mainly update some supports on-chip peripheral driver about stm32f413-st-nucleo board#3724

Merged

BernardXiong merged 3 commits intoRT-Thread:masterfrom

XYX12306:master

Jul 8, 2020

Commits on Jun 7, 2020

update README.md and main.c file
XYX12306
committed
fixed the serious bug caused by the main function calling the key processing function and the system running error
XYX12306
committed

Commits on Jun 27, 2020

convert the tab key of some files to four spaces
XYX12306
committed