YC3121 uart sdk 更新

Review Request #223 — Created Feb. 19, 2020 and submitted — Latest diff uploaded

Information
wangjingfan
Yc3121
Reviewers
taoqiwen, wushengyan 
1.添加UART_ReceiveDataLen函数，读取UART DMA待接收数据长度




 













 

 










   

    
    

    

    

    

    

   

  

 















     

    

   

  

  

   
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