Add line between blocks using handles

2013 5 15
2 个回答
更新时间：2021 10 28
18 次查看（30 天）

0 个投票

Hi, I would like to connect blocks using their handles. Do you know if it's possible?
I know that add_line function uses ports but my script is a loop and when I add two same blocks, I use add_block adding (....,'MakeNameUnique','on'), hence I can't know block's name in order to call its own port in add_line.
What I am trying to do now is to get blocks handle in sequence through gcbh, from departure to arrival block, and I want to use handles in place of ports. Can anyone help me?

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Chiara
Chiara 2013-5-15
编辑：Chiara 2013-5-15
path=getfullname(handle)
It returns 'sys/blockname'
Is there a way to have only blockname?
In add_line arguments I should add 'blockname/Portnum', shouldn't I?

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回答（2 个）

Kaustubha Govind
Kaustubha Govind 2013-5-15

1 个投票

Instead of using gcbh, please use the return argument of add_block, which will be the handle to the newly created block. To get the name of the block, you can use get_param(handle, 'Name'), to get the full path to its parent, you can use get_param(handle, 'Parent').

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Chiara
Chiara 2013-5-21
Hi, the problem is that when I add the same block by copying the one already existing, I can't know the name for the new block and I can't go to select the block in the model, cause It has to work automatically.
Kaustubha Govind
Kaustubha Govind 2013-5-21
Chiara: I understand that you don't know the name of the new block. However, you can find out the name of the new block, by using the result of your add_block command in the get_param command that I suggested.
Chiara
Chiara 2013-5-28
So, if I am not misunderstanding, should I write something similar?
h1=addblock(...);
h2=addblock(...):
path1=get_param(h1,'Parent');
path2=get_param(h2,'Parent');
port1=get_param(path1,'PortHandles');
port2=get_param(path2,'PortHandles');
add_line('sys', port1.RConn(1),port2.LConn(1));
Chiara
Chiara 2013-5-28
you wrote: [ to get the full path to its parent, you can use get_param(handle, 'Parent') ]
I have just tried this function and I don't know if the result is the one expected.
I have added a block to a model 'new'. The block's path is new/source1. If I write:
get_param(add_block(),'Parent'),
It gives:
new
Is this path the correct full path to parent? I thought it was new/source1. Where am I wrong?
Kaustubha Govind
Kaustubha Govind 2013-5-29
The parent is still only 'new', the block itself is named 'source1' in your case. You can construct the full path to the block by concatenating the two strings returned by get_param(h,'Parent') and get_param(h,'Name'). To add the line:
%Assuming both blocks have same parent
add_line(get_param(h1,'Parent'), ...
[get_param(h1,'Name') '/1'], ...
[get_param(h2,'Name') '/1']);
how to connect Trigger port with inport? Trigger port is not connecting with this method.

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Jianguang Ban
Jianguang Ban 2019-3-14
编辑：Jianguang Ban 2019-3-14

0 个投票

For this question i wrote a simple script to show how to create a model and add some inputs and outputs, and add lines for each port to a specified block. this script was run with correct results:
ModelName = 'SpdCtrl';
new_system(ModelName);
open_system(ModelName);
component_dest_name = strcat(ModelName,'/',ModelName);
%% Create and add main block
topsystemblk = add_block('Simulink/Ports & Subsystems/Subsystem',component_dest_name,'position',[165 109 600 700]);
%% Create and add inporting blocks and lines from the dependencies of main component
Horizontal = 165;
Vertical = 150;
N = 200;
M = 165;
width = N - Horizontal;
height = M - Vertical;
vertical_shift = 0;
horizontal_shift = 0;
for i = 1:1:5
vertical_shift = 50*(i-1);
horizontal_shift = 100*(i-1);
inport_dest_name = strcat(component_dest_name,'/',strcat('In',num2str(i)));
inportblk = add_block('Simulink/Ports & Subsystems/In1',inport_dest_name,'position',[Horizontal Vertical+vertical_shift N M+vertical_shift]);
terminator_dest_name = strcat(component_dest_name,'/',strcat('Terminator',num2str(i)));
terminatorblk = add_block('Simulink/Sinks/Terminator',terminator_dest_name,'position',[Horizontal+100 Vertical+vertical_shift N+100 M+vertical_shift]);
% example: add_line(component_name,'In1/1','Terminator1/1');
add_line(component_dest_name,strcat('In',num2str(i),'/1'),strcat('Terminator',num2str(i),'/1'));
end

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