Maestro 100 2G Series, Quick Start Manual & User Manual, Page: 27 / 31

6.3 Analog input port
/!\ Important notice:
This section concern only OpenAT developer that will need to control ADC from
their application, else the Maestro SmartPack will control analog input through SmartPack AT commands.
This port can be used either as a voltage input (0-5V range) or as a current input (0-20mA range).
– To setup the port as a voltage input, issue the commands: AT+WIOM=1,"GPIO19",1 then AT+WIOW="GPIO19",0 .
– For a current input, issue: AT+WIOM=1,"GPIO19",1 then AT+WIOW="GPIO19",1 .
To read the value of the input, use the command AT+ADC? . More information can be found in the AT commands
guide document.
6.4 RS232 auto-online mode (power saving)
When on auto-online mode, the RS232 transceiver will shut down most of its hardware, to save power, if it does not
detect a valid input for more than 100
µs .
The RS232 transceiver will wake up when valid input is detected again.
By default, auto-online mode is not active. To activate it, issue
AT+WIOM=1,”GPIO22”,1,0
followed by
AT+WIOM=4
.
This setting needs to be set once, and will be saved in memory.
Confidential, the whole document is the sole property of Maestro Wireless Solutions ltd.
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