Goodix GR5515 User manual

GR5515 Starter Kit User Guide
Version: 1.5
Release Date: 2020-05-30
Shenzhen Goodix Technology Co., Ltd.

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Preface
Copyright © 2020 Shenzhen Goodix Technology Co., Ltd. I
Preface
Purpose
This document introduces the GR5515 Starter Kit (GR5515 SK), the hardware layout, the circuit schematics,
hardware functional modules, and RF and current tests of the GR5515 Starter Kit Board (GR5515 SK Board), to
help you get started with the GR5515 Starter Kit Board quickly in developing Bluetooth Low Energy (Bluetooth LE)
products and applications with GR551x System on Chips (SoCs).
Audience
This document is intended for:
•GR551x user
•GR551x developer
•GR551x tester
•Technical writer
Release Notes
This document is the third release of GR5515 Starter Kit User Guide, corresponding to GR551x_SDK_V1.5.0.
Revision History
Version
Date
Description
1.0
2019-12-08
Initial release
1.3
2020-03-16
Updated the release time in the footers.
1.5
2020-05-30
Optimized the descriptions in “Chapter 9 On-board QSPI Flash”.

Contents
Copyright © 2020 Shenzhen Goodix Technology Co., Ltd. II
Contents
Preface.............................................................................................................................................................I
1 Introduction .................................................................................................................................................1
1.1 Characteristics ...................................................................................................................................................1
2 Quick Start Guide..........................................................................................................................................1
2.1 Preparation........................................................................................................................................................1
2.2 Power Supply and Connection Settings.............................................................................................................1
2.3 Example Running...............................................................................................................................................2
2.4 Mobile Connection Test.....................................................................................................................................2
3 Hardware Overview......................................................................................................................................3
3.1 Hardware Layout ...............................................................................................................................................3
3.2 Block Diagram....................................................................................................................................................4
4 Interface MCU ..............................................................................................................................................5
4.1 J-Link Port ..........................................................................................................................................................5
4.2 CDC Virtual Serial Port.......................................................................................................................................5
4.3 Software Download Port of Interface MCU.......................................................................................................5
5 Power Supply ...............................................................................................................................................6
6 Arduino Uno Shield Connectors.....................................................................................................................9
7 Buttons and LEDs........................................................................................................................................ 10
8 LCD Connector............................................................................................................................................ 11
9 On-board QSPI Flash...................................................................................................................................12
10 Performance Test...................................................................................................................................... 13
10.1 RF Test............................................................................................................................................................13
10.2 Current Consumption Test.............................................................................................................................14

Introduction
Copyright © 2020 Shenzhen Goodix Technology Co., Ltd. 1
1 Introduction
The GR5515 SK is a development platform based on GR551x SoCs (supporting Bluetooth 5.1). It contains a GR5515
SK Board, a schematic diagram, and a user guide. The GR5515 SK allows you to get familiar with GR551x-related
development tools, quickly develop product prototype, and verify related functions.
Figure 1-1 GR5515 SK Board
By default, no software is pre-downloaded on a GR5515 SK Board. It is recommended to download the Bluetooth
or peripheral application example projects provided in a GR551x SDK to a GR5515 SK Board for development and
debugging.
To make best use of the GR5515 SK, it is recommended to refer to the following documents.
Table 1-1 Reference documents
Name
Description
GR551x Developer Guide
Introduces the software/hardware and quick start guide of GR551x SoCs.
J-Link/J-Trace User Guide
Provides J-Link operational instructions. Available at
https://www.segger.com/downloads/jlink/UM08001_JLink.pdf.
GR5515-SK-BASIC-RevC
Offers GR5515 Starter Kit Board schematic diagrams.
1.1 Characteristics
•A single-mode Bluetooth LE SoC that supports Bluetooth 5.1
•Multi-functional buttons and LEDs
•Interfaces that support inserting the Arduino module, with I/O voltage configurable by level shift

Introduction
Copyright © 2020 Shenzhen Goodix Technology Co., Ltd. 2
•SEGGER J-Link OB that supports debugging
•UART-to-USB connector
•Micro USB connector, which establishes connection between a GR5515 SK Board and a PC
•1.44-inch color TFT display
•On-board QSPI flash

