Differences

This shows you the differences between two versions of the page.

--- linux:modem3g [2013/05/19 18:57] – rlunaro
+++ linux:modem3g [2013/05/29 19:26] – removed rlunaro
@@ Line 1: / Line 1: @@
-====== Connect with a 3G modem with command line ======
-I have a modem Huawei E1752Cu HSPA. What I want to do is the following: 1) send and receive an SMS using the modem and 2) establish a broadband connection using the modem.
-Because I don't have a concrete idea of what to do next, I am exploring both sides: 1) using sms to communicate with the raspberry and 2) using mobile broadband to communicate with the raspberry. The fares of having a mobile connected all the time (plain fare are about 15 euros/month) and in the case of the sms you only pay the sms you send, so in some cases is advisable using only sms.
-===== Setup modem =====
-Install modem-manager:
-<code>
-# sudo apt-get install modemmanager
-</code>
-it will detect the modem, do necessary loading of modules and things like that. It is advisable to use it as a service, so when plugin the modem it will be authomatically configured.
-I reommend to run it the ''--debug'' option enabled in order to see what is happening behind the scenes:
-<code>
-root@raspberrypi:/home/pi# modem-manager  --debug
-modem-manager[16723]: <info>  [1359305305.945270] [main.c:167] main(): ModemManager (version 0.5.2.0) starting...
-modem-manager[16723]: <info>  [1359305305.993128] [mm-manager.c:120] load_plugin(): Loaded plugin Option
-modem-manager[16723]: <info>  [1359305306.002902] [mm-manager.c:120] load_plugin(): Loaded plugin ZTE
-modem-manager[16723]: <info>  [1359305306.013057] [mm-manager.c:120] load_plugin(): Loaded plugin Huawei
-modem-manager[16723]: <info>  [1359305306.020689] [mm-manager.c:120] load_plugin(): Loaded plugin X22X
-modem-manager[16723]: <info>  [1359305306.028594] [mm-manager.c:120] load_plugin(): Loaded plugin Gobi
-modem-manager[16723]: <info>  [1359305306.036247] [mm-manager.c:120] load_plugin(): Loaded plugin Nokia
-modem-manager[16723]: <info>  [1359305306.046679] [mm-manager.c:120] load_plugin(): Loaded plugin Samsung
-modem-manager[16723]: <info>  [1359305306.054036] [mm-manager.c:120] load_plugin(): Loaded plugin Linktop
-modem-manager[16723]: <info>  [1359305306.064143] [mm-manager.c:120] load_plugin(): Loaded plugin Ericsson MBM
-modem-manager[16723]: <info>  [1359305306.072771] [mm-manager.c:120] load_plugin(): Loaded plugin Wavecom
-modem-manager[16723]: <info>  [1359305306.081609] [mm-manager.c:120] load_plugin(): Loaded plugin Novatel
-modem-manager[16723]: <info>  [1359305306.091642] [mm-manager.c:120] load_plugin(): Loaded plugin Option High-Speed
-modem-manager[16723]: <info>  [1359305306.101939] [mm-manager.c:120] load_plugin(): Loaded plugin Sierra
-modem-manager[16723]: <info>  [1359305306.110765] [mm-manager.c:120] load_plugin(): Loaded plugin Generic
-modem-manager[16723]: <info>  [1359305306.118949] [mm-manager.c:120] load_plugin(): Loaded plugin SimTech
-modem-manager[16723]: <info>  [1359305306.127009] [mm-manager.c:120] load_plugin(): Loaded plugin MotoC
-modem-manager[16723]: <info>  [1359305306.134973] [mm-manager.c:120] load_plugin(): Loaded plugin Longcheer
-modem-manager[16723]: <info>  [1359305306.142911] [mm-manager.c:120] load_plugin(): Loaded plugin AnyData
-modem-manager[16723]: <debug> [1359305306.203809] [mm-manager.c:491] try_supports_port(): (Huawei): (ttyUSB1) deferring support check
-</code>
-Many lines will evidence where is the modem located:
-<code>
-modem-manager[16723]: <debug> [1359305306.394255] [mm-at-serial-port.c:333] debug_log(): (ttyUSB0): --> 'AT+GCAP<CR>'
-modem-manager[16723]: <debug> [1359305307.099166] [mm-at-serial-port.c:333] debug_log(): (ttyUSB0): <-- 'AT+GCAP'
-modem-manager[16723]: <debug> [1359305307.102651] [mm-at-serial-port.c:333] debug_log(): (ttyUSB0): <-- '<CR><CR><LF>+CME ERROR: SIM PIN required<CR><LF>'
-</code>
-In my case is /dev/ttyUSB0.
-===== Send and receive SMS =====
-My next step is to send and receive a test sms. First, I will install minicom to do the test directly typing the AT commands to the modem.
-<code>
-# sudo apt-get install minicom
-</code>
-<code>
-# minicom --device /dev/ttyUSB0
-</code>
-It is advisable to check out these pages in order to know the basic AT commands to do the task:
-  * [[http://www.shapeshifter.se/2008/04/30/list-of-at-commands/]] - Interesting to make a connection to the internet
-  * [[http://www.developershome.com/sms/atCommandsIntro.asp]]
-==== Enter the pin, check pin status, etc ====
-See pin status:
-<code>
-AT+CPIN?
-+CPIN: SIM PIN   # it needs pin of the SIM
-OK
-</code>
-Enter pin:
-<code>
-AT+CPIN=9999 # put your pin here
-OK
-</code>
-==== Network registration ====
-Check out network registration and register into network if neccesary:
-<code>
-AT+CREG?
-+CREG: 0,5   # 5 means connected
-</code>
-Description of the values:
-<n>
-  * Disable unsolicited status callback.
-  * Enable unsolicited status callback, +CREG: <stat>
-  * Enable unsolicited status callback, +CREG: <stat>,[,<lac>,<ci>[,<AcT>]]
-<stat>
-  * Not registered, not searching
-  * Registered to home network
-  * Not registered, searching for network
-  * Registration denied
-  * Registered, roaming
-You can change the status with the following command:
-<code>
-AT+CREG=1
-</code>
-==== Send an sms ====
-There are many ways to send an sms. You can send it directly, write first the message into the memory of the modem, etc...
-**Direct sending**
-<code>
-AT+CMGF=1               # say the modem to operate in sms mode
-OK
-AT+CMGS="669807321"     # send a message directly
-> text your message here, and end the message with ^Z (control+z)
-</code>
-<code>
-AT+CMGF=1               # say the modem to operate in sms mode
-AT+CMGW="669807321"
-> A simple demo of SMS text messaging.
-+CMSS: 1                # the ID of the message in memory
-AT+CMSS=1               # send the message with id = 1
-</code>
-==== Read a message ====
-To list all the messages in the memory:
-<code>
-</code>
-==== Delete a message ====
-To delete a message:
-<code>
-AT+CMGD=2
-</code>
-==== Lista de operadores moviles ====
-<code>
-AT+CGDCONT?
-</code>
-Y usamos uno:
-<code>
-AT+CGDCONT=1
-</code>
-===== Connect to internet =====
-INSTALAMOS PPP Y WDIAL:
-<code>
-# sudo apt-get install wvdial ppp
-</code>
-~~DISQUS~~