参考链接：
https://mrexodia.github.io/reversing/2019/09/28/Analyzing-keyboard-firmware-part-1
https://mrexodia.github.io/reversing/2019/10/13/Analyzing-keyboard-firmware-part-2
https://mrexodia.github.io/reversing/2019/11/25/Not-analyzing-keyboard-firmware-part-3
