Nordic Smart Remote 3 Bedienungsanleitung
Doc. ID 4374_139 v1.1 2017-07-04
Smart Remote 3 for nRF52
User Guide
v1.1
Contents
Doc. ID 4374_139 v1.1 Page 2
Contents
Revision history.................................................................................................................... 4
Chapter1:Introduction...................................................................................5
1.1 Smart Remote 3 DK add-on..................................................................................................................................5
1.2 Smart Remote 3 nRF52 product example....................................................................................................... 5
Chapter2:Kit content..................................................................................... 7
2.1 Hardware content.....................................................................................................................................................7
2.2 Downloadable content........................................................................................................................................... 8
Chapter3:Quick start..................................................................................... 9
3.1 Assemble Smart Remote 3 hardware................................................................................................................9
3.2 Power up....................................................................................................................................................................10
3.3 Program DK with Smart Remote 3 for nRF52 firmware........................................................................... 11
3.4 Turn on and pair with Windows.......................................................................................................................11
3.5 Ubuntu setup........................................................................................................................................................... 13
3.6 Turn on and pair with Ubuntu.......................................................................................................................... 13
3.7 Configure audio input.......................................................................................................................................... 16
3.7.1 Test voice recognition......................................................................................................................... 17
3.7.2 Listening to audio quality.................................................................................................................. 18
Chapter4:System overview......................................................................... 19
4.1 Remote control........................................................................................................................................................19
4.1.1 Pairing........................................................................................................................................................ 19
4.1.2 Trackpad....................................................................................................................................................20
4.1.3 Accelerometer.........................................................................................................................................21
4.1.4 Free-space navigation..........................................................................................................................22
4.1.5 Intelligent power saving.....................................................................................................................24
4.1.6 Keypad....................................................................................................................................................... 24
4.1.7 Infrared LED and infrared learning feature..................................................................................25
4.1.8 NFC..............................................................................................................................................................26
Chapter5:Hardware description: Smart Remote 3 DK add-on.................27
5.1 Hardware figures: Smart Remote 3 DK add-on........................................................................................... 28
5.2 Block diagram.......................................................................................................................................................... 29
5.3 Design description................................................................................................................................................. 30
5.3.1 Trackpad....................................................................................................................................................30
5.3.2 Keypad matrix.........................................................................................................................................31
5.3.3 Low-power accelerometer circuit................................................................................................... 33
5.3.4 Motion tracking device....................................................................................................................... 34
5.3.5 Power supply...........................................................................................................................................35
5.3.6 Infrared LED and driver.......................................................................................................................36
5.3.7 Codec......................................................................................................................................................... 36
5.3.8 Digital microphones (only for use with nRF52 DK)...................................................................37
5.3.9 nRF51 DK interface............................................................................................................................... 37
Contents
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5.3.10 nRF52 DK interface.............................................................................................................................39
5.3.11 Current measurement....................................................................................................................... 41
5.3.12 I2C bus connector............................................................................................................................... 42
5.3.13 Schematics, bill of materials, PCB layout files, production files......................................... 42
Chapter6:Hardware description: Smart Remote 3 nRF52 product
example...................................................................................................... 43
6.1 Hardware figures: SR 3 product example......................................................................................................43
6.2 Block diagram.......................................................................................................................................................... 44
6.3 Design description................................................................................................................................................. 45
6.3.1 I/O usage...................................................................................................................................................45
6.3.2 Keypad matrix.........................................................................................................................................46
6.3.3 Low-power accelerometer circuit................................................................................................... 47
6.3.4 Motion tracking device....................................................................................................................... 48
6.3.5 Power supply...........................................................................................................................................49
6.3.6 Programming interface....................................................................................................................... 50
6.3.7 Digital microphones............................................................................................................................. 51
6.3.8 Matching network.................................................................................................................................52
6.3.9 Antenna.....................................................................................................................................................52
6.3.10 NFC........................................................................................................................................................... 52
6.3.11 Infrared emitter/receiver.................................................................................................................. 53
6.3.12 Buzzer...................................................................................................................................................... 53
6.3.13 Schematics, bill of materials, PCB layout files, production files......................................... 54
6.4 Power consumption performance................................................................................................................... 54
Chapter7:Firmware update of Smart Remote 3........................................ 56
7.1 Connect product example to nRF52 DK........................................................................................................ 56
7.2 Selecting a board to program........................................................................................................................... 57
7.3 Identifying the nRF52 chip and chip content..............................................................................................57
7.4 Erase all.......................................................................................................................................................................57
7.5 Programming with Nordic firmware............................................................................................................... 57
Legal notices....................................................................................................................... 59
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Chapter 1
Introduction
The nRFready Smart Remote 3 for nRF52 reference design (nRF6939) is a high-performance development
platform providing a quick and easy starting point for TV remote control used with Internet-enabled TVs,
set-top boxes, and media players. Providing a single chip solution that is easily implemented, this kit comes
complete with source code and documentation for Bluetooth® low energy applications.
This reference design contains two remote controls, one for development and another for demo purposes.
1.1 Smart Remote 3 DK add-on
The Smart Remote 3 DK add-on (nRF6932) is a board that allows you to connect to the nRF52 Development Kit
(nRF52 DK, not included in this kit). Plugging the DK add-on onto the nRF52 DK gives you access to the radio
components for developing your remote control design.
