templates/fpga/simulation/test_led.cpp

57 lines
1.1 KiB
C++
Raw Permalink Normal View History

2024-03-16 23:41:51 +01:00
#include "Vtop.h"
#include "verilated.h"
#include <stdint.h>
#include <iostream>
#include <random>
#include "verilated_vcd_c.h"
struct state {
VerilatedContext *ctx;
Vtop *vtop;
VerilatedVcdC *trace;
};
void posedge(state &state) {
state.ctx->timeInc(1);
state.vtop->clk_12m = 1;
state.vtop->eval();
state.trace->dump(state.ctx->time());
state.ctx->timeInc(1);
state.vtop->clk_12m = 0;
state.vtop->eval();
state.trace->dump(state.ctx->time());
}
int main(int argc, char **argv) {
VerilatedContext *vctx = new VerilatedContext;
Verilated::traceEverOn(true);
Vtop *vtop = new Vtop(vctx);
if (argc != 2) {
std::cout << "Run with argument for destination!" << std::endl;
return 1;
}
VerilatedVcdC *trace = new VerilatedVcdC;
vtop->trace(trace, 99);
trace->open(argv[1]);
std::cout << "(writing trace to " << argv[1] << ")" << std::endl;
state state = {
.ctx = vctx,
.vtop = vtop,
.trace = trace,
};
for (int i = 0; i < 2<<24; i++) {
posedge(state);
}
state.trace->close();
}