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Last activity 2017-05-24 07:11:21 +0200 by goldwake

nrfutil application version

I'm using nrfutil version 2.0.0 and have noticed a strange bug today when generating a new signed application image for bootloading.

If I have a version number of 0207 or below, it works. If I have a ... (more)

33
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votes
1
answer
Last activity 2017-05-24 07:08:16 +0200 by shailav619

Which are different memory storage option?

Hello, I am using pca10028 and sdk 12.2. I have interfaced temp sensor with nrf51 and now I want to store that data continuously in memory of nrf51. I want to store min 4k sample consisting of 2 bytes ... (more)

6
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answers
Last activity 2017-05-24 06:15:44 +0200 by pavanvulichi

spi master example code

hello , I am new to SPI protocol.I am using NRF52 DK &nRF5_SDK_13.0.0_04a0bfd( pca10040) using keil-5. I want spi master example code. Can any one suggested me where I find the spi master example code, Because I have ... (more)

8
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Last activity 2017-05-24 05:53:51 +0200 by rct42

NRF52 Timing Accuracy

I'm developing an accurate and low drift millisecond-resolution timer on the NRF52. I'm limited to the resources on the NRF52 itself. Details of the system:

  • Initialise TIMER0 to be clocked from the main crystal (16MHz 10 ppm, using ...
(more)

7
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Last activity 2017-05-24 05:48:46 +0200 by sara

Pairing and Bonding Question

Hello,

In my application, a peripheral will be connected to many central devices, and the application includes buttonless dfu service.

It needs pairing (encrypted connection) but no bonding.

nRF52832, SDK12.2.0, s132

The settings in my project are listed ... (more)

6
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answers
Last activity 2017-05-24 05:02:21 +0200 by tovax

How to expand the flash memory address?

Hi, all!

nRF51822 had been used in my project, because of dual bank bootloader and softdevice, the internal flash memory was not enough for the application. I want to know how to expand the flash memory.

I think a external ... (more)

7
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answers
Last activity 2017-05-24 04:37:17 +0200 by desongli

code of protocol stack which part of the Protocol I can modify?

Hi there, I need to add more the function based on Bluetooth, and I need the better security of the function. However, I do not want others read flash data freely and I hope only through my certification could the ... (more)

5
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answers
Last activity 2017-05-24 04:27:51 +0200 by muyang

Pwm minimum frequency setting

hi, I would like to use pwm to output the 1HZ waveform to drive the motor, but when I set the frequency to be 1HZ, I can not find the device and cause 51822 to reset. This is my code ... (more)

9
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answers
Last activity 2017-05-24 03:58:35 +0200 by shuenn

AirFuel SDK 2.2.0 IROM and IRAM settings

I download "nRF5_AirFuel_SDK_2.2.0_7b89a57" and use "ptu_app_beacon" development, I am currently using "nrf51822-QFAA" and "nrf51822-QFAC", how do I set up IROM and IRAM?

12
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answers
Last activity 2017-05-24 03:31:55 +0200 by thomasjiang

nRF51822 pairing problem

I implemented my profile based on GLS example. my profile has five services and every services have several characteristics. Pairing with several smartphone work properly. But when i added another service (ANCS or DFU service), pairing problem was coming.
pairing ...
(more)

6
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answers
Last activity 2017-05-24 02:58:00 +0200 by nine-fox

I clicked 'fill with zero' in Jflash. Bricked the chip?

Hi,

By mistake, I clicked 'fill with zero' button in Jflash, may I ask, is my chip bricked because of this? Thanks.

The following lists my steps:

1) program the softdevice 4.0.2 in jflash

2) compile heart sample ... (more)

11
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answers
Last activity 2017-05-24 01:49:44 +0200 by Ricco

Can I get two NFC 13.56MHz antennas from Nordic?

I have four of the nrf52 DK's. I lost two of the NFC 13.56MHz antennas.

Can I get/buy two from Nordic?

Richard Ferraro

27
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answers
Last activity 2017-05-23 23:48:36 +0200 by apreston

Firmware needed for nRF52832

I have a small PCB I'm prototyping/assembling, based on a nRF52832 with a few sensors. Looking for someone here to help me with writing basic firmware for testing the board. This could be a contract gig. I'm ... (more)

40
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votes
1
answer
Last activity 2017-05-23 23:09:06 +0200 by endnode

Save a single byte onn flash is it possible?

Hi all,

I am trying to save an UART variable I am receiving. My case is very similar to the example Flash Write Example, but I would write few bytes instead of the whole flash page it is possible?

My ... (more)

8
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no
answers
Last activity 2017-05-23 22:48:23 +0200 by alebo

registers MMA7660

how i can write to MMA7660 registers in twi_master_using_app_twi example SDK?

25
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votes
1
answer
Last activity 2017-05-23 21:31:02 +0200 by endnode

Where to buy antenna for nRF52840 Preview DK

I lost my antennas. Where can I buy compatible antenna for my two nRF52840 Preview DK's ?

thanks,

Richard

17
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answers
Last activity 2017-05-23 21:19:24 +0200 by Lola

Saving words in FDS memory ?

