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Last activity 2017-07-11 14:18:13 +0200 by Antony Tom Mathews

Bond information not stored in Flash

Hi, I was in a process of developing a central device with nrf51422 in PCA10028 board with NUS service client.I use SDK v12.2.0.We have an example code in the library which I modified for multiple devices ... (more)

27
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2
votes
1
answer
Last activity 2017-07-10 09:34:54 +0200 by Rodrigo Lorenzo Leal

Problem porting BLE-NUS on nRF52832

Hi, Nordic Forum!

We have developed our own logging module backend so we can store logs in an external flash memory. But now we wanted to transmit those logs via BLE to the phone so we can have a "picture ... (more)

88
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no
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1
answer
Last activity 2017-06-06 09:54:02 +0200 by Sigurd flag of Norway

Writing hex values to characteristics using nRF Connect?

I'm programming an application that uses the NUS, and I'm trying to test my code using the Android version of nRF Connect. I'm using a nRF52832 on dev board PCA10040, and my code uses SoftDevice S132. I ... (more)

65
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1
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1
answer
Last activity 2017-05-31 11:23:56 +0200 by Hung Bui

What's the NRF Toolbox (Android App) UART's Connection INTERVAL?

What's the NRF Toolbox (Android App) UART's Connection INTERVAL?

At the SDK12's EXAMPLE's Nordic Uart Service's default connection Interval is

MIN_CONN_INTERVAL = 25ms
MAX_CONN_INTERVAL = 75ms

and this Conn Parameter is conducted by Central side (I Guess ... (more)

77
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3
votes
2
answers
Last activity 2017-05-23 08:27:45 +0200 by trdop

ANCS Code base (bonding) with NUS and strange behaviour with nRF Toolbox

Hello the Nordic Team,

I come here after a lot of research and testing and do not understand what is going on in my program. (is it Embedded or iPhone nRF Toolbox side ?)

I took the ANCS code ( nRF5_SDK_12.2 ... (more)

96
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1
vote
1
answer
Last activity 2017-05-15 20:30:41 +0200 by good_night

NRF_LOG not working with SDK12.3.0

I can't get NRF_LOG working with SDK12.3.0. Using the same main.c and sdk_config.h from SDK12.2 - here NRF_LOG is working well - I get no messages in J-Link RTT Viewer with SDK12.3.0. ANY hints ... (more)

94
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no
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3
answers
Last activity 2017-04-13 12:21:42 +0200 by RK flag of Singapore

Is it possible to refuse a connection from a central device?

I'm developing a project based on the Nordik UART Service and I wouldn't use pairing as in the example.

However I have some problem when a central device is already connected to my nRF52, if I try to ... (more)

192
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1
vote
2
answers
Last activity 2017-04-12 14:16:57 +0200 by Mostafa Berg

Broken NUS after iOS 10 upgrade

After upgrading to iOS 10, I have been unable to successfully interact with my device using the NUS. I used to use the NUS to communication with the device and retrieve stats. For example, I would send a "T" message ... (more)

132
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no
votes
1
answer
Last activity 2017-03-27 13:40:40 +0200 by Kristin flag of Norway

Is it possible NRF52 NUS service and Buttonless DFU service work together like the given example, ble_app_hrs, s132_with_dfu? [closed]

Hi,

I was trying to add buttonless DFU service along with NUS service. I used SDK v11. Taken the example ble_app_hrs, s132_with_dfu. And added my existing NUS service. I faced a problem that, both are not working together. If i ... (more)

62
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no
votes
1
answer
Last activity 2017-03-07 21:25:17 +0200 by Tarik

connect nrf51822 board with NUS profile to windows 7 (serial)

Hi,

I have a running board with NUS service (serial profile). This boards starts advertising until a remote device (android nrf UART app) connects to it. then it starts sending some data to the remote device.

My goal now, is ... (more)

199
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1
vote
1
answer
Last activity 2017-02-20 19:01:53 +0200 by Yurii G

ble_nus_string_send() busy wait or interrupt

Hi,

I am working on an application which sometimes needs to send a buffer of a couple of KB to a connected smartphone using the nordic uart service.

The function used is ble_nus_string_send() and it can send a maximum amount ... (more)

90
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no
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no
answers
Last activity 2017-01-23 10:44:59 +0200 by Punit

Ble_app_uart current consumption

I am developing a battery powered application using the Nordic UART Service.I intend to use the ble_uart peripheral example as it is , modifying it as per the application.The peripheral is battery powered and has to do both receive ... (more)

75
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no
votes
1
answer
Last activity 2016-11-07 11:53:00 +0200 by Gordon

ble_nus stops working after central connection

Hi,

I just found what looks like a bug in ble_nus.c in SDK12 - not sure how to report it so I'm just doing it as a question/answer combo.

Basically:

  • Connect to nRF5x normally (treating it as a ...
(more)

62
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1
vote
1
answer
Last activity 2016-10-28 11:12:45 +0200 by Sigurd flag of Norway

Integrated bluetooth device on windows and NUS service

Previously i've been using the nRF dongle using the BLE NUS Central example to communicate to another nRF DK with the BLE NUS Peripheral example via serial/termite and ble nus.

Could I use the integrated bluetooth device on ... (more)

142
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no
votes
1
answer
Last activity 2016-10-25 09:25:32 +0200 by Sigurd flag of Norway

Merging NUS with LBS returns NRF_ERROR_NO_MEM

Hi, I use PCA10040 v1.1 with SDK12.1 via S132 v3.

I use Keil 5.21.

After testing the LBS example, I was merging the NUS (NORDIC UART Service) to the standalone LBS example.

