If I have arxml file with a Ethernet Cluster define in it.Then how to find out if it has SOME/IP PDU in it?
You should look for an ISignalIPdu where an ISignal is mapped to it and the ISignal aggregates a SOMEIPTransformationISignalProps that in turn references a SOMEIPTransformationDescription that fulfills constr_3128 in the role transformer.
Related
How I can define Data Mapping in the arxml file .
I want to define relation between system signal and datatypes.
I don't know what are the rules i need to follow while doing this?.Is there help available for this on internet.
Thanks
As per my last post I got the clue to understand ATP Splitability feature of AUTOSAR. But I don't find any link how the splitability is presented in an arxml file. Any info on this? Because this aplitability is a stereotype and has present in annotated format. currently I am lacking the info on how the stereotype elements looks inside an AUTOSAR ARXML or arxml file.
The stereotype isn't represented at all in an ARXML file. The stereotype just indicates to creators of an AUTOSAR tool that tools loading the model shall accept the existence of the same model element (aggregated or referenced in the stereotyped role in the meta-model) in two different ARXML files loaded into the tool.
Is this UML consistent with the text below?
Instead of trying to either define many subclasses or introduce
multiple inheritance, we can instead define a set of roles that the
device is meant to play. (It should be noted that this is another
reason why the concept of a managed device is a good one – now, we can
define a base concept of a managed device, and model its functionality
by associating one or more roles to it as appropriate). This solves
the mess of having the same generic function (such as routing)
assigned to two different types of devices that implement that same
generic function in different ways, producing different subsets of
functionality.
I believe that the UML specifies that each Device can have 0 or 1 DeviceRoles. A colleague asserts that the UML specifies that each DeviceRole can belong to a maximum of one Device. In either case, the UML seems to not reflect that a Device can aggregate a set of roles.
The UML and text is extracted from TMForum's Information Framework (SID):
Physical Resource Business Entities
Information Framework Suite
GB922 Physical Resource
Release 15.0.1
November 2015
Thanks, Greg
The UML diagram is consistent with the text. It clearly says that the device aggregates zero or more device roles and a device role can be played by zero or one device. In UML, multiplicity is notated adjacent to the type it quantifies.
It would help if the property names were written at the ends of the associations.
I have worked on this document and created a data model from it. In real world experience a resource, for example a physical resource like a mikrotik router can have roles of a router and firewall at the same time. So the model has to let you fulfill the need of several roles for a single resource.
I hope this example will clarify the subject.
Considering the following block diagram:
I would like to model a continuous flow from PressureSensor.pressure to LPF.input.
Is it compliant to the SysML 1.4 specification to model this flow without using ports like in the following diagram?
Or do I have to use ports like in the following diagram?
From the SysML spec (1.3):
The main motivation for specifying ports and flows is to enable design
of modular, reusable blocks with clearly defined ways of connecting
and interacting with their context of use.
In other words: you can of course use direct connectors, but you will loose the ability to specify more details about what is going on along those connectors.
There is a difference between a non-abstract block and a port typed with an interface. A non-abstract block cannot be substituted. In contrast, something with a matching interface is easily substituted.
Think about two analogies:
One brand of HDTV will only work with one brand of cable TV box. If you want to use another brand of HDTV, you would have to emulate the original brand of HDTV completely because of some undocumented inter-dependency.
Any brand of HDTV that has an HDMI interface will work with any brand of cable TV box that has an HDMI interface.
Which situation would you rather have in your living room?
I would like to know what is the difference between attributes and service in GATT in BLE specification, and where we can find attributes, are they in service, characteristics or in descriptors?
In summary ... services, characteristics, and descriptors ... are attributes :-)
The BLE standard provides the ATT protocol that defines the concept of attributes. All attributes are defined inside a table and they have a handle, a type (with a UUID), a value (and permissions).
On top of ATT protocol in the BLE stack, you have GATT and GAP. The GATT protocol defines services, characteristics, and descriptors and each of them is an attribute.
For example, a characteristic is an attribute with a handle, a type (a UUID that tells us that the attribute is a characteristic) and a value (the characteristic properties with a handle to the attribute value and so on). Inside the characteristic, you have an attribute that is the value of the characteristic and one or more descriptors that are themselves attributes.
You can see the attribute concept as the abstract type you can define concrete types like service, characteristic and descriptors.
I can suggest seeing the following video (intro on BLE) by Nordic.