Get state / Set Serial Communication
Input
[ESP900]<state> json=<no> pwd=<admin password>
- 
json=no the output format can be in JSON or plain text 
- 
state 
- if state is empty, it will display current state
- 
if state is not empty, it will set the state currently only these states are supported: - ENABLE
- DISABLE
 
- 
pwd= the admin password if authentication is enabled 
Output
- In json format
- cmdId of requested command, should be- 900
- statusstatus of command, should be- ok
- datacontent of response, here the current state
-Text
