# 23,725 questions

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## How to set softdevice for CE certification test EN300328

Hi everyone. For our product, we need to accomplish tests for CE certification, in accordance with regulations EN300328 paragraph 5.4.10. How can we set the softdevice s310 v.3 of our chip nrf51422 for be able to perform ... (more)

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## NRF52832 doesn't work properly on mobile phones

We have a device with a main MCU connected to a NRF52832 for BLE communication. Our device have Battery, Heartrate and a custom service. The first implementation used a Sparkfun breakout board and tests were made using Android and iOS ... (more)

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## after sd_flash_page_erase softdevice does not generate event

Hi,

I managed to get dfu working in application (with hrs). But on the last attempt to erase page with bootloader settings there is no event generated from softdevice and I get stuck on attempt to store new settings. When ... (more)

28
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## IAR MDK With Multiple IAR Versions Installed

A while ago I asked this question https://devzone.nordicsemi.com/questi....

Yesterday I re-installed MDK 8.11 after a computer crash and I had IAR version 7.60.1 and version 8.11.2 installed. When I ran the ... (more)

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## SPIM DMA nrf52840

Hi

Is there a sample code for SPIM DMA nrf52840? I only found smaple code for SPI in the development kit. Thanks for helping.

Best Regards ZQ

200
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## BLE Mesh 1.0 now approved

What is the timeline for nRF52x support of the new BLE mesh standard?

47
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## How do I know I2S transfer finished using SDK's I2S driver

When using SDK v13's I2S driver, the data to send is filled via data_handler callback. How do I fill last block data? Assume i2s buffer size is 2000, then every 1000 words sent I have to prepare the next ... (more)

23
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## pstorage_update() not working when called before start_bootloader()

Hello iam using softdevice 110 and SDK 10.0.0, i have implimented dfu in my project, i want to update a region in EEPROM by calling pstorage_update() function before calling start_bootloader() in dfu_app_handler.c, i have written code in ... (more)

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## Custom ble service creation

I am trying to make custom BLE service to send the data from one nRF52832 to another nRF52832 but we followed the below tutorial "Bluetooth low energy Advertising, a beginner's tutorial, services, characteristics" but we are not getting proper ... (more)

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## How to run OTA on BLE Nano

dear all, i need your help.

Where we are: We use mbed software developer platform. We have BLE Nano V1.5 + MK20 USB Board V1.0 from RedBear. We are able to generate desired program (analog sensor reading) and forward ... (more)

41
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## Find a service characteristics' handles

Hello,

I am implementing a custom service with several characteristics, one of which is the current temperature. A second characteristic notifies the user if the temperature is above a predefined level, so I would like this second characteristic to be ... (more)

44
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## M905 for Nrf52832 Chip Module Soldering Problem

we are facing problem with smt M905 module. is there any basic error with this module pad? smt factory in china failed several times to solder this module.

43
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## PCB antenna or Chip antenna?

Hi All,

This is my first time i am designing a PCB for nrf52840, I need a suggestion regarding the antenna to be used. I am going to have an application over BLE. Which antenna should i use in my ... (more)

45
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1
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2

## TWI stops working - SDA bus always LOW

Hi!

I'm developing a project with nrf52832 and I'm getting some problems. The micro is only communicating with an accelerometer (MMA8453) and after some time the communication stops. Using a digital analyzer is possible observe that the SDA ... (more)

59
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## Uart + BLE throws NRF_DRV_UART_EVT_ERROR

Hi I am using SDK 12.3.0 with softdevice s130 v2. When I try to combine ble_app_hrs_peripheral code with app_uart.c, uart module gives error NRF_DRV_UART_EVT_ERROR in uart_irq_handler. I have enabled uart by using APP_UART_ENABLED and UART_ENABLED under c ... (more)

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## failed pm_peers_delete causes NRF_ERROR_STORAGE_FULL error from pm_conn_secure

I'm using SDK 12.3 and SoftDevice S130 2.0.1 and trying to secure a BLE link with OOB. The nordic board is running as a central and makes a new bonding to a peripheral every time it ... (more)

67
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## Examples in the NRF52 SDK that show an example of very frequent advertising data packet intervals?

In the examples directory of the NRF52-SDK are there any examples that demonstrate a peripheral sending advertising packets at a very frequent rate?

