MATLAB: How to find block Priorities in model using m-script

block prioritiesMATLABsimulink

Hello,

I would like find block priorities in complete model. I tried to find like below code

allblocks = find_system(bdroot(gcs));
for k=1: length(allblocks)
   eachBlock=allblocks{k};
   Priorities= get_param(eachBlock,'Priority');
end

When I run this code I am getting below error: "Parameter 'Priority' is ignored when 'SolverType' is variable-step"

Please, could someone help me on this?

Best Answer

Looks like this only happens when that eachBlock variable is referring to a model (and not an individual block).

You can filter your search to include only blocks, and not models. Also, you could remove the for-loop since you can pass in a cell array of block names into get_param. Try this:

blocks = find_system(bdroot,'Type','Block');
priorities = get_param(blocks,'Priority');

- Sebastian

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MATLAB: Resource acquire block programmatic use

Hi Marco,

To know the BlockType of any block, add the block to a model and select it. Then in MATLAB window, type the following:

>> h = get_param(gcb, 'Handle');
>> get(h, 'BlockType')
ans =
    'EntityResourceAcquirer'
>>

To add a EntityResourceAcquirer to a model, you can type:

>> add_block('built-in/EntityResourceAcquirer', [gcs '/R1'], 'MakeNameUnique', 'on')

Similarly to know the block parameters for a block, you can select the block in the model and use:

>> get_param(gcb, 'DialogParameters')
ans = 
  struct with fields:
              ResourceName: [1×1 struct]
      ResourceAmountSource: [1×1 struct]
            ResourceAmount: [1×1 struct]
...

Then use the following to set the block's values:

>> set_param(gcb, 'ResourceName', 'Resource1', 'ResourceAmountSource', 'Dialog', 'ResourceAmount', '1')

Hope that helps!

Regards,

Krishna

MATLAB: Find Triggered subsystem in a simulink model

One potential method would be to generate a list of all the blocks in your Simulink model, and then find blocks which are of the type 'TriggerPort'. From there, you just need to determine the parent block of the 'TriggerPort' which gives you the Triggered Subsystems that you are looking for. You can accomplish all of these operations programmatically via the get_param and find_system functions.

Here is a quick little example script that performs the operations that I described above. The find and strcmp functions are used to determine which blocks are of the type 'TriggerPort' from the blockTypes cell list.

% Generate a cell list of all blocks in the current Simulink model
blockList = find_system(bdroot,'Type','block');
% Generate a list of the block types
blockTypes = get_param(blockList,'BlockType');
% Find all blocks with trigger ports (enabled subsystems)
indexTrigger = find(strcmp(blockTypes,'TriggerPort'));
% Interate through all found triggers and determine "parent" subsystem
for i = 1:numel(indexTrigger),
    triggeredSubs{i} = get_param(blockList{indexTrigger(i)},'Parent');
end

Hope this helps to get you started!

Best Answer

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MATLAB: Find Triggered subsystem in a simulink model

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