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Introduction

Goodix provides a custom Device Synchronization Profile (DSP) example that enables synchronization of timing sequences between devices through parameter modification on a mobile App (GRToolbox). This means that a group of devices can operate in synchronous mode under one timing source.

This document introduces how to use and verify the DSP example in a GR551x Software Development Kit (SDK).

Before getting started, you can refer to the following documents.

Table 1 Reference documents
Name Description
GR551x Developer Guide Introduces GR551x SDK and how to develop and debug applications based on the SDK.
Bluetooth Core Spec

Offers official Bluetooth standards and core specification from Bluetooth SIG.

J-Link/J-Trace User Guide

Provides J-Link operational instructions. Available at www.segger.com/downloads/jlink/UM08001_JLink.pdf.

Keil User Guide Offers detailed Keil operational instructions. Available at www.keil.com/support/man/docs/uv4/.
GR551x Bluetooth Low Energy Stack User Guide Introduces the Bluetooth LE Protocol Stack supported by GR551x System-on-Chips (SoCs).

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