{{tag>[hardware linux huawei gps mu609]}}
=====Huawei MU609 - send SMS using AT commands=====
~~NOTOC~~
====Documentation=====
Read the following documentation for more information:
  * Huawei MU609 miniPCIe {{::huawei_20mu609_20mini_20pcie_20module_20hardware_20guide-_28v200r001_02_2c_20english_29.pdf|Hardware guide}}.
  * Huawei MU609 miniPCIe {{:huawei_mu609_hspa_lga_module_at_command_interface_specification-_v100r002_04_english_.pdf|AT command spec.}}
  * Huawei MU609 miniPCIe {{::huawei_20mu609_20hspa_20lga_20module_20application_20guide-_28v100r002_02_2c_20english_29.pdf|Application guide}}.

    * **ttyUSB0**: MODEM port: simulated using USB, for AT command interaction and establishing data connection.
    * **ttyUSB1**: DIAG port: simulated using USB, for DIAG (diagnostic) command interaction (mainly used to debug modules at present).
    * **ttyUSB2**: PCUI port: simulated using USB, for AT command interaction only.
    * **ttyUSB3**: GPS NMEA port: simulated using USB, sending unsolicited indications for NMEA positioning data only.
    * **ttyUSB4**: GPS Control port: simulated using USB, for GPS AT command interaction only.
    * **eth3**: ECM port: for establishing communication connection.

====Serial connection====
  * Connect to the device:<code>screen /dev/ttyUSB0 9600</code>
====Send SMS using AT commands====

  * **optional:** Reset the mobile terminal (MT). Wait for the MT to come back and reconnect:<code>at+cfun=1,1</code>
  * **optional:** System configuration, you need to set CS or CS_ONLY, CS = circuit switched. If you want to set up a dataconnection, configure CS_PS. PS = packet switched. If you don't include CS, you will receive an error: ''+CMS ERROR: 500''. <code>at^syscfg=2,2,3FFFFFFF,1,2</code>
  * Check if SIM is ready or needs to be unlocked:<code>at^cpin?
at^cpin=1234</code>
  * Are we registered to the network?<code>AT+COPS?</code>
  * Configure message format, text mode:<code>at+cmgf=1</code>
  * Set text mode parameter (GSM):<code>at+csmp=,,,0</code>
  * Set SMS service center number:<code>AT+CSCA="+31653131313"</code>
  * Set Terminal Equipment (TE) character set:<code>at+cscs="GSM"</code>
  * Send message to number:<code>at+cmgs="+31612345678" <enter>
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