User guide

Redpine Signals, Inc. Proprietary and Confidential. Page 15
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In case of failure of this exchange, the module gets configured with the default
baud rate of 115200 bps after a maximum of 18 secs.
3.2 Module Operation in UART Mode
The Wi-Fi AT command set represents the control frames that are sent from the
Host to the RS9110-N-11-2X module to set or get the values of various control
parameters. The command set resembles the standard AT command interface
used for modems.
AT commands start with “AT” and are terminated with a carriage return and a
new line character.
The AT command set for the RS9110-N-11-2X module starts with “at+rsi_”
followed by the name of the control parameter. The control parameter is
followed by either „?‟ or „=‟ or NULL. If the character following the control
parameter is a „?‟ the value of the control parameter is retrieved. If the character
following the control parameter is „=‟ the subsequent value is set to the control
parameter. If a command requires no parameters then the control parameter is
NULL (no parameters).
The following is an example command for sending the INIT command:
at+rsi_init\r\n
OK\r\n
“OK” is the success response to the command. The following are the RS9110-N-
11-2X module‟s Wi-Fi configuration AT commands.
NOTE: All commands are issued from Host to module as a sequence of
ASCII characters. All return messages from module to Host consist of OK or
ERROR strings, returned in ASCII. ERROR is accompanied by <Error code>
returned in two‟s complement format.
3.2.1 Band
Description
This is the first command that needs to be sent from the Host. This command
configures the band in which the module has to be configured.
Command
at+rsi_band
Usage
at+rsi_band=band_val
1
\r\n
1
All AT commands are sent as a sequence of ASCII characters. The termination
characters after every command and response are „\r\n‟ which is 0x0D, 0x0A