# 3,803 questions

17
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I had successfully write a structure data to fds. After which, I would like to update the same file and record key with new values of a structure. After updating, I will read one of the element from structure to ... (more)

25
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## nRF connect user definitions

I have a feature request for the user_definitions.json file, which can be used to name custom services and characteristics in nRF Connect.

Any plans for adding more functionality with regards to the formatting of the characteristic fields?

The documentation ... (more)

20
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## Using FDS with BLE and Scheduler

Hey guys,

I'm trying to make the FDS work with BLE and the scheduler. But something doesn't right when I use the Softdevice and scheduler with the FDS.

Must I register something in my ble_stack_init(), I read something ... (more)

40
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Hi! Now I am going to control the hardware flow and control the UART. For that purpose, we send an RTS signal from the external MPU and the nRF 52832 that received it sends out an RTS signal to the ... (more)

20
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## Start advertising after connection's hard fault

Hello all:

I have faced a problem that my device will report hard fault when I try to start advertising after force disconnect the device.

My EV board is nRF52832 and develop with SDK12.2.First I connect device with ... (more)

25
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## nRF51822 beacon example on custom board

Hi there,

I'm trying to run the beacon s130 pca20006 example on a custom board. There are 2 main differences between the pca20006 and my board:

• There is a 32 Mhz oscillator on my board
• There is no LF ...
(more)

17
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## How can I use Log4View to display the log output from RTT?

I wanted to share the most reliable and efficient method I found to collect and store my log outputs through segger RTT, which also allows using the excellent Log Viewer Log4View, in order to display the segger RTT output from ... (more)

18
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## Adding RTX support to an existing BLE central project

2017-12-07 22_28_04-D__Users_Eyal_myWorkspaces_KeilMDK_ble_peripheral_ble_app_hrs_rtx_pca10028_s130_.png

Hi,

I've developed a BLE Central app based on the SDK HRS collector example (ble_app_hrs_c_s130_pca10028).

I would like to add RTX support to the project. I've tried to clone the only example in the SDK ... (more)

27
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## Application code jumps to Oxfffffffe after sd_softdevice_enable

Hi, i am creating a new project iar workbench 7.8 with SDK V8.1.0 and softdevice V8.0.0 using custom board nrf51822 ic revision 3 (QFAAH00),clock source as "NRF_CLOCK_LFCLKSRC_RC_250_PPM_8000MS_CALIBRATION" for ble_stack_init(),after sd_softdevice_enable() code will not ... (more)

57
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## 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)

20
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## Thread cli example on nRF52840dk - USB not recognized

I try to run the thread cli example on the nRF52840dk with the SDK_for_Thread_v0.11.0_84a130f.

Windows 10 throws an error like "USB device not recognized / Error trying to get device description" (translated)

• I tried several USB-Cable, dev kits and ...
(more)

81
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## PHY coded and Coexistence

Hello,

I'm testing PHY coding (for long range), I'm pretty surprise from what I get when I scan the RSSI of bluetooth channels (with Nordic app).

This is my set up:

M1 is the central, S1 is the ... (more)

42
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I am using the Arduino Primo board. I have multiple beacons that advertise at a set interval. All beacons have the same Device_name. The Arduino Primo board scans for all beacons that have a set Device_name. If the correct Device_name ... (more)

30
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## BLE_GAP_IO_CAPS_DISPLAY_ONLY Android No Working

ScreenRecord_20171204_133336.mp4

I am working in sdk14.1 nrf52832 ble_app_hids_keyboard_pca10040_s132.

IOS and WIN10 on working ,but android no working .

here is some of the important code :

define passkey and set it:

 uint8_t passkey[] = "123456";
m_static_pin_option.gap_opt.passkey.p_passkey = passkey;
sd_ble_opt_set ...
(more)

22
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## unable to compile OpenMesh on SDK12

Hi,

I'm unable to compile the OpenMesh example application. I've modified the make file with correct paths. However I'm getting the following error. Can you please help?

In file included from ../../../../../../components/device/nrf.h:49:0 ... (more)

28
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I am using cjmcu 8223 board for my project so for uploading program I brought a ST-link V2 pen drive like device but I can't able to detect the board on the ST-link software and non happen I am ... (more)

55
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## How to know when a mesh node has been configured?

This might seem like a really banal question, but i could need some clarification on this.

My understanding is that the config_client should be used on the network provisioner node and the config_server should be used on all devices that ... (more)

27
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## No space in execution regions errors when using u8g2 library

Hi all. I'm trying to use the u8g2 library with ss1306 controlled OLED display. After I added the library to the project, Keill gave an error

Error: L6406E: No space in execution regions with .ANY selector matching u8g2_fonts.o ...

(more)

61
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## NRF52840 Coded Phy Sensitivity with soft device 6.0.0-6.alpha

Hi,

although the NRF52840 has a nominal receiver sensitivity of -103 dbm I am only able to get a sensitivity of around -97 dbm. I know there was a bug in older soft device versions resulting in a decreased sensitivity ... (more)

22
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Right now I'm stuck with the COMP driver. What I am trying to do is. Initialise COMP, start COMP with interrupt and STOP shortcut. Once I handled the interrupt I just want to start the COMP again with an ... (more)

55
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## AES CCM encryption by S132 timeslot API

Hi,

I have tested AES-CCM of nRF52832 with reference to the following answered questions.

https://devzone.nordicsemi.com/questi...

https://devzone.nordicsemi.com/questi...

https://devzone.nordicsemi.com/questi...

I have confirmed that the NIST example would produce correct results ... (more)

52
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## nrf51DK data tranfer issue

Hello All,

I am working on nrf51dk , we are facing the issue if we send > 8 bytes of data in one time from Uart console then BLE_NUS will reset..

Our Setup: ECU --> K-Line Trans receiver --> Android App

The feature of ... (more)

22
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## 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.

28
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## SDK 12.3.0 - why I must flash mbed build first to make SDK build work on nRF51 DK?

Hi there,

I wonder why I have to flash my nRF51 DK using mbed build first to make the SDK build work?

I received my 2 nRF51 DK today and I tried the first one in the following step using ... (more)

22
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## Gpiote interrupt handler

I am writing an application to read IQ samples from TICC1200 transceiver. For which I am using SPI with easy DMA. nrf52840 acts as master and cc1200 acts as slave. Whenever there is a new sample in cc1200 register it ... (more)

38
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## Nordic nRF52-DK disconnects from computer when I upload the BIN file

I am attempting to run my first bit of code on my Nordic nRF52-DK and every time I have attempted to upload the code to the board, the board disconnects in the middle of the upload process and then reconnects ... (more)

23
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## 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)

21
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## May be a beacon qualified as BLE 4.x device without random?

I have a problem with some beacons which don't follow BLE specification. Namely BLUETOOTH SPECIFICATION Version 4.2, 4.4.2.2 Advertising Interval section. The problem is that my beacons don't have random addition at all... I ... (more)

98
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## DFU Update OTA of an application with ble secure bootloader works only once

Hi, I try to use the dfu update OTA with ble secure bootloader. If the Flash is erased and only the SD v5.0.0 and the own Bootloader are programmed a update OTA is working fine (using nrf Connect ... (more)

56
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## SDK11 132 ble_app_uart domo add dfu no work

Hi everybody : SDK11 132 ble_app_uart domo add dfu no work . This is my code . I don't know how to set RAM.This is my set.

#### Statistics

• Total users: 25645
• Resolved questions: 11252
• Total questions: 27773

## Recent blog posts

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