# 1,080 questions

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48
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1
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2

## Problem using GPIO- and BSP-module simultaneously

Hello,

last week I was trying to integrate a wake-on-motion-functionality for my hardware using some interrupt-handling. While that problem is solved, I came across some kind of interdependency between initializing the GPIO- and the BSP-module simultaneaously.

Here is the code ... (more)

15
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no
1

## mesh stops working after enable scanning

Need help from the mesh experts in this forum!

I'm running the open mesh in the 52832 with the s132_nrf52_3.0.0_softdevice.hex softdevice. The mesh works fine in my tiny 4-node test network. But when I add scanning ... (more)

95
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1

https://devzone.nordicsemi.com/blogs/...

In this blog this is written:

how much is the overhead and where can i look this up?

22
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2
2

## GCC linker error - SSD1306 library

Hi,

I'm trying to make https://github.com/monpetit/nrf52-spi... to compile with GCC (linux). So far I've managed to get it compiled, but linking fails:

mkdir _build
Compiling file: nrf_log_backend_serial.c
..<snip>..
Assembling file: gcc_startup_nrf52.S
Compiling ...
(more)

32
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no

## nRF52832 current consumption in sleep mode

Hi,

I am using the PCA10040 DK (v1.1.1) to measure the current consumption in sleep mode and the current is about 200 uA. (3V, DCDC Enable)

Following is the code, it's really simple. For current leakage, I ... (more)

29
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## NRF52 Running S132V3.0 Soft Device as a Central can't maintain a connection with a Samsung Galaxy S7 peripheral

Hardware: I have an nRF52 device running the S132 running as a Central. I have 6 iOS/Android devices running as peripherals.

Background: I am attempting to have my central device maintain a connection with a variety of devices. My ... (more)

35
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1

## gdb cannot step or next

This might not be the correct place/forum to ask this question.

Since a couple of days, I am not able to step or next with gdb. I understand that gdb needs to know what library is used in order ... (more)

73
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1
vote
3

## Problem with double-reset after flashing

Hello,

I am trying to get to the bottom of a double-reset-problem which I am facing, whenever I flash my software-program to the nRF52832 (1 for the flashing and 1 after a short startup).

Currently I am using a Windows ... (more)

25
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## Stream data over nRF52 Example?

Hello, I would like to stream sensor data from the Bosch IMU sensor over BLE at a maximum rate. I can collect data over I2C from the sensor but would like to know if there is an example that I ... (more)

44
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2

## UART not working in nRF52832 as an observer role only.

I am using a nRF52832 which act as an observer role only and what is observe it send observed data to another device over UART.

When i turn off scanning and just run UART it works properly but when scanning ... (more)

29
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1

## Completed Code for BLE Services, a beginner's tutorial

Where can I find the completed source code for the BLE Services, a beginner's tutorial

I keep having trouble advertising, so either I am missing something, or have incorrect IAR setting.

Any help appreciated https://devzone.nordicsemi.com/tutori...

26
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1

## ibeacon continuous scanning and connectable service

Hi,

Data are then sent via UART to a microcontroller which provides Bluetooth connectivity in order to read data on an iOS device.

I am using ... (more)

32
views
2
2

## Identifying beacons with 128 bit UUID

Hi,

I am working on a project where I have 4 advertising beacons which will have to trigger some functions in the central side when it gets the advertising data. Now I am currently working on the central(ble_app_uart) side ... (more)

33
views
1
vote
1

## NRF52832 flash endurance

According to the nRF52832 spec, the flash memory can handle a minimum of 10K write/erase cycles. I need to understand the following:

• I understand the write/erase cycles are at a word level. That is, each 32-bit word can ...
(more)

12
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no

## nRF52 dk issues with bonding PM_EVT_CONN_SEC_FAILED is called every time

Hi

i am trying to connect ble_app_proximity with ios (10.0.2), but every time it is generating PM_EVT_CONN_SEC_FAILED for pm_evt_handler with sdk 12.2.0

i need to implement whitelist functionality once device is connected.

Thanks

33
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1

## System with nRF52832 end-nodes and SDK IoT

Hi!

I tried to some research in the forum but I would like you to assert my final decision.

My goal is to design a sensors network (at the beginning with five end-nodes, but with possible increase) and one gateway ... (more)

24
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## [nRF52832] How to start/stop SAADC the right way?

