Specifications

SIM900 AT Commands Set
SIM900_ATC_V1.01 152 23.06.2010
1 module is ready for phone call
Response
ME returns the status of result code presentation and an integer <n>
which shows whether the module is currently ready for phone call.
+CCALR: <mode>
OK
Read Command
AT+CCALR?
Parameter
<mode>
See Test Command
Reference Note
6.2.44 AT+GSV Display Product Identification Information
AT+GSV Display Product Identification Information
Execution
Command
AT+GSV
Response
TA issues product information text
Example:
SIMCOM_Ltd
SIMCOM_SIM900
Revision: 1137B01V01SIM900M32_ST
OK
Reference Note
6.2.45 AT+SGPIO Control the GPIO
AT+ SGPIO Control the GPIO
Test Command
AT+SGPIO=?
Response
+SGPIO: (0-1),(1-12),(0-2),(0-1)
OK
Response
OK
ERROR
Write Command
AT+SGPIO=<ope
ration>,<GPIO>,
<function>,<level
>
Parameters
<Operation> 0 set the GPIO function including setting the GPIO
output and setting the GPIO as the Keypad.
1 read the GPIO level. Please note that only when the
gpio is set as input, you can use parameter 1 to read