# 1,511 questions

Tagged
• x
69
views
1
vote
1

## BLE_APP_UART Locks up with high datarate

I'm attempting to take a 115k baud stream of NMEA sentences from a GPS sensor, and outputting it to a phone based on the UART example. While I'm not sure if BLE is perfectly capable of handling it ... (more)

54
views
1
vote
1

## how to blink the "BSP BOARD LED 1" by the "Multilink Central" exemple.

I have the devlopment kit pca 10028 with nrf51422

Thank you very much for the answer. MC

36
views
no
1

Hi, I wrote an application based on ATT_MTU Throughput Example. Now I'd like to add support for Thread protocol. Is there a possibility for adding OpenThread libraries to Keil project? Here:

http://infocenter.nordicsemi.com/inde...

is only explained ... (more)

31
views
no
2

## ble as a scanning device

Dear Guys,

I wonder if there is any possibility to have my ble as a scanning device but for softdevice version s110, I'm asking because I found all the examples are with S120 and S130.

and of course if ... (more)

34
views
no
1

## how to disable fpu on freertos nrf52 project

I use blinky_freertos demo on nrf52832,

now I want to disable FPU, but when I disable FPU in Keil MDK option->Target Floating Point Hardware Not Used, there is an error

#error This port can only be used when the ... (more)

478
views
no
2

## Problem in twi/i2c communication receiving data

Hi<br> I'm trying to communicate between nrf51-DK and arduino using twi. I was able to send data from nrf51-DK to arduino using nrf_drv_twi_tx but when I'm trying to send the data from arduino to DK, I'm ... (more)

30
views
no
no

## dfu_buttonless dosen't work

s132_nrf52_3.1.0_softdevice

PCA10040V1.1.1

HI team. I use experimental_ble_app_buttonless_dfu example to do test. But it doesn't work after I write 0x01 to develop board. It will disconnect with LightBlue , but it never go to ... (more)

48
views
no
no

## The device breakdown for several times,no matter what you do

Recently,I confronted some particular circumstance that I have never came across. The device programmed used by Jlink and Keil,so I check the address of flash,it showed as follows. Then I readed the code used by NRFgo Studio ... (more)

72
views
3
3

## Softdevice and SPI not Working Together

Hi.

I am working on a project which is using SPI and BLE together.

I wrote SPI code before without soft device. It has simple update function which is sending SPI data. And also i have an timer interrupt which ... (more)

21
views
no
no

## Including C++ libraries in bootloader

Hello Everyone,

I am new to keil and nrf51822 programming. Currently I am using softdevice s130 with hex file for bootloader from folder : nRF5_SDK_11.0.0_89a8197\examples\dfu\bootloader\hex to support over the air update.

I want to include ... (more)

83
views
1
vote
2

## Softdevice not working

Hello I'm a beginner using NRF51882, I do not have enough money to buy NDK51 Development or NRF Dongle, the solution I changed STLINK STM32 to JLINK by following tutorial on youtube https://www.youtube.com/watch?v=TkPWQ ... (more)

75
views
no
3

I am trying to program a nRF52328 present in the Taiyo Yuden EYSHJNZXZ module. I am using Keil v5, nRF sdk v 12.3, soft device 132.

I get the following error when I try to download a compiled example ... (more)

68
views
no
2

## Speed up DB Discovery

Hi,

I have a device in the central role that connects to a device with a specific name. I then do a db_discovery_start to get the handles of two of the characteristics. However, it takes a while for the BLE_DB_DISCOVERY_COMPLETE ... (more)

39
views
no
1

## Long BLE Write Error

Hi,

I am trying to write 64 bytes to a characteristic as a client and am getting the error NRF_ERROR_DATA_SIZE. The infocenter is not very helpful at indicating where the issue of size may originate from. I control both the ... (more)

93
views
no
1

## How to send large data through BLE notification using nrf52832

Hi everyone,

I am writing a program in Keil whereby I have to send a large amount of data through BLE notification in real time. The program works by having two timers, one timer is used for the ADC to ... (more)

68
views
no
1

## Setting up Keil MDK for DK nRF52832 SDK 14.0.0 example

Hello Everyone,

I'm a beginner for nRF52 and my aim is to learn and develop system on nRF52. I have bought nRF52 development board and installed Keil MDK on my system.

First Goal: - To setup Keil MDK. - To test ... (more)

35
views
1
vote
1

## SPI example programming Error

Hello All,

I've got two Rigado development boards that I'm programming with KEIL uvision 5. I've tried a few examples, for example: blinky, which program and work fine. Now I'm trying out the SPI Master and ... (more)

75
views
no
2

## Difficulty getting s132 SoftDevice working with UART example (uVision)

To start off here, I'm using a Laird DVK-BL652-1.0, which according to Laird only needs to be re-configured to use the internal oscillator, but is otherwise very similar to the PCA10040. I've done this and run the ... (more)

45
views
no
1

## Buttonless DFU with GCC

Hi,

I seem to be stuck on a rather simple problem here which I am unable to figure out. I am using SDK 12.2 with PCA10040 board.

