Get signal name at inport of subsystem

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Hi,
I would like a subsystem to know the name of its input so that it can be used for a custom logging solution. I expect a callback on the subsystem which defines a variable could be one way to realize it. I just can't figure out how the callback should obtain the name.
Here is an illustration from the top level:
Capture.PNG
And how I would get the value from the callback.
in_subsys.PNG
Do you have any ideas how the callback would look?

采纳的回答

Fangjun Jiang
Fangjun Jiang 2019-5-20
The first case truely has the signal name. You can get it like below. In second case, you need to get the name of the Constant.
ph=get_param(SysBlockPath,'PortHandles');
sp=ph.Inport(1);
SignalName=get(sp,'Name');
  5 个评论
Fangjun Jiang
Fangjun Jiang 2019-11-19
You are right. This could be a workaround for both cases, assuming the lines are connected and labeled.
LineHandles=get_param(SysBlockPath,'LineHandles');
hLine=LineHandles.Inport(1)
SrcPortHandle=get(hLine,'SrcPortHandle');
if isequal('on',get(SrcPortHandle,'SignalPropagation'))
signal=get(SrcPortHandle,'PropagatedSignals')
else
signal=get(SrcPortHandle,'Name')
end
Ralf
Ralf 2019-11-21
That is great!
Thank you very much. It solves my problem!
Ralf

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