MATLAB: Isn’t Real-Time Workshop 5.0.1 (R13+) generating comments in the generated code for all of the blocks

commentgeneratereal timertwsee;simulink coderworkshop

I tried to put some descriptions regarding an Inport block and an Outport block under the "Block Properties …". When I generate code, the descriptions for the Outport block are copied to the generated code as comments. However, it does not happen for the Inport block.

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This enhancement has been incorporated in Release 14 Service Pack 3 (R14SP3). For previous product releases, there are no workarounds.

Related Solutions

MATLAB: Is it possible to inline Model Reference blocks in the generated code in Real-Time Workshop 7.4 (R2009b)

The ability to inline code generated for Model Reference blocks is currently not available in Real-Time Workshop 7.4 (R2009b).

As a workaround, use atomic/ configurable subsystems instead; although these blocks do not support variants.

MATLAB: Does the generated code incorporate inefficient bit shifting operations in Real-Time Workshop Embedded Coder 5.0.1 (R2007b+)

The generated code is not incorrect. Notice the following comments in the generated code:

    96       /* Outport: '<Root>/Out 1' incorporates:
    97        *  Gain: '<Root>/Gain 1'
    98        *  Gain: '<Root>/Gain 2'
    99        *  Gain: '<Root>/Gain 5'
   100        *  Gain: '<Root>/Gain 6'
   101        *  Inport: '<Root>/In 1'
   102        *  SignalConversion: '<Root>/TmpHiddenBufferAtGain 1Inport1'
   103        */
   104       mux_to_array_Y.Out1 = (int16_T)((((mux_to_array_U.In1 << 2U) << 14) >> 13) *
   105         3);

Each gain is an operation y = fn(u). These functions are being folded to make one line of code equivalent to

y = f1(f2(f3(f4(u))))

Hence the reason for the behavior observed. Most likely, the shift operations will be optimized in the C compiler anyway.

This expression folding of gains has, however, been enhanced in R2008a. So in R2008a and later releases, the generated code appears as follows:

 mux_to_array_Y.Out1 = (int16_T)((mux_to_array_U.In1 << 3U) * 3);

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Related Solutions

MATLAB: Is it possible to inline Model Reference blocks in the generated code in Real-Time Workshop 7.4 (R2009b)

MATLAB: Does the generated code incorporate inefficient bit shifting operations in Real-Time Workshop Embedded Coder 5.0.1 (R2007b+)

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