However, the sd_ble_gatts_service_add (which is ... (more)

223
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2
votes
1
answer
Last activity 2016-10-19 16:51:38 +0200 by Petter Myhre flag of Norway

ble_uart demo throughput is very slow

Hello Nordic,

I am using the BL600 third-party module and SDK 10. I was able to modify and compile project with GCC at examples\ble_peripheral\ble_app_uart\ for s110. It works nice, but the transfer speed is very low (around 500 ... (more)

312
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2
votes
2
answers
Last activity 2016-10-18 11:42:26 +0200 by AmiguelS

Can't find BLE Peripheral after disconnect [closed]

Hi,

After I've successfully connected my smartphone via nRF Toolbox's UART-BLE Service to my nRF52 peripheral, I tried to mimic the scenario when the devices get disconnected. This is done by disconnecting the device on the central/smartphone ... (more)

301
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no
votes
1
answer
Last activity 2016-10-12 09:20:44 +0200 by Kristin flag of Norway

Unable to receive UART-BLE from peripheral [closed]

Hi there! I'm using the nRF Toolbox's UART to test the receiving of my data stream. I'm trying to send a data array collected (from spi) in my main loop and send it via UART-BLE to my ... (more)

127
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no
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no
answers
Last activity 2016-09-08 12:00:32 +0200 by Akshat

Multilink central with nus

Hi,

I am using nRF51-DK with softdevice S130 and SDK 12.0. I am working on the BLE central role with ble_nus_c service. I am able to setup the multiple connection with central and data exchange with them. But i ... (more)

114
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2
votes
2
answers
Last activity 2016-08-25 10:13:21 +0200 by awneil

Is there a PC (win / debian) application or source for NUS?

Hello!

Nordic UART Service (NUS) is a pretty handy way of implementing a serial data transfer service over BLE. The nRF Toolbox on Android makes it very easy to test it, however I could not find any such program (or ... (more)

346
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no
votes
1
answer
Last activity 2016-08-17 14:33:57 +0200 by Petter Myhre flag of Norway

Why delay make ble_nus_string_send() totally not working?

A beginner's question.

I am using UART over BLE to send data out.

As codes below, ble_nus_string_send() works and continuously sending data out, with the Wireshark's help, I can see notification packet are always sending out.

when I ... (more)

156
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no
votes
1
answer
Last activity 2016-08-08 20:10:56 +0200 by Pavan kumar

Can I use NUS service without having the UART pins configured/connected?

Hello,

I want to use the NUS service on my BLE communication. I don't have pins connected for UART, do I need to have them? When I try to run the device, my program initializes all the blocks being ... (more)

159
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1
vote
1
answer
Last activity 2016-08-04 17:43:36 +0200 by Stefan Birnir Sverrisson flag of Iceland

Efficiently sending 'printed' data with Nordic UART

In my code, I have some 'print'-style functions that write data to a buffer, and that buffer then goes to the Nordic UART implementation. This is user code, and I don't know when it's 'done' printing. Let ... (more)

286
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no
votes
1
answer
Last activity 2016-07-28 14:22:56 +0200 by Rajneesh

nRF52DK ble_uart and DFU does not work

Hello All,

At a time either ble nus or dfu can work.

I have an problem with the services ble nus for uart and dfu does not work simultaneously means if i am adding both the services in my profile ... (more)

129
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1
vote
1
answer
Last activity 2016-07-25 19:34:42 +0200 by Sonr09

Strange problem with Scheduler plus SPI

Hello everyone! Frist of all, sorry for my broken English.

I had a timeout handler, which call by application timer every 50ms. In this function I took data from accelerometer via SPI, this method doesn't work. As I know ... (more)

272
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no
votes
1
answer
Last activity 2016-06-13 15:09:40 +0200 by Petter Myhre flag of Norway

BLE multirole implemntation

Hi,

Currently i am using ble app uart as a reference example and nus service with soft device S130 for our project. I want to use multi role example (central and peripheral), in SDK 11.0 example is given for ... (more)

478
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no
votes
1
answer
Last activity 2016-06-06 15:50:16 +0200 by Anders Strand flag of Norway

Contradictory Nordic UART Service TX/RX characteristics UUID

Hello, I find in your source code contradictory values for the UART TX and RX characteristics.

E.g. have a look at nRF toolbox (both Android and IOS) definitions: https://github.com/NordicSemiconducto...

static NSString * const uartTXCharacteristicUUIDString = @"6E400003-B5A3-F393-E0A9-E50E24DCCA9E";
static NSString ...
(more)

217
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no
votes
1
answer
Last activity 2016-05-25 13:37:33 +0200 by Milan

ble_app_uart_c dongle with passkey

Hi all,

I seek an advice on the passkey topic. Have been researching the topic all day but still have some confusion. I am running SDK 10.0 ble_app_uart example on nRF51 DK and ble_app_uart_c on the nRF51 dongle. The ... (more)

560
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2
votes
1
answer
Last activity 2016-05-11 10:59:55 +0200 by Ulrich Myhre flag of Norway

nRF52 recommended ways to reduce and deal with 3004? [closed]

Hello Pros,

I maybe running the nRF52 close to its limit. It appears to have a probability of 1/1000 to 1/2000 to hit a 3004 in a continuous time-gated packets stream.

The packets are scheduled in synchrony with ... (more)

126
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no
votes
2
answers
Last activity 2016-05-04 12:45:01 +0200 by Petter Myhre flag of Norway

How could I use NUS without service discover? [closed]

Hi.

I want to make a device which can connect each others and communicate with NUS. I need not to use any other service without NUS. I made nus_c service which is a central side service to use NUS which ... (more)

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  • Resolved questions: 9857
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  • Total questions: 23725