Code Architecture

Before investigating the specific code generation pieces of the Target Language Compiler (TLC), consider how Target Language Compiler generates code for a simple model. From the next figure, you see that blocks place code into Mdl routines. This shows MdlOutputs.

static void simple_output(int_T tid)
{

  /* Sin Block: '<Root>/Sine Wave' */

  simple_B.SineWave_d = simple_P.SineWave_Amp *
    sin(simple_P.SineWave_Freq * simple_M->Timing.t[0] +
    simple_P.SineWave_Phase) + simple_P.SineWave_Bias;

  /* Gain: '<Root>/Gain' */
  simple_B.Gain_d = simple_B.SineWave_d * simple_P.Gain_Gain;

  /* Outport: '<Root>/Out1' */
  simple_Y.Out1 = simple_B.Gain_d;
}

Blocks have inputs, outputs, parameters, states, plus other general properties. For example, block inputs and outputs are generally written to a block I/O structure (generated with identifiers of the type model_B), where model is the model name). Block inputs can also come from the external input structure (model_U) or the state structure when connected to a state port of an integrator (model_X), or ground (rtGround) if unconnected or grounded. Block outputs can also go to the external output structure, (model_Y). The following diagram shows the general block data mappings.

This discussion should give you a general sense of what the block object looks like. Now, you can look at specific pieces of the code generation process that are specific to the Target Language Compiler.

Getting Started

Target Language Compiler Overview

© 1984-2012- The MathWorks, Inc.    -   Site Help   -   Patents   -   Trademarks   -   Privacy Policy   -   Preventing Piracy   -   RSS