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#include <ctime>
#include <iomanip>
#include <tb/crow_tb.h>
#include <cstdlib>
#include <unistd.h>
#include <chrono>
#include <waveguide.h>
#include <directional_coupler.h>
#include <probe.h>
#include <crow.h>
#include <specs.h>
#include "time_monitor.h"
#include "general_utils.h"
using namespace std;
using namespace std::chrono;
/* ----------------------------------------------------------------------------- *
This testbench is called freqsweep because it is capable of this
type of simulation, but it is also possible to set it as a time-domain
simulation depending on the mode chosen when calling SPECS. Example:
specs -t ac_add_drop -m fd -> will perform the frequency sweep
specs -t ac_add_drop -m td -> will perform the time domain simulation
/ ----------------------------------------------------------------------------- */
// ---------------- Use this variable to change the size of the CROW -----------
size_t nrings_crow = 3;
// -----------------------------------------------------------------------------
void crow_tb::run_td()
{
bool verbose = true;
if (specsGlobalConfig.simulation_mode == OpticalOutputPortMode::TIME_DOMAIN)
{
int npulses = 4;
double lambda = 1554.3719e-9;
lambda = 1.561931948453715e-6;
lambda = 1538.3277504e-9;
lambda = 1543e-9;
lambda = 1556.5742279e-9;
lambda = 1556.32782563158025368466e-9;
lambda = 1556e-9;
lambda = 1553e-9;
//lambda = 1550e-9;
double tpulse = 1e-9;
double deadtime = tpulse;
// Wait one tick that all sc_threads are started and on their first `wait` call
wait(SC_ZERO_TIME);
if (verbose)
{
cout << "----------------------------" <<endl;
cout << "Starting time-domain simulation" << endl;
}
for (int i = 0; i < npulses; ++i)
{
IN->write(OpticalSignal(1, lambda));
wait(tpulse, SC_SEC);
// //ADD.write(OpticalSignal(polar<double>(1, M_PI_2), lambda));
// //ADD.write(OpticalSignal(polar<double>(0,0), lambda));
IN->write(OpticalSignal(0, lambda));
// ADD.write(OpticalSignal(0, lambda));
wait(deadtime, SC_SEC);
}
}
while (true) { wait(); }
}
void crow_tb::run_fd()
{
bool verbose = true;
if (specsGlobalConfig.simulation_mode == OpticalOutputPortMode::FREQUENCY_DOMAIN)
{
auto lambda_center = 1550e-9;
auto lambda_span = 2e-9;
auto dlambda = 0.001e-9;
auto lambda_min = lambda_center - lambda_span/2;
auto lambda_max = lambda_center + lambda_span/2;
// lambda_min = 1545e-9;
// lambda_max = 1569e-9;
lambda_min = 299792458.0/195e12;
lambda_max = 299792458.0/190e12;
lambda_min = 1556e-9;
lambda_span = lambda_max - lambda_min;
dlambda = lambda_span / 10000;
// Wait one tick that all sc_threads are started and on their first `wait` call
wait(SC_ZERO_TIME);
//wait(lambda_min, SC_SEC);
auto tic = high_resolution_clock::now();
auto toc = high_resolution_clock::now();
if (verbose)
{
cout << "----------------------------" <<endl;
cout << "Starting sweep" << endl;
}
int i = 0;
int n = ceil(lambda_span / dlambda);
for (auto lambda = lambda_min; lambda < lambda_max + dlambda; lambda += dlambda)
{
++i;
if (true || (verbose && i % (int)(n/20) == 0))
{
toc = high_resolution_clock::now();
auto duration = duration_cast<microseconds>(toc - tic);
tic = toc;
cout << duration.count()/1000.0 << "ms" << endl;
cout << endl;
cout << fixed << setprecision(1) << (lambda-lambda_min)/lambda_span * 100.0 << "%" << endl;
cout << setprecision(20) << lambda * 1e9 << "nm" << endl;
}
IN->write(OpticalSignal(sqrt(1), lambda));
ADD->write(OpticalSignal(0, lambda));
//ADD.write(OpticalSignal(polar<double>(0, 0), lambda));
//ADD.write(OpticalSignal(polar<double>(sqrt(0.5), -M_PI_2), lambda));
wait(dlambda, SC_SEC);
}
if (verbose)
{
cout << "----------------------------" <<endl;
cout << "Sweep over (" << n << " points)" << endl;
}
}
while (true) { wait(); }
}
void crow_tb::monitor()
{
unsigned long long event_counter = 0;
while(true)
{
wait();
continue;
event_counter++;
std::cout << sc_time_stamp() << ":" << std::endl
<< "\tIN: " << IN->read() << std::endl
<< "\tADD: " << ADD->read() << std::endl
<< "\tTHROUGH: " << THROUGH->read() << std::endl
<< "\tDROP: " << DROP->read() << std::endl
<< "\tCOUNT: " << event_counter << std::endl;
}
}
void crow_tb_run()
{
specsGlobalConfig.applyEngineResolution();
spx::oa_signal_type IN("IN"), THROUGH("THROUGH"), DROP("DROP"), ADD("ADD");
crow_tb tb1("tb1");
tb1.IN(IN);
tb1.ADD(ADD);
tb1.THROUGH(THROUGH);
tb1.DROP(DROP);
// pid_t pid = fork();
CROW *pc;
// if(pid)
pc = new CROW("crow", nrings_crow);
// else
// pc = new Crow("crow", 5);
pc->p_in(IN);
pc->p_add(ADD);
pc->p_out_t(THROUGH);
pc->p_out_d(DROP);
pc->setRingLength(2*30e-6);
pc->m_loss_db_cm = 2.0;
pc->m_coupling_through = 1 - pow(0.83645, 2.0);
// pc->m_coupling_through = 0.5;
pc->m_neff = 2.6391;
pc->m_ng = 4.3416;
pc->m_ring_length = 500.0*1.55e-6 + 1.55e-6/2.0;
pc->m_loss_db_cm = 2.0;
pc->m_coupling_through = 1 - 0.2;
pc->m_neff = 1;
pc->m_ng = 2;
pc->init(); //instantiating all nets
Probe pthrough("pthrough", true, true, false, true);
pthrough.p_in(THROUGH);
//
Probe pcross("pcross", true, true, false, false);
pcross.p_in(DROP);
specsGlobalConfig.trace_filename = "traces/crow_tb";
// Apply SPECS options specific to the testbench
// specsGlobalConfig.simulation_mode = OpticalOutputPortMode::EVENT_DRIVEN;
specsGlobalConfig.trace_all_optical_nets = 0;
// Run SPECS pre-simulation code
specsGlobalConfig.prepareSimulation();
// Start simulation
sc_start(50e-9, SC_SEC);
std::cout << std::endl << std::endl;
std::cout << ".vcd trace file: " << specsGlobalConfig.trace_filename << std::endl;
sc_close_vcd_trace_file(specsGlobalConfig.default_trace_file);
}
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