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Last activity 2018-01-12 08:41:39 +0200 by endnode

Determining Data Rx in Multilink Central NUS

I'm working in creating BLE NUS network using 3 NRF51822 FAB, one board has a role as central and 2 other as peripheral. Now I'm able to send string (via BLE NUS) from central to peripheral and vice ... (more)

20
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answers
Last activity 2018-01-05 15:47:17 +0200 by SaiTeja

ble_app_uart_c central sometimes not discovering service from peripheral

Hello, I configured nrf52832 as central. I am using ble_app_uart_c example to set the IC as central. And esp32 module is my peripheral. I am able to establish connection and achieved bidirectional communication.

But Sometimes, my central is not discovering ... (more)

43
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answers
Last activity 2017-12-28 05:11:34 +0100 by SaiTeja

Multilink central with NUS UART Client

Hello all, I would like to establish connection between single central and two peripherals for bidirectional communication. I edited ble_multilink_central example and created multiple instances NUS Clients of it. My code is getting compiled and I uploaded it to NRF52DK ... (more)

52
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no
votes
1
answer
Last activity 2017-12-21 11:51:52 +0200 by Hung Bui

nrf52 nordic uart services

Hello,

I've got some trouble using Nordic Uart Services,

I correctly add the library to my project.

I can receive data from different devices. But when I want to send data over ble, the soft device Assert and make ... (more)

91
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no
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no
answers
Last activity 2017-12-18 15:33:12 +0200 by krnd

Maximum ATT MTU for BLE NUS

Hi,

What is the maximum ATT MTU size for the BLE NUS?

While programming my BLE NUS server application I constantly ran into the problem that my MTU and length updates cause NRF_ERROR_INVALID_PARAM errors. I solved it by setting the ... (more)

43
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no
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answers
Last activity 2017-12-16 11:11:00 +0100 by Jax VierMTech

Send multiple nus packages once

Hi

I using nrf52832 to implement a high throughput transmit sensor raw data. I found post here talk about send multiple-packages once. I also found this, but I couldn’t compile on keil c and test it. Does any sample ... (more)

68
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no
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2
answers
Last activity 2017-12-11 17:20:52 +0200 by Torbjørn Øvrebekk

When is NUS ready? [closed]

I'm using SDK 14.2 (not really relevant I guess) on an nRF52832. The application requires a greeting to be sent to the remote through NUS as soon as a connection is made. The first tranfers are always lost ... (more)

48
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no
votes
1
answer
Last activity 2017-11-26 09:41:51 +0100 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)

44
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no
votes
1
answer
Last activity 2017-11-23 11:39:15 +0200 by RohanKadam

Unable to read characteristics complete value

Hi,

We are performing data transfer using NUS service (BLE-UART).

  1. Data passed is a 11-character string.
  2. READ and NOTIFY permissions are provided for Tx characteristic in NUS service.

The string is visible in nrf-Connect Android App's Log on enabling ... (more)

67
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1
vote
1
answer
Last activity 2017-11-16 08:31:26 +0100 by RohanKadam

BLE NUS Receiver

Hi,

We have a BLE Tx (Transmitter) and BLE Rx (Receiver)

BLE Tx : Nordic nrf51822 (Role: Peripheral, Server)

BLE Rx : Other chip (Role: Central,Client)

BLE Service used : NUS Service

On receiver side/BLE Rx,

We are able to establish ... (more)

65
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no
votes
1
answer
Last activity 2017-11-09 14:23:42 +0200 by Petter Myhre flag of Norway

Can't use BLE_NUS_C_EVT_DISCONNECTED on multilink

The BLE_NUS_C_EVT_DISCONNECTED of the ble_nus_c_evt_handler() give a conn_handle = BLE_CONN_HANDLE_INVALID. So it's not possible to know which peripheral got disconnected when multiple connections are allowed.

48
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3
votes
1
answer
Last activity 2017-11-08 06:54:43 +0200 by Sorrow91

Using NUS/CTS/BAS together

Hey guys,

I'm using the SDK 14.0 on my nRF52832 with the SoftDevice 132, my IDE is Keil.

And I merged the ble_app_uart example with the ble_app_cts_c example and the ble_app_proximity example from the SDK.

If I start ... (more)

155
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no
votes
1
answer
Last activity 2017-11-04 01:45:04 +0200 by Bjørn Spockeli flag of Norway

How can I use buttonless DFU with NUS

I am using SDK 14.1.0 S132 for PCA0040 board

i want to combine the next two examples:

examples\ble_peripheral\ble_app_buttonless_dfu

and

examples\ble_peripheral\ble_app_uart

**but I got NO_MEM error after

err_code = ble_dfu_buttonless_async_svci_init(); APP_ERROR_CHECK(err_code);

anyone help to find ... (more)

47
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no
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no
answers
Last activity 2017-10-07 22:48:33 +0200 by Sorrow91

BLE_NUS RX strcmp [closed]

Hey all,

I'm trying to get the Nordic UART service with the nRF Toolbox App (Android). But always when I send "Hello" from the nRF Toolbox App, for example, I don't only get "Hello". In putty I can ... (more)

41
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1
vote
1
answer
Last activity 2017-09-26 20:40:16 +0100 by endnode

How the nus mode is automatically subcontracted and sent efficiently? [closed]

Hi, there

  1. NRF51822
  2. SDK9.0.0 and S110

How to subcontract in uart nus mode to ensure that each packet does not exceed 20 bytes and is sent as quickly as possible? The official demo must pass the special character ... (more)

140
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no
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no
answers
Last activity 2017-09-14 07:01:13 +0100 by Jake

How to enable BLE Serivce within nrf5_SDK_for_Mesh

I want to enable BLE's NUS Service(in Old SDK, nRF5_SDK) with in nrf5_SDK_for_Mesh. Is it possible?

I'm failing, as starting of this, to use Softdevice for parallel use of both of Bluetooth mesh and BLE. Please help me.

73
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no
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no
answers
Last activity 2017-08-29 20:48:56 +0200 by zachtos

NRF52 piconet with Nordic UART Service Client

Hello, I have had luck in Keil making two NRF52 connect with NUS, central and peripheral. My goal is to have one central speak to multiple peripheral at same time via a piconet. The LED blink example works to talk ... (more)

38
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no
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no
answers
Last activity 2017-08-24 13:44:41 +0100 by Fabien Comte flag of France

Secured with passkey NUS and NUS_C

Hello,

Is there some exemple about how to secure a NUS connection between two nRF5x (one NUS, one NUS_C) ? Dans it use a preshared passkey ? Is that secured (man in the middle, privacy, ...) ?

191
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no
votes
1
answer
Last activity 2017-08-23 14:46:42 +0200 by jakub

CLI UART + NUS

Hello,

I'm trying to make CLI working with UART and BLE (NUS) backend simultaneously. Starting point is CLI example from SDK 14. What should I enable in sdk_config.h and how shuould I intialize CLI with UART and NUS ... (more)

119
views
1
vote
1
answer
Last activity 2017-07-11 14:18:13 +0100 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)

118
views
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)

402
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no
votes
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)

128
views
1
vote
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)

119
views
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)

233
views
1
vote
1
answer
Last activity 2017-05-15 20:30:41 +0100 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)

177
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2
votes
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)

213
views
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)

221
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no
votes
2
answers
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)

123
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no
votes
1
answer
Last activity 2017-03-07 21:25:17 +0100 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)

364
views
1
vote
1
answer
Last activity 2017-02-20 19:01:53 +0100 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)

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