CODEWITHSUNDEEP
smsat-command
fractal fractal
fractal fractal

Reputation: 21

Unable to receive URC for an incoming SMS from a modem

I have an issue in being unable to recive the URC message from the modem whenever it receives an SMS.

I know that it receives them since i can find and read them if I use AT+CMGL but, i don't receive any notification when the modem gets them. I played around with the URC related commands but I've been unable to get it to work (other URCs work fine).

The modem is a BG600L M3 from Quectel and following is the sequence of commands i'm sending ("AT" is always omitted and the first command is literally "AT\r", basically an empty one).

//general config
AT\r
CFUN=1,0
E1
+QCFG=\"urc/ri/other\",\"pulse\",8,1
H0
&F
V1
+CMEE=1
&D0
E1
+CREG=2
+CGREG=2
+CEREG=2

//sms config
+CPMS=\"ME\",\"ME\",\"ME\"
+QINDCFG=\"smsincoming\",1
+CMGF=1
+CSDH=0
+CSCS=\"GSM\"
+CNMI=2,2,0,2,0

//doing some deleting and reading
+CMGD=1,3
+CPMS?

//getting the gps fix
+QGPS=1
+QGPSCFG=\"gnssconfig\",3   
+QGPSLOC=1
+QGPSEND

//resetting the gms connection
+CFUN=0
+CFUN=1,0

//setting up the gsm connection 
+QICFG=\"dataformat\",0,0
+QICFG=\"viewmode\",0
+QICFG=\"recvind\",1
+QICFG=\"tcp/retranscfg\",3,600
+QISDE=0
+QCFG=\"band\",0xf,0x80085,0x80085,1
+QCFG=\"nwscanmode\",1,1    
+QCFG=\"nwscanseq\",010101,1
+QCFG=\"iotopmode\",2,1

// checking if it's connected
+CREG?
+QNWINFO
+COPS?

//Getting the time
+CTZU=3
+CTZR=0
+QLTS
+CCLK?

Upvotes: 2

Views: 764

Answers (3)

gilf0yle
gilf0yle

Reputation: 1102

Use AT+CNMI? to check your current status of the modem. if the response is +CNMI: *,0,*,*,* you must set the +CNMI: <mode>,<mt>,<bm>,<ds>,<bfr> use the following command to set <mt> parameter to 1 that should mostly do it

AT+CNMI=2,1,0,0,0

If the problem still persists check if the memory is full by using the following command:

AT+CPMS?

the memory is full if the result looks like +CPMS: "ME", 255, 255,..... number on the left is the used memory and number on the right is the total memory if it filled try using the following memory to delete the messages

AT+CMGD=1,4

If you are using a quectel module try setting appropriate URC indicating option as follows

AT+QURCCFG=“urcport”

for more on setting URC indicating option check Problem receiving SMS notifications

Upvotes: 0

Hemant Mayatra
Hemant Mayatra

Reputation: 31

Try Below command, it works for me. AT+CNMI=2,1,0,0,0

Upvotes: 0

suraj patil
suraj patil

Reputation: 11

You can set AT+CNMI=2,1,2,0,0 , that should do the trick.

According to specification ETSI TS 127 005 V11.0.0 (2012-10)

+CNMI: <mode>,<mt>,<bm>,<ds>,<bfr>

by keeping <mt> value to 1 we should get indication when message is stored in ME/TA

<mt>: integer type (the rules for storing received SMs depend on its data coding scheme

0 No SMS-DELIVER indications are routed to the TE.

1 If SMS-DELIVER is stored into ME/TA, indication of the memory location is routed to the TE using unsolicited result code: +CMTI: <mem>,<index>

Upvotes: 0

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