The importance to build relevant peripheral environment in the testing process for complex embedded software is becoming higher. This paper discussed the current design method of simulation test environment for the embedded software and then presented a modelling method which is used to build peripheral simulation environment for the SUT (system under test) through ICD (interface control data) documents and the software requirement specification. Using this method, the peripheral environment simulation tool which consisted of relevant database and simulation model was set up with Ruby program language. This tool could provide necessary control commands and data support just like in a real running environment for the SUT. Furthermore, a DSL (domain-specific languages) design method for this domain was researched on the basis of the model. The experiment result has demonstrated that it's feasible to set up a peripheral environment for embedded system with our simulation tool.
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