- 更新了代码后再做编译操作，
```
make: Leaving directory '/home/xh/wisdtour/firefly-sdk/buildroot'
you need to install 'unbuffer' (from package expect or expect-dev)
log saved on /home/xh/wisdtour/firefly-sdk/br.log
tail: 无法打开'/home/xh/wisdtour/firefly-sdk/br.log' 读取数据: 没有那个文件或目录
Command exited with non-zero status 1
you take 0:01.49 to build builroot
====Build buildroot failed!====
```
根据提示，编译 buildroot 前要安装 expect or expect-dev
可以不编译buildroot，按照部分编译操作或者更新代码
- maskrom，板子应该进入maskrom了，检测下接线问题，或者换个工具版本；
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