# 107 questions

Tagged
• x
36
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## Creating a custom UART connection over BLE

I would like to use the ble_app_uart_c example, found here, to connect to a custom peripheral. What values should I change in the central device code in order to connect to a device, service, and characteristic of my choice?

I ... (more)

43
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## How to compile sample project from SDK for nRF52 successfully after importing it to IAR workbench

Right now I am facing a problem as mentioned below: I downloaded nRF52 SDK version 12.3.0. It contains lot of example code. I found .eww file in each example project folder. I was able to open the project ... (more)

68
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1
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3

I'm having some issues getting any of the provided experimental Thread examples to compile with IAR version 8.11.2. I'm using an nRF52840-PDK with the SDK for Thread version 0.10.0. Please see the following image ... (more)

35
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## IAR MDK With Multiple IAR Versions Installed

A while ago I asked this question https://devzone.nordicsemi.com/questi....

Yesterday I re-installed MDK 8.11 after a computer crash and I had IAR version 7.60.1 and version 8.11.2 installed. When I ran the ... (more)

73
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1
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1

## SDK13 Buttonless DFU Service doesnt change into Bootloader

Hi to everybody,

I am working with a custom board based on the nrf52832, while trying to integrate to my existing application the DFU functionality I am having problems when I try to change from app to bootloader through Buttonless ... (more)

47
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## How to overcome linker error when linking NFC samples in SDK 13.1?

IAR EW 8.11.1 does not link the nfc samples from sdk 13.1. There are different sizes for wchar_t:

Error[Lt009]: Inconsistent wchar_t size nfc_t2t_lib.o(nfc_t2t_lib_iar.a) has wchar_t size 16 bits app_error.o and 38 other ... (more)

45
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1
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1

## IAR nrf52832_xxab.icf error

Hello,

I noticed the linker file we were using was for the nRF52832_xxAA so I got the nrf52832_xxab.icf from C:\Program Files (x86)\IAR Systems\Embedded Workbench 8.0\arm\config\linker\NordicSemi\nrf52832_xxab.icf.

After switching linker files ... (more)

51
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2
1

## Problem jumping to application in serial DFU

I am having a strange issue with the serial DFU in SDK 11, s132v2, specifically running either dfu_dual_bank_serial or dfu_single_bank_serial. My goal is to simply get the demo up and running, but I seem to get stuck when the bootloader ... (more)

56
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## In the MPU6050 module, when the ACC, GYRO data update, INT pin can not produce interrupt signal

NRF52832 S132 MPU6050 TWI

I want to finish the function:

1. When the ACC, GYRO data update, the INT pin to generate an interrupt, and then in the P026 pin configuration falling edge trigger GPIOTE interrupt,and then read the ACC ...
(more)

73
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1
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1

## Send more than 255 bytes on SPI slave on nrf52832

Is it possible to send more than 255 bytes on SPI when nrf52832 is used as slave. A few solutions use SPI Master with easyDMA and ArrayList to do this. Will the same solution work for SPI slave?

72
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## Stack usage, IAR

Hello,

I have a question about stack usage. I use nRF51822 SoC, 12.2 SDK & IAR 7.60.1. I am interested in stack usage. Have you done any estimations? Or may be you have any recommendations?

IAR has two ... (more)

2k
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19
1

## what are nrf51 SDK 10.0 known issues

On SDK 10.0 only

• Do not judge the quality of SDK based on number of entries here. This thread should be considered part of Nordic effort to main the quality of the release.

143
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## IAR 8.11 - Issue when compiling ble_app_uart example

Hello,

I get two errors when compiling examples\ble_peripheral\ble_app_uart with IAR 8.11. I have ble_app_uart_pca10040_s132 - nrf52832_xxaa as the active project.

I get the following errors: Error[Pe235]: variable "__stdout" was declared with a never-completed type D:\Projects\Nordic ... (more)

114
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2
2

## How to set memory in IAR, including How to set ram size in IAR

I know the Project options can be configured in the iar_nRF5x.icf file, but there is no option for ram size. If the RAM start and end is given, I guess that is the ram size.

