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Last activity 2017-12-12 12:49:00 +0200 by Torbjørn Øvrebekk

nRF52832 Advertising Energy Profile

This is the Energy Profile that is shown for the nRF82832 and I am wondering about the RX/ switch parts. I assume these RX phases are for receiving scan requests? What happens if I set advertising mode to ADV_DIRECT_IND or ... (more)

30
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2
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1
answer
Last activity 2017-12-12 11:18:56 +0200 by Martin Børs-Lind flag of Norway

power consumption of S130 (use as peripheral only) vs S110

Hi there,

I was trying to use S110 to implement my project but found there is no more release for that after SDK 8 and I have concerns on bug fixes won't be merged back.

As S130 can work ... (more)

30
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no
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1
answer
Last activity 2017-12-12 09:03:00 +0200 by endnode

Is it possible to know the channel state information (CSI) from nRF chips?

Hi,

I'm wondering if CSI is available on nRF chips. It can be used for advanced sensing purpose. There have been tons of works on WiFi sensing through CSI. Is it by any chance stored in some registers or ... (more)

29
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no
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1
answer
Last activity 2017-12-11 16:37:20 +0200 by endnode

Can I "listen" to the data between two devices (under my control) using a third device to get rssi?

What I am trying to accomplish is to establish a connection between an iPhone (device 1) and an NRF52 (device 2), then sniff the data sent between them from a third device (also NRF52, device 3) to get an RSSI ... (more)

39
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Last activity 2017-12-09 07:50:40 +0200 by vishal

Problem with Wi-Fi communication and BLE communication?

Hi,

I am trying to send data to server using ESP8266 WiFi module interface with nRF52832 DK board via UART interface. My problem is when i sent AT command to ESP8266 it get respond but i want to set SSID ... (more)

58
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Last activity 2017-12-07 13:35:08 +0200 by Ketil

Problem discovering services with lower tier Android devices

Hello,

I have a problem when I try to use cheaper Android phones to communicate with our 52832 chip.

I can discover the peripheral and then connect, but when I device.discoverServices() the software pauses for about 10 seconds, and ... (more)

571
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1
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1
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Last activity 2017-12-06 10:30:30 +0200 by Mostafa Berg

iOS nRF Toolbox tx/rx characteristic?

Hi all, I'm using the nRF iOS Toolbox as a reference to design an app. Can someone please help me in terms of which swift code file I need to use to read and write data to the nrf51 ... (more)

24
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Last activity 2017-12-06 07:55:01 +0200 by utkarsh

Connect via external MCu

Hey, I am using WT51822-S4AT module and want the nrf51822 to connect to phone. I don't have nrf51-dk. I am using stm32f0-discovery kit. Can it be done using that kit? I searched for examples but coudn't find anything.

73
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Last activity 2017-12-06 02:20:30 +0200 by mantap

how to convert 2's complement ADXL345 data to nRF51 UART? needed help

finally I have done to implement that ADXL345 can throw data over BLE using nRF UART app service with this code. now my problem is how to change 2's complement ADXL345 data to array of string/character.

here it ... (more)

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Last activity 2017-12-05 15:00:50 +0200 by chirag lakhani

Failed to locate the pc_ble_driver shared library

Hi, We are facing issue related to pc_ble_driver shared library at the time of run script.

Traceback (most recent call last):

File "SDFTest.py", line 414, in <module> init(sys.argv[1])

File "SDFTest.py", line 70, in init from ... (more)

39
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2
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1
answer
Last activity 2017-12-04 19:26:19 +0200 by Sansei

BLE support for having multiple active connections (to multiple centrals) with NRF51822 while it works as peripheral

Hi all, I'm asking on both BLE specification version 4.0 (or more) and NRF51822 S130 about having support for multiple central connections at the same time while our NRF51822 device works as the peripheral role.

Base on the ... (more)

59
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1
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2
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Last activity 2017-12-04 14:01:57 +0200 by hunasdf

nRF51822 does not found service

Hi Guys,

I am new in BLE world, so sorry if I ask stupid questions.

I have a Simblee RFD77101 and a nRF 51822 chip. I would like to connect from nRF51 to Simblee and change data via BLE.

I ... (more)

88
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1
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2
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Last activity 2017-12-04 08:36:52 +0200 by Rahul

dumping code in NRF52832

hiii friends,

i have developed new board using nRF52832 xxAA. i am dumping code in this using nrf52 DK and it is working fine but when i am removing power from this and reconnect power it is not working. but ... (more)

86
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1
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1
answer
Last activity 2017-12-03 14:12:05 +0200 by mantap

How Receive ble_uartservice using pc serial console, but can't loopback ADXL345 data using nRF51 UART.needed help

This is my coding implementation using mbed online compiler mbed code and this is serial pc result

image description

and this is the result over BLE using nRF UART app image description

how this program using serial pc console not synchronize with ADXL345 i2c ... (more)

22
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Last activity 2017-11-30 14:55:23 +0200 by GOWTHAM

Potential clash between clear function in Pstorage and BLE NUS string function

We have a potential application where we have to send data over BLE at 3kbps and store in external flash memory at 8kbps. The last memory accessed in external flash memory is stored in internal ROM of NRF52. But when ... (more)

33
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no
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1
answer
Last activity 2017-11-30 13:26:11 +0100 by Torbjørn Øvrebekk

nrf 51822 change Tx power from +4dBm to -20dBm how much power can it save?

