how can I array the external inputs for code generation in Simulink embedded coder?

Question

I am building the c-code of a Subsystem in Simulink with the embedded coder. The created header file includes the following code-snippet which represents the 6 inports and 2 outports of the subsystem.

/* External inputs (root inport signals with default storage) */
typedef struct {
  real_T V_dc_abs_B;                   /* '<Root>/V_dc_abs_B' */
  real_T CM_B;                         /* '<Root>/CM_B' */
  real_T GMEAS_A;                      /* '<Root>/GMEAS_A' */
  real_T GMEAS_B;                      /* '<Root>/GMEAS_B' */
  real_T V_dc_abs_A;                   /* '<Root>/V_dc_abs_A' */
  real_T CM_A;                         /* '<Root>/CM_A' */
} ExtU_Regelung_T;

/* External outputs (root outports fed by signals with default storage) */
typedef struct {
  real_T AO_A;                         /* '<Root>/AO_A' */
  real_T AO_B;                         /* '<Root>/AO_B' */
} ExtY_Regelung_T;

I also got an example code of a different simulink model which I'm following (I don't have the actual model, only the code). In their code, the external inputs and outputs code-snippet look like this:

/* External inputs (root inport signals with default storage) */
typedef struct {
  real_T INPUTS[24];                   /* '<Root>/INPUTS' */
} ExtU_WindExample_T;

/* External outputs (root outports fed by signals with default storage) */
typedef struct {
  real_T OUTPUTS[21];                  /* '<Root>/OUTPUTS' */
} ExtY_WindExample_T;

I would like to change my simulink model in a way that the embedded coder generates my external inputs and outputs the same way as in the example - as an array. I have no idea which blocks to use for this problem and would much appreciate any help. I already tried to use bus creator and selector, but it didn't give me the desired result.

WamboRambo · Accepted Answer · 2025-03-05 13:40:19Z

0

I figured it out - you have to use a Mux/Demux Block. This way, the embedded coder creates an array of the inputs and outputs, respectively:

/* External inputs (root inport signals with default storage) */
typedef struct {
  real_T INPUTS[6];                    /* '<Root>/Inport' */
} ExtU_Regelung_T;

answered Mar 5 at 13:40

WamboRambo

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