RSS
Sort by » date activity ▼ answers views votes

# 1,674 questions

Tagged
• x
17
views
no
votes
no
answers

## changing include path of an example

Hello, I would like to copy ble_app_uart_c example to a seperate folder and work with that independently. I looked into the following thread and changed my include paths. https://devzone.nordicsemi.com/questi...

But I am unable to locate config ... (more)

33
views
no
votes
1
answer

## Thingy compilation file misssing

HI,

I tried to compile Thingy v2.1.0 with keil. And sereval file are missing.

Actually i work with your SDK 14.0.0, i find so many missing file, but not all.

Can you give me the compatible ... (more)

34
views
no
votes
no
answers

## Cannot compile NRF51 Samples [closed]

I was compiling a project(ble_app_uart and I am using PCA10028), it was not successful and KEIL5 display this: it looks like I didn't install NordicSemiconductor.nRF_DeviceFamilyPack.8.11.1.pack according to the message (in fact, I already ... (more)

49
views
1
vote
1
answer

## NFC Tag type 4 and GCC

Hi all, I am porting my 100% working code from keil to use C++ and GCC and when I use the macro NFC_NDEF_MSG_DEF to initializate the NDEF message I receive the following message from the compiler:

> >NFC.cpp(50,2 ...
(more)

25
views
no
votes
no
answers

## nRF51822 beacon example on custom board

Hi there,

I'm trying to run the beacon s130 pca20006 example on a custom board. There are 2 main differences between the pca20006 and my board:

• There is a 32 Mhz oscillator on my board
• There is no LF ...
(more)

42
views
1
vote
1
answer

## NRF51822 Secure Bootloader with app_timer

Hello everybody,

i want to add a timer to my secure bootloader example, so it waits some time and then, if no DFU is in progress, starts the beacon apllication automatic if there is one available.

I tried this by ... (more)

24
views
no
votes
no
answers

## Connect via external MCu

Hey, I am using WT51822-S4AT module and want the nrf51822 to connect to phone. I don't have nrf51-dk. I am using stm32f0-discovery kit. Can it be done using that kit? I searched for examples but coudn't find anything.

38
views
1
vote
1
answer

## How to back up common source libraries

Every time I change a common source file within Kiel, the source file is changed for every project because (obviously) is a file common to all example projects.

Is there a way, without manually copying over the libraries and change ... (more)

52
views
no
votes
1
answer

## nRF52832 with ssd1306 u8g2

Hi all. I want to add ssd1306 controlled OLED display with SPI to my project how i can hook up u8g2 library or another library for OLED display to nRF52832.

68
views
no
votes
1
answer

## Low power problem with GPIO, I2C and SPI in nrf52

Hi all, we have a problem with a project based in nrf52832 and a custom board. The project is based in "ble_app_uart" example, and also we have the following sensors:

Accelerometer gyroscope and magnetometer (BMX055 from Bosch: datasheet) Ultraviolet sensor ... (more)

59
views
1
vote
2
answers

## nRF51822 does not found service

Hi Guys,

I am new in BLE world, so sorry if I ask stupid questions.

I have a Simblee RFD77101 and a nRF 51822 chip. I would like to connect from nRF51 to Simblee and change data via BLE.

I ... (more)

88
views
1
vote
2
answers

## dumping code in NRF52832

hiii friends,

i have developed new board using nRF52832 xxAA. i am dumping code in this using nrf52 DK and it is working fine but when i am removing power from this and reconnect power it is not working. but ... (more)

39
views
1
vote
1
answer

## Problem understanding program size built by Keil

Hi, I am using Keil to build programs less than 32 KB in size. All the example program from the SDKs work and I have read that should be the case because they are all under 32 KB when compiled ... (more)

54
views
3
votes
2
answers

## plug and play SPI

hello:

I'm looking for a bluetooth solution for our equipment. We need a chip that simulates a serial port, what we send by SPI port, it is received in the mobile and the data sent by the mobile is ... (more)

29
views
1
vote
1
answer

## Long button sleep/wakeup

Hi!

I would like to use long button press to send device into sleep mode (using BSP module). Since button is tied to ground, when device goes to sleep mode, and when I release button, there is transition on IO ... (more)

24
views
no
votes
1
answer

## how to get active beacon list

Hi,

I have 5 nrf52832 and nrf52851 beacon boards. All nRFs working in the beacon mode. They all in the same room. I tring to get a list of the active beacons the module can detect. And send the list ... (more)

30
views
1
vote
1
answer

## Bug in loading the BLE code into the board

I'm using nrf52832 and building projects on it with the help of sdk 14 and sdk 11 for BLE. Now when I load my code for example the BLE HRS it loads properly with no error but on the ... (more)

33
views
no
votes
no
answers

## Issue with MPU9250 and nrf52

Hi,

I have been working on MPU9250 examples given in here.Though the program runs fine in KeilUvision 5, the output in tera term shows only 0,0,0 for Accelerometer values in X,Y and Z. I connected the ... (more)

78
views
no
votes
1
answer

## Connection between two hidden NRF51822 modules

Hello

First of all, I would like to apologize if a similar question was already asked but all this BLE matter is so broad that it defeats me. I am planning to put two NRF51822 devices into my project. I ... (more)

29
views
no
votes
no
answers

## s132 sd_flash_page_erase problem [closed]

Started out with the ble_nus-exmple. Added logging of a sensor to flash, and got it to work in SDK11, even without using the sd_flash*-routines, but writing/erasing directly using NVMC.

