Matrix representation in generated C code / asap2 file

Question

Thomas Becker 2015-6-17

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/224259-matrix-representation-in-generated-c-code-asap2-file

评论： Thomas Becker 2015-6-18

Hi there,

when I generate code from a Simulink model with calibratable vector and matrix parameters, both parameters are generated as 1-dimensional arrays in C code.

Initialization m-file

ADS_InitValue_1x1  = Simulink.Parameter(zeros(1,1));
ADS_InitValue_1x12 = Simulink.Parameter(zeros(1,12));
ADS_InitValue_5x11 = Simulink.Parameter(zeros(5,11));

a2l file (reduced)

/begin CHARACTERISTIC 
  /* Name                   */      ADS_InitValue_1x1  
  /* Type                   */      VALUE 
/end CHARACTERISTIC
/begin CHARACTERISTIC 
  /* Name                   */      ADS_InitValue_1x12  
  /* Type                   */      VAL_BLK 
  /* Array Size             */
  NUMBER                            12
/end CHARACTERISTIC
/begin CHARACTERISTIC 
  /* Name                   */      ADS_InitValue_5x11  
  /* Type                   */      VAL_BLK 
  /* Array Size             */
  NUMBER                            55
/end CHARACTERISTIC

Unfortunately, with this result it's not possible to distinguish between vector and matrix parameters later in the calibration system.

Is there any possibility to change that behaviour? Or to distinguish between vector/matrix when parsing the a2l file?

Thanks in advance, Thomas

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Answer 1

Andrew Schenk 2015-6-18

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/224259-matrix-representation-in-generated-c-code-asap2-file#answer_183182

All Simulink signals and parameters will be code generated as 1-D vectors. If all your variable names are consistent with the format you have shown above, you can parse the Name characteristic to extract the NxM portion. If N > 1, the parameter is a matrix.

Another possibility would be to modify the TLC used to generate the a2l file as described in the following documentation: http://www.mathworks.com/help/rtw/ug/customizing-an-asap2-file.html

You would need to modify the asap2scalar.tlc file to include an additional characteristic or comment with the MATLAB parameter dimension.