Hi,

I have designed a system that uses the SAADC to sample 3 analog inputs in scan mode at 8 KSPS, performs downsampling by a factor of 8 using the DSP, and sends the results over BLE.

The sampling is ... (more)

45
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1

## What is the voltage range for ADC in nrf52832?

I went through a similar post for nrf51 which explains the numbers pretty well (https://devzone.nordicsemi.com/questi...). I wanted to know what the values are for nrf52. The internal reference seems to have changed from 1.2V (nrf51 ... (more)

106
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1
vote
1

## -----------------------------EDIT--------------------------------------

I've changed topic name, because not buffer overwrite is the problem.

I need some mechanism for checking if my data packet can fit into FIFO buffer. If not, it should be just lost. It has to be all ... (more)

24
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2

## S332 BLE CONNECT IOS DEVICE

i used SoftDevice s332,and download the example:<InstallFolder>\examples\multiprotocol\ble_ant_app_hrm i find that using android device can connect pca10040 ble well,but use ipad or iphone(lightblue) both can't connect. i want to know how to solve ... (more)

39
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1

## Power consumption for nrf52 with TWI & GPIOTE [closed]

Hi,

I have an issue about power consumption with a board nrf52 10040. The consumption should be 100µA but is 500µA. I found an errata about that in 'http://infocenter.nordicsemi.com/pdf/nRF52832_Engineering_C_Errata_v1.5.pdf' (3.27).

I tried ... (more)

33
views
1
vote
1

I'm having a difficult time getting my project to link to the nrf_serial module

._build\nrf52832_xxaa.axf: Error: L6218E: Undefined symbol nrf_serial_read (referred from main.o).

I created my project using SDK13.0.0_04a0bfd/experimental_ble_app_blinky example project as the ... (more)

30
views
1
vote
1

## how can I get write event? [closed]

Hi. I'm using nRF52832, SDK13, S132v4.0.2.

I'm making peripheral device using nRF52832. And I can see it gets BLE_GATTS_EVT_WRITE event as below when central sends WRITE event.

static void on_ble_evt(ble_evt_t * p_ble_evt) { ...... switch (p_ble_evt->header.evt_id ... (more)

22
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1

## (solved) Bootloader crash (s132 softdevice 2.0.0, DFU-Example)

Hello :) I'm trying to run the DFU example (dfu_dual_bank_ble_s132_pca10040) for the nrf52832 chip on a custom board. The Bootloader crashes/resets at the SOFTDEVICE_HANDLER_INIT(CLOCK_SOURCE,EVT_HANDLER) macro. I adjusted the pin configuration for my board, so what else could ... (more)

26
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## i can't reach main function.

this is capture image.

what does that happen?

The debugger is I-Jet and debugging via SWD.

The connection did below. and I'll assume the red line is number one. I made it based on the debugger.

1. First line -> Power ...
(more)

191
views
1
vote
2

hi, all

I want to run nrf's example named "proprietary_rf->esb_prx", the deafult setting of keil memory is IROM1: 0X0 0X80000 IRAM1: 0X20000000 0X10000

It can compile fine, but can not download to board NRF52832, err info is "Error ... (more)

22
views
1
vote
1

## Add new service base on SDK13 is failed

Hi Sir,

I add NUS service into CSCS project base on nRF5_SDK_13 follow the steps below, there was no error occurred after build the project, but it didn't work. Please correct me if there is anything I missed or ... (more)

24
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1
vote
no

## Can't connect when MIN_CONNECTION_INTERVAL=7.5ms

I'm trying to transmit from 52832 （slave） to 51822 (host) as fast as possible, so I set MIN_CONNECTION_INTERVAL=7.5ms and MAX_CONNECTION_INTERVAL=10ms. Then the device couldn't connect, and I can't figure out what's wrong with it.

7
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## getting service count from database discovery module

I'm currently trying to use the database discovery module to get the total number of services and the number of discovered services so that I know when all of the services for a particular peripheral device are discovered and ... (more)

46
views
1
vote
1

## intrinsic safety DCDC inductor

Hi,

Assume the internal FET(s) that bucks the voltage down for the DC/DC got stuck on. I would like to calculate the current through the DC/DC inductor when it reaches it's DC state. To do this ... (more)

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