Tracing signals in script

2018 5 22
2 个回答
更新时间：2024 5 16
11 次查看（30 天）

0 个投票

I am trying to "trace" signals through a model, from the outports back to the inports. My script will go into a subsystem in the model, however, when it gets to the inports in that subsystem, I do not know how to find the corresponding signal/source block from the level above. Can anyone provide some help on how to do this? To trace into the subsystem, I am using:
subhandle = find_system(handle, 'LookUnderMasks', 'all', 'FollowLinks', 'on', 'SearchDepth', 1, 'BlockType', 'Outport');
Perhaps there is something similar to use to get back up a level?
I am also having trouble finding a matching GoTo block when I get to a From block, so any help would be appreciated. Thanks

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回答（2 个）

Fangjun Jiang
Fangjun Jiang 2018-5-22
编辑：Fangjun Jiang 2018-5-23

0 个投票

To find out the source block that is connected to the Inport block in F14
f14;
InportBlock='f14/Controller/alpha (rad)';
PortNumber=str2double(get_param(InportBlock,'Port'));
Parent=get_param(InportBlock,'Parent');
PortCon=get_param(Parent,'PortConnectivity');
SrcBlock=getfullname(PortCon(PortNumber).SrcBlock)

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Christopher Lotysz
Christopher Lotysz 2018-5-24
Thank you for the reply, this seems to work. Do you have any insight to find the matching GoTo block from a From block? Or finding the correct Outport inside of a subsystem?
Thanks
Fangjun Jiang
Fangjun Jiang 2018-5-24
编辑：Fangjun Jiang 2018-5-24
To find the matching GoTo block, you will need to get the "GotoTag" of the From block, then use find_system() to find the Goto block with the matching "GotoTag".
To find the connection of an Outport inside of a subsystem is similar to above, get the Outport port number and then PortCon(PortNumber).DstBlock. Note that there might be multiple destinations.
Christopher Lotysz
Christopher Lotysz 2018-5-31
Thank you!
When I use Port Connectivity, I am able to use PortCon(PortNumber).DstBlock to find the destination blocks, however, what I want to know is the "source block" for the Outports of the subsystem. PortCon does not give the handles of the ports themselves which makes it difficult. Any ideas? Thanks!
Fangjun Jiang
Fangjun Jiang 2018-5-31
Get the 'PortConnectivity' of the Outport block itself, then get the .SrcBlock
Christopher Lotysz
Christopher Lotysz 2018-5-31
Right, but how do I find the Outport block itself? That was my original question.
Fangjun Jiang
Fangjun Jiang 2018-5-31
Every block has its "PortConnectivity" value. You can use it to trace the block's connection to the source or destinations. The exception is the Inport and Outport block. You need to get the "PortConnectivity" of its "Parent" (subsystem) block, combine with the port number to get the source for the Inport block and destinations for the Outport block.
If this still won't solve your problem, please use the f14 example model, specify what is known (such as block path, subsystem name, port number, etc) and what is the expected target.
Christopher Lotysz
移动：Fangjun Jiang 2024-5-16
Is the F14 model a fictional one, or is there a model I can view somewhere to generate an example? Thanks
Fangjun Jiang
Fangjun Jiang 2018-6-7
移动：Fangjun Jiang 2024-5-16
f14 is an example model in Simulink

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omar elkawokgy
omar elkawokgy 2024-5-16

0 个投票

I suggest you use line instead as so:
%getting root level signals
All_Lines = find_system('ModelName','FindAll','on', 'SearchDepth',1, 'type', 'line');
for i = 1 : length(All_Lines)
outportLineList = get_param(All_Lines(i), 'TraceSourceOutputports');
.
.
%similarly
inportLineList = get_param(All_Lines(i), 'TraceDestinationInputports');
What it does it memics the hilite to source option we have in GUI but it gets you list of objects to play with.

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