MATLAB: M script: How to find which block is connected to which block

blocksconnectionm-script

Hello,

I need to check if a NOT block is connected to/is present just before an "if" condition block. I am unable to write a m script for this scenario. I tried using port handles, port connectivity but somehow I am unable to do it. Any suggestions would be really helpful and much appreciated. Thank you!

Best Answer

>> load_system(myModel);
>> allBlks = find_system(myModel, 'Type', 'block')

Now this will give you all the blocks in the model. So, you can iterate through and find your If block in the cell-array. Lets, say it is the k-th index.

>> allPorts = get_param(allBlks{k}, 'PortConnectivity')

This will have handles for the all the ports. Now, the 1st port is the inport in the If block. You can check the name/block type which is connected to this port.

>> srcBlkType = get_param(allPorts(1).SrcBlock, 'BlockType')
>> srcBlkName = get_param(allPorts(1).SrcBlock, 'Name')

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add_block's output will be the handle of the newly added block. From this, the name of the newly inserted block can be found out.

eg;

blockHandle = add_block(gcb, gcb, 'MakeNameUnique', 'on');

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If you would like to see which blocks are unconnected, get a handle to the ports of the block you would like to check, then use delete_line to remove unconnected lines. The example below will try to delete the unconnected Outport blocks within a loop.

open_system('test')
blks = find_system(bdroot, 'Type', 'block');
listblks = get_param(blks, 'BlockType') ;
for i = 1:length(listblks)
      if strcmp(listblks(i),'Outport')
          lines = get_param(blks(i),'PortConnectivity');
          if lines{1,1}.SrcBlock == -1
              disp(blks(i))
              h = get_param(blks(i),'LineHandles');
              delete_line(h{1,1}.Inport);
              delete_block(blks(i));
          end
      end
end

Best Answer

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