Hi all,

Anyone has tried if the Tx power of nrf 51822 is changed from +4dBm to -20dBm, how much power (%) can it save, in a ballpark figure?

Thank, Carl

54
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3
votes
2
answers
Last activity 2017-11-30 11:49:21 +0200 by alberto

plug and play SPI

hello:

I'm looking for a bluetooth solution for our equipment. We need a chip that simulates a serial port, what we send by SPI port, it is received in the mobile and the data sent by the mobile is ... (more)

45
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no
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Last activity 2017-11-29 23:14:47 +0200 by trigerion

SAADC with soft device and low-power mode

Hello,

yesterday I measured the current of our device and found out that it looks more as a square instead of spikes when no device was connected. Found out that when I established a BLE connection it looks as expected ... (more)

33
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no
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Last activity 2017-11-29 02:22:47 +0200 by vam5104

Issue with MPU9250 and nrf52

Hi,

I have been working on MPU9250 examples given in here.Though the program runs fine in KeilUvision 5, the output in tera term shows only 0,0,0 for Accelerometer values in X,Y and Z. I connected the ... (more)

54
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3
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2
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Last activity 2017-11-29 01:50:27 +0200 by Emil Lenngren flag of Sweden

BLE advertising and cellphone scanning

Hi, I have a general question for BLE advertising, if several BLE peripherals broadcast simultaneousl(the advertising packets contain information the peripherals want to send out), and the cellphones scan for these advertising packets to get the information. Let's ... (more)

76
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no
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1
answer
Last activity 2017-11-28 08:02:57 +0200 by Bjørn Spockeli flag of Norway

Recommend Wi-Fi SoC with Very Low power Consumption?

Hello Sir,

I have developed my application using nRF52832 chip with BLE connectivity. My device is battery operated and hence i am looking for WiFi chip with small size and very low power consumption also low cost. Is it have ... (more)

38
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no
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1
answer
Last activity 2017-11-27 15:20:28 +0100 by Bee flag of China

macOS can't download a project with SES 3.30.

Hello, everyone~

I'm trying to use mac to develop nRF52832 DK. I have installed the lastest J-Link driver and SES. I downloaded nRF5 SDK 14.2.0 and just open ble_hrs project with no modification. After I build the ... (more)

63
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no
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1
answer
Last activity 2017-11-27 12:23:04 +0200 by Jørn flag of Norway

Error 133 (0x85): GATT ERROR

Hello everyone,

I know this issue is quite recurrent but I've gone crazy reading so many different issues with android version, Connection intervals, etc. Would like to know if someone can help me looking for an answer that fits ... (more)

34
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no
votes
1
answer
Last activity 2017-11-26 09:41:51 +0200 by endnode

Why 52DK(10056) reset when I connected the nrfUART app?

Hi, I add the NUS in the ble_app_hids_mouse example which the sdk version is 14.0. There are four services in the project: dis, bas, hids and nus. When I connceted the 52DK from the nrfUART app, a reset ocurred ... (more)

83
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1
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1
answer
Last activity 2017-11-25 14:28:47 +0200 by mantap

how to use nRF51822 SDK for building connection between nRF51822 & ADXL345

I wanna build project nRF51822 using ADXL345 for accelerometer sensor that program using eclipse or keil. can you teach me how to build using nRF51822 SDK version 6 or higher... please teach me from beginning. I am newbie for this ... (more)

88
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1
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1
answer
Last activity 2017-11-24 11:47:29 +0200 by David Edwin

Do the Ble Mesh program support GATT interface now?

Hi, around July Nordic Semiconductor released this SDK which featured examples of BLE mesh that uses a dev board as provisioner.

This program is OK, but it has zero possibility of switching the role between provisioner and provisionee, moreover, since ... (more)

48
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no
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1
answer
Last activity 2017-11-23 14:20:13 +0200 by Martin Børs-Lind flag of Norway

NRF52840 battery life estimation mathematical formula

Hi,

I want to know about mathematical formula to find / estimate the battery life of Bluetooth beacon containing NRF8240. If chip is transmitting at +8 dBm and have 1000 ms of broadcast interval.

54
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1
vote
1
answer
Last activity 2017-11-22 20:17:41 +0200 by CD-3

How to find the BLE5 distance between two NRF52840 chips?

I stumbled upon Nordics video on facebook where they show how to calculate the distance between two NRF52840 Dev Kits. Link to video and article: https://devzone.nordicsemi.com/blogs/...

I have purchased several Dev Kits in hopes of being ... (more)

66
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answers
Last activity 2017-11-22 20:03:17 +0200 by enigma_231

SDK Lightswitch Demo

I was reading through the documentation and it mentions you need;

  • One PCA10028 or PCA10040 development board for the client.
    • Three development boards or dongles (PCA10028, PCA10031, or PCA10040) for the servers.

I have nRF52840 that has PCA10056, but for ... (more)

46
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1
vote
1
answer
Last activity 2017-11-22 11:15:59 +0200 by Boris

nRF51822 The access to the flash memory cause the program to fail.

Hi, everyone,

I am developing the project on nRF518522 and I must use the flash memory to save the data. The data must be saved while the device is conncted via BT with the master. For this purpose I use ... (more)

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