Verilator生成仿真波形文件

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基本步骤

代码模板

  • 顶层CPP模板
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    #include <stdio.h>
    #include <stdlib.h>
    #include "verilated_vcd_c.h"
    #include <Vtop.h>

    int main(int argc, char **argv, char **env)
    {
        // Prevent unused variables
        if (false && argc && argv && env) {}
        
        const std::unique_ptr<VerilatedContext> contextp{new VerilatedContext};

        // Module
        Vtop *top = new Vtop;

        Verilated::traceEverOn(true);
        VerilatedVcdC* tfp = new VerilatedVcdC;
        top->trace(tfp, 0); 
        tfp->open("simx.vcd");

        while (contextp->time() < 20 && !contextp->gotFinish())
        { 
        // simulation code 
        ……

        contextp->timeInc(1);
        
        top->eval();

        tfp->dump(contextp->time());
        }

        top->final();
        tfp->close();
        delete top;

        return 0;
    }

执行

  • command

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    # trace generate a wave file
    verilator -Wall top.v sam.cpp --cc --trace --exe  --build
    # compiles
    make -C obj_dir -f Vtop.mk Vtop
    # run
    ./obj_dir/Vtop

  • files

  • wave

总结

待更新…………