GPRS Shield Receiving SMS

End-Of-Life Products & Services Tech support before 2012
#1

Hi,
I have not much experience in programming microcontrollers, this is why I have a problem.
I bought the GPRS shield and I managed to make calls and send some SMS via terminal using your sketches from the garden.
But now I am trying to receive and interpret incoming SMS.
How can I configure the shield to write the text of an incoming sms to the terminal?

Here is an example of the terminal output:

"
<0>ÿÿÿÿÿÿÿÿ
RDY

+CFUN: 1

+CPIN: READY

Call Ready
AT

OK
AT+CMGF=1

OK

+CMT: “+49xxxxxxxxxx”,"",“11/08/27,02:40:24+08”,145,32,0,0,"+497
"

The text I sent from my phone was “Test”.

Please can anyone help me?

Thank you

Ryanthusar

#2

I’m no expert but, Have you tried AT+CMGL (pg 101 garden.seeedstudio.com/images/a/ … _V1_00.pdf )

#3

Thank you for your reply jbaut.

Here is an example of what happens after sending "AT+CMGL=“REC READ” to the modem:

"Call Ready
AT+CMGF=1

OK
AT+CMGL=“REC READ”

+CMGL: 1,“REC READ”,"+49xxxxxxxxxx","",“11/08/26,22:53:14+08”,1
n
+CMGLE9",h
+CMGL: E9,6,p
+CMGL:E9,11eiifwsseGD614,an
"
I would like to get the messages itself shwn in plain text for interpreting them in an arduino sketch.

#4

My problem is solved.

First of all the buffer size declared in NewSoftSerial.h was too small.
After I changed it from 64 to 128 I was able to read the received SMS using i.e. “AT-CMGR=1”

To write received SMS directly to the terminal I used the following comands:

AT+CMGF=1

and

AT+CNMI=3,2,2,1,0

the result is shown here:

<0>ÿÿÿÿÿÿÿÿ
RDY

+CFUN: 1

+CPIN: READY

Call Ready
AT

OK
AT+CMGF=1

OK
AT+CMGR=1

+CMGR: “REC READ”,"+49xxxxxxxxxxx","",“11/08/26,22:53:14+08”,145,32,0,0,"+491710760000",145,17
Dies ist ein Test

OK
AT+CMGR=2

+CMGR: “REC READ”,"+49xxxxxxxxxxx","",“11/08/26,23:00:05+08”,145,32,0,0,"+491710760000",145,14
Noch ein Test?

OK

+CMTI: “SM”,10
AT+CMGR=10

+CMGR: “REC UNREAD”,"+49xxxxxxxxxxx","",“11/08/27,13:52:46+08”,145,32,0,0,"+491710760000",145,26
Klappt es nun wie es soll?

OK
AT+CNMI=3,2,2,1,0

OK

+CMT: “+49xxxxxxxxxxx”,"",“11/08/27,13:57:01+08”,145,32,0,0,"+491710760000",145,10
Und jetzt?

I hope this helps others who have the same problems as I had.

#5

How are you connecting? hardware or serial?

#6

The GPRS shield is connected via D7 and D8 to arduino.
The sketch from Step 1 of the GPRS-wiki is running on the arduino.
The arduino is connected via USB to my PC running windows 7.
I use Ba@y++ Terminal v1.9b.

I hope I understood you right?

#7

You are doing exactly right.

#8

Thanks for the info, but how then can your receive a list of all the SMSes on the SIM? Even 128/256 buffer size is not enough? Is there another way to this? Will it help if you use the arduino’s serials?

Regards

T