After upgrading, I got write working by using sd_flash_write ... (more)

57
views
no
votes
1
answer

## DFU OTA Bootloader with bonding info SDK 14.2.0 fails

Hi,

We are having problems trying to integrate support for maintaining application context and bonding info across firmware OTA updates on our NRF52 (nRF52832) based board.

The problem is that we can't find a working combination of bootloader and ... (more)

26
views
no
votes
1
answer

## [Bug Report] Memery Manager Library XXLARGE Blocks doesn't work [closed]

When I only used XXLARGE block, I got bellow error:

..\..\..\..\..\..\components\libraries\mem_manager\mem_manager.c(484): error:  #94-D: the size of an array must be greater than zero
static uint32_t m_mem_pool[
LOCK_BITMAP_ARRAY_SIZE];                                                /**< Bitmap used for book-keeping availability of all blocks ...
(more)

35
views
no
votes
no
answers

## NRF51822 UART hangs and requires power cycle

Hi,

I am making a GPS tracking system using NRF51822-QFAC. I am using 2 UARTs, one of the (external) GPRS IC and one for (external) RS485 communication.

The UART peripheral hangs after some time. I don't know if it ... (more)

157
views
no
votes
1
answer

## bluetooth questions

heelo every one ,

i want to use bluetooth to connect my nrf51822 to my smartphone can anyone help me because i don't have any idea there is any example ready to use plz

32
views
no
votes
1
answer

## configuration nrf51822 with s130 [closed]

hi everyone

i want use s130 with my ble nrf1822 i'm wondering about the modifiaction that i have to do under keil 5 in option for target for example the configuration that i'm using for s110 is in ... (more)

83
views
1
vote
1
answer

## how to use nRF51822 SDK for building connection between nRF51822 & ADXL345

I wanna build project nRF51822 using ADXL345 for accelerometer sensor that program using eclipse or keil. can you teach me how to build using nRF51822 SDK version 6 or higher... please teach me from beginning. I am newbie for this ... (more)

67
views
no
votes
1
answer

## IAR how to run after download?

hello,

For now, I have to power cycle my board or manually send "nrfjprog -f NRF52 --reset" to start the application firmware after download. I would like the application to start automatically just after download.

Does any of you what ... (more)

48
views
no
votes
1
answer

## NRF52840 battery life estimation mathematical formula

Hi,

I want to know about mathematical formula to find / estimate the battery life of Bluetooth beacon containing NRF8240. If chip is transmitting at +8 dBm and have 1000 ms of broadcast interval.

40
views
1
vote
2
answers

## eddystone example link error due to code size [closed]

I am trying to use the eddystone example I found in the ble_prepheral/ble_app_eddystone/pca10040 folder in SDK14.2 with my nRF52832 development board but I get the following link error.

._build\nrf52832_xxaa.axf: error: L6050U: The code size of ... (more)

40
views
no
votes
1
answer

## nRF51822 ，cannot find headers which were involved in imported into keil5

as this screenshots show, i add some headers to nRF_Libraries, and add the directory of the folder nRF_Libraries to Options for targets /c++/include paths,but after building project,I cannot open the header , e.g. boards.h by rightClicking ... (more)

#### Statistics

• Total users: 25660
• Latest user: dlouver
• Resolved questions: 11261
• Unanswered questions: 3818
• Total questions: 27801

or sign up

## Recent blog posts

• ### ANHUI YINGGUAN METAL PRODUCTS CO., LTD.

Posted 2017-12-14 03:35:55 by dlouver
• ### The KEY POINT of example "ble_app_uart"

Posted 2017-12-12 18:07:28 by QQ645116977
• ### Introduce smart motion controller - ELIO

Posted 2017-12-12 05:09:05 by caram5555
• ### The world's smallest breakout board compatible BTLE module: Automate your curtains for less than \$90 with BluChip!

Posted 2017-12-07 09:10:36 by Jeevan Anga
• ### Join Jumper's free beta for a Virtual nRF52832 device to streamline your R&D process

Posted 2017-11-27 12:53:04 by Yaniv Nis

## Recent questions

• ### Notify to all connections

Posted 2017-12-14 02:21:53 by Nack Tack
• ### Any way to import an ARMGCC Makefile into SES

Posted 2017-12-14 01:42:33 by eeleigh
• ### Undefined symbol ble_nus_c_on_ble_evt

Posted 2017-12-14 01:12:54 by MichaelNordicUser
• ### nRF52 Constantly Waking From WFE()

Posted 2017-12-13 23:09:12 by spizzak
• ### Thingy 2.0.1 FW flash : nrf_section_start undefined

Posted 2017-12-13 22:26:38 by sandeep