How to find data with specific data type.

In my code generation, my target hardware does not support double-precision float, so I want to scan my models for any doubles before generating code.

Here is an example entry from my model file of what I want to find (it is in a Stateflow chart):

data {
  id          203
  ssIdNumber        100
  name        "cntr"
  linkNode        [117 0 204]
  scope        FUNCTION_INPUT_DATA
  machine        1
  props {
    type {
  primitive    SF_DOUBLE_TYPE
  isSigned    1
  wordLength    "16"
    }
  }
  dataType        "double"
}

The following line of code does NOT work:

dataTypes = find_system(sys,'FindAll','on','LookUnderMasks','all','dataType','double');

Can anyone provide a script to find all such occurrences?

Answer 1

[Kaustubha Govind]

I think the safest way to check datatypes used in a model is to compile the model and check the compiled datatypes at the boundary of each block. You can do this for one block using something like:

vdp([],[],[],'compile');
d = get_param(gcb,'CompiledPortDataTypes');
vdp([],[],[],'term');

You will need to inspect 'd' to see if contains double.

(Note: if you need to disallow all floating-point types, you can simply uncheck Support: floating-point numbers in the Configuration Parameters window)

[Peter]

Unless I did this wrong, it returned an empty struct:

>> Kln_Cycle([],[],[],'compile');
>> d = get_param(gcb,'CompiledPortDataTypes');
>> Kln_Cycle([],[],[],'term');
>> d

d = 

0x0 struct array with fields:
    Inport
    Outport
    Enable
    Trigger
    State
    LConn
    RConn
    Ifaction

>> d.Inport
>> d.Outport
>> d.Enable
>> d.Trigger
>> d.State
>> d.LConn
>> d.RConn
>> d.Ifaction

[Kaustubha Govind]

"gcb" basically returns the path to a selected block. It looks like you may not have any block in your model selected? Alternatively, you can use a specific block's path:

   d = get_param('Kln_Cycle/In1','CompiledPortDataTypes');

[Peter]

Sorry, obviously gcb would only select one block. I just need to scan all blocks.

However, the doubles that are in my system are internal data definitions within Stateflow chart functions. How do you drill down to access those too? I have been trying all sorts of things, but can not seem to get to them.

[Kaustubha Govind]

I've used the Stateflow API in the past to look inside Stateflow objects, but I don't know what the exact commands to use in your case might be. Perhaps going through the documentation will give you some ideas.