Array of bytes to string

[Olofsson]

Hi !

I have a array of bytes that I would like to convert to a string in Control Expert. Each byte holds an ASCII code of a letter or a number. This seemingly basic operation has proven a bit more tricky than I expected. Actually, I have not found a solution I'm happy with.

On possible solution is to define a string with the same memory address as the array. However, the idea is to write a somewhat portable program unit and I would like to avoid direct memory addressing.

There have to be a correct and simple way to do this. Help would very much be appreciated !

[RaviNayak · Accepted solution]

@Olofsson  Please find the attached PDF for the information on the conversion,  hope this helps.

[Olofsson]

Thanks RaviNayak !

It's close enough, Not the most elegant code but it will do. For my 46 byte array bytes_recu I get.

  FOR i := 1 TO 23 DO
    int_recu[i] := BYTE_TO_INT(bytes_recu[i*2])+SHL(IN := BYTE_TO_INT(bytes_recu[i*2-1]), N := 8);
  END_FOR;

  string_recu := ASCII_TO_STRING (int_recu);

For something that should be a simple conversion it sure is a lot of operation for nothing.