# 307 questions

Tagged
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12
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## nRF51422 SDK11 app_uart_fifo race condition and fix

Yet another app_uart_fifo question. I'm using SDK 11 with uVision. It is my expectation that, if using HW flow control and a FIFO to RX, no received characters should be dropped at all, under any conditions.

I've noticed ... (more)

30
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3
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## current peak on the nrf51822

Hi,

I wanted to know the peak current of the nRF51822 chip using the softdevice 130.

I was looking through the documentation and found on the S130_SDS_v2.0.pdf the information on page 81 that the peak current should be ... (more)

16
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## radio detect ,flash erase and store

i want to erase and store the flash after detecting the radio active.

The radio signal is also active, when i erase and store .

Do erase and store the flash may influence the interrupt ?

static void radio_notification_init(void)
{
uint32_t err_code ...
(more)

40
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## porting from SDK 11

I'm trying to port my project from SDK11 to SDK14. I am having troubles understanding how the drivers supposed to be used.

In the files nrf_peripheralXXX_drv.c there is often a state variable m_state, which is changed when the ... (more)

43
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## Pairing and Bonding Method in nrf51822

Hi guys,

I am currently using nrf51822 with SDK 11. I use Peer Manage to deal with paring and bonding encryption in BLE connection.

Please correct me if I am wrong but in "Just Work" mode, the nrf51822 connect and ... (more)

38
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1
vote
1

## DFU SDK11 nrfjprog not working

Hi,

I'm using nrf52 + SDK11 + softdevice 132 2.0 and trying to integrate the OTA dual bank bootloader. Using the nrfjprog tool I program the softdevice + bootloader. If I debug my application in eclipse (after flashing softdevide and bootloader ... (more)

68
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1
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1

Hello,

based on the saadc example of SDK 11 I am trying to change the code to use the SAADC's local timer to sample the input given number of times (10 times for the below example), at a rate ... (more)

22
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## Potential clash between clear function in Pstorage and BLE NUS string function

We have a potential application where we have to send data over BLE at 3kbps and store in external flash memory at 8kbps. The last memory accessed in external flash memory is stored in internal ROM of NRF52. But when ... (more)

39
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## nRF52832: How to Include the "arm_math.h" library

Hello,

I'm attempting to include the "arm_math.h" library so that I can use the requisite DSP functions, etc. I'm getting a linker error so I'm not sure what else needs to be done to resolve the ... (more)

347
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3
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## ESB on nRF52 SDK11: not sending ACK payloads

I'm trying to set up an ESB PRX on an nRF52 that has to communicate with an nRF24L01 chip acting as PTX. Because I want to react to the received data as quickly as possible, I tend to call ... (more)

31
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## ble_app_hrs given in sdk nrf51822 not working.

Hi, I am working on the nrf51822 board and i am only the PAC20006 board version seems to be working on it. I am using sdk 11 and soft device version s130_nrf51_2.0.1 s suggested in the compatibility matrix ... (more)

40
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## How to get Acknowledgement/Confirmation after sending an Indication ?

Hi,

We are sending a data using Nordic UART Service (NUS), the data is transferred over BLE as a Indication.

From Message Sequence Chart in Nordic Infocenter

Here it shows ATT Handle Value Confirmation(blue arrow from PEER to SD ... (more)

26
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no
1

## Error creating a makefile for gcc and eclipse

I have been following the tutorial https://devzone.nordicsemi.com/tutori... on how to use eclipse but in the makefile part im getting this error. I'm using sdk v11. I have used sdk v14 as well but there was ... (more)

69
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3
2

## add characteristics with distinct uuids (128-bit)

Hi,

I have created a custom service, and now I want to add different characteristics to it but with completely different uuids, not only the 12-13 octets.

This service will have 23 characteristics with completely different UUIDS. I tried to ... (more)

33
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## 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)

73
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1

## time counter

Hi everybody !! i m working in a project with NRF52 SDK 11, i need a help, i want to create a funtion that working with RTC to count a tick and to convert it into time then reset the count ... (more)

49
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## NRF52832 power usage after flashing

I am having a strange problem. After I flash the program to the NRF52 and do a reset (does not matter whether it is a soft reset or pin reset) the system (DK and my own board) will consume 3mA ... (more)

79
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1
vote
no

## Update application from SD 2.0.1 to SD 4.0.2

Hello,

I have an application that has to be ported to the newer Softdevice version. I've already ported my application to the SDK 13 and tested it with the new Softdevice v4.0.2.

I found that topic where ... (more)

135
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no
1

## multiple channels using same PWM instance

How can i initialise all four channel of pwm1 using pwm library. i need to initialise one channel for one purpose and other channel for different purpose. whenever i am trying to initialise it is showing error what shou;d ... (more)

138
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2
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## Migrate bootloader from SDK 11 to SDK 13

Hello,

I have an application based on SDK 11 and Softdevice v2.0.0. Also there is a legacy bootloader from SDK 11 for performing DFU.

I am wondering whether it is possible to perform DFU of my devices in ... (more)

117
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1

The problem is because of these flags I only have 26 bytes left instead of full 29 bytes. It is crucial for me to have no less than ... (more)

49
views
1
vote
1

## Stuck waiting for UART event (pstorage)

I am developing firmware using S132 (SDK 11) for a custom board.

After performing Pstorage Update, if I do not wait for the callback from pstorage before continuing execution of firmware, then the firmware seems to stop executing for some ... (more)

41
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no
1

## Save sensor data in external flash

Hi,

I am developing an application, in which I need to store the data collected from various sensors in external flash, in a particular format (Dataset no. - Sensor1 data--- Sensorn data).I am not using BLE or softdevice in my ... (more)

27
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no
1

## Advertising shortened local name corrupts utf-8 characters

We were playing with renaming some of our test devices to use emoji and other multi-byte utf-8 characters. We have a custom characteristic that allows renaming (since iOS won't allow writes to the device name) and supports up to ... (more)

31
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## where to get the SDK supporting nRF52832 DK(PCA10036)? [closed]

Dear friends, i am using Power Profiler Kit with a nRF52832 DK(PCA10036). However, i just find three versions of SDK on https://www.nordicsemi.com/eng/Produc.... My problem is that "nRF5-SDK-v12-zip" does not supports PCA10036. v11 will support ... (more)

138
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3
1

## nrf52 Layout Questions

I have been designing a four layer stack up PCB for nrf52832 SoC with chip antenna (2450AT18B100 Johanson Technology). This is the first time I have been designing a PCB with an antenna. I am using kicad EDA Software. The ... (more)

54
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1
vote
1

## error: #5: cannot open source input file "nrf_drv_gpiote.h": No such file or directory

Hi,

I am using nRF52832 SDK 11 and even when I add the library on keil it can't find nrf_drv_gpiote.h. As the screenshot shows, it is loaded:

Any idea on how ... (more)

79
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1
vote
1

## Can I use app_timer and nrf_drv_timer together?

Hi,

I am having problems with using BLE along with gpiote and ppi for measuring the delay between two waveforms and sending the delay between them to an app using bluetooth. I am measuring the delay using the nrf timer ... (more)

55
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Hi guys,

I am trying to interface nrf52832 with PMIC(BQ25121). I have earlier interfaced PMIC with nrf52832 successfully, and I am using the same code. However this time, I am getting NRF_TWI_ERROR_ADDRESS_NACK error.

I have looked over the error ... (more)

110
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2
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## SDK Example Code Structure

In all the SDK examples all the source is in main.c. Is there a good reason for keeping everything including timer initialization, UART config, BLE setup, etc all in one file instead of separating them out into a more ... (more)

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