

  1. Setting MIN and MAX CONN_INTERVAL to more-less 20ms or lower (both on peripheral and central) causes that central goes of when peripherial is trying to ...
(more)

506
views
no
votes
1
answer
Last activity 2015-05-04 22:05:02 +0200 by Nikolaj flag of Denmark

Copying the PCA10028 antenna design

Hi,

Is it possible for me to completely copy the antenna design from PCA10028 unto my custom board? I don't need a very long range, but I need to make a design fairly quickly.

My problem is that I ... (more)

608
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1
vote
no
answers
Last activity 2015-05-04 20:13:10 +0100 by Vivian

nRF51822 sniffer Decryption incorrectly

We've been using the nRF51822 sniffer to listen to packets. One of our developers used to be able to use it decrypting packets without a problem (He uses 32-bit system, firmware version special built provided by you guys - 096_alpha_739_766fw ... (more)

181
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no
votes
2
answers
Last activity 2015-05-04 17:25:38 +0100 by ppatierno

Why nRF51822 DK running HTM APP can't be paired with any windows 8.1 NB?

We tried to pair with and connect to nRF51822 DK running HTM app with SONY VAIO fit15e NB and always fail as we did the following steps. We also tried some devices like ASUS VIVO Smart Tablet and Window phone ... (more)

298
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no
votes
1
answer
Last activity 2015-05-04 16:59:48 +0100 by ppatierno

s110 v8.0.0 ble_app_uart pairing Issue

Hello.

I use SDK 8.0.0 and PCA10028 board. I try connect board to the Windows 8.1 PC ( i have Tablet PC and Desktop PC with BLE dongle). For connect board to Windows i must perform pairing procedure ... (more)

385
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1
vote
1
answer
Last activity 2015-05-04 16:29:21 +0200 by Torbjørn Øvrebekk

nRF24L01+ as TX and nRF51822 as RX

I have a nRF24L01+ connecting to an Arduino board using the RF24 library code. It is a print of the registers:

http://i.imgur.com/Y3krORD.png

On the nRF51822 I have the following code:

    int main()
{
    // Initialize ESB
    (void)nrf_esb_init(NRF_ESB_MODE_PRX);

        nrf_esb_set_base_address_length(NRF_ESB_BASE_ADDRESS_LENGTH_4B);
        nrf_esb_set_datarate(NRF_ESB_DATARATE_250_KBPS ...
(more)

204
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no
votes
2
answers
Last activity 2015-05-04 16:15:19 +0100 by Torbjørn Øvrebekk

Gazell Availabel Channels

What are the allowed channel numbers for gazell?

In the gazell user manual it states, a possible 80 channels. While the nrf_gzll_set_channel_table () API reference says channels can be "0 <= channel <= 125, where the actual centre frequency is (2400 + channel)*".

But ... (more)

125
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no
votes
1
answer
Last activity 2015-05-04 16:04:25 +0100 by Martin Børs-Lind flag of Norway

How can I set PCA10001 work with 32MHz?

For PCA10001 have 16MHz crystal, and I use the NOP to test the cycle. And found the device work in 16MHz. How to set this board as 32MHz?

This is my current setting in S120: SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_XTAL_20_PPM, false);

Thanks!

55
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no
votes
1
answer
Last activity 2015-05-04 15:54:13 +0100 by Hung Bui

DRGN-4626, DRGN-4743, DRN-4744 [closed]

What is the meaning of these abbreviations?

85
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no
votes
1
answer
Last activity 2015-05-04 15:53:52 +0100 by Hung Bui

what is DRGN

HI,

I went through the forums and while searching for help, I came across the word DRGN.

Can anybody elaborate the word.

Thanks,

2k
views
no
votes
1
answer
Last activity 2015-05-04 15:49:38 +0100 by Martin Børs-Lind flag of Norway

Bluetooth Developer Studio (Beta) Plugin? [closed]

Based on the announcement for upcoming training (https://www.nordicsemi.com/eng/Events...) it sounds like Nordic will support the Bluetooth SIG's Bluetooth Developer Studio (http://www.bluetooth.com/SiteCollecti...). When/where will a plugin be available?

758
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no
votes
2
answers
Last activity 2015-05-04 15:46:14 +0200 by Stefan Birnir Sverrisson flag of Iceland

Android 5.01 (Nexus 4) multiple packets per connection interval

Dear community,

I would like to know how to send as much data as possilbe from a Nexus 4 to an NRF51822 based device. For that I think I need to send multiple packets per connection interval.

What I did ... (more)

301
views
no
votes
1
answer
Last activity 2015-05-04 15:36:53 +0100 by Kristin flag of Norway

NRF51422 differential antenna port impedance?

I am trying to use a differential antenna with the NRF51422 and I do not want to misunderstand the datasheet. It says that the optimum differential impedance at 2.4 GHz seen into the matching network from pin ANT1 and ... (more)

414
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no
votes
1
answer
Last activity 2015-05-04 15:29:03 +0100 by Hung Bui

UART bootloader

Hi, Is there a UART bootloader built in to the factory firmaware similar to others like NXP LPC series where a specific pin is held low at reset. If so what pins are used? Thanks

47
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no
votes
1
answer
Last activity 2015-05-04 15:17:59 +0100 by Petter Myhre flag of Norway

Two app on a mobile phone connectted with a device [closed]

Hi, Nordic Engineers:

Pls give your hand, new question: Could i run two app on one mobile-phone that connceted with only one device? also, they can operate the device by their turn.

