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GE863-GPS Software User Guide
GE863-GPS Software User Guide
1vv0300724 Rev. 2 - 24/01/07
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 Contents: 1 Overview .......................................................................................................4 2 Basic Operations..........................................................................................5 2.1 Command Syntax ...................................................................................................................................5 2.1.1 Interface Style......
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 3.5.2 IRA character set ............................................................................................................................64 3.5.3 Writing a New SMS to storage.......................................................................................................66 3.5.4 Sending an SMS previously stored........................................................................................
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 1 Overview The purpose of this document is the description of some common AT command procedures that may be used with the Telit GE863-GPS module. In this document, all the basic functions of a mobile phone will be taken into account and for each one of them, a proper command sequence will be suggested. In the Advanced operation section the more useful services and features of the GSM network supported by the T
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2 Basic Operations 2.1 Command Syntax In the next paragraphs the following notations are used: represents the Carriage Return Character (13) represents the Line Feed Character (10) represents a parameter whatever name is in place of the xx. (< and > characters are only for delimiting the parameter and must not be issued to the terminal). [] represents an optional parameter whatever
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.2 Command Response Timeout Every command issued to the Telit GE863-GPS returns a result response if response codes are enabled (default) (see command ATQn). The time needed to process the given command and return the response varies from command to command and may depend also from the network on which the command may interact. As a result every command is provided with a proper timeout time, if this time ela
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 Command Time-Out (Seconds) +CLCC 20 +CPAS 5 +CPIN 20 +CSQ 5 +CPBS 5 +CPBR 20 +CPBF 20 +CPBW 20 +CALM 5 +CRSL 5 +CLVL 5 +CMUT 5 +CACM 20 +CAMM 20 +CPUC 20 +CMEE 5 +VTS 20 +GMI 5 +GMM 5 +GMR 5 +GSN 20 I3 5 I4 5 I5 5 +CSMS 5 +CPMS 5 +CMGF 5 +CSCA 20 +CSMP 5 +CSDH 5 +CSAS 5 +CRES 5 +CNMI 5 +CMGS 180 / 5 for prompt”>” +CMSS 180 +CMGW 5 / 5 for prompt”>” +CMGD 5 +CMGR 5 +CMGL 5 #CAP
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 Command Time-Out (Seconds) #SHDN 10 #QTEMP 10 #SGPO 10 #GGPI 10 #MONI 10 #CGMI 5 #CGMM 5 #CGMR 5 #CGSN 20 #CIMI 5 +CGACT 180 +CGATT 180 +CGDATA 20 +CGDCONT 20 +CGPADDR 20 +CGQMIN 20 +CGQREQ 20 Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 8 of 109
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.3 Turning ON the GE863-GPS To turn on the GE863-GPS the pin ON# must be tied low for at least 1 second and then released. A simple circuit to do it is: ON# Power ON impulse GND NOTE: don't use any pull up resistor on the ON# line. Using pull up resistor may bring to latch up problems on the GE863-GPS power regulator and improper power off of the module. The line ON# must be connected only in open co
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.4 Turning OFF the GE863-GPS The turning off of the device can be done in two ways: • by software command • by hardware shutdown When the device is shut down by software command or by hardware shutdown, it issues to the network a detach request that informs the network that the device will not be reachable any more. 2.4.1.1 Software shutdown • Send command AT#SHDN • wait for OK response The
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.4.1.3 Hardware Unconditional SHUTDOWN To unconditionally SHUTDOWN the GE863-GPS the pin RESET# must be tied low for at least 200 milliseconds and then released. A simple circuit to do it is: RESET# Unconditional Power OFF impulse GND NOTE: don't use any pull up resistor on the RESET# line nor any totem pole digital output. Using pull up resistor may bring to latch up problems on the GE863-GPS pow
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.5 Checking GSM device functionality After a proper power on the device is ready to receive AT commands on the serial port. Several things have to be checked in order to be sure that the device is ready to send and receive calls and SMS: 2.5.1 Autobauding At startup it is necessary to send an AT command to make the device set the right speed and character format of the serial port. When this is done the devic
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.5.2 SIM presence checking After autobauding the first thing to check is the SIM presence and PIN code insertion, this can be done with the following commands: 2.5.2.1 Enable the Extended error result codes • send command AT+CMEE=1 • wait for OK response or if you prefer the verbose format instead of the numerical format then: • send command AT+CMEE=