Evaluation Environment for AUTOSAR-Autocode in Motor Control ...

2.8 Example
them “types” or “ interfaces ”. Additionally, it is not needed to have different names
for these packages.
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swc root
swc1
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pport1
/interfaces/SR Int16
rport1
/interfaces/CS string to int
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Listing 2.3: Example description of SWC1
To describe the component SWC1, the code of listing 2.3 is used. Here are the two
ports of SWC1 specified. Listing 2.4 shows the internal behavior of SWC1. There are
the runnables and the ports, which are accessed by the runnables, described. This is
needed to generate the API and to provide consistency for the communication. The
access is specified with DataSendPoints and a SynchronousServerCallPoint. Runnable
run11 writes both values to the sender port pport11, whereas run12 only writes the
value intValue1.
The runnables are triggered by the specified timing events. One runnable can be
triggered by more than one event, but this case is not shown here.
At this point it can be seen that every part is very flexible handled with references. It
is also permitted to have more than one internal behavior for one Software Component
specified, but just one can be used. This is done by the instantiation of the SWC, which
is part of the system description and not shown here. So it is e.g. possible to reuse a
definition of a Software Component and reuse it with different internal behaviors. As
also can be seen in the configuration, it is possible for an internal behavior to support
multiple instantiation, which should also not be considered here, because it does not
contribute to the understanding and would just complicate the example.
2.8.2 The Generated Source Code
After calling the RTE generator with that configuration, it should produce the auto
generated part of the RTE. This part contains the API for the SWCs. The interesting
extract for SWC1 is shown in listing 2.5. In the last two lines the functions for the
runnables are declared. These functions are called when a runnable is executed. This
means for this example that the functions are called when the timing events occur. So
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