I was able to use the fds with the help of good people here , I am trying now to save a word into memory.

As I see in the docs, the only way to save data is by uint32_t chunks ... (more)

17
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1
vote
1
answer
Last activity 2017-05-23 21:14:25 +0200 by endnode

Possibilities to deploy pre Initialized Images (Pre-Set TK or LTK) in BLE

Hello,

A theoretical question at this point, but I read that there are some possibilities to set a Passkey or OoB, but I am more interested in skipping the entire Pairing process and set or change (if the pairing process ... (more)

19
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votes
1
answer
Last activity 2017-05-23 21:01:03 +0200 by Jørgen Holmefjord flag of Norway

On power up only 1 LED is glowing instead of 2

Is there any way to fix it? I tried clearing all the memory using nRFGo and tried dumping example code but it failed by giving errors whose link for the screenshot has been posted in the details.

image description

image description

31
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no
votes
1
answer
Last activity 2017-05-23 20:47:36 +0200 by Jørgen Holmefjord flag of Norway

unable to compile libmbedcrypto.a

hello, i am trying to compile libmbedcrypto.a but the Make file is pointing to a non existing file called /mbedtls/sha256_alt_cc310.c. Any idea where i can find this file?

Thank You Nav

28
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4
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no
answers
Last activity 2017-05-23 18:24:09 +0200 by P879

Unable to Send Messages NRF52 BLE Central Custom Device

Currently I am using the NRF52 device to connect with a custom peripheral. The current goal I am trying to reach is toggling an LED by sending the command 0x8900 through Service UUID 0x0001 with Characterisic ID 0x0002.
This is ...
(more)

18
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no
votes
1
answer
Last activity 2017-05-23 17:40:01 +0200 by endnode

advertissment_frame_data

Hello, I want to send the data via the advertissment frame. I want to know if code example that does this.(i use nrf52" nrf52832") thank you

45
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3
votes
2
answers
Last activity 2017-05-23 17:29:09 +0200 by Olivier

Best way to send data from many sensors

Hi,

For an application I have a nRF51 at my disposal and I need to transfer about 3'000Bytes. I found in the documentation that the nRF51 can use the S130 SoftDevice which support BLE 4.2. The data I ... (more)

8
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answers
Last activity 2017-05-23 17:22:48 +0200 by Agge

BLE_GATTS_OP_EXEC_WRITE_REQ_NOW never received

I've merged the experimental_ble_queued writes sample code into my project and am testing the long write characteristic with nrfConnect from an Android phone. I get no errors anywhere, everything seems to work fine, except I never receive the BLE_GATTS_OP_EXEC_WRITE_REQ_NOW ... (more)

251
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1
vote
1
answer
Last activity 2017-05-23 17:07:50 +0200 by Jørgen Holmefjord flag of Norway

Ble_app_beacon and nrf52840

Hi,

I have downloaded the latest nrf52 v13 sdk. And i am using nrf52840 PDK.

And i would like to use the beaco_n example. But i am seeing that the ble_App_beacon folder does not contain the hex files for pca10056 ... (more)

22
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answers
Last activity 2017-05-23 16:25:06 +0200 by Martin Peters

SDK12.3. Secure Bootloader : UART and ld config

Hi all

I'm working on a custom board using gcc and eclipse.

My primary problem is I'm fighting with the ld settings for the secure bootloader. I activated the RTT which led to a slightly larger HEX debug ... (more)

31
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no
votes
2
answers
Last activity 2017-05-23 16:24:44 +0200 by Jørn flag of Norway

Where can I get a example and document about intterupt for nrf52(840).

I am a beginer nRF52, and I want to learn about interrupt. Where can I get a example and document ? thanks!

43
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4
votes
1
answer
Last activity 2017-05-23 16:04:20 +0200 by hberg

Use BLE without GAP/GATT

I'm currently writing my thesis, and my goal is to establish a network protocol like IP. We need to transmit about 200kB of data between 2 or more nodes once every 10-30 minutes.

My current approach is to use ... (more)

51
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no
votes
1
answer
Last activity 2017-05-23 15:59:01 +0200 by Jørgen Holmefjord flag of Norway

Read or change nRF51 mac address on Zephyr

Our project uses a Raspberry Pi compute module 3 connected via UART to 2 nRF51822. I'll go through what is working and than describe the issues I'm having

What's going on without issues:

  • The 2 nRF51822 are ...
(more)

79
views
no
votes
1
answer
Last activity 2017-05-23 15:54:13 +0200 by dingari

Bootloader doesn't load application on power-on

I have a small problem with my bootloader + application on NRF52832. I'm using SDK 12.2.0 with S132 v3.0.0.

When the device loses power, and power is then re-applied, the bootloader doesn't start the application ... (more)

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