yc_timer.c文件毫秒、微妙函数更新

Review Request #207 — Created Feb. 11, 2020 and submitted — Latest diff uploaded

Information
wangjingfan
Yc3121
Reviewers
taoqiwen, wushengyan 
1.将ms、us函数更新为调用rom，避免加载flash导致延时不准




 













 

 










   

    
    

    

    

    

    

   

  

 















     

    

   

  

  

   
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