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Last activity 2018-01-23 16:27:39 +0200 by samer

Is nrf_drv_spi_transfer interrupt safe?

My application runs on nRF52832 with SDK11. what happens if I call nrf_drv_spi_transfer in blocking mode from different contexts on the same SPI instance. in my case the instance is SPI1 configured without a handler (blocking mode) with priority LOW ... (more)

12
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Last activity 2018-01-23 15:17:29 +0200 by vishal

Problem with Communicate BLE and WiFi using one UART?

Hi,

I am developing application using nRF52832, s132, sdk13.2 which is collect sensor data and sent it to server. I have sent data to server using nRf52832 and interface with wifi module via UART. Now problem is i want ... (more)

64
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1
vote
1
answer
Last activity 2018-01-23 10:42:55 +0200 by vishal

Suggestion for Custom nRF52832 specially RF Antenna

Hello Sir,

we have designed custom PCB using nRF52832, I am little confused for is it OK. I have attached top and bottom layer layout of my PCB please sir review it and is it ok like antenna and Specially ... (more)

32
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no
votes
2
answers
Last activity 2018-01-22 18:10:44 +0200 by AmbystomaLabs flag of United States

Problems to get the RTT SWD output in a custom board.

Hi to everyone!

I have been getting the output of NRF_LOG_INFO functions through RTT in J-Link RTT Viewer terminal. The code has been executing in nRF52832DK.

Now I want to execute the code in a custom board with the same ... (more)

25
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answers
Last activity 2018-01-22 16:52:32 +0100 by piwex69

How to recover nrf52 on ruuvi tag after programming with softdevice and bootloader?

Hello World,

I checked the Developers Zone, but I have not found the direct example of my problem.

I use the RuuviTag board with NRF52832_XXAA.

I use it as a development board, connected over SWD to JLink, v6.2x

I ... (more)

29
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1
vote
1
answer
Last activity 2018-01-22 16:23:46 +0100 by Hung Bui

SDK14.2 DFU power cycle issue

Situation: Trying to upgrade previous versions of the SD and BL (V3.0.0) to (V5.0.0) Problem: device power cycles after a new application is flashed to the device into the V5.0.0 SD and BL.

Steps ... (more)

24
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answers
Last activity 2018-01-22 12:47:51 +0200 by jale

sdk 13 app_timer 24 hour long timer

Hi,

there were some significant changes to app_timer in sdk13.

I cannot use now the PRESCALER e.g. to 255 in order to configure the clock in such way to be able to tirgger event every eg. 24 hours.

So ... (more)

565
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3
votes
5
answers
Last activity 2018-01-22 11:17:56 +0200 by Petter Myhre flag of Norway

<error> ble_gatt: sd_ble_gap_data_length_update() (request) on connection 0x0 returned unexpected value 0x13.

Working on migrating my application from sdk 12.2 to sdk 14 except for some flash issues most of it seems to be working as before, except I notice this message in jlink:

 0> <info> app: Connected
 0> <error> ble_gatt ...
(more)

24
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1
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answers
Last activity 2018-01-22 10:47:37 +0100 by aditya

Regarding mesh provisioner

Hi,

I am establishing a Bluetooth mesh network with nordic boards (nRF52 DK) having one provisioner and many provisionee devices. But I have one doubt, if I remove the provisioner from the network, what happened to the network: 1). Is ... (more)

17
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Last activity 2018-01-22 02:47:57 +0100 by operator

Trouble with non-concurrent multiple peers

Using an nRF52832 with SDK 14.0.0, S132 SoftDevice

We are able to connect to the device with an iOS/Android phone just fine.

Upon disconnecting, a second phone is not able to connect until the nRF52 device is ... (more)

21
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no
votes
2
answers
Last activity 2018-01-21 22:41:31 +0200 by Jørgen Holmefjord flag of Norway

No sdk_config.h file for Application Timer Tutorial

The app_time_tutorial.zip file I downloaded for the Application Timer Tutorial does not contain a sdk_config file despite the #include "sdk_config.h statement included in multiple files. Therefore, the project does not compile, and throws multiple instances of this error ... (more)

42
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no
votes
1
answer
Last activity 2018-01-20 16:31:10 +0200 by Aron

can't discover nRF52832

Hello. Engineers. I'm a beginner in nRF52832, I'm looking for someone who can help me. I have nRF52832 development kit. I tried examples blankly with SDK14.0. It working well. examples are correct. After power on board and ... (more)

59
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no
votes
1
answer
Last activity 2018-01-19 13:45:10 +0200 by Joakim Jakobsen flag of Norway

getting millis from startup

I need to count millis from nrf52 start

I have seen that all are using rtc1 but I did not find any example from which i can integrate it to my project.

11
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no
answers
Last activity 2018-01-19 06:42:26 +0200 by Sensorion

Bootloader SDK14.x [closed]

I have recompiled the secure boot loader, s132 and it works great on the dev board but not on my board. The difference in boards is minimal with the exception of the fact we don't use a LF XTAL ... (more)

84
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3
votes
1
answer
Last activity 2018-01-18 09:46:25 +0100 by shibshab

Giving read permission of a characteristic to a specific connected peer in multiperipheral device

Hi,

I am using multiperipheral configuration. I want a characteristic to be read by only a specific peer among connected peers. How do i recognize and authorize this specific peer every time it connects.

I am using PCA10040 , S132, SDK ... (more)

57
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2
votes
1
answer
Last activity 2018-01-17 12:00:55 +0200 by Suhel Mulla flag of India

How I can load the Bluetooth 5.0 (BLE Mesh) stack in nRF52832 chip?

Hello Sir / Madam,

I want to load the BLE 5.0 (BLE Mesh) stack in nRF52832 chip.

