Manual of Board ET-BASE GSM SIM900
•
Register
•
About
2. If user requires checking balance, it has to choose the first
submenu that is “Check Balance”.
3. When Program Application of mobile phone acknowledges that any
key is pressed, it commands Application in SIM to perform ac-
cording to the chosen submenu. Next, the message as password
appears on the screen of mobile phone, user needs to enter 4-
digit password correctly according to the registration.
4. When entered the password successfully, Program Application on
the mobile phone converts the password and sends to Program Ap-
plication on SIM; next, the Application on SIM converts and en-
codes the password to be SMS and then sends to Server of Ser-
vice Provider.
5. User receives SMS to notify the balance as shown in the ex-
ample.
Referred to the process above, it is easier if using mobile
phone to perform because there is Program Application that supports
all operation completely; moreover, there is keyboard and screen to
display data conveniently. If using Module SIM900 to perform the
process, it cannot perform directly because there is no any
readymade Program Application that supports SIM unlike mobile phone.
However, user can use Commands of Module SIM900 to communicate with
SIM; for example, access Application in SIM, see lists of Menu
Application on SIM, or command module to perform according to the
chosen Submenu.
Example of Balance Check of “True Money” by using SIM900
First of all, it has to setup values for Module SIM900
completely, (please read more information from the Document
AN_SIM900_STK_UGD_V1.00.pdf
)
AT*PSSTKI=1<Ent>
;
เป:ดการใช"งาน STK function
OK
AT+CMGF=1<Ent>
;
แสดงในรIปแบบ TEXT mode
OK
AT+CMEE=2<Ent>
;
แสดงการรายงานของคMาส(ง
OK
AT+CSCS="UCS2"<Ent>
;
รIปแบบตวอกษรแบบ UCS2
OK
•
Close Module SIM900 and re-open; user can see message as shown
in the example, it means that there are 7 menus of STK.
*PSSTK: "SETUP MENU",1,4,"Menu",0,0,1,0,0,7
ETT CO., LTD.
-
29
-
www.etteam.com
