Add line between blocks using handles

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?

[Chiara]

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?

Answer 1

[Kaustubha Govind]

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').

[Chiara]

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]

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]

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]

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]

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']);

[Kishankumar Dholariya]

how to connect Trigger port with inport? Trigger port is not connecting with this method.

Answer 2

[Jianguang Ban]

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