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Model-driven design (MDD) can be perceived in the recent literature as an option to deal with the increasing complexity of the design of distributed embedded real-time systems (DERTS). This paper reports some results of a research project aiming to support a MDD approach, which applies concepts of the aspect-oriented (AO) paradigm in order to improve the treatment of non-functional requirements (NFR) in the design of DERTS. A tool named GenERTiCA, which generates source code from UML diagrams and also weaves aspect adaptations, has been developed to support such MDD/AO approach. This paper presents results regarding the use of GenERTiCA to generate code and implement aspects (from a high-level framework of aspect) for the RT-FemtoJava platform, a RTSJ-based and optimized Java platform for DERTS.