新增3121打印机开聪代码路径

Review Request #2162 — Created Feb. 9, 2021 and submitted — Latest diff uploaded

Information
hechuanjiang
Yc3121
Reviewers
sunxiaohui, taoqiwen 
1,开启2Mbps ，增加时钟修改patch  2,增加4.2 DLE  3,区别对待4.0 和4.2传输数据




 













 

 










   

    
    

    

    

    

    

   

  

 















     

    

   

  

  

   
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