Target Language Compiler

model.rtw Changes Between
Real-Time Workshop 5.0 and 4.1

This release consists of significant alterations to the model.rtw file.

The primary changes are:

• The number of System records has been reduced to M, where M <= N, and N is the number of actual systems in the model. This is the direct result of the code reuse capabilities introduced in Real-Time Workshop 5.0.
• The Prototype record in the System record was renamed to Interface to better reflect what it represents. In addition, many fields within the Interface record were added and others had name improvements.
• DataTypes.SLName was renamed to DataTypes.DTName to reflect that this is not a remapped Simulink name (SLName) due to special characters.
• The DataStores record was removed and this information has been incorporated into the DWorks record.
• Separate procedures, optionally in separate files, are always generated for systems that are not inlined. The generated code format for each system is based on the RTW system code setting in its associated subsystem block property dialog. Choices are:
• Auto -- Generate a reusable function if there is more than one reference to the system, and are structurally identical. If this is not possible, inline it.
• Inline -- Always inline the system (never reuse it).
• Reusable function -- Always generate a function for the system regardless of how many references exist to the system. This function includes arguments that are passed.
• Function -- Always generate a (non-reusable) function for the system regardless of how many references exist to the system. Such functions access the generated code global data structures, rtB, rtX, etc., and do not have arguments.
• - The following Real-Time Workshop data structures have been reworked to all become hierarchical based on the model system hierarchy.
  
  

  Category	Data Structures Affected
  BlockOutputs	rtB
  Parameters	rtP (inline parameters off only)
  ContStates	rtX, rtXdot, rtXdis (Note: ssGetdX(), ssGetContStateDisabled() were removed from direct reference)
  DWorks	rtDWork
  NonsampledZC	rtZC, rtZCdir
  PrevZCSigStates	rtPZCE (previous zero crossing event state); was rtPrevZCSigState

• When Inline Parameters are on, we generate
• rtP : A flat structure containing the 'auto' tunable variables.
• rtCP_name : Individual variables for the #define/const parameters (just like rtC).
• The rtC structure has been eliminated and replaced with individual references to the constant elements directly in the files corresponding to the systems that reference the invariant signals. Now, #define and const block I/O elements are handled in same manner.
• External inputs and outputs (rtU, rtY) are now created as flat structures.
• Removed ChildSystemIndices and ChildSystemBlockIndices. These have been replaced by ChildSystems within the scope of System records.

Inline Parameters On Code Structure

General Information and Solver Specification