ticker(milli)

C++ implementation

struct State 
{
  TimeMs nextTrig;
};

{{ GENERATED_CODE }}

void evaluate(Context ctx) 
{
    State* state = getState(ctx);
 
    TimeMs tNow = transactionTime();
    TimeMs tms = getValue<input_Tms>(ctx);
    
    if (tms < 0) tms = 0;
    TimeMs tNext = tNow + tms;

    auto isEnabled = getValue<input_EN>(ctx);
    auto isRstDirty = isInputDirty<input_UPD>(ctx);

    if (isTimedOut(ctx) && isEnabled && !isRstDirty) 
    {
        emitValue<output_TICK>(ctx, 1);
        state->nextTrig = tNext;
        setTimeout(ctx, tms);
    }

    if (isRstDirty || isEnabled) 
    {
        // Handle enable/disable/reset
        if (!isEnabled) 
        {
            // Disable timeout loop on zero IVAL or explicit false on EN
            state->nextTrig = 0;
            clearTimeout(ctx);
        } 
        else if (state->nextTrig < tNow || state->nextTrig > tNext) 
        {
            // Start timeout from scratch
            state->nextTrig = tNext;
            setTimeout(ctx, tms);
        }
    }
}

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