Also, it is not ... (more)

138
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1
vote
2

## Warning: Stack pointer is setup to incorrect alignment. Stack addr = 0xFFFFFFFF

Dear all,

I have been working with a nRF51422 device for about two weeks, and everything went good. This morning, out of nothing, i got this error in IAR: Warning: Stack pointer is setup to incorrect alignment. Stack addr = 0xFFFFFFFF ... (more)

219
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4
1

## IAR 8.10 produce bugs when compiling nrf_delay_us()

Hello, We are migrating from IAR 760 to IAR 8.10 compiler does not produce the same assembly for the SDK12 inline function nrf_delay_us. The original C Function is :

__STATIC_INLINE void nrf_delay_us(uint32_t number_of_us) {
const uint32_t clock16MHz = CLOCK_FREQ_16MHz;
if (number_of_us ...
(more)

675
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2
5

## Problems with HEX and DAT file

I have built a application with IAR, and made a hex file with Intel extended. It’s works fine with nRFgo Studio. But I got problems with dfu updating from my android. I hope the problems are the DAT-file. When ... (more)

115
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## Example code utilizing softdevice will not work properly with IAR compiled hex

Hello,

I have an issue regarding using IAR tools with the examples provided in SDK v13.

I have:

Issue ... (more)

45
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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)

40
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## NRF52DK breakpoints in IAR Embedded Workbench

Hi, i just got the tutorial "Getting started with nRF5 DK" with a NRF52DK to run with IAR Embedded Workbench. Unfortunatly i'm not able to set a single breakpoint in the debug mode with IAR. Even in the very ... (more)

89
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1

## is there a way to set irom1 and iram1 in IAR?

Looking for ways to set irom1 and iram1 address in IAR IDE. Something similar to below.

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

thanks

109
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## nRF52 Best reset strategy with IAR and J-Link [closed]

What is the optimum reset strategy for Debugging the nRF52832 with a Segger J-Link Plus? (Setting of Project_Options/Category:J-Link_J-Trace/Reset)

• nRF shall not execute any code instructions in the main function after debug Image download before steping or go ...

(more)

60
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## ble_app_hrs nrf52832 softdevice ble pca10040 IAR

I am running the ble_app_hrs example and it runs as expected. However, I tried removing one or more of the services from services_init as well as the corresponding advertisement from the array, m_adv_uuids[]. In so doing, the code failed and ... (more)

128
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1

## nRF51 library for Fingerprint Sensor

Hi !

I have been working on Rhydolabz R305 Biometric sensor using Arduino and I have completed with it . Since this sensor has very low Flash memory to store the Fingerprint template ,I though of using nRF51 and storing those data ... (more)

133
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1
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1

## Where to specify the output file for the build on Embedded Studio

Where is the output Hex file for building the project on Segger Embedded Studio?

244
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## Interfacing HX711 for Weigh Sensors using nRF51 BLE

Hi, I am interfacing HX711- 24 bit ADC for Weigh Scale to calculate weight which has DOUT and PD_SCLK for Digital Output and Digital Input. I have the working Arduino code and I need to convert this code for nRF ... (more)

141
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2
2

## nRF51 library file for HX711

Hi, I am on a BLE project to calculate weight using HX711 but i could find proper library file for this over in Github or anywhere. Kindy please someone share the file

Regards.

42
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1
vote
1

## How to convert a S110 code to S130 for BMD-200-EVAL-M in SDK 11 [closed]

Hi, Here I have a code for HC-SR04 from electronut.in which has been written for softdevice 110, right now I am using BDM-200-EVAL-M and SDK version of 11 which supports only softdevice 130. I did few methods for conversing ... (more)

92
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1

## SDK 12.2 FreeRTOS Build Errors

I am trying to update my project to SDK 12.2 which was released this week and I am getting a ton of compiler errors with the FreeRTOS source files. For example, I try an compile tasks.c and I ... (more)

46
views
1
vote
1

## DFU-Failed to reopen transport backend

I've recently updated the hardware on a custom board, moving from the nrf51422 to the nrf52832 and migrated the code from SDK9 to SDK11. I've got most of the functionality back up and running with exception of the ... (more)

#### Statistics

• Total users: 23170
• Latest user: Andrew Ochs
• Resolved questions: 9878
• Total questions: 23817

## Recent blog posts

• ### Flashing and Debugging nRF51/52 with a cheap blackmagic probe compatible SWD programmer

Posted 2017-07-24 09:32:02 by Mahesh Venkitachalam
• ### Introducing nRF5 SDK for Mesh

Posted 2017-07-20 09:42:44 by Pär H

Posted 2017-07-19 06:53:42 by Mohammad Afaneh
• ### Unique Thread/Bluetooth multiprotocol solution with nRF5 SDK for Thread and nRF52840 SoC by Nordic

Posted 2017-07-14 10:31:56 by Krzysztof Loska
• ### nRF Connect macros (currently Android only)

Posted 2017-07-14 13:29:14 by Aleksander Nowakowski

## Recent questions

• ### Difficulty getting s132 SoftDevice working with UART example (uVision)

Posted 2017-07-26 04:24:31 by Drewster