NVBoard项目搭建

ysyx · 02-16 · 935 人浏览

在刚接触NVBoard时感到非常棘手，因为不知道怎么配置引脚，也不知道怎么在cpp文件中接入nvboard，后来想到了阅读example项目的makefile，尝试模仿example的项目结构搭建，最后算是顺利完成了~

Step 0

配置环境，具体见README

Step 1

创建项目框架

.
├── constr
│   └── top.nxdc
├── csrc
│   └── nvb.cpp
├── makefile
└── vsrc
    ├── MuxKeyInternal.v
    ├── MuxKey.v
    ├── MuxKeyWithDefault.v
    └── top.v

共3个目录(constr, csrc, vsrc)，1个makefile文件

makefile文件我是直接复制的官方仓库/example/Makefile

Step 2

编写好.cpp文件，其实就是根据手册上说的：

在进入verilator仿真的循环前，先对引脚进行绑定，然后对NVBoard进行初始化
在verilator仿真的循环中更新NVBoard各组件的状态
退出verilator仿真的循环后，销毁NVBoard的相关资源

2.17 Update:

main.cpp其实只要有如下框架即可，不需要自己写激励了，因为修改NVBoard FPGA板的输入（比如拨动SW）就是一种激励。

#include <nvboard.h>
#include <Vtop.h>

void nvboard_bind_all_pins(Vtop* top);

int main(int argc, char** argv) {
    VerilatedContext* contextp = new VerilatedContext;
    contextp->commandArgs(argc, argv);
    Vtop* top = new Vtop{contextp};

    nvboard_bind_all_pins(top);
    nvboard_init();
    while(!contextp->gotFinish())
        {
            top->eval();
            nvboard_update();
        }

    nvboard_quit();
    return 0;
}

Note: 绑定多个引脚时，从左到右是MSB->LSB

Step 3

在项目根目录下执行

make run

Summary

以后要养成习惯，不知道怎么下手时先看示例是怎么写的，模仿着来就可以，同时要阅读示例的README

FrankAnymn 8 天前

回复

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