program

sms develop

Introduce

  1. Different between RS232 and USB interface
    For RS232, use serial operation directory, not need driver.
    For USB, should intall driver.

  2. OS support
    Both windows and Linux will be supported, if the device support RS232, and
    most of it support AT command, customer develop application with AT mostly.

Installation

  1. Minicom

Ref:

  1. Gnokii

Issue

minicom, not response for input
Serial port setup –>Hardware Flow Contorl : NO
Local on/off

http://blog.sina.com.cn/s/blog_5d0e8d0d01015svy.html

AT

  • get SIM ID

    at+ccid

  • get Chip Model

    ati3

    at+cgmr

  • get signal strength
    normal : 16~31,
    SMS err: <16 or="">31(display 99)

    at+csq

  • get baud rate

    at+ipr?

  • set baud rate (after set, need to re-connect)

    at+ipr=115200

  • save configuration

    at&w

  • set SMS format

    at+cmgf=1

  • send SMS, success if return “+CMGS: “

    at+cmgs=137**

    Hi, this is a SMS test

  • read SMS, 4 is the position of SMS

    at+cmgr=4

  • get number of SMS center

    at+csca?

  • calling

    atd137**;

  • hand up

    ath

  • check state of SMS module

    at+cfun?

  • reboot SMS module

    at+cfun=0
    OK
    at+cfun=1
    OK

  • get IMEI code

    at+wmsn or at+cgsn

  • Full view

    at+ccid
+CCID: "898600p1011130234927"

OK
ati3
657e09gg.Q24PL002 1961548 103107 17:56

OK
at+cgmr
657e09gg.Q24PL002 1961548 103107 17:56

OK
at+csq
+CSQ: 25,0

OK
at+ipr?
+IPR: 115200

OK
at+ipr=9600
OK

at
OK
at&w
OK

at+csq
+CSQ: 25,99

OK
at+cmgf=1
OK
at+cmgs=13707070909
> Hi, this is SMS test.
+CMGS: 201

OK

Ref http://www.sendsms.cn/download/js1.pdf

Features

  1. auto detect device by baut-rate
  2. simple interface
    1). send message
    2). recv message

FAQ

  1. Fail to find device
  2. Fail to send message
    there are many reasons to cause this, list the main reasons as below:
    1). device error
    1). baut-rate error
    1). signal too weak

Reference