Getting 'empty' Compiled Port Data Types

Question

Siddhesh Wani 2023-7-3

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1991123-getting-empty-compiled-port-data-types

评论： Paul 2023-7-8

I'm trying to write a script to get datatypes of an inport and a outport of a subsytem/block. When I run following command:

get_param(port_handle,'CompiledPortDataType')

an empty array/structure is returned. Model is compiled before running this command. 'CompiledPortDataDimensions' also returns an empty results.

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Paul 2023-7-4

I had similar issues in this Question. Never got it sorted out and never contacted Tech Support.

If you do get this sorted out, please post the solution either here and/or in the linked question.

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

VBBV 2023-7-3

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1991123-getting-empty-compiled-port-data-types#answer_1266308

编辑：VBBV 2023-7-3

在 MATLAB Online 中打开

Run the model once (insted of just compiling) and check if model generates any data from ports and call or run the command

get_param(port_handle,'CompiledPortDataType')

Possibly no data might have been generated by model

4 个评论
显示 2更早的评论隐藏 2更早的评论

VBBV 2023-7-4

编辑：VBBV 2023-7-4

Ok. Test your model with valid inputs or input range. Before running your model, check simulation settings also e.g. time scale for simulation etc. A reasonable time duration. If the same problem exists then verify for any model inconsistencies.

BTW , how is the data being read from I/O ports ? Do you use read or some other functions to read data from ports ?

Siddhesh Wani 2023-7-4

Hi @VBBV,

This model is interfaced with other model for reading data. Even if I connect a constant block to inport of model or any subsystem inside model, I dont get the compiled data types. I receive following output after running command:

get_param(outports,'CompiledPortDataType')

ans =

3×1 cell array

{0×0 char}

I even tried creating a simple test model (few inports, outports and a subsystem) and check for this command. It is not working in new model also. I'm not sure if I'm getting a correct port handle. I'm running following commands in order:

sys = get_param('test1','Handle');

list_of_subsystems = find_system(sys,'BlockType','SubSystem');

ports = get_param(list_of_subsystems(1), 'PortHandles');

inports = ports.Inport;

get_param(inports,'CompiledPortDataType')

Is there any other way to get port handles and read datatype? I would like a way to specify the model name (not the way using 'gcbh').

请先登录，再进行评论。

Answer 2

Andy Bartlett 2023-7-7

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1991123-getting-empty-compiled-port-data-types#answer_1269078

编辑：Andy Bartlett 2023-7-7

在 MATLAB Online 中打开

Set model in compile mode to access data types

This may be changing, but historically at least, compiled port data types are available only when the model is actively in compiled mode.

mdl = 'fxpdemo_feedback';
open_system(mdl)
% "Lock" model in compiled mode
%
% NOTE: you will not be able to edit or even close model
%       until compiled mode is terminated !!!
%
% TIP: Use try catch to avoid being unwittingly stuck in compile mode
%
try
    eval([mdl,'([],[],[],''compile'')']);
    blk1 = 'fxpdemo_feedback/A2D';
    pdt1 = get_param(blk1,'CompiledPortDataTypes');
    blk2 = 'fxpdemo_feedback/Controller/Combine Terms';
    pdt2 = get_param(blk2,'CompiledPortDataTypes');    
catch
end
eval([mdl,'([],[],[],''term'')']);
pdt1, pdt2
pdt1 = struct with fields:
      Inport: {'double'}
     Outport: {'sfix8_En4'}
      Enable: []
     Trigger: []
       State: []
       LConn: []
       RConn: []
    Ifaction: []
       Reset: []
       Event: []
pdt2 = struct with fields:
      Inport: {'sfix32_En12'  'sfix32_En12'}
     Outport: {'sfix32_En12'}
      Enable: []
     Trigger: []
       State: []
       LConn: []
       RConn: []
    Ifaction: []
       Reset: []
       Event: []

3 个评论
显示 1更早的评论隐藏 1更早的评论

Andy Bartlett 2023-7-7

1) Yes, there is definitely a more modern syntax to get into compiled mode that what I should. The command you gave looks correct (but I didn't test it).

2) Yes, "must be in compiled mode" is more correct / clearer IMHO.

3) Yes, when stopped in the Simulink debugger, the model should still be "in compiled mode."

Paul 2023-7-8

在 MATLAB Online 中打开

Hi Andy,

Thanks for the response. It turns out that this command

set_param(gcs,'SimulationCommand','compile');

results in an error.

Do you know if there is a doc page that discusses all of the valid setting for SimulationCommand? I can only find example uses, but not a complete list.

请先登录，再进行评论。