28
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## S140 initialisation errors on nRF52840 if RTC2 interrupt enabled

I'm testing a custom application with the following configuration:

• Custom app based on the ble_app_pwr_profiling SDK example.
• Using SDK 13.1
• S140 SoftDevice s140_nrf52840_5.0.0-2.alpha_softdevice.hex
• PCA10056 development board, nRF52840

I've modified the example to configure ... (more)

18
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Considering that as soon as the connection is established (GAP Peripheral device receives CONNECT_REQ packet) and advertising is over. Is it possible once the connection is established to make the device not discoverable and keep this connection running? Does the ... (more)

34
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## Smartphone as peripheral

Can the smart phones or tablets be configured as a peripheral? If yes, why is this not common? Are there any limitations if a tablet/phone is configured as a peripheral device?

We are looking to see if we can ... (more)

133
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## Multiperipheral UART Example

I am using 3 nrf52 DKs with S132 and SDK13 to try and implement a combination of the multilink and UART examples. I started with the ble_app_uart_c example and added the relevant code from the ble_app_multilink_central example to connect to ... (more)

31
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## setBeaconLayout on Android-Beacon Library

Has anyone successfully used the Android-Beacon Library to detect the nRF51822 Beacon on and Android application? I tried several different layouts but I just can't detect it.

public class MainActivity extends AppCompatActivity implements BeaconConsumer {

protected static final String TAG ...
(more)

42
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## Changing SD (s110->s130) and wrong memory organization

Hello,

I'd like to upgrade nrf51822 QFAC custom board firmware via DFU and change SoftDevice from s110 to s130. Because of larger (than s110) size of s130 I haven't enough space for my application with current FLASH memory ... (more)

1k
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## nRF51822 - Connect without advertising

In short:

• Is it possible to connect a nRF51822 s110 peripheral from a central without the need for sending advertising packets (by peripheral)?
• If (hopefully) yes, what's the required steps (shure, the central must know the MAC)?

A stupid ... (more)

45
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1
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1

## Strategy for sending alert to phone from nrf52

Hello,

I am trying to create an application that sends a notification from the nrf52 to a smartphone when a sensor reading exceeds a certain value. Would the immediate alert service be appropriate here, or should I just add a ... (more)

110
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## Issue Resolving DNS in Border Router

I'm following the tutorial in the NRF52840 SDK on setting up a Thread Border Router hereand I've run into some issues during testing. For one, I'm trying to resolve ipv4.google.com on the dev kit ... (more)

36
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Hi everyone;

Best Regards

51
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## External NRF52832 Program with NRF52DK - Reset not working

Hi,

I'm trying to program an external NRF52832 board with the NRF52-DK, per the instructions in this post.

Programming works fine, but the code doesn't execute after reset. I'm using nrfjprog (on OSX) with --chiperase --program and ... (more)

38
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2
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## Programming nRF51422 externally

Hi,

I have designed and made a PCB with the nRF51422 chip on it. I am programming the chip externally using the P20 header pins on the nRF51-DK. I am not sure whether the chip on the PCB is being ... (more)

56
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## 52832 ADC just do samle one time

Hi,

I'm using the ADC of nRF52832 on nRF5 SDK V12.2. The setting as attachment. I found that it just do sample one time. But I have use timer to call nrf_drv_saadc_sample() to the SAADC sample task every ... (more)

#### Statistics

• Total users: 23023
• Latest user: Numbers Arnott
• Resolved questions: 9857
• Total questions: 23725

## Recent blog posts

• ### Introducing nRF5 SDK for Mesh

Posted 2017-07-20 09:42:44 by Pär H

Posted 2017-07-19 06:53:42 by Mohammad Afaneh
• ### Unique Thread/Bluetooth multiprotocol solution with nRF5 SDK for Thread and nRF52840 SoC by Nordic

Posted 2017-07-14 10:31:56 by Krzysztof Loska
• ### nRF Connect macros (currently Android only)

Posted 2017-07-14 13:29:14 by Aleksander Nowakowski
• ### Power Optimization — From 3 to 7 Months on a Single Charge

Posted 2017-07-10 14:34:39 by Yaniv Nis

## Recent questions

• ### Real UART TX transmit depth?

Posted 2017-07-22 01:21:21 by samsonc