{%hackmd @themes/dracula %}

NOTE: Enable Linux Serial Console
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Overview:
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在Single-Board/伺服器MB進行開發/測試時, 不一定都具備影像(VGA)輸出, 這時就透過console port進行指令的輸入, 並監控系統輸出

Do configuration on /etc/default/grub
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command: `sudo vim /etc/default/grub`
原始的設定如下:

在`GRUB_CMDLINE_LINUX=""`中加入console輸出, 經由ttyS0, Baud值為115200

Upadte grub
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command: `sudo update-grub`

完成後, 重啟即可

Ref.
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https://zhuanlan.zhihu.com/p/447014333
https://www.linusakesson.net/programming/tty/index.php
https://blog.csdn.net/weixin_43863487/article/details/107951863