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# 25,471 questions

37
views
no
1

## conrrent consumptio active and idle mode

Hello,

We are working with the one potential customer . they are working on battery connected beacon project below are the some queries

1) customer using nrf51822 soc and he wants interface with gps module . customer will be sending around 80bytes ... (more)

78
views
no
2

## NRF51 with PTR5518 range problems

Hi friends,

I'm using a NRF51 IC with this 4.0BLE Modul PTR5518 and i have big problems with Range. As a protocoll i use gazell. In air it is possible do get some correct signals up to 6-7 ... (more)

54
views
1
vote
2

## IS mass firmware up-gradation via ble ota possible?

Hello, I want to upgrade all my ble devices (15000 beacons ) at the same time using OTA dfu. Is that possible? If yes how can I do that? Thanks,

18
views
no
1

## fstorage compilation problem

i am compiling an code just to store a data to flash and retrieve it. i wrote the code for that i included fstorage.h,section_vars.h and added fstorage.c. I am not using any soft device now but ... (more)

376
views
10
1

## On SDK 14.x.0 only

Please Do not judge the quality of SDK based on number of entries here. This thread should be considered as part of Nordic effort to find issues and possibly give a workaround to maintain ... (more)

36
views
no
1

## How to interpret first 8 bytes of ble_l2cap_evt_t.rx.data (SDK v11 SD130 v2)

Hello

I'm trying to track lost packets in a connection by showing the sequence number of each packet received. Specifically it's about an application that sends new measurements in 3 packets each connection interval. Some measurements are divided ... (more)

35
views
1
vote
1

## 6LoWPAN with Android/iOS Mobile devices

Hi, I'm trying to create a local network between an nrf51-DK and a mobile phone, android or iOS. I've tried some examples from the IoT SDK, and the BLE connection is successful, however the interface never goes up ... (more)

20
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no
1

## nrf_ble_gatts_c.c does not call NRF_LOG_MODULE_REGISTER()

_build/app/nrf_ble_gatts_c.c.o: In function nrf_ble_gatts_c_on_db_disc_evt':
nRF5_SDK/components/ble/ble_services/experimental_gatts_c/nrf_ble_gatts_c.c:187: undefined reference to m_nrf_log_nrf_ble_gatts_c_logs_data_dynamic'
_build/app/nrf_ble_gatts_c.c.o: In function on_disconnect':
nRF5_SDK/components/ble/ble_services/experimental_gatts_c/nrf_ble_gatts_c ...
(more)

76
views
no
1

## Shielding requirement for nRF52832

Hi All,

We are working on nRF52832 custom PCB design. We are having a small concern for shielding. Do we need to provide shielding for nRF52832 based boards for FCC certification or we can leave it as we are already ... (more)

24
views
no
1

## Multiple manufacturer specific data sections

Hi,

In nRF5 SDK v14, in the file ble_advdata.h, there is a routine to create advertisement data from a ble_advdata_t struct that is passed. This struct allows only 1 manufacturer specific data section. I also noticed in the iOS ... (more)

27
views
no
no

## SDK14: determine what modules to link/enable

Hi!

I once set up a simple project using SDK 12 and the HRS example.

Now I tried porting it to SDK 14 and SD 5. That didn't work out well.

So I started things from scratch. I now ... (more)

20
views
no
1

## BLE 4.2 softdevice s132 v 2.0.0 and client

Hi all,

i have a question about the communication client and server. I'm using for my project a nrf52 and softdevice s132 v2.0.0, reading the datasheet i can understood that it use ble 4.2 version 2 ... (more)

32
views
no
no

## After disconnected, why does electric current increase ?

Now facing the problem "After disconnected, the electric current increases"...

I think softdevice is working hard even after disconnected when connecting once. Could you tell me how to back to the calm state of softdevice by sd function(s)

Is ... (more)

68
views
1
vote
2

## Do we support BLE long range feature on nRF52832?

Dear Nordic, I see nRF52832 already support Bluetooth5 on-chip from your offical website, we want try a long range case, but not find the relate code, is it supported on nRF52832？ Thanks.

34
views
no
no

## Thingy52 upload Sample Project OTA

Hi everyone,

I have moved from the cable connection firmware upgrade to the OTA-DFU using the nRF52 dev kit. I am able to download the firmware from nordic's website and upload the pre-zipped file without any issue. I start ... (more)

26
views
no
no

## Power Optimized FreeRTOS? Any examples?

Are any of the freeRTOS examples Power Optimized? I've looked into other related posts but not sure anyone is seeing the same issues I'm seeing. I'm using a Rigado BMD300 and I can't get it to ... (more)

45
views
1
vote
1

## UART Service instant overflow [closed]

I'm trying to create a program that takes a stream of UART data at 115k baud streaming in and sends it over BLE as fast as possible. So far, I've

(1)Verified/ made some tweaks to the Nordic ... (more)

52
views
3
1

## BLE Adv Interval

I am working on S140 on nRF25840. I am using the ble_app_beacon sample. I want to set the advertising interval smaller than 100ms while using non-connectable mode. But the BLE_GAP_ADV_NONCON_INTERVAL_MIN stops me. I wonder if there is any reason to ... (more)

64
views
3
1

## Do I understand BLE Connection Interval properly?

Hello,

I am trying to understand a bit better BLE throughtput in order to use it for my application, having read this Nordic Blog, this post and ATT_MTU Throughput Example

I have a question regarding to the parameter so called ... (more)

527
views
5
4

## Full sdk_config.h somewhere?

Using SDK v12.2.0. Starting a new project with Segger Embedded Studio, I have to assemble an sdk_config.h file. For example when using GPIOTE I first need to find an example project that uses it and extract the ... (more)

72
views
no
2

## Windows 10 and Thingy 52, can't use web app

I'm in need of some help with connecting to the Thingy 52 when using Windows 10, in this case Windows 10 Pro. I've tried Google Chrome and Opera.

