Get ESP3D pins definition
Input
[ESP220] json=<no> pwd=<admin password>
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json=no the output format can be in JSON or plain text 
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pwd= the admin password if authentication is enabled 
Output
- 
In json format 
- 
cmdId of requested command, should be220
- statusstatus of command, should be- ok
- 
datacontent of response, here the pins definitions
- 
plain text format 
