# 183 questions

Tagged
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## BLE MESH Build Fails on Linux when running bootstrap, unknown command add_pc_lint

The error "Unknown command add_pc_lint" appears when running the bootstrap command during setup. It looks like PC-Lint is an application for windows for software debugging. Is there a way around this for Linux? I see that others have compiled this ... (more)

53
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## How to write an iOS app for a simple BLE - UART in swift?

I'm writing a custom app to perform a UART service between an nRF51822 module and iOS device.

https://github.com/nar0909/nRFSampleS...

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## Which SDK should I use for NRF52840?

Hello ,

We are going to use nrf52840 for our product. We are going to use enhanced shockburst to transfer the data to other nrf52480. We are also performing sensor fusion. We have also a wifi module interfaced via UART. Which ... (more)

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## gyroscope services

hi team, i am using nrf52840. is there any hidden services placed in nrf connect app android for gyroscope or we want to create our own services. and also one doubt wat is the twi_scl and twi_sda pin for pca ... (more)

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## Using FDS with BLE and Scheduler

Hey guys,

I'm trying to make the FDS work with BLE and the scheduler. But something doesn't right when I use the Softdevice and scheduler with the FDS.

Must I register something in my ble_stack_init(), I read something ... (more)

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## SDK 12.3.0 - why I must flash mbed build first to make SDK build work on nRF51 DK?

Hi there,

I wonder why I have to flash my nRF51 DK using mbed build first to make the SDK build work?

I received my 2 nRF51 DK today and I tried the first one in the following step using ... (more)

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## Current Date Time caracteristics

Hi, everyone, I develope the project with BLE support. In my project I need to define the time server. For this purpose I tried to find any example reffered to it, but no example was found neither in your project ... (more)

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## nRF Connect PC Not Receiving BLE Notification

I have an application running on an nRF52 with the S332 softdevice which is a server which exposes a a few services each with a few characteristics. I am using the Nordic SDK for the GATTS implementation. One of my ... (more)

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## mesh health model

How is the health model supposed to work? I'm currently doing some tests with the light switch example and I don't really understand the different roles of the nodes in the health model. Does the health client send ... (more)

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## esb handler crash

I am trying to use ESB and BLE concurrently on NRF51822 SDK v11 SD130.. The BLE part is working fine but the ESB part keep causing error randomly. I put a break-point in app_error_handler and found that this is related ... (more)

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## sd_xxx() sometimes returns NRF_ERROR_INVALID_STATE when connection and disconnection are repeated alternately and quickly.

Hi,

I'm using SDK13.0.0 and softdevice S132 v.4.0.2.

I sometimes get NRF_ERROR_INVALID_STATE from sd_xxx() in the function registered to ble_evt_dispatch() when connection and disconnection are repeated alternately and quickly. I suspect that sd_xxx() is ... (more)

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## porting SDK13 ble hids app to SDK14

I'm experiencing issues when porting a working app based on the BLE HIDS examples from SDK13 to SDK14. I now basically rebuilt the application from the SDK14 hids keyboard example, but I had to make a few changes to ... (more)

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## SD Write Problem

Hi Everyone,

I am trying to record data from ADC to a SD card every 500ms using nrf52832. I am following the fatfs example. Before I had a problem whereby every approximately 10s I would lose a few samples from ... (more)

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## Drivers from nRF5_SDK to Mesh SDK

Hello,

I would like to add the ST7735 driver from the nRF5_SDK to the Mesh SDK along with the necessary components (SPI,..). I copied the entire components directory to my Mesh SDK. But I have an issue with the cmake ... (more)

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## Latest nRFConnect doesn't see PCA10031

I recently updated my nRFConnect version to 2.2.1, which alos updated my Command Line Nordic tools. After this update, nRFConnect is "Unable to read connectivity firmware version: for 680401958: Error occured when get device info. Errorcode: CouldNotFindJproDLL (0x2 ... (more)

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## GATT Error 133 (0x85) Android 6+ nrf51

Hi everyone,

We're using our own customized BLE service with nrf51 on the one side and Android Smartphone on the other. While connecting to the GATT I'm getting Error 133 (in onConnectionStateChange()). The frequency depends on the phone ... (more)

