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12,320 questions

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Last activity 2017-07-22 18:40:18 +0200 by phob

openocd configuration file nrf51.cfg not working

Hi, I am using st-link debugger with NRF51822 module. I was trying to connect it openocd, but it failed. st-link is working with STM32 processor and able to flash through STM32 ST-LINK Utility.<br /> I was got error as follows ... (more)

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Last activity 2017-07-22 17:45:06 +0200 by kont40

Problems with UART running ble_app_uart_c on nRF52832

Hello, I am trying to run the ble_app_uart_c example that is part of the nRF5_SDK_13.1.0_7ca7556 on a custom board with nRF52832 using IAR. Hardware seems healthy, I succeeded to run LEDs and make them blink... I am having ... (more)

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Last activity 2017-07-22 17:38:54 +0200 by MANGO

Wake-up source with nRF52 capacitive touch and current consumption

Hello, I'm planning to try the NordicBlog; Capacitive Touch on the nRF52 series to test a button type or a up-down slider type.

I'm planning to use an nRF52832-QFAA for a new 2 layered FR-4 PCB.

My application ... (more)

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Last activity 2017-07-22 16:39:12 +0200 by Jonathan

ble_app_uart_c on a custom board with NRF52832-QFAA-R7

Hello, I am working on a custom board with NRF52832-QFAA-R7 and trying to run ble_app_uart_c on it. I am using uVision 5.23.0.0

  1. The first trouble that I am facing is that I can't get the softdevice ...

(more)

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1
answer
Last activity 2017-07-22 13:30:55 +0200 by Ben Lau

ANCS problem

I have some question about ANCS ,when we trun off the IPhone and turn on the IPHONE. The notifcation is disabled. I have to turn OFF the bluetooth and ON bluetooth form ISO setting. Then ANCS notifcation is working again ... (more)

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Last activity 2017-07-22 12:48:29 +0200 by Khan

Different master instances for two slaves in nrf51422

Hi All,

I am using nrf51422, SDK 12.0.0, an SPI OLED display 128x32, and an SD card.

I want to interface an OLED display and an SD card onto the nrf51422. Although my SD card and the OLED ... (more)

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Last activity 2017-07-22 12:45:42 +0200 by endnode

Receiving notifications from Android Phone

Hi all,

I like build a smartwatch-like device that can receive notifications from my android phone. The bluetooth device has a oled screen and displays what notification is received. If there is an incoming sms, the screen shows "SMS", if ... (more)

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Last activity 2017-07-22 12:03:51 +0200 by SvenS

Linker Error when Compiling Thread Examples with IAR

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)

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Last activity 2017-07-22 10:59:35 +0200 by endnode

APP_ERROR_CHECK(nrf_drv_spi_transfer(&spi, m_tx_buf, m_length, m_rx_buf, m_length));

Hi All,

I am a beginner,Can you please explain me what is the role of this line?

APP_ERROR_CHECK(nrf_drv_spi_transfer(&spi, m_tx_buf, m_length, m_rx_buf, m_length));

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1
answer
Last activity 2017-07-22 10:56:02 +0200 by hpudream

How to Advertising and Scan at the same time

I am now using 52832 to do a project, need to send a BLE broadcast package first, and then start scan, what examples can I refer to?

Attachment is my TX/RX process,and I need to implement the device B image description

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Last activity 2017-07-22 07:01:18 +0200 by RK flag of Singapore

connection request to a known address

Hi guys, I want to ask if it is possible for a nrf51822 to connect to a Central ( my cell phone) without advertising. Let assume that my cell phone has nrf51822's MAC address from the first connection and it ... (more)

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Last activity 2017-07-22 01:21:21 +0200 by samsonc

Real UART TX transmit depth?

I was wondering if anyone has done any extremely high speed UART work on the nRF51 (or the non-EasyDMA module on the nRF52). I need to improve performance for an existing prototype that has to stream a large amount of ... (more)

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Last activity 2017-07-22 00:51:03 +0200 by Ben

SPI Master MISO Noise Issue

I'm trying to connect to a ST LSM6DS3 via SPI on the Nordic chip. I have used SPI on Nordic with other peripherals but couldn't seem to get it to work with this ST chip. Eventually, after debugging ... (more)

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Last activity 2017-07-21 21:19:44 +0200 by Gaurav

nRF51822 POFCON setting at VDD 2.1V

Hello,

I wonder how power failure comparator works at VDD 2.1V. If VDD goes down to 2.1V, and I set POFCON enabled at 2.1V threshold, then does POFWARN work? How 2.1V threshold is produced by VBR?

Thanks..

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1
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Last activity 2017-07-21 19:38:15 +0200 by Lukasz Duda flag of Poland

OpenThread whitelist

Hi,

I'm trying to get the RSSI of incoming 802.15.4 packets using otLinkRawGetRssi(), but I need only RSSI from one specific device. I tried to use whitelist (otLinkSetWhitelistEnabled(), otLinkAddWhitelist()) and I checked in CLI that whitelist is ... (more)

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Last activity 2017-07-21 19:11:15 +0200 by loquat

app_timer_freertos.c/app_timer_stop bug?

nRF5_SDK_12.2.0. app_timer_freertos.c app_timer_stop() call xTimerStop/xTimerStopFromISR with timer_id parameter. It seem to must use hTimer parameter.

