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I am trying to Read SMS through HSDPA Modem. I Tried

  1. AT+CMGR=1
  2. AT+CMGR=123
  3. AT+CMGR="ALL'
  4. AT+CMGR="REC ALL"
  5. AT+CMGL="ALL"

Commands but No Sucess. Is Any problem with serialport configuration or something else Any other possible solution please help me

  1. Baud Rate:9600
  2. Data bits:8
  3. Parity:None
  4. Stop bit:1
Vadim Kotov
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Rohan
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  • HSPDA is distinct from SMS. What does your modem's documentation say? – Dai Jan 05 '14 at 07:15
  • I got it From BSNL India they Did't provide any Documentation – Rohan Jan 05 '14 at 07:41
  • Have you seen this StackOverflow question: http://stackoverflow.com/questions/4235030/why-i-am-not-able-to-receive-sms-using-at-commands?rq=1 – user1725145 Jan 05 '14 at 12:14
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    Exactly what do you mean by "no success"? Could you post the complete command and response serial communication? – hlovdal Jan 16 '14 at 22:32
  • Would be useful to see what you sent and received from the serial connection so that we can help you here. Do any AT commands work? Have you tried to send just AT to see if you get and OK back? – Matt Aldridge May 06 '14 at 06:57

1 Answers1

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Once you have connected your terminal emulator to your modem (typically /dev/ttyUSB0 on Linux), try AT. If you get an OK or ERROR that means you have no problem with serial port configuration because the modem is responding to you. If you get nothing (ei, no reply from the modem), then you probably have a serial connection or modem hardware issue. Personnaly I'm using miniterm.py (on Linux) and the configuration is

maurice@mickey> sudo miniterm.py -e /dev/ttyUSB0`
--- Miniterm on /dev/ttyUSB0: 9600,8,N,1 ---

Just as yours.

Regarding reading the SMSes, at+cmgl=? should reply either ERROR or a list of statuses. If you get ERROR, this means your modem doesn't accept SMS. Otherwise you should get something like +cmgl: ("REC UNREAD","REC READ","STO UNSENT","STO SENT","ALL")

Now, if you issue at+cmgr, the answer should look like

+CMGL: 8,"REC UNREAD","+XXXXXXXXXXXX",,"16/02/19,19:52:07+12"
Test 1
+CMGL: 9,"REC UNREAD","+XXXXXXXXXXXX",,"16/02/19,19:52:16+12"
Test 2

where +XXXXXXXXXXXX is the sender MSISDN and "Test 1" is the message sent in the SMS (its content). Again, if you get ERROR, that means your modem doesn't accept SMSes. If you have sent some SMSes but the list is empty, maybe SMS are blocked on the HLR for this specific SIM.

To read the 8th SMS, issue at+cmgr=8 and you should get

+CMGR: "REC READ","+XXXXXXXXXXXX",,"16/02/19,19:52:07+12"
Test 1

OK
mszmurlo
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  • I type this `sudo miniterm.py -e /dev/ttyUSB0` and works. but it always reply OK not stopping. And when I type `at+` it says command not support – Al Kasih Apr 30 '18 at 03:54