更新 uart_main

Review Request #3374 — Created Nov. 26, 2021 and discarded — Latest diff uploaded

Information
wanghongwei
Yc3121
Reviewers
taoqiwen, wushengyan 
新增清中断标志说明，Rx 自动清除，Tx 需要软件清除




 













 

 










   

    
    

    

    

    

    

   

  

 















     

    

   

  

  

   
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