Based on the nRF52832 multiprotocol System on Chip (SoC), it is optimized for low-power high performance
applications and leverages both Bluetooth® low energy and 2.4 GHz proprietary protocols.
Important: The Smart Remote 3 DK add-on rev 1.2 and later is compatible with both nRF51 and nRF52
development kits.
Features:
• Standard remote control keypad
• Motion wakeup detection using low-power accelerometer
• 3D motion tracking using gyroscope and InvenSense® motion library
• Multi-touch trackpad (supports up to five points of contact)
• Voice input using an analog electrostatic microphone (only nRF51)
• Voice input using two digital PDM microphones (only nRF52)
• Infrared LED for legacy support (only nRF52)
• Arduino standard interface for connection to the nRF5x Development Kit
• Optimized power management for low power consumption
1.2 Smart Remote 3 nRF52 product example
The Smart Remote 3 nRF52 product example (nRF6937) is a fully-designed remote control with audio input,
air mouse functionality, infrared LED, NFC tag, and buzzer. It features a subset of the functionality of the Smart
Remote 3 DK add-on, allowing the board to nicely fit into an almost finished remote control plastic housing.
Features:
• Standard remote control form factor
1 Introduction
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• Standard remote control keypad
• nRF52832 QFAA SoC from Nordic
• Voice input using up to two digital PDM microphones, which enable the use of (optional) active noise
reduction algorithms
• 3D motion tracking using gyroscope and InvenSense® motion library
• Motion wakeup detection using low-power accelerometer
• Infrared LED 1
• NFC tag for tap to pair2
• Buzzer for the Find Me service
• Device firmware update (DFU)
• Preprogrammed, can be used out of the box
• Powered by two AA batteries
• SWD interface connector for programming and debugging
• Optimized power management for low power consumption
1Output is not supported in rev 1.0 of the reference firmware.
2Support starts from reference firmware rev 1.1.
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Chapter 2
Kit content
The nRFready Smart Remote 3 reference design consists of hardware and access to software components,
reference design files, and documentation.
2.1 Hardware content
nRFready Smart Remote 3 reference design hardware consists of the DK add-on, product example, batteries
and a Bluetooth® dongle.
Figure 1: nRFready Smart Remote 3 for nRF52 Series hardware content
2 Kit content
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2.2 Downloadable content
The nRFready Smart Remote 3 for nRF52 Series reference design includes firmware source code,
documentation, hardware schematics, and layout files.
To access these files, go to the Smart Remote 3 for nRF52 web page and follow the instructions.
Firmware package
• Application firmware for nRFready Smart Remote 3 for nRF52
• Precompiled HEX files
• Source code
• nRF5x SDK v11.0.0-SR3
• S132 SoftDevice
• Nordic Voice System (NVS) package version 5.1 (requires Ubuntu 16.04 LTS)
• Firmware Documentation (will be available in a folder on your computer after you have run the installer
file)
Important: Refer to firmware documentation for details regarding SDK, Softdevice and compiler
options.
Schematics, Bill of Materials, PCB layout files, and production files
The ZIP file and its subdirectories contain the hardware design files for the nRFready Smart Remote 3 for
nRF52 Series reference design.
• Altium Designer files
• Schematics
• PCB layout files
• Production files
• Drill files
• Assembly drawings
• Gerber files
• Pick and Place files
• Bill of Materials
Other relevant nRF52832 documentation
•nRF52832 Product Specification
•S132 SoftDevice Specification
•nRF52832 Errata
•nRF5 SDK
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Chapter 3
Quick start
Setting up the nRFready Smart Remote 3 for nRF52 reference design requires only a few steps. Example
applications help you start programming your device.
Hardware requirements
Additional hardware needed to use the Smart Remote 3 DK add-on:
•nRF52 Development Kit (sold separately)
Operating system requirements
The nRFready Smart Remote 3 complies with the HID-over-GATT profile. The following is needed to set up a
computer as the Bluetooth® low energy host.
• Basic use:
• Windows 8 or Windows 10 for HID-over-GATT standard functions
• Linux with Bluetooth® 4.0 support (for example BlueZ 5.0 or later)
• Use with audio:
• Ubuntu 16.04 LTS with Nordic Voice System (NVS) package. See Ubuntu setup on page 133
The Product example comes with pre-installed firmware. For a quick start with this device, just put batteries in,
and continue reading in Turn on and pair with Windows on page 11 or Turn on and pair with Ubuntu on
page 13
3.1 Assemble Smart Remote 3 hardware
Unpack the kit and connect the DK add-on to the nRF52 DK.
1. Unpack your nRFready Smart Remote 3 for nRF52 reference design.
2. Plug the nRF52 DK (sold separately) carefully on the backside of the Smart Remote 3 DK add-on as shown
in the figure.
3NVS for Linux is part of the software package for Smart Remote 3 for nRF52. It comes as Linux .DEB install
files, as well as a Linux LiveCD image for test with or without install.
3 Quick start
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3.2 Power up
The Smart Remote 3 for nRF52 product example will be on as soon as the batteries are inserted. The DK add-
on can be powered either from the USB or from the batteries.
Follow the steps below to power up the DK add-on:
1. Plug in the USB cable or insert batteries into the battery compartment.
2. If powered from the USB, turn on the power with the power switch. If powered from the batteries, it will be
on as soon as the batteries are inserted.
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