Where I can find the latest Bluetooth 5.0 (BLE Mesh) stack on internet? Can you suggest any link to download the stack ... (more)

30
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answers
Last activity 2018-01-17 09:12:43 +0200 by Raghav Iyer

SDK 14.0.2 multirole lesc segger embedded studio project

Hi,

I am using the sparkfun nrf52832 breakout board with segger jlink and softdevice 5.1.0, I am not using the DK board.

I modified the BLE peripheral uart ses project and added the necessary includes and files to ... (more)

38
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1
vote
2
answers
Last activity 2018-01-17 07:53:35 +0200 by Xaerdna

Flash Thingy firmware using NrfGo

I am trying to flash custom firmware to Thingy using nrf52dk and nrfgostudio.

I have attached a cable from the debug out port on the DK to Thingy, and followed the steps here: https://nordicsemiconductor.github.io...

However, in NrfGo ... (more)

34
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no
votes
2
answers
Last activity 2018-01-16 16:20:03 +0200 by catelain

NRF_POWER utilisation make reboot the ship?

Hi,

I try to enable the ram retention function. (Bank 4) So i used the POWER structure

NRF_POWER->RAM[4].POWERSET |= (POWER_RAM_POWER_S0POWER_On << POWER_RAM_POWER_S0POWER_Pos); NRF_POWER->RAM[4].POWERSET |= (POWER_RAM_POWER_S0RETENTION_On << POWER_RAM_POWER_S0RETENTION_Pos);

This instructions make constantly reset the board. Did you have a ... (more)

53
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3
votes
no
answers
Last activity 2018-01-16 16:16:42 +0100 by 2rp

nRF Sniffer version 2 (beta) not working with nRF52 DK

Cannot get nRF Sniffer version 2 (beta) to work properly with nRF52 DK running the sniffer_pca10040_51296aa.hex: - Windows 7 64-bit - nRF Sniffer 2.0.0-1.beta - Wireshark 2.4.3 - Python 2.7.14 - pyserial 3.4 - nRFgo Studio 1 ... (more)

62
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no
votes
1
answer
Last activity 2018-01-16 13:14:51 +0200 by run_ar

A few questions about getting started with crystals.

Hi to everyone!

It's the first time I use and program clocks in a device. I'm very lost with crystals, power management and this stuff.

I have a custom board with two crystals: one is high frecuency and ... (more)

312
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1
vote
2
answers
Last activity 2018-01-16 08:08:03 +0200 by Bjørn Spockeli flag of Norway

nrf52 Bootloader_secure_ble

Hello, I am using nrf52 with sdk 13.0.0. Bootloader_secure_ble gives error while compiling. What should I do ?

        Error[Lt009]: Inconsistent wchar_t size 
        micro_ecc_lib_uECC.c.o(micro_ecc_lib_nrf52.a) has wchar_t size 16 bits 
        app_error_weak.o and 66 other objects ...
(more)

13
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no
answers
Last activity 2018-01-16 02:57:50 +0200 by MichaelNordicUser

NRF_ERROR_NOT_SUPPORTED when adding GATT service changed characteristic

I would like to be able to use the Nordic Connect app for debugging and be able to observe the current UUIDs/handles of my attributes as I change them.

I have attempted to connect a perihperal and refresh the ... (more)

74
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no
votes
1
answer
Last activity 2018-01-13 07:47:42 +0200 by J.Kwon

UUIDs and handles for old attributes do not reflect new values on flashing

I spent a few hours trying to change the base UUID and handles of the attributes of the Blinky peripheral app, just the one service and the button and LED characteristics (three attributes total plus the base UUID in the ... (more)

25
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1
vote
1
answer
Last activity 2018-01-12 16:10:36 +0200 by Torbjørn Øvrebekk

nRF52832 unmodulated carrier via timeslot?

Hello,

my usecase is the following: I'd like to use SoftDevice for BLE Advertising / Scanning - every now and then I'd like to "pause" BLE for a few miliseconds and send data via an unmodulated carrier using on-off-keying. However ... (more)

211
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1
vote
2
answers
Last activity 2018-01-12 13:44:06 +0200 by Hung Bui

Low level clock

Hello,

I need time synchronization between the two devices. At the same time I want to use the standard means of bluetooth, synchronizing the clock of the connected devices with each other.

Am I able to get the time from ... (more)

51
views
1
vote
1
answer
Last activity 2018-01-11 21:53:01 +0200 by dhinojosac

ERROR 4 [NRF_ERROR_NO_MEM] in nRF52832

I'm using nRF52832 SDK board with softdevice s132_nrf52_5.0.0. The error appears when I try to load it to the board, right on line 1247 where it initializes the NUS service (nordic uart service).

static void services_init(void ...
(more)

36
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no
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no
answers
Last activity 2018-01-11 21:09:58 +0200 by Harshil

Why UART packet is terminated due to NULL character?

Is there a way around the issue where bluetooth communication acting as a pass-though terminates the packet whenever null character is found in the packet.

SDK: nRF5_SDK_12.0.0_12f24da

38
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no
votes
no
answers
Last activity 2018-01-11 14:50:34 +0200 by lalit-tmt

How to flash Fw to nrf52 thingy

We want to flash ble_peripheral over nrf52. How can we proceed? we use the code from following link when we try compile this code in segger studio we get following errors..

https://github.com/NordicPlayground/n...

When we try to ... (more)

49
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1
vote
2
answers
Last activity 2018-01-11 08:54:38 +0100 by David

nrf52832 executing TWI function from app_timer handler

Hello,

When i execute a function that uses TWI from a timer handler the NRF gets stuck. I assumed that this issue occurs because of interrupt priority so i gave the TWI a higher priority then the priority of APP_TIMER ... (more)

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