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#pragma once
#include <vector>
#include <systemc.h>
#include <spx_module.h>
#include <optical_output_port.h>
#include <optical_signal.h>
#include "specs.h"
#include "spx_module.h"
class PCMElement : public spx_module {
public:
// Ports
spx::oa_port_in_type p_in;
spx::oa_port_out_type p_out;
// Timed ports writers
OpticalOutputPort m_out_writer;
// Auxiliary struct - stores tuples of value-time
typedef pair<double,double> pulse_sample_t;
// Member variables
double m_Tc = 0; /* Transmission (power) in initial (fully crystalline) state */
double m_Ta = 1; /* Transmission (power) in final (fully amorphous) state */
double m_meltEnergy; /* Programming threshold*/
int m_nStates; /* Total number of states */
double m_influence_time_ns = 1; /* Duration for which energy is maintained (hard threshold for representing thermal losses)*/
double m_speed = 3; /* Parameter affecting the transmission curve and how fast transmission saturates */
int m_stateCurrent = 0; /* Current state */
double m_Tcurrent = 0; /* Current transmission (power) */
double m_Tcurrent_field = 0; /* Current transmission (field) */
/** Current information about the optical input, before any attenuation and phase shift. */
double m_last_pulse_power = 0;
std::map<uint32_t,OpticalSignal::field_type> m_memory_in;
// Processes
void on_input_changed();
// Member functions
bool phase_change(const vector<pulse_sample_t> &vec, const bool &local);
void update_transmission_local();
// Constructor
PCMElement(sc_module_name name,
double meltEnergy = 0,
int nStates = 0,
int state = 0,
double Tc = 0,
double Ta = 0,
double influence_window_ns = 1,
double speed = 3)
: spx_module(name)
, m_out_writer("out_delayed_writer", p_out)
, m_Tc(Tc)
, m_Ta(Ta)
, m_meltEnergy(meltEnergy)
, m_nStates(nStates)
, m_influence_time_ns(influence_window_ns)
, m_speed(speed)
, m_stateCurrent(state)
{
SC_HAS_PROCESS(PCMElement);
SC_THREAD(on_input_changed);
sensitive << p_in;
}
};
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