CFB Software


An Integrated Software Development System for ARM Cortex-M Microcontrollers and Xilinx FPGA Systems

What is Astrobe?

Astrobe is a complete integrated embedded software rapid development system running on Windows. It includes a multi-file, fully featured, syntax-aware programmer's editor, native code compiler, linker and builder, program uploader and a serial terminal. Use it to develop reliable software to run on the powerful 32-bit ARM Cortex-M3, Cortex-M4 and Cortex-M7 families of microcontrollers.

There is also a free version available for developing software to run on Xilinx Artix-7, Spartan-7 and Spartan-6 FPGA-based systems.

Install and Go

Installation of the system takes minutes from a single setup file. Not the days or weeks of frustration associated with cobbling together a 'tool-chain'  from a variety of sources. The startup files, library modules and examples included with Astrobe enable you to start writing your applications without having to work from scratch. The source code of these modules is included with both the Professional and Personal Editions allowing you to tailor them to suit your specific requirements.

Astrobe has been tested with a range of Cortex-M3, Cortex-M4 and Cortex-M7 development boards using NXP and STM microcontrollers. No special-purpose hardware is needed to program the microcontrollers with these boards. Astrobe uploads the compiled code to the target from your PC via an RS232 or USB connection and allows you to communicate with your application in its serial terminal window.

A Modern Language

Astrobe uses the latest version of the programming language Oberon. Its carefully designed features allow you to develop efficient, reliable, high- and low-level 32-bit native code embedded software without the arbitrary quirks and complexities associated with using C or assembler. No more manual makefiles, endless compiler switches, unpredictable behaviour etc. etc.

Bug-free Tools

Yes - it's hard to believe but it is almost true. The compiler was not designed to target every CPU architecture under the sun. It was developed from the ground up specifically to support ARM targets so it is compact and comprehensible. Unlike other compilers, its size is measured in thousands, not hundreds of thousands (or even millions in some cases!) lines of code. The end-result is a very robust system and any compiler bugs reported have been fixed in the subsequent release.

Troubleshooting your Code

Astrobe identifies many common programming errors at compile / link time before you even run your program; most others are automatically trapped at runtime. The system automatically identifies the point of failure by module name and source code line number so valuable time is not wasted trying to track down spurious side-effects.

Available Editions and Features

There are Starter, Personal and Professional Editions of Astrobe for Cortex-M to suit different types of users. Refer to the relevant Feature Matrix for a summary of everything that is included in each package:  

Help Files

Download the Help file included with Astrobe for all the details of how to use Astrobe. A complete set of screenshots and Getting Started examples are included:


Download PDF documentation: the Oberon Language Report, the Oberon Programmers Guide and the Cortex-M3, Cortex-M4 and Cortex-M7 editions of Oberon for Microcontrollers.


Try the ready to compile and run source code examples distributed with Astrobe - such as the example code for a simple LED-blinking program. 

Additional source code examples can be viewed and downloaded from the Astrobe forum.

Download Oberon programming text books for source code examples used to solve general programming tasks.

Technical Support

Quick and accurate technical support is vital to the usefulness of any software development system. Technical support is available on a web-based forum and by email.

System Requirements

Refer to following files for details of the System Requirements etc.