Volume I - Getting Started With MPLAB Harmony Libraries and Applications - RTOS Demonstrations Help

Nov 2, 2026

RTOS Demonstrations Help describes how MPLAB Harmony’s layered, modular framework supports building PIC32 embedded applications using interoperable software “building blocks.” It explains MPLAB Harmony’s ecosystem, including demonstration applications, third-party offerings, and tools like the MPLAB Harmony Configurator integrating with MPLAB X and XC32. The document also covers legal notices and OPENRTOS evaluation-license terms, outlines RTOS-based firmware demo packages, hardware requirements, and how to run projects on Microchip boards, with additional notes on µC/OS-II and µC/OS-III start-up files and exception vectors.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages23

Reading Time58 min

AccessFree to download

RTOS Demonstrations Help

MPLAB Harmony Integrated Software Framework

Legal Notices

Applications Help

RTOS Demonstrations

Introduction

RTOS Demonstration Applications Help

Source Code Disclaimers

OPENRTOS

Micriµm

RTOS Demonstrations Help MPLAB Harmony Integrated Software Framework © 2013-2018 Microchip Technology Inc. All rights reserved. Volume I: Getting Started With MPLAB Harmony Libraries and Applications This volume introduces the MPLAB® Harmony Integrated Software Framework. Description MPLAB Harmony is a layered framework of modular libraries that provide flexible and interoperable software "building blocks" for developing embedded PIC32 applications. MPLAB Harmony is also part of a broad and expandable ecosystem, providing demonstration applications, third-party offerings, and convenient development tools, such as the MPLAB Harmony Configurator (MHC), which integrate with the MPLAB X IDE and MPLAB XC32 language tools. Legal Notices Please review the Software License Agreement prior to using MPLAB Harmony. It is the responsibility of the end-user to know and understand the software license agreement terms regarding the Microchip and third-party software that is provided in this installation. A copy of the agreement is available in the /doc folder of your MPLAB Harmony installation. The OPENRTOS® demonstrations provided in MPLAB Harmony use the OPENRTOS evaluation license, which is meant for demonstration purposes only. Customers desiring development and production on OPENRTOS must procure a suitable license. Please refer to one of the following documents, which are located in the /third_party/rtos/OPENRTOS/Documents folder of your MPLAB Harmony installation, for information on obtaining an evaluation license for your device: • OpenRTOS Click Thru Eval License PIC32MXxx.pdf • OpenRTOS Click Thru Eval License PIC32MZxx.pdf TIP! Throughout this documentation, occurrences of refer to the default MPLAB Harmony installation path: • Windows: C:/microchip/harmony/ • Mac OS/Linux: ~/microchip/harmony/ Applications Help This section provides information on the various application demonstrations that are included in MPLAB Harmony. Description Applications determine how MPLAB Harmony libraries (device drivers, middleware, and system services) are used to do something useful. In a MPLAB Harmony system, there may be one main application, there may be multiple independent applications or there may be one or more Operating System (OS) specific applications. Applications interact with MPLAB Harmony libraries through well defined interfaces. Applications may operate in a strictly polling environment, they may be interrupt driven, they may be executed in OS-specific threads, or they may be written so as tobe flexible and easily configured for any of these environments. Applications generally fit into one of the following categories. Demonstration Applications Demonstration applications are provided (with MPLAB Harmony or in separate installations) to demonstrate typical or interesting usage models of one or more MPLAB Harmony libraries. Demonstration applications can demonstrate realistic solutions to real-life problems. Sample Applications Sample applications are extremely simple applications provided with MPLAB Harmony as examples of how to use individual features of a library. They will not normally accomplish anything useful on their own. They are provided primarily as documentation to show how to use a library. RTOS Demonstrations This section provides descriptions of the RTOS demonstrations. MPLAB Harmony is available for download from the Microchip website by visiting: [http://www.microchip.com/mplabharmony](http://www.microchip.com/mplabharmony. Once you)[. Once you](http://www.microchip.com/mplabharmony. Once you) are on the site, click the Downloads tab to access the appropriate download for your operating system. For additional information on this demonstration, refer to the “Applications Help” section in the MPLAB Harmony Help. Introduction RTOS Demonstration Applications Help Description This distribution package cont

FAQs

What is MPLAB Harmony, and how does it relate to RTOS demonstrations?

MPLAB Harmony is a layered framework of modular libraries for building embedded PIC32 applications. It integrates services and stacks with RTOS-running projects included as RTOS demonstration firmware.

What license conditions apply to the OPENRTOS demonstrations in MPLAB Harmony?

The OPENRTOS demonstrations use an evaluation license intended only for demonstration. For development and production, users must procure a suitable license and consult the provided OPENRTOS click-through evaluation license documents.

What special startup and exception-vector steps are required for Micriµm µC/OS-III on PIC32?

The µC/OS-III demonstrations add a crt0 .S startup file and set the linker option to not link startup code. Because the general exception vector is located in crt0 .S, the demo overrides that interrupt source for OS-specific functionality, and custom implementations must add crt0 .S and override the general exception interrupt vector.

Nov 2, 2026

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