How can I parse A2L file Function Section ?

Dear Users,

I would like to parse a2l file function interaction. But I could not be succussful.

I have no experience on string processing side of Matlab. Could you help me how can I get function infromations from a2l file?

Example A2L Function Section:

/begin FUNCTION

    Vehicle
    "0.0.1   Function Name"

    /begin DEF_CHARACTERISTIC
      Label_1 Label_2 Label_3 Label_4
	  
    /end DEF_CHARACTERISTIC
    /begin IN_MEASUREMENT
      Label_5
    /end IN_MEASUREMENT
    /begin OUT_MEASUREMENT
      Label_7 Label_8 Label_9
    /end OUT_MEASUREMENT
    /begin LOC_MEASUREMENT
      Mp_1 Mp_2 Mp_3 Mp_4 Mp_5 
	  
    /end LOC_MEASUREMENT
    FUNCTION_VERSION "0.0.1"

/end FUNCTION






My Code to READ A2L FUNCTION NAME AND FUNCTION DESCRIPTION


index_number=zeros(k,1);
index_number_a=zeros(k,1);
mm=0;
nn=0;

for i=1:1:k
    
    if (a(i)=="/begin FUNCTION")
        nn=i;
        index_number_a(i)=nn;
    end
end
for kk=1:1:k    
    
   if (a(kk)=="/begin DEF_CHARACTERISTIC")
        mm=kk;
        index_number(kk)=mm;
    end
         
    
end
    index_number_anew=find(index_number_a);
    index_number_new=find(index_number);




num=length(index_number_anew);


for pp=1:1:num
    t=index_number_anew(pp);
    r=index_number_new(pp);
    temp=r-t;
  for counter=(t+1):1:(r-1)
      temp1=strfind(a(counter),'"');
      temp2=strcmp(a(counter),"");
      
      if (~isempty(a(counter)) && isempty(temp1)&&(temp2==0))
          FunctionNaming(counter)=a(counter);
      
      end
      if (~isempty(a(counter)) && ~isempty(temp1)&&(temp2==0))
          FunctionDescription1(counter)=a(counter);
      end
      
  end
  
  
  
 
        
 end

 
 

Could you offer a suggestion to read a2l file on matlab I will be appreciate to you.

Answer 1

[Shivam Sardana]

You can use xcpA2L function to read A2L file. You can refer to the link for the documentation of A2L File Management: https://www.mathworks.com/help/vnt/a2l-file-management.html

[ganesh dutt]

Hello Shivam, I am trying to Parse the A2l file in Matlab using xcpA2L function but I am getting error like " Reference to non-existent field 'ROOT'". Please answer my query so that I can move forward with my work.

[Seigan]

@Shivam Sardana, @ganesh dutt :

Hi, I have the same issue as ganesh. xcpA2L fails and returns " Reference to non-existent field 'ROOT' ".

I'm using MATLAB 2020b.

Any guidance please?

EDIT : it works fine on 2022b ! 🎉

Answer 2

[ilker ozturk]

Hi Shivam,

Actually I have checked xcpA2L function on Matlab, Unfortunately, this function does not provide the function relationships. I have to read which function have which charactesristics. If you know how can I get this info from xcpA2L function, please write me becauce I could not get any clue according to my problem.

Have a good weekend.

Ilker