# 2,260 questions

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## nRF8001 What is the maximum data rate with peered device?

As stated in standard the maximum data rate is 0.27Mbps. So is that is true for nRF8001 ??

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## ble_gap_data_length_params_t range

Hi

We are trying to port our app from softdevice v3.0.0 to softdevice v5.0.0. We note that the data length and bandwidth configuration procedure has changed drastically, including the introduction of the sd_ble_gap_data_length_update() function. My question ... (more)

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## Bluetooth and USB at the same time on nRF52840

Hello,

Do you have a soft device that integrates both Bluetooth and USB on the nRF52840 ?

I want to program a firmware that uses both and I'm wondering if you have ready-to-use examples on that ?

Thanks

Benoît

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## What is the best way to automate bluetooth connection?

The product that is in development could be used by the 100s at the same venue, if we let customers picks their device from a list there will be a lot of wrong connections and as such we decided to ... (more)

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## Quickest and Easiest nRF52x Development for key fob

Hi all,

I'm completely new to wireless connectivity development and I am looking to use a nRF52832 module for simply communicating button presses between a power optimized coin cell key fob peripheral device and a central base station. The ... (more)

69
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1
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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)

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## How to wire I2C for NRF 51822 with MPU 9250.What SDK should I use?

I am trying to wire NRF 51822 over I2C with MPU 9250. If I should use the GPIO's where should I initialize the Pins . What SDK should I use?

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## Restrict Range

hi,

Is it possible to restrict range / rssi value upto certain range.?

I want to connect ble within 2 meter only. No device should connect after 2 meter.

kindly support.

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Hi,

I'm working with nRF52832 chip following the example "ble_app_beacon". I see the advertising packet is limited to 31 bytes only. However, I'd like to take an advantage of BLE 5 spec and increase the size to 255 ... (more)

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## Android Bluetooth Mesh sample app

Hi!

Thank you for providing an SDK for BT mesh so early. I'm wondering if you also provide an Android (or perhaps iOS) mobile app that interacts with BT mesh, e.g. by acting as a provisioner through a ... (more)

54
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1
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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

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## SDK 14 migration: can't advertise. fstorage busy.

Hi there.

I recently migrated from SDK 13 to SDK 14.0.0 and followed the migration guide in detail. I've found that when I try to advertise, ble_advertising_start() will find that fstorage is in use and bail out ... (more)

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## SoftDevice s140 5 nRF52840 Preview DK Issues

Hello,

I am trying to migrate to the latest S140 SoftDevice, but the migration document leaves a lot to be desired and is missing information. I've had issues running standard applications with s140_nrf52840_5.0.0-3.alpha where it just ... (more)

304
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3

## Segger Embedded Studio(Crossworks). Write data to UICR.

Hello. I am trying to port bootloader project from SDK to SES. But I do not know how to write data to UICR.

Steps what I've done:

1) My nRF52832_xAA_MemoryMap.xml looks like (I've added UICR section):

<code ... (more)

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2

## How to capture the screenshot of the data collected on the J-link RTT viewer V5.10n

ru.txtra.txtCan someone help out in this. There is no option to capture the data in RTT. Somehow I am not able to take a screenshot directly from the Windows on my MAC.

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## 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
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1
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1

I've been banging my head against this for a couple days now, and need some help. First the layout.

In our setup we have an accelerometer with a movement interrupt pin (high when movement detected) tied to a sense ... (more)

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## nRF52 spurious resets with SDK12.2.0 - How to resolve?

Hello,

we have developed a solar powered LED module with an additional battery. It is based on the nrf52832. The WDT and TWI is mainly used and for BLE the soft device is applied. From time to time, the NRF ... (more)

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## NRF51 Vs NRF52

Hello Nordics Developer I'm from indonesia, i'm electronics designer, i have develop new products using BLE, first develop i'm using nrf51 series but And my boss ask is there any better than nrf51? In indonesia enough difficulty ... (more)

63
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2

## PCA10040 problem with ble example program

First of all I want to say hello. I'm new in nRF52 devzone and I have problem with ble_app_uart and ble_app_hrs programs. I use pca10040 board and eclipse for flash and debug. When I flash blink and spi example ... (more)

115
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2

Hi,

I have programmed my nRF52 DK using the ble_app_beacon example from SDK 14 along with S132 V5. I have set NON_CONNECTABLE_ADV_INTERVAL to 3000. I was expecting to see advertisements on 3 channels, then a 3 second delay, then 3 ... (more)

110
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1

## Sniffer not functioning.

ppi.zipHi, I am using radio with ppi to advertize packets as shown in the mainc file attached. Even after allocating the access address of Bluetooth on line 196 as set_address0(0x8E89BED6); and advertizing channel selected as 37 as ... (more)

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## Bluetooth low energy Advertising, tutorial run on 2 x nRF52 DK's ?

Will the Bluetooth low energy advertising tutorial run on 2 x nRF52 DK's and not on 1 x nRF52 DK and 1 x nRF51 Dongle? I wish to test the capabilities of BLE 5.0 (not be limited by ... (more)

39
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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)

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## 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)

36
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1

## Star Topology Duplex Commuication

Are they any units capable of a 4 way network where every message is broadcast to the whole network? Preferably, with UART.

71
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1
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1

## how can I make nRF52832 talk to nRF51822 (BLE)

I want nRF52832 to be a central device which will take an input from nRF51822 (peripheral device). Also, Is it possible to make two nRF51822 talk to each other?

85
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1
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2

## nRF51 to nRF52 migration, can't discover services

Hi. I have some nRF51 firmware I'm migrating to the nRF52. It's a peripheral with bunch of vendor specific services, using SDK 13.0.0 and SD 132 v4.0.2.

My code builds and runs and the ... (more)

656
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2

## Using Wireshark to see the connection interval

How do I use Wireshark to see the connection interval negotiated between my nRF51822 peripheral and a central which is a mobile app? Which messages should I be looking for?

I realise it's also possible to check what gets ... (more)

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## where the actual position of the DFU_APP_DATA_RESERVED is located?

In my project, the softdevice I used was S110 I hope that some of the data can still be retained after OTA updates, in the Bootloader program code:

# define DFU_APP_DATA_RESERVED CODE_PAGE_SIZE * 4

And then within the application program code:

# define ...

(more)

#### Statistics

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• Resolved questions: 10098
• Total questions: 24488

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