This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
1，delay文件夹：存放延时相关的驱动代码。
2，sys文件夹：存放系统相关驱动代码。
3，uart文件夹：存放串口相关代码。
4，rt-thread:https://zhuanlan.zhihu.com/p/653746487?utm_campaign=shareopn&utm_medium=social&utm_psn=1827650748781039617&utm_source=wechat_session