Hello,
I want to make a GPRS connection via SIM800L, using this diagram flow: (
The problem I encounter is from state 1 to state 2, when I run AT+CIIR command, it goes to state 9 !
Please see below my output ! Any help is usefull, thank you !
=========== ATI =============
ATI
SIM800 R14.18
OK
=========== AT+CIPSHUT ===========
AT+CIPSHUT
SHUT OK
=========== AT+CIPSTATUS ===========
AT+CIPSTATUS
OK
STATE: IP INITIAL
=========== AT+CSTT ===========
AT+CSTT="internet.vodafone.ro","",""
OK
=========== AT+CIPSTATUS ===========
AT+CIPSTATUS
OK
STATE: IP START
=========== AT+CGATT ===========
AT+CGATT?
+CGATT: 1
OK
AT+CGATT=1
OK
=========== AT+CGDCONT ===========
AT+CGDCONT= 1,"IP","internet.vodafone.ro","0.0.0.0",0,0
OK
=========== AT+COPS ===========
AT+COPS?
+COPS: 0,0,"CONNEX GSM"
OK
=========== AT+CREG ===========
AT+CREG?
+CREG: 1,1
OK
AT+CREG=1
OK
AT+CREG?
+CREG: 1,1
OK
=========== AT+CIPSTATUS ===========
AT+CIPSTATUS
OK
STATE: IP START
=========== AT+CIICR ===========
AT+CIICR=?
OK
AT+CIICR
+PDP: DEACT
ERROR
=========== AT+CIPSTATUS ===========
AT+CIPSTATUS
OK
STATE: PDP DEACT
=========== AT+CIFSR ===========
AT+CIFSR
ERROR
=========== AT+CIPSTATUS ===========
AT+CIPSTATUS
OK
STATE: PDP DEACT
I know that only AT+CSTT=“apn”,“pass”, AT+CIICR and AT+CIFSR where needed but I’ve used the other commands to show more usefull(?) info.