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Introduction

The Heart Rate Sensor & Running Speed and Cadence Sensor Relay (HRS RSCS Relay) example demonstrates how to apply GR551x System-on-Chips (SoCs) in scenarios with multi-roles (Peripheral and Central) and multi-connections, to enable functions of an HRS RSCS Relay device. The HRS RSCS Relay device can serve as both a collector and a sensor.

  • Collector

    As a GATT Client, the HRS RSCS Relay device receives measurement data from heart rate sensor as well as running speed and cadence sensor.

  • Sensor

    As a GATT Server, the HRS RSCS Relay device sends the received data to other collectors, such as GRToolbox, a Bluetooth Low Energy (Bluetooth LE) debugging App for GR551x SoCs.

This document introduces how to use and verify an HRS RSCS Relay example in the GR551x Software Development Kit (SDK).

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

Table 1 Reference documents
Name Description

GR551x Sample Service Application and Customization

Introduces how to apply and customize Goodix Sample Service in developing Bluetooth LE applications based on GR551x SDK.

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.

Bluetooth GATT Spec

Provides details about Bluetooth profiles and services. Available at www.bluetooth.com/specifications/gatt.

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/.

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