Ultra-light event-driven framework/RTOS for AVR

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QP (http://www.quantum-leaps.com/downloads/) is a family of ultra-light, open source, state machine-based frameworks for embedded systems. QP enables developing well-structured applications as a set of concurrently executing hierarchical state machines (UML statecharts). With QP, coding of modern state machines directly in C or C++ is a non-issue and no big design automation tools are needed.

QP consists of a universal UML-compliant event processor (QEP), a portable event-driven framework (QF), and a selection of a cooperative or full preemptive kernels (QK). Current versions of QP include: QP/C and QP/C++, which require about 4KB of code and a few hundred bytes of RAM, and the ultra-lightweight QP-nano, which requires only 1-2KB of code and just several bytes of RAM. QP is described in great detail in the book Practical UML Statecharts in C/C++, Second Edition, (http://www.amazon.com/exec/obidos/ASIN/0750687061/quantumleap06-20).

QP can work on "bare metal" processor, effectively replacing a traditional RTOS. In fact, QP allows you to choose either a cooperative or fully preemptive kernel (QK). QP/C and QP/C++ can also work with traditional RTOS/OS, such as uC/OS-II or FreeRTOS.org to take advantage of existing communication stacks (e.g., TCP/IP), or other legacy code.

The QP Development Kits (QDKs) for AVR have been recently released and are available for immediate download from http://www.quantum-leaps.com/avr.

Last Edited: Thu. Jun 26, 2008 - 05:41 PM
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Was the intention of this post to make you money or not?

http://www.quantum-leaps.com/lic...

If it was this should have been in the "Trading Post" forum but your dual licence model presumably means that "hobbyists", willing to publish their derivative work under GPL2, need pay nothing so I guess it gets to stay here for the time being.

Cliff (moderator)