If that helps, I have an HP ZBook G3 mobile workstation.

48
views
1
vote
1

## Can't discover services on nrf52832 with iPhones

Hi,

I'm trying to connect and discover services of a BLE device equipped with a nrf52832. The device advertises correctly and i can see it on the nrf Connect app on both iOS and Android platforms. However, when i ... (more)

1k
views
3
1

## How gpio related to gpiote?

Hi All,

   i would like to know  how gpio relate to gpiote,i go through some code and find
out , that  gpiote handles in,out,config registers that is handle by gpio also ,How it is
happening ?

so can any ...
(more)

45
views
1
vote
no

## DFU transfer speed reduced to half: S132_v3.1.0@3.5kb/s vs. S132_v4.0.4@1.8kB/s

Hi,

we are using are more or less unmodified version of the Secure DFU bootloader example. Especially all BLE/Softdevice configuration in "libraries/bootloader/ble_dfu/nrf_ble_dfu.c" is unchanged.

Using the nRF Connect PC application(v2.0.1) as peer ... (more)

42
views
1
vote
no

## I have few questions on BLE in rigado

I have few questions on BLE in rigado based on my requirement needs, 1. I need Dynamic data transfer in beacon mode, is it possible in Beacon mode without Rigado BLE stack reset? 2. I need to connect my device ... (more)

30
views
no
1

## Interface inconsistency when discovering multiple services

registered_handler_get() in ble_db_discovery.c searches a table for the appropriate handler to call for a given UUID.

However, ble_db_discovery_evt_register() assigns the same handler for all UUIDs:

uint32_t ble_db_discovery_evt_register(ble_uuid_t const * p_uuid)
{
VERIFY_PARAM_NOT_NULL(p_uuid);
VERIFY_MODULE_INITIALIZED();

return registered_handler_set(p_uuid, m_evt_handler);
}


Is the ... (more)

93
views
no
no

## L2CAP layer question

Can somebody explain what 0xA1 means in this raw L2CAP layer:

0a, 00, 4d, 00, A1, 01, 00, 00, 08, 00, 00, 00, 00, 00

I know 0a, total bytes, and 4d is channel ID, I am not sure what ... (more)

74
views
1
vote
1

## How does a legacy device become member of and communicate securely with the Bluetooth mesh network?

Hi,

In the Getting Started guide of the Bluetooth Mesh SDK it is stated that legacy non-mesh devices can communicate with the mesh via a proxy mesh device through tunneling and also that mesh security also applies to that communication ... (more)

22
views
no
1

## Implementing nrf51 timer example with mbed

Hi everyone,

I am using the PCA10001 eval board and I have been able to get things up and running using the mbed platform but now I am implementing a timer based interrupt for that I was using a ticker ... (more)

32
views
no
1

## ble_gatt_db_srv_t is not aligned

pm_peer_data_remote_db_store() stores an array of ble_gatt_db_srv_t.

pm_peer_data_remote_db_store() calls pm_peer_data_store(), which requires a buffer whose alignment and size are a multiple of 4 bytes.

ble_gatt_db_srv_t is not declared with alignment:

typedef struct
{
ble_uuid_t               srv_uuid;                                  /**< UUID of the service. */
uint8_t                  char_count;                                /**< Number ...`
(more)

#### Statistics

• Total users: 24465
• Latest user: Odette Pemulwuy
• Resolved questions: 10456
• Unanswered questions: 3314
• Total questions: 25472

## Recent blog posts

• ### 6 Things to Know about Bluetooth Beacons

Posted 2017-09-22 08:27:00 by Rose Martin
• ### Creating a Keil project for a Bluetooth Mesh example

Posted 2017-09-19 12:08:11 by Kristian Skordal
• ### Using millis() like in Arduino.

Posted 2017-09-18 11:58:04 by schef
• ### Flashing nRF5x firmware using any dumb terminal program via standard serial COM port

Posted 2017-09-18 03:53:40 by Nguyen Hoan Hoang
• ### How to Debug the nRF52 Interrupts — Useful Tips

Posted 2017-09-13 15:15:22 by Yaniv Nis

## Recent questions

• ### GPIO port input in low power mode

Posted 2017-09-24 20:25:18 by michael
• ### Any nRF52840 examples for BLE Mesh?

Posted 2017-09-24 17:06:24 by aszka
• ### Can not find Nordic dongle from my application

Posted 2017-09-24 14:23:37 by ofer
• ### Can’t program BT832 Module using NRF52-DK

Posted 2017-09-24 10:47:56 by Alexey
• ### Is there any Dc offset on nRF52840 RF port ?

Posted 2017-09-24 09:43:40 by Artak