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When designing a real time control system, a fast data transfer between the different pieces of hardware must be guaranteed since synchronization and determinism have to be respected. One efficient solution to cope with these constraints is to embed the data collection, the signal-processing and the driving of the acting devices in FPGAs. Although this solution imposes that the whole design is being developed for an FPGA, in pure hardware, it is possible to open the part dedicated to the signal processing to non HDL (Hardware Description Language) specialists; the choice has been made here to develop this part under System Generator, in Simulink. Another challenge in such system design is the integration of real time models on already pre-configured hardware platforms. This paper describes with few examples how to interface such hardware with HDL System Generator control systems blocks. The advantages of Simulink for the simulation phase of the design as well as the possibility to introduce models dedicated to the tests are also presented.
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