When I am compiling the experimental buttonless DFU example with gcc, the ... (more)

35
views
no
1

## Nordic51822AA hrs project can not enter main SDK12.3 [closed]

Hi， First,i want to develop my project via SDK12.3 hrs project. I download the SD and app in hrs project in SDK12.3 via Keil ,but it does not work. I enter debug mode and find it can ... (more)

12
views
1
vote
1

## generate NRF_TWIM_EVENT_ERROR when I2C finish TX

HI team,

I use the S132 ,SDK_12.3.0 , nrf52832 PCA10040 v1.1.1 develop board. I met a problem when I do experiment with twi_sensor example code.When nrf52832 finished transfering data to sensor throug I2C. It will generate ... (more)

55
views
no
1

## How do I "capture" 100 values of a terminal, make the average , and store that in a variable?

I have variable values coming out of a terminal at all the time. I using this command:

void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action) {

if(pin  == PIN_IN_2)
{
NRF_LOG_INFO("Timer value: %d",nrf_drv_timer_capture_get(&m_timer, NRF_TIMER_CC_CHANNEL0));
nrf_drv_timer_clear(&m_timer);
}


}

My question is how do ... (more)

71
views
1
vote
1

## how do i use the notification feature in ble?

im very new to ble, i wanna use the notification feature but i cant tell how to do that. i searched some question but havnt found anything straight forward. maybe idk what to look for exactly.

any help would be ... (more)

43
views
1
vote
2

## nRF51822-QFAB(S110, SDK9.0) hid-mouse not execute.

Good morning. The sentence may not be smooth due to Google translation. please understand.

I tried to apply the hid-mouse example in SDK 9.0.0_2e23562 to nRF51822-QFAB.

The environment that is being used now Tool: Keil_v5, nRFgo Studio Soft ... (more)

205
views
1
vote
1

## Current peak

What is the peak current of NRF52832 in Bluetooth communication?

38
views
1
vote
1

## Combine softdevice into the hex file

Hello !

I'm looking to combine the softdevice into my .hex file generated by Keil. Currently, when I compile my project, Keil gives me a .hex. To implement this hex file, I have to program the board with the s132 ... (more)

58
views
2
2

## Receiving data from Mobile APP

Hi

Firstly i am coming from 8 bit world(PIC and Arduino) and not so good at c programming. ( just writing all code in main and sometimes using function) (not even use pointer much but knowing principle)

But now, i ... (more)

834
views
no
1

## PPK Question [closed]

Hello,

We encounter the problem after upgraded the PPK software. There are different results when using PPK v1.0.0 and v1.1.0.

1. Using PPK v1.0.0

2. Using PPK v1.1.0

(The highlighted spikes are active by ... (more)

52
views
no
1

## NFC Usage as GPIO Pins

Hi all,

I am trying to configure the NFC Pins for usage in an SPI application. However they do not even work for a simple nrf_gpio_pin_set after configuring them with nrf_gpio_cfg_output . Every other Pin seems to work, though.

After some ... (more)

47
views
1
vote
1

## Is it possible to read a text file(or any specific format) into nrf52 programming?

I have started working on the external file access with NRF is it possible to read or access the data from the external file into NRF programming similar to what we do in normal c program

we call a file ... (more)

#### Statistics

• Total users: 23740
• Latest user: Gretta Fusco
• Resolved questions: 10097
• Total questions: 24462

## Recent blog posts

• ### ble_app_hrs_freertos running in Atollic TrueSTUDIO

Posted 2017-08-14 02:55:30 by jmag999
• ### OLED display support for nRF52832 (SSD1306, Adafruit GFX)

Posted 2017-08-11 08:21:31 by Mahesh Venkitachalam
• ### I tried 5 different debugger IDEs for nRF52 and STM32. Here are my results.

Posted 2017-08-09 10:56:19 by Jonathan
• ### Things you should know about Bluetooth mesh

Posted 2017-08-07 12:37:22 by Eirik Midttun
• ### Support pairing on NUS profile for Central and Peripheral

Posted 2017-08-01 08:42:41 by Eugene Yu

## Recent questions

• ### Disabling S132 Softdevice when running FreeRTOS

Posted 2017-08-17 08:41:35 by x_mike
• ### Where can I get example Mesh Network NRF52840?

Posted 2017-08-17 06:34:23 by MainOFF
• ### Can bootloader in SDK V11 boot into SDK V12/13/14 application

Posted 2017-08-17 06:29:13 by Roland
• ### Disable ACK at Receiver in Enhanced Shockburst

Posted 2017-08-17 06:12:06 by Alan
• ### SPI Communication problem between nRF51 DK and nRF52 DK

Posted 2017-08-17 05:53:11 by JungWon Kim