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FreeRTOS Quick Start Guide

Also see the Getting Started With Simple FreeRTOS Projects documentation, and for the best possible start, the FreeRTOS books. There is even a FreeRTOS Windows port to allow experimentation with FreeRTOS on a Windows host, using free tools, and without any special hardware requirements. New developers are also encouraged to make use of the configASSERT() macro.

RTOS quick start instructions

The demo application documentation page also provided essential RTOS port specific information, including how to write FreeRTOS compatible interrupt service routines, which is necessarily slightly different on different microcontroller architectures.

To get up an running in minutes - follow these easy instructions:

Port documentation pages are grouped by device manufacturer. Expand the list of supported devices, then click the manufacturer of interest to be taken to a list of demo documentation pages.

Locating documentation for the FreeRTOS API

1. Obtaining the RTOS source code:

   Download the FreeRTOS .zip file. This contains the RTOS kernel source code and demo projects for every official port. Don't be overwhelmed by the amount of files, only a tiny subset are required for one demo! Unzip the files into a convenient directory.

2. Locate the relevant documentation page:

   Expand the "Supported Devices & Demos" menu item, then click the "Officially Supported Demos" link (see image on right) to view a list of microcontroller vendors that are supported by FreeRTOS. Clicking a microcontroller vendor name will take you to a list of documentation pages specific to that vendor.

   Refer to the Modifying a demo application to run on different hardware page should a pre-configured port not be available for your development board.

3. Building the project:

   Follow the instruction on the RTOS port documentation page to locate the required project within the FreeRTOS directory structure, then open and build the demo project.

4. Running the demo application:

   Follow the instructions on the RTOS port documentation page to setup the target hardware, download and execute the demo application. The same documentation page will provide information on the functionality of the demo application so you know if it is executing correctly or not.

That is it!

Next steps - further reading

Following are some shortcuts to valuable information for the serious developer:

• The FreeRTOS API reference is accessible through the API Reference menu. For example, the image on the right shows how to access documentation on all the FreeRTOS Task Control functions. A pdf Reference Manual is also available.
• Understanding the FreeRTOS directory structure.
• An introduction to the RTOS demo application projects.
• Modifying an RTOS demo application to run on different hardware.
• Understanding the FreeRTOS license.
• FAQ: My application does not run, what could be wrong?
• Using configASSERT() to trap user errors
• Obtaining free support.
• Obtaining commercial support and development services.
• Understanding the differences between 'Supported' and 'Contributed' RTOS ports.