967
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5
votes
2
answers
Last activity 2015-05-04 15:04:32 +0200 by Hung Bui

Why Sniffer shows CONNECT_REQ from Slave to Master?

Not only myself but also other captured logs: It shows CONNECT_REQ from Slave to Master. Is it right?

429
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1
vote
1
answer
Last activity 2015-05-04 14:58:11 +0200 by Stefan Birnir Sverrisson flag of Iceland

uC sleep while advertising (nRF51822)

Guys, I would like to put the internal uC in sleeping mode while nRF51822 is advertising and wakeup him, when I establish a connection.

I know that is possible, it must be :) Is there any similar example that does this?

298
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2
votes
1
answer
Last activity 2015-05-04 14:46:17 +0200 by Martin Børs-Lind flag of Norway

Can I use UART with an external module linked up to nRF51DK via SWD?

I am really struggling getting anything to work on my revision 1 module and as it has nothing connected at this moment all I can use is BLE or UART to observe any function.

If it is possible.. how to ... (more)

806
views
2
votes
1
answer
Last activity 2015-05-04 14:32:20 +0200 by Martin Børs-Lind flag of Norway

TWI Module lock-up still present in nrf51822 v3 [PAN #56]

Hi,

I am currently experiencing TWI module lock-up issues with the hardware TWI library, which is supposedly fixed according to PAN v3.0, issue #56. (The issue was previously identified in PAN v2.3)

My setup is as follows, custom ... (more)

911
views
2
votes
1
answer
Last activity 2015-05-04 14:26:12 +0100 by Hung Bui

nrf.exe dfu genpkg help

Alright, so I am having a lot of trouble generating a valid zip file to update with nRF Toolbox (android).

I used nRFgo Studio to flash dfu_test_app_hrm.hex and dfu_test_bootloader_b.hex (from examples\dfu\ble_dfu_send_hex\test_images_update).

With nRF Toolbox, I ... (more)

130
views
1
vote
1
answer
Last activity 2015-05-04 14:25:43 +0100 by muhkuhns flag of Germany

Master Control Panel or similiar for Windows 8.1 with onboard Bluetooth Smart Ready?

I got a Tablet running Windows 8.1 with a Bluetooth Module that is able to find my nRF51-DK.

Is there a software I can use to interact with my Bluetooth Services of the DK? (Like Master Control Panel for ... (more)

3k
views
3
votes
5
answers
Last activity 2015-05-04 14:22:00 +0200 by Stefan Birnir Sverrisson flag of Iceland

about NRF_POWER->GPREGRET

Hi,all.I have a question that NRF_POWER->GPREGRET will change it's value in what conditions?Power on or App reset?Can someone help me ?

89
views
1
vote
3
answers
Last activity 2015-05-04 14:09:58 +0100 by Martin Børs-Lind flag of Norway

Footprint of S110 V8.0.0

Hi,

I would like to know what is the footprint of softdevice S110 v8.0.0. When i compile the Glucose code example from Nordic it shows a Program Memory utilised as around 27kB and data memory as 6kB. But ... (more)

276
views
no
votes
2
answers
Last activity 2015-05-04 14:02:11 +0200 by Stian flag of Norway

Add delay argument to spi_master_send_recv : Where does the Chipselect get pulled high?

Hello,

for my sensor I need to have a delay BEFORE pulling CS high. So I would like to add an argument to the

spi_master_send_recv()

function that give me exactly this possibility.

But I am not 100% sure where exactly ... (more)

228
views
2
votes
3
answers
Last activity 2015-05-04 13:33:30 +0100 by Martin Børs-Lind flag of Norway

disable sd for sometime [closed]

Hello devzone... My setup: nRF51422 and S110 peripheral My setup transmits IR data on reception of Bluetooth data from a central device. I have used PWM for generating IR pulses. It is configured as GPIOTE, the timer compare event toggles ... (more)

296
views
no
votes
2
answers
Last activity 2015-05-04 13:07:56 +0100 by Stian flag of Norway

How to turn on the BSP UART

Hello,

I am altering this project: nRF51_SDK_8.0.0_5fc2c3a\examples\ble_peripheral\ble_app_hrs\pca10028

I am trying to turn on the BSP UART. I main.c the project uses bsp_init() to enable the buttons and leds.

I just want to use ... (more)

647
views
3
votes
1
answer
Last activity 2015-05-04 12:49:37 +0200 by Stefan Birnir Sverrisson flag of Iceland

ADC_RESULT in nrf51822

I was trying to calculate analog voltage in nrf51822 through ADC. I used analog 2 pin ref voltage =1.2v pre scaler = 1/3 so while i connected 0.9v to analog pin. I see analog result as 0xDB. I ... (more)

622
views
no
votes
3
answers
Last activity 2015-05-04 12:19:49 +0100 by Aryan flag of Norway

Example for using S120 as peripheral? [closed]

Hello,

currently I am using the S110 Softdevice with the ble_template example as peripheral. This works fine.

For our final application, we need the central feature with up to 8 connected peripherals. Therfor I want to use the S120 softdevice ... (more)

159
views
1
vote
2
answers
Last activity 2015-05-04 09:34:07 +0100 by Petter Myhre flag of Norway

Accepting multiple connections as a peripheral [closed]

Dear all,

Does anyone have an idea about how can a peripheral be in connection with many centrals at once (regardless which SoftDevice to use) ?

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