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## nRF51822 - fail to upload device firmware through BLE bootloader. ( used to be good)

HI,

I am using nRF51822 S130, SDK12.3.0

I created private key for application code and public key for bootloader. Just few days ago, the zip file can upload to the device ( when device in DFU mode ) through nRF ... (more)

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## nRF51822 BLE and SPI slave

Hi,

I am working with the BLE Nano module and the mbed online compiler. I have the Nano acting as an SPI slave. The problem occurs when I try to add BLE functionality. As soon as I add the ble ... (more)

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## Why does my scan with whitelist fail?

HEllo,

I am trying to set up a whitelist advertising and scanning, and while the advertising seems to go fine, I am getting an APP_ERROR:ERROR:Fatal on my central while scanning. Why is this happening? Should I set something ... (more)

39
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## Sending BLE Authentication to Nordic Device (NUS)

I have a device that runs with nRF51 chip with the NRF UART Service (NUS). I have a Raspberry Pi 3 and I want them to communicate.

The device requires an authentication packet that needs to be sent within the ... (more)

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## Adding Sensor Model to bluetooth 5 mesh

Hi Support Team,

I am trying to create the custom model - as far as I know there are two types of models possible in bluetooth 5 mesh - SIG defined and vendor specific.

Example given is for simple on-off model - nrf5_SDK_for_Mesh_v0 ... (more)

64
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## Advertising and scanning not starting immediately - NRF52840

Hi,

I'm working on app based on ATT_MTU Throughput Example from SDK 13.1, but I added Thread support and now working with Thread SDK 0.10.0. I have a problem with advertising and scanning - both are not ... (more)

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## DeviceScan uses the android studio with miniSdkVersion newer than SDK21

Hi: I download the google official example "android-BluetoothLeGatt" from github In the original code, the SDK26 is used, but it can not find any BLE device.

If the minSdkVersion is modified as 21, it can works proper.

Does anyone suffer ... (more)

27
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## BLE beacon callback

Is there any callback interface of sent-beacon activity that I can use in BLE s140?

I want to change the content of the beacon every time I send one. So I want to use a callback function after every beacon ... (more)

32
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## lost advertising after ble disconnect

hi, i'm newbee in BLE,now i have a trouble about advertising in NRF51822.

in my project,after BLE disconnect, I can't see BLE again that mean BLE can't advertising continuously.

t tried in example in SDk11 ... (more)

56
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## Bluetooth HCI snoop log analyzer for Mac? (GATT_INTERNAL_ERROR)

Is there a good Mac log analyzer for Android's btsnoop_HCI.log file?

I'm trying to debug an Error 0x81 (GATT_INTERNAL_ERROR) that is being returned when I try to write characteristic 2a52 (the Record Access Control Point) in a ... (more)

33
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## Data transfer via DFU

My example has an in-flash-memory data file that needs to be updated much more often than the code. I thought of using DFU for this and like it says here..

https://devzone.nordicsemi.com/questi...

.. implementing a new "filetype". Has ... (more)

35
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## Connecting with nfc_ble_pair_lib

I am using the ble_app_hrs_nfc_pairing example (sdk 14.0.0) on my NRF52840 with the s140 soft device. I am able to bond with my phone (Android 8.0.0 Oreo) by tapping the sensor, and BLE_GAP_EVT_CONNECTED and BLE_GAP_EVT_CONN_SEC_UPDATE handlers ... (more)

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I'm using the 1.0.1 nRF Sniffer and 1.10.10 Wireshark on Windows 10 64bit. The firmware 1.0.1 is programmed to nRF51822 dongle using Jlink 6.12a. The exe works fine when no device is ... (more)

97
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## Help to create mesh network!

Hi! I need your help! I need to create some mesh network consists of simple devices (A) which could collect mac addresses of all visible Bluetooth devices (C) and send it through similar devices to the main device (B). So ... (more)

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• Total users: 25687
• Latest user: Randi Marriott
• Resolved questions: 11282
• Total questions: 27855

## Recent blog posts

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