It's bug?

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Last activity 2017-07-21 18:13:10 +0200 by binhnguyens

Are there any particular practices or instructions should i follow if I want to write a custom library

Are there any particular practices or instructions should i follow if I want to write a custom library

We are trying to write a library for LEACH protocol and it is a network algorithm and we can't find an ... (more)

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Last activity 2017-07-21 18:02:00 +0200 by cedric

fstorage in chosen area

Hello, I'd like to store a large amount of data in flash and in a chosen area. As a start, I've chosen the area starting from 0x77000 and ending at 0x78000 Iv'e written this

const tGlobalData romData ...
(more)

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Last activity 2017-07-21 17:21:48 +0200 by remy

my remote 3 of the nrf52's kits doesn't appair on bluetooth with windows or ubuntu?

hello I am on 2 projects the nrf51 and the nrf52 , but I met some problems about the bluetooth on ubuntu and windows . Can you help me please ?

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Last activity 2017-07-21 17:08:31 +0200 by Fausto

get app timer current count

Hi,

i set the app_timer to fire every 60 seconds app_timer_start(m_Timer_id, APP_TIMER_TICKS(60000, APP_TIMER_PRESCALER), NULL);

Is it possible to get the current couter,for example, after 30 seconds?

I need to have an RTC counter discretized to milli seconds ... (more)

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1
answer
Last activity 2017-07-21 17:00:08 +0200 by endnode

BLE_EVT_TX_COMPLETE in S132 v4.0.2

Hi,

I am working on testing this modification on the ble_hrs example. The idea is to send data sequentially as notifications.

However, BLE_EVT_TX_COMPLETE seems to have disappeared in S132 V4.0.2.

By looking at the infocenter, I notice sd_ble_gatts_hvx ... (more)

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1
answer
Last activity 2017-07-21 16:03:52 +0200 by Jørgen Holmefjord flag of Norway

I2C communication issue

hello i am using nrf52840, with BME280, i have external pullup 10k resistor. how i can disable the internal pullup resistor. i am using this sample code.

https://github.com/Martinsbl/twi-find...

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Last activity 2017-07-21 15:47:20 +0200 by Ling Vu

Android device as IPv6 BLe Server sending UDP packages

Hi,

i'm currently try to figure out how to use an Android device as an IPv6 Server through BLe sending UDP packages. One of my collegues tried this example as it was discribed with an Rasberry Pi as edge-server ... (more)

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2
answers
Last activity 2017-07-21 14:18:16 +0200 by Jev

nRF24L01 Ack issue / tx giving max_rt error / PIC18F25K20

Hi,

I am having problem with setting up TX side of my project. It always giving me max_rt error if I am sending only once per cycle. 1 Cycle is every 30seconds. All working fine without ACK enabled, with ACK ... (more)

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1
answer
Last activity 2017-07-21 14:12:59 +0200 by Iliyan Iliev flag of Bulgaria

HID Mouse/Keyboard Example on nRF51 Dongle

I want to run the HID Mouse and Keyboard examples on nRF51 Dongle. How I can configure it first, to connect with my PC via Bluetooth and second, to configure the GPIOs act like buttons, since the dongle doesn't ... (more)

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Last activity 2017-07-21 13:48:55 +0200 by samsonc

PPK won't output over 2.2V on nRF52832 Preview DK

Hi, No matter what I adjust, I can't get the PPK to output over 2.2V. I happen to be using an older nRF52 preview DK (figured it'd be a good use for that board now that it ... (more)

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1
answer
Last activity 2017-07-21 13:40:01 +0200 by Jørgen Holmefjord flag of Norway

LIS2DE12_SPI problem

Hello I try to control the LIS2DE12 accelerometer to detect movement through the pin INT1 For this I wrote the program below but I tell problems (I feel that there is a problem with the Read and write function) Thank ... (more)

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1
answer
Last activity 2017-07-21 13:29:41 +0200 by Hung Bui

How to add timestamp in RTT viewer using NRF log module

Currently developing on NRF52 sdk12 with a terminal

In my source code i have nrf_log_init(null), and this allows me to print stuff to the RTT viewer.

Now I want to be able to show time stamp minutes:seconds:miliseconds ... (more)

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Last activity 2017-07-21 13:23:34 +0200 by Benjamin Schlegel

Jump to bootloader buttonless

Hi,

I use the SDK12.3 and SD130 with secure_bootloader and my own application. I can flash SD and Bootloader and update my app over OTA with DFU from NRF Toolbox. My app works fine after updating. I implemented the ... (more)

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1
answer
Last activity 2017-07-21 12:40:20 +0200 by Hung Bui

Thread Bootloader not booting into Thread app (Thread 0.10 SDK)

I noticed that when upgrading to the latest Thread SDK that my devboard stopped booting. I was following the instructions as per the documentation but noticed that my user application stopped booting. I was following the instructions to the tee ... (more)

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  • Resolved questions: 9858
  • Unanswered questions: 2926
  • Total questions: 23733