Quick Start Guide
Copyright © 2020 Shenzhen Goodix Technology Co., Ltd. 1
2 Quick Start Guide
2.1 Preparation
Perform the following tasks before getting started with a GR5515 SK Board.
Note:
SDK_Folder is the root directory of GR551x SDK.
•Hardware preparation
Table 2-1 Hardware preparation
Name
Description
Cable
Micro USB 2.0 cable
Development board
GR5515 Starter Kit Board
•Software preparation
Table 2-2 Software preparation
Name
Description
Windows
Windows 7 or later versions, or Ubuntu 16.04 LTS or later versions (both 32-bit and 64-bit are
acceptable)
Keil MDK5
An integrated development environment (IDE). Available at http://www.keil.com/download/product/.
GRToolbox (Android)
A Bluetooth LE debugging tool for GR551x. Available in SDK_Folder\tools\GRToolbox.
2.2 Power Supply and Connection Settings
Figure 2-1 shows the assembly diagram of a GR5515 SK Board.
LCD
Arduino
S6
S5
D102
Micro USB Connector(J49)iPex Connector
Printed
Antenna
Figure 2-1 GR5515 SK Board assembly
Before using a GR5515 SK Board, follow the steps below to configure power supply and establish connection:

Quick Start Guide
Copyright © 2020 Shenzhen Goodix Technology Co., Ltd. 2
1. Connect the GR5515 SK Board to a PC with a Micro USB 2.0 cable. The Micro USB connector is used for power
supply and programming through J-Link.
2. Switch S6 (power switch) to the right side (as shown in the figure above) to power the board with current
passing through the on-board LDO; switch S6 to the left side to power the board by lithium batteries.
3. Switch S5 (power switch) to the right side (marked with ON) to turn on the power.
4. D102 starting flashing indicates that the PC begins to detect the J-Link port. If the detection succeeds, D102
stops flashing and remains on.
5. When D102 remains on, open the File Explorer of the PC, and check whether J-Link is in the list of Device
Manager > Ports (COM & LPT). J-Link in the list indicates that power and connection settings are completed,
and downloading and programming for GR551x are permitted; otherwise, check whether the J-Link driver is
installed properly, and reinstall the J-Link driver in the latest version if necessary.
2.3 Example Running
The GR551x SDK provides various example projects, which are in SDK_Folder\projects. After completing
power supply and connection settings, you can run any example project. For more information about compiling
and downloading example projects with Keil, see the GR551x Developer Guide.
2.4 Mobile Connection Test
Install GRToolbox App on a mobile phone (Android), and enable Bluetooth on the phone. Run the GRToolbox to
start scanning and establish connection with the GR5515 SK Board.

Hardware Overview
Copyright © 2020 Shenzhen Goodix Technology Co., Ltd. 3
3 Hardware Overview
3.1 Hardware Layout
The top view and the bottom view of a GR5515 SK Board are shown in Figure 3-1 and Figure 3-2 respectively. The
board mainly integrates an interface microcontroller unit (MCU), a power module, Arduino Uno Shield Connectors,
buttons and LEDs, a LCD connector, a Bluetooth LE RF module, and an on-board QSPI flash.
Power module Interface MCU Buttons and LEDs Bluetooth LE RF
module
Arduino Uno Shield Connectors Arduino Uno Shield Connectors LCD connector
Figure 3-1 Hardware layout of GR5515 SK Board (top view)

Hardware Overview
Copyright © 2020 Shenzhen Goodix Technology Co., Ltd. 4
Lithium battery On-board QSPI Flash
Figure 3-2 Hardware layout of GR5515 SK Board (bottom view)
3.2 Block Diagram
The following block diagram of a GR5515 SK Board shows connections between modules.
External supply
Power
Switch (S5)
Battery
LDO (1.8 V,3.3 V)
USB
POWER +5 V
Communication
Interface MCU GR5515
Level shift
Power
Switch (S6)
J-LINK Osc.
32.768 kHz OSC. 32 MHz
LEDs
Buttons
Matching network
GPIO/Arduino Uno
LCD
Antenna
Data
5 V
3.3V
SWD
UART
Figure 3-3 Block diagram of GR5515 SK Board