Nordic nRFready Smart Remote User manual
Doc. ID 4414_003 v1.2 2017-07-04
nRFready Smart Remote 3 for nRF51
User Guide
v1.2
Contents
Doc. ID 4414_003 v1.2 Page 2
Contents
Revision history.................................................................................................................... 4
Chapter1:Introduction...................................................................................5
1.1 Smart Remote 3 DK add-on..................................................................................................................................5
1.2 Smart Remote 3 nRF51 product example....................................................................................................... 5
Chapter2:Kit content..................................................................................... 7
2.1 Hardware content..................................................................................................................................................... 7
2.2 Downloadable content........................................................................................................................................... 8
Chapter3:Quick start..................................................................................... 9
3.1 Assemble the Smart Remote 3 hardware........................................................................................................9
3.2 Power up....................................................................................................................................................................10
3.3 Program your DK with the Smart Remote 3 firmware..............................................................................10
3.4 Turn on and pair with Windows.......................................................................................................................10
3.5 Ubuntu setup........................................................................................................................................................... 12
3.6 Turn on and pair with Ubuntu.......................................................................................................................... 13
3.7 Configure audio input.......................................................................................................................................... 15
3.7.1 Test voice recognition......................................................................................................................... 16
3.7.2 Listening to audio quality.................................................................................................................. 17
Chapter4:System overview......................................................................... 18
4.1 Remote control........................................................................................................................................................19
4.1.1 Pairing........................................................................................................................................................ 19
4.1.2 Trackpad....................................................................................................................................................19
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.............................................................................................................................................25
4.2 Firmware upgrading..............................................................................................................................................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 nRF51 product
example...................................................................................................... 43
6.1 Hardware figures: SR 3 product example......................................................................................................43
6.2 Block diagram.......................................................................................................................................................... 45
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 Codec......................................................................................................................................................... 50
6.3.7 Programming interface....................................................................................................................... 51
6.3.8 Matching network.................................................................................................................................52
6.3.9 Antenna.....................................................................................................................................................52
6.3.10 Schematics, bill of materials, PCB layout files, production files......................................... 52
Chapter7:Firmware update of Smart Remote 3........................................ 54
7.1 Connect the product example to the nRF51 DK........................................................................................ 54
7.2 Flash programming................................................................................................................................................55
7.3 Programming and erasing flash using nRFgo Studio............................................................................... 55
7.4 Selecting a board to program........................................................................................................................... 56
7.5 Chip and memory information..........................................................................................................................56
7.6 Erase all.......................................................................................................................................................................57
7.7 Programming SoftDevice.....................................................................................................................................57
7.8 Programming application....................................................................................................................................58
Legal notices.......................................................................................................................60
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Revision history
Date Version Description
July 2017 1.2 Updated:
• Chapter Hardware description: Smart Remote 3 DK add-on on page
27
December 2016 1.1 Created PDF
December 2015 1.0 First release
Doc. ID 4414_003 v1.2 Page 5
Chapter 1
Introduction
The nRFready Smart Remote 3 reference design for the nRF51 Series (nRF6934) is a low-cost development
platform providing a quick and easy starting point for TV remote control applications for 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 nRF51 Development Kit
(nRF51 DK, not included in this kit). Plugging the DK add-on onto the nRF51 DK gives you access to the radio
components for developing your remote control design.
Based on the nRF51822 multiprotocol System on Chip (SoC), it is optimized for low-power and low-cost
applications and leverages both Bluetooth® low energy and 2.4 GHz proprietary protocols.
Important: The Smart Remote 3 DK add-on (nRF6932) v1.2 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 nRF51 product example
The Smart Remote 3 nRF51 product example (nRF6933) is a fully-designed remote control featuring an analog
microphone input, a gyroscope, and a typical remote control keypad. It features a subset of the functionality
of the Smart Remote 3 DK add-on, allowing the board to fit nicely into a remote control plastic housing.
Features:
• Standard remote control keypad
1 Introduction
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• Motion wakeup detection using low-power accelerometer
• 3D motion tracking using gyroscope and InvenSense® motion library
• Voice input using an analog electrostatic microphone
• Optimized power management for low power consumption
• Powered by two AA batteries
• SWD interface connector for programming and debugging
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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 nRF51 Series hardware content
2 Kit content
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2.2 Downloadable content
The nRFready Smart Remote 3 for nRF51 Series reference design includes firmware source code,
documentation, hardware schematics, and layout files.
To access these files, go to the Smart Remote 3 for nRF51 web page and follow the instructions given there.
Firmware package
• Firmware for nRFready Smart Remote 3
• Precompiled HEX files
• Source code
• nRF51 SDK 9.0.0 (with Keil 5 Packs, and MDK packages for Keil 4 and IAR)
• Project files for Keil, ARM®, IAR and ARM GCC
• S110 SoftDevice
• Nordic Voice System (NVS) package version 4.4 (requires Ubuntu 14.04 LTS)
• Firmware documentation (will be available in a folder on your computer after you have run the installer
file)
Hardware files
The zip file and its subdirectories contain the hardware design files for the nRFready Smart Remote 3 for nRF51
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 nRF51822 documentation
•nRF51 Series Reference Manual
•nRF51822 Product Specification
•S110 SoftDevice Specification
•nRF51822 PAN
•nRF51 SDK v9.0.0
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Chapter 3
Quick start
Setting up the nRFready Smart Remote 3 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:
•nRF51 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, Windows RT, 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 14.04 LTS with Nordic Voice System (NVS) package. See Ubuntu setup on page 12
3.1 Assemble the Smart Remote 3 hardware
Unpack the kit and connect the DK add-on to the nRF51 Development Kit.
1. Unpack your nRFready Smart Remote 3 for nRF51 Series reference design.
2. Plug the nRF51 Development Kit (sold separately) carefully in on the backside of the Smart Remote 3 DK
add-on as shown in the figure.
3 Quick start
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3.2 Power up
The Smart Remote 3 for nRF51 product example will be on as soon as the batteries are inserted. The DK add-
on can be powered either by the USB or the batteries.
Powering up the add-on requires the following steps:
1. Plug in the USB cable or insert batteries into the battery compartment.
2. If powered by the USB, turn on the power with the power switch. If powered by the batteries it will be on as
soon as the batteries are inserted.
3.3 Program your DK with the Smart Remote 3 firmware
To use the DK add-on, the nRF51 Development Kit must first be programmed with the firmware. The product
example is preprogrammed, and does not need any programming to get started.
1. Connect the nRF51 DK with DK add-on attached to a computer with a USB cable.
Important: When programming the DK for the first time, it is recommended not to connect the
DK add-on hardware, as the DK I/Os are in an unknown state, which may result in overcurrent
consumption.
2. See Firmware update of Smart Remote 3 on page 54 for details on firmware update.
3.4 Turn on and pair with Windows
The Smart Remote 3 for nRF51 can be connected with Bluetooth® to a host system using Windows.
nRFready Smart Remote will only pair and work with Bluetooth® 4.0 or later, and HID-over-GATT-compliant
host systems. The nRFready Smart Remote 3 functionality will vary depending on the supported features in
these platforms.
This manual suits for next models
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