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nRF51822 USB dongle help 0

Hi Guys, I have a MCU RTOS project. in Hardware board, builtin Nodic BLE chip over UART,RTOS BLE stack works fine. We also have a MCU RTOS Emulator based on Qemu,we...

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0 replies

Started over 9 years ago
by tommyhung
Not Answered
[iOS: pairing cancelled] BLE GAP disconnection no more handle since SDK 7.3.0 ? 0

Hello, I would like to have more info about canceling the pairing request on iPhone (thru the popup that asks if you want to pair with the device which is managed by iOS...
- nrf51822 pairing io
705 views

0 replies

Started over 9 years ago
by Sebastien
Not Answered

NRF51 TWI - i2c - Failing to read from device 0

Hello everyone, I'm severely struggling to perform a simple task. I must be missing a very simple answer and, I hope with your help that I resolve the issue. I am trying...

1430 views

0 replies

Started over 9 years ago
by Beau R.
Not Answered
IoT SDK connect with TWI(I2C) ?? 0

[Dev Env] nRF51 DK IoT SDK 0.8 IoT SoftDevice [Question] anybody help me. In Iot SDK can't access TWI interface? any Sample ?? [HardFault_Handler] ...
- i2c
- iot sdk
- twi
- iot
768 views

0 replies

Started over 9 years ago
by cucu
Not Answered

How to two ble devices connect with one android phone at same time? 0

if the issue can be worked ,how to do that with android source code? the 2 ble pure devices (not android phone) connect with a ble android phone. please check below, the...

614 views

0 replies

Started over 9 years ago
by whiteknight

Recent in Nordic blog

SD card interfacing

Salman

Hi, I have written SD & SDHC card routine for reading, writing and erasing data from SD card. It used the hardware SPI of nRF51822. NOTE: 1)Define the PINs of SD card first before initialing. 2)Define…
- 10 Oct 2014
How different BLE packet types influence throughput

Stefan Birnir Sverrisson

There are several types of write operations, write request with authorization, write request without authorization and write command. You can see message sequence charts for those messages here and he…
- 9 Oct 2014
Measuring Lithium battery voltage with nRF51

Stefan Birnir Sverrisson

Here is an example of a hardware setup to measure the voltage on a Lithium battery with a voltage divider and a connected capacitor. The Lithium battery typically has a voltage range of 2.7 - 4.2 V and…
- 2 Oct 2014

Latest guides

nRF5x: Current measurement guide: Introduction

Stian Røed Hafskjold

###Other relevant posts A concise guide to equipment setup, and how to use the development kit for current measurements can be found here: Measuring current with PCA10040 v0.9.0 A post that describes…
- 1 Dec 2015
nRF5x: General PCB design guidelines for nRF51 series

Petter Myhre

When designing a PCB with nRF51, nRF51822 or nRF51422, there are some rules that should be followed in order to get a good working radio/system, with a maximized range. General rule The RF part of the…
- 13 Nov 2015
Software Development Kit: nRF5 SDK Scheduler Tutorial

Einar Thorsrud

2019-02-08: Updated tutorial to cover nRF5 SDK version 15.2. Introduction Scope The following topics will be included in this tutorial: Configuration of the Scheduler library. Using the scheduler with…
- 9 Nov 2015
Bluetooth low energy: Bluetooth low energy central tutorial

Anders Strand

Scope Topics that will be covered include: Before we begin Necessary equipment and software Necessary prior knowledge Setting up the example projects Background theory Central and peripheral roles…
- 4 Nov 2015
Software Development Kit: nRF5 SDK Application Timer Tutorial

Einar Thorsrud

2018-11-23: Updated tutorial to cover SDK version 15.2. 2019-02-08: Improved example project (SDK 15.2) and updated instructions accordingly. Introduction Scope The following topics will be included in…
- 30 Oct 2015
Bluetooth low energy: Bluetooth low energy Services, a beginner's tutorial

MartinBL

Before we begin Scope Topics that will be covered include: Before we begin Necessary equipment and software Necessary prior knowledge Some basic theory The Generic Attribute Profile (GATT) Services…
- 26 Aug 2015