SIL Environment Setup & Configuration

% Configure Embedded Coder SiL mode for SpeedController
model = "SpeedController";

% Method 1: Top-model SiL (simplest)
set_param(model, "SimulationMode", "software-in-the-loop (sil)");
% sim() will now compile and run generated code

% Method 2: Model Reference SiL (for component testing)
% In parent model, set the Model block to SiL mode:
set_param("VehicleEMS/SpeedController_Ref",
    "SimulationMode", "Software-in-the-loop (SIL)");

% Verify SiL compilation succeeds before running tests
[~, buildInfo] = slbuild(model, "ModelReferenceCoderTarget");
fprintf("SiL binary: %s\n", buildInfo.BuildDirectory);

% Run SiL simulation
set_param(model, "SimulationMode", "software-in-the-loop (sil)");
sil_out = sim(model, 20.0);

% SiL automatically logs code coverage (via gcov)
% View: Coverage Reports in Code Generation Report

/* Standalone SiL wrapper: exposes step function via C API */
#include "SpeedController.h"
#include "SpeedController_private.h"

/* Global state (matches Embedded Coder rtModel structure) */
static RT_MODEL_SpeedController_T SpeedController_M_;
static RT_MODEL_SpeedController_T *const SpeedController_M
    = &SpeedController_M_;

/* Test API: exposed via shared library */
void SiL_Init(void) {
    SpeedController_initialize();
}

void SiL_SetSpeedRef(float value) {
    SpeedController_U.SpeedRef = value;
}

void SiL_SetVehicleSpeed(float value) {
    SpeedController_U.VehicleSpeed = value;
}

void SiL_Step(void) {
    SpeedController_step();
}

float SiL_GetPedalRequest(void) {
    return SpeedController_Y.PedalRequest;
}

uint8_t SiL_GetFaultActive(void) {
    return (uint8_t)SpeedController_Y.FaultActive;
}