vco.h

新型的SystemC-AMS语言

#include "systemc-ams.h"

SCA_SDF_MODULE(vco) {

   sca_sdf_in<double>   in;
   sca_sdf_out<double>  out;
   
   double gain;   // gain
   double kvco;   // sensitivity [Hz/V]
   double fc;     // central frequency [Hz]
   double vfc;    // control voltage to get FC

   double wc;     // central pulsation [rad/s]
   double kvcor;  // sensitivity [rad/(s*V)
   bool debug_init;
   
   void init() {
      wc = 2.0*M_PI*fc;
      kvcor = 2.0*M_PI*kvco;
   }

   void sig_proc() {

      if (debug_init) {
         cout << name() << ": "
              << " gain = " << gain
              << " kvco = " << kvco
              << " fc = " << fc
              << " vfc = " << vfc
              << " wc = " << wc
              << " kvcor = " << kvcor
              << endl;
         debug_init = 0;
      }

      double tn = sc_time_stamp().to_seconds();
      double wvco = (wc + kvcor*(in.read() - vfc));
/*
      cout << name()
           << ": t = " << tn
           << " wvco = " << wvco
           << endl;
*/
      out.write(gain*sin(wvco*tn));
   }

   SCA_CTOR(vco) {
      debug_init = 1;
   }
};  // vco