# 1,060 questions

Tagged
• x
17
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1
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## Possibilities to deploy pre Initialized Images (Pre-Set TK or LTK) in BLE

Hello,

A theoretical question at this point, but I read that there are some possibilities to set a Passkey or OoB, but I am more interested in skipping the entire Pairing process and set or change (if the pairing process ... (more)

28
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4
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## Unable to Send Messages NRF52 BLE Central Custom Device

Currently I am using the NRF52 device to connect with a custom peripheral. The current goal I am trying to reach is toggling an LED by sending the command 0x8900 through Service UUID 0x0001 with Characterisic ID 0x0002.
This is ...
(more)

45
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## Best way to send data from many sensors

Hi,

For an application I have a nRF51 at my disposal and I need to transfer about 3'000Bytes. I found in the documentation that the nRF51 can use the S130 SoftDevice which support BLE 4.2. The data I ... (more)

21
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1
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## using DFU to update softdevice

I'm using nRF52 + s132v2.0.0 + SDK11.0.0. I want to be able to update to s132v4.0.2 (or so) + SDK13.0.0 via DFU. I'm planning on modifying the bootloader start address to 0x77000 with ... (more)

31
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## Ble Nano v1.5 schematic

Hi,

I am working with a nRF51822 chip placed on a Ble Nano v1.5 board and I would like the schematic of Ble Nano v1.5. Could anyone tell me where I can find the schematic of Ble Nano?

Thank you!

26
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## How to send message from two slave to one master in nRF52

I hope to send a message from two slave to one master using nRF52 through bluetooth.

I send a message from a slave to a master with ble_app_uart_c and ble_app_uart. And I also connected two slave and one master with ... (more)

48
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1

## nRF51822 Tx power not able to set

Hello iam using softdevice 110 and SDK 10.0.0, Iam trying set tx power of nrf51822 using function sd_ble_tx_power_set(), i have tried 0dBm and 4dBm both are giving same RSSI and range, is it really configured or not how ... (more)

184
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## nRF52 DFU questions

I'm using nRF52 + SDK11.0.0 + s132 and have a couple of questions on DFU.

1. I want to use a CMSIS-DAP programmer + OpenOCD to upload the bootloader (or BL+SD+APP+setting) hex files. The application/SD boot up ...
(more)

50
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1
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1

## Is it possible to know whether advertising packet is connectable or non connectable in Android?

Hi,

Is it possible to know which type of advertising packet is being advertised by the slave i.e whether it is a connectable or a non connectable advertising packet by the master device?

47
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1

## How to detect if BLE is transmitting or not.?

Hello there,

We are using nRF52832 custom board. I2C and GPIO are working on it. Then I uploaded BLE program (which is tested on nRF52-DK) but BLE is not showing up at all. We are using PCB-printed antenna of length ... (more)

31
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## Using the SDK 11 with NRF6310

Hello, I'm working with the NRF6310 Motherboard and play with it a little with SDK 6.1, but i want to create profiles with the Bluetooth Developer Studio, so I started using the SDK 11.0 and test with ... (more)

39
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1
vote
1

## nRF51 BLE Sniffer and Wireshark Not Filtering/Tracking

Hi guys,

I installed the latest nRF Sniffer software and use Wire Shark 1.10.14. My JLink driver is 6.12A (I'm not able to access any of the earlier drivers). The command line part works fine. I ... (more)

67
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1
vote
1

## NRF52832 BLE Certification under ETSI EN 300 328

Hello,

My company recently developed a product based on your NRF52832. After some research and direct contact with some labs, we came to the conclusion that we have to test our product under the european directive EN 300 328. The ... (more)

30
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2
1

## how/best way to send 3 bytes ~10 times per second via BLE

hi,

im a little lost with BLE at the moment. all i want to do is sending 3 bytes of data (sensor data) approximately 10 times (+- 5) a second (when the uC is not sleeping) via bluetooth using my nrf52832 ... (more)

57
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1
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1

## Examples of BLE5 chaining advertising data packets

In this Nordic page, BLE 5 has a new feature of advertising extensions: http://www.nordicsemi.com/eng/Product.... Is there any example or document how to program this chaining of advertising data packets?

703
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2
3

## Device name too short?

When trying out the ble_app_hrs_freertos example in nRF5 SDK 11.0.0-2.alpha_bc3f6a0, I seem to only get 14-character long device name announcements.

This happens when using components/softdevice/s132/hex/s132_nrf52_2.0.0-7.alpha_softdevice.hex.

71
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## Is there any possible interference between the ble advertising service and the timeslots api?

We're​ developing with SDK 10.0, nrf51, softdevice 8.0.0, s110.

We started with the ble_uart_app and added our own functionality, which includes the timeslot functionality. It's supposed to reserve a slot every 8ms, for 1.5ms ... (more)

85
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3
3

## Best way to locate a buttonless device in DFU mode

I'm using the experimental buttonless DFU app in SDK v13 to automatically change a device without buttons to run in DFU mode for an update.

I'd like to automatically reconnect o the device after the mode switch in ... (more)

44
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no
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I have a custom design buildt on ble_app_uart peripheral example from SDK 12.2.0. I use a timer that I start from case BLE_ADV_FAST in on_adv_evt to send a message to a display instead of the bsp led indicator ... (more)

53
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2

## Power consumption around 2.2mA even in idle state

I am using proximity profile using NRF52 DK.When i started measuring power consumption it is not at all coming less than 2mA.

In order to make as low power ,is there any settings i need to adjust.I am ... (more)

23
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## BLE not sending more than 14 saadc values

Hi, i am using this program to send the data captured on 3 sensors from AIN0,1,2 to the mobile nrf toolbox application via BLE UART.

The problem is that when the sampling of event starts, it only sends ... (more)

48
views
1
vote
1

## Usage of S132 v4.0.x ble-features

Hello,

I just went through the release-notes of the S132 and found a passage that the s132_nrf52_4.0.0-1.alpha introduced some new ble-features like f.ex. the role-configuration for up to 20 links individually.

It also states that the ... (more)

40
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## Why 250 ms interval between subsequent reads?

I observe strange behavior while reading value for long characteristics.

I have characteristic 100 bytes long (read only). In GATT client I must read value with subsequent reads (sd_ble_gattc_read with proper offsets). Everything works fine with one exception. Subsequent packets ... (more)

14
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I am trying to use optiboot-ble with the nRF8001 and an atmega328p to allow application update over bluetooth. I have successfully compiled the bootloader and flashed it to the microcontroller. I have loaded the uart project with dfu from the ... (more)

45
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## register with gatt stack failed Error BLE android

My android app give me this "register with gatt stack failed" error on Samsung S7 marshmallow. The scenario is that I am working with 21 BLE peripherals (nrf52). I scan available devices and then connect => write data => disconnect device one ... (more)

36
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1
vote
1

## How to enable notification on NRF52832 peer?

Hi,

I develop application using BLE. In my scenario two NRF52832 operate in two different roles (Client and Server). I have ready to run app (as server) and can communicate with MCP on Android platform using notification. But have problem ... (more)

58
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1
vote
1

## How to send to BLE device AE A7 04 00 05 09 BC B7 command ?

Hi all. I am sending to BLE device AE A7 04 00 05 09 BC B7 command, getting status 0 ( success ), but do not get any updates or notifications from BLE at all. So am I doing something wrong ? Please ... (more)

57
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## Nordic UART Relay

Hi,

I'm trying to adapt the HRS/RSCS relay example from the SDK to use the Nordic UART service instead. Currently I can connect to the central just fine, but if I try to connect a peripheral to the ... (more)

134
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## Connect to phone in background

I'm trying to get my nRF52 BLE peripheral to connect to my phone while its screen is off and it's in sleep mode. Other consumer BLE peripherals that I have can connect to my phone while its screen ... (more)

23
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1

## Issue with custom service after adding DFU service

I'm using nRF52 + SDK11.0.0 + s132. I have a custom service (with a read characteristic and a separate notify characteristic). After adding the DFU service and uploading the application via a DFU (using nRF Connect), I noticed that ... (more)

#### Statistics

• Total users: 19674
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• Resolved questions: 9408
• Total questions: 22333

## Recent blog posts

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