I receive the error in the title when I simulate my supercapacitor class with systemC. More precisely, the whole error message is as follows:
Warning: SystemC-AMS: Initialization for tracing of: v_supercap failed set wave to 0
In file: ../../../../../../src/scams/impl/util/tracing/sca_trace_object_data.cpp:174 In process: sca_implementation_0.cluster_process_0 @ 0 s
Warning: SystemC-AMS: Initialization for tracing of: e_supercap failed set wave to 0
In file: ../../../../../../src/scams/impl/util/tracing/sca_trace_object_data.cpp:174 In process: sca_implementation_0.cluster_process_0 @ 0 s
Warning: SystemC-AMS: Initialization for tracing of: soc_supercap failed set wave to 0
In file: ../../../../../../src/scams/impl/util/tracing/sca_trace_object_data.cpp:174 In process: sca_implementation_0.cluster_process_0 @ 0 s
My supercapacitor class consists of a parent class, supercap that instantiates and connects the two child classes, supercap_tdf and supercap_eln . The problem only occurs when I use the supercap class, when I use only the supercap_eln alone I do not get this error. For this reason, I think the problem is related to the other two classes but I couldn't figure out what causes it.
This is not the behaviour I expect as there is a current flowing to the input of the supercapacitor (proven when I use the supercap_eln alone). I would expect the supercap class to output relevant v_supercap, e_supercap, soc_supercap not only 0s at the beginning and then nothing.
I have included the files for the classes mentioned above for reference.
=========================================================================
supercap_eln.h
#ifndef SUPERCAP_ELN_H
#define SUPERCAP_ELN_H
#include <systemc-ams.h>
SC_MODULE(supercap_eln)
{
public:
// Interface and internal components declaration
sca_tdf::sca_in<double> pI_in; // Requested supercapacitor current
sca_tdf::sca_out<double> pV_out; // Provided supercapacitor voltage
// transformers bw ELN and TDF
sca_eln::sca_tdf::sca_isource iin;
sca_eln::sca_tdf::sca_vsink vout;
// ELN components
sca_eln::sca_c C_sc; // Capacitance (for supercap)
sca_eln::sca_r R_l; // Leakage resistance
sca_eln::sca_r R_s; // Series resistance
// Constructor
supercap_eln( sc_core::sc_module_name nm, double c_par, double r_l_par, double r_s_par):
pI_in("pI_in"),
pV_out("pV_out"),
iin("iin"),
vout("vout"),
C_sc("C_sc", c_par),
R_l("R_l", r_l_par),
R_s("R_s", r_s_par),
node_top("node_top"),
node_mid("node_mid"),
gnd("gnd")
{
iin.inp(pI_in);
iin.p(node_top);
iin.n(gnd);
vout.p(node_top);
vout.n(gnd);
vout.outp(pV_out);
C_sc.p(node_top);
C_sc.n(node_mid);
R_l.p(node_top);
R_l.n(node_mid);
R_s.p(node_mid);
R_s.n(gnd);
cout << "Supercapacitor created, C:" << C_sc.value << ", R_l:" << R_l.value << ", R_s:" << R_s.value << endl;
}
private:
// internal node and ref node
sca_eln::sca_node node_top, node_mid;
sca_eln::sca_node_ref gnd;
};
#endif
supercap_tdf.h:
#ifndef SUPERCAP_TDF_H
#define SUPERCAP_TDF_H
#include <systemc-ams.h>
#include "config.h"
SC_MODULE(supercap_tdf)
{
public:
// Ports
sca_tdf::sca_in<double> pV_in; //incoming voltage
sca_tdf::sca_out<double> pV_out; //forwarded voltage
sca_tdf::sca_out<double> pE_out; //current energy
sca_tdf::sca_out<double> pSoC_out; //state of charge
supercap_tdf( sc_core::sc_module_name nm, double c_par):
pV_in("pV_in"),
pV_out("pV_out"),
pE_out("pE_out"),
pSoC_out("pSoC_out"),
C(c_par),
MAX_E(0.5 * C * VREF_BUS * VREF_BUS),
SoC_val(SOC_INIT),
E_val(SoC_val * MAX_E)
{
cout << "Supercapacitor TDF created, C:"<< C << ", MAX_E:" << MAX_E << ", SoC:" << SoC_val << ", E:" << E_val << endl;
}
void set_attributes();
void initialize();
void processing();
private:
const double C;
const double MAX_E;
double SoC_val;
double E_val;
};
#endif
supercap_tdf.cpp
#include "supercap_tdf.h"
void supercap_tdf::set_attributes()
{
pE_out.set_timestep(SIM_STEP, sc_core::SC_SEC);
pSoC_out.set_timestep(SIM_STEP, sc_core::SC_SEC);
pV_out.set_timestep(SIM_STEP, sc_core::SC_SEC);
pE_out.set_delay(1);
pSoC_out.set_delay(1);
pV_out.set_delay(1);
}
void supercap_tdf::initialize(){}
void supercap_tdf::processing()
{
double tmp_v;
tmp_v = pV_in.read();
cout << "Voltage value: " << tmp_v << " @" << sc_time_stamp() << endl;
if(tmp_v <= 0)
{
cout << "ERROR: 0 or less voltage value" << " @" << sc_time_stamp() << "Value V=" << tmp_v << endl;
sc_stop();
}
if(tmp_v > VREF_BUS)
{
cout << "Voltage is greatar than VREF_BUS" << " @" << sc_time_stamp() << "Value V=" << tmp_v << endl;
tmp_v = VREF_BUS;
}
pV_out.write(tmp_v);
E_val = 0.5 * C * tmp_v * tmp_v;
pE_out.write(E_val);
SoC_val = E_val / MAX_E;
if(SoC_val <= 0.01)
{
cout << "SC SOC is less than or equal to 1%:" << " @" << sc_time_stamp() << endl;
sc_stop();
}
pSoC_out.write(SoC_val);
}
supercap.h:
#ifndef SUPERCAP_H
#define SUPERCAP_H
#include <systemc-ams.h>
#include "supercap_eln.h"
#include "supercap_tdf.h"
#include "config.h"
SC_MODULE(supercap)
{
public:
sca_tdf::sca_in<double> pI_in; // Battery current
sca_tdf::sca_out<double> pV_out; // Voltage
sca_tdf::sca_out<double> pE_out; // Energy
sca_tdf::sca_out<double> pSoC_out; // State of Charge
// connecting signals
sca_tdf::sca_signal<double> sVoltage;
supercap_eln eln_module;
supercap_tdf tdf_module;
supercap( sc_core::sc_module_name nm, double c_par = 3.0, double r_l_par = 500000.0, double r_s_par = 0.08):
pI_in("pI_in"),
pV_out("pV_out"),
pE_out("pE_out"),
pSoC_out("pSoC_out"),
eln_module("eln_module", c_par, r_l_par, r_s_par),
tdf_module("tdf_module", c_par)
{
eln_module.pI_in(pI_in);
eln_module.pV_out(sVoltage);
tdf_module.pV_in(sVoltage);
tdf_module.pV_out(pV_out);
tdf_module.pE_out(pE_out);
tdf_module.pSoC_out(pSoC_out);
}
};
#endif
SC_MODULE(supercap_tdf) {}
must be
SCA_TDF_MODULE(supercap_tdf)
for explanation see: