提示: 
1. Check whether board is connected to the system properly. 
2. In case of zynq board, check whether Digilent/Xilinx cable switch settings are correct. 
3. If you are using Xilinx Platform cable USB, ensure that status LED is green. 
 
 
    Failed to open Cable Node jsn1 on TCP:127.0.0.1:3121 
 
请教,谢谢. 
 
 
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