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I use simcom SIM5215E module. It not support keypad. I want to use camera port to be a gpio for scan keypad with lua.
I set port to gpio with AT+CCGSWT=0 for gpio mode. But I can't set value with AT+CGSETV command.
In manual, It can set only gpio 0,2,3,5.
AT+ccgswt=?
+CCGSWT: (0-1)
OK...
chipseller
thank for help. I search internet and found some information. I try. it work. By adding ",15" after command. I open at command manual. It is <dcs>. I never use this parameter in sim900.
AT+CUSD=1,"*121#",15
OK
+CUSD: 0,"balance is 492.60",?
Hi Chipseller
I change gsm from sim900 to sim5215E.
I got error from sent ussd. It can use with sim900.
AT+CUSD=1,"*121#"
OK
+CME ERROR: retry operation
Do you have SIM5215E firmware?
This is my gsm information.
Model: SIMCOM_SIM5215E
Revision: SIM5215E_V1.5
firmware : 1575B16SIM5215E
Hi I try use sim900 to detect DTMF but found error. I use firmware 1137B11SIM900M64_ST. please help.
Data sent: AT+CGMR
Data received: AT+CGMR
Revision:1137B11SIM900M64_ST
OK
Data sent: AT+DDET=1
Data received: AT+DDET=1
ERROR
Data sent: AT+DDET=0
Data received: AT+DDET=0
ERROR
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