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FreeRTOS is an excellent embedded real-time operating system for microcontrollers. Being light-weighted, distributed freely under MIT open-source License, and built with an emphasis on portability, tailorability, and flexible scheduling policy, it requires low RAM/ROM consumption and supports management of task, time, semaphore, message queue, and memory.

This document introduces the FreeRTOS porting example in the GR551x Software Development Kit (SDK), including usage of the example and descriptions of major source code.

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.

Keil User Guide

Offers detailed Keil operational instructions. Available at

FreeRTOS Documentation

Provides guidance on using FreeRTOS. Available at

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