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Rapid Prototyping Embedded Systems Using Ethernut Boards

Often it is necessary to be able to rapidly prototype an embedded system to proof a concept or for actually developing a product. Typically, this means that one has the need for an existing microcontroller based design including usual components like a General Purpose Input/Output (GPIO) interface, an IEEE 802.3 compliant Ethernet Media Access Controller (MAC), an Universal Asynchronous Receiver Transmitter (UART) as well as other common peripherals. Plus, ideally, one would like to have the source code of existing firmware for use as a building block besides the hardware itself. In this paper, the family of the Ethernut microcontroller reference design boards and Nut/OS, the real time operating system available for them, are presented. Together, these hardand software components nicely fit the job. Finally, by giving real-world examples of prototypes that have been built upon this combination, the viability of this approach is demonstrated.