TIMMO Timing Concepts Sample Clauses

TIMMO Timing Concepts. Since the definition of EAST-ADL2, the ITEA TIMMO (TIMing MODel) project has continued working on defining timing properties and requirements in the context of AUTOSAR and EAST- ADL2. The timing concept of XXXXX XXXX (Timing Augmented Description Language) is based on the notion of events, event chains and constraints. Events are defined for the various occurrences that can be observed, for example the transmission or arrival of data on a port. An event chain identifies one or more stimuli and one or more responses, and serves as a definition of relations between groups of events. Time chains can refer to other time chains which are then called time chain segments. The segments are neither parallel nor sequential to their composing timing chain, but act as a decomposition. A constraint may be associated with the segment to define temporal restrictions on the segments, in terms of maximal delays or minimal reactions. Constraints may also be defined directly on a set of events, for example setting bounds on synchronization or rate. Figure 13 contains a part of the TADL metamodel. It is based, just like AUTOSAR and EAST- ADL2, on the AUTOSAR metamodelling rules, so an integration in the EAST-ADL2 metamodel is uncomplicated.