Manual of Board ET-BASE GSM SIM900
9.4
How to Enable/Disable Echo
Echo is the return of a transmitted command to its source when
user typed commands on Program Terminal to notify user to know
what the typed and transmitted command is (normally, it is
Default value). If user would like to disable this function, it
uses Command
ATE0&W
and follows by
Enter
; when user types the
command, user does not see it on Program Terminal because it
only displays the response from Module SIM900. If user would
like to enable this function, it only uses the Command
ATE1&W
and follows by
Enter
.
10. How to Setup and Check Configuration
Normally, there are several ways to setup Configuration of
Module SIM900 such as conditions of communicating with Module;
moreover, user can change and edit values as required such as Baud
rate or format of Handshakes for communication. Remember, it is
necessary to setup Configuration of the Module to suit user’s needs.
Normally, these conditions always have a fixed value after resetting
or Power ON; the Module sets conditions for its own when it starts
running by the values that are setup and saved in Configuration.
However, user can change and edit this Configuration as required.
There are 2 ways to setup conditions of the Module as described
below;
•
Permanently Setup
: It saves conditions of Module according to
the setting format in the permanent memory internal Module by
Command
AT&W
. After Module starts running or after reset Module
in each time, the conditions of the Module always are set
according to the saved values in Configuration.
•
Temporarily Setup
: It uses AT Commands to setup condition for
running Module but is does not save any Configuration by the
Command
AT&W
; so, the operation of Module also changes and
varies according to the current command. When reset the Module
or Power ON, the specification of Module also return to the old
one instantly.
It can use AT Command to check and save Configurations into Module
SIM900 as follows;
•
It uses Command
AT&V
to command the Module to show the current
Configuration.
•
It uses Command
AT&F
to reset all Configurations to be standard
value.
•
It uses Command
AT&W
; it saves the current Configurations that
are setup by user.
Suggested Configuration
•
AT+CMGF=1
(SMS Message = Text Mode)
•
ATE=1
(Echo Mode ON)
•
AT+CSCLK=0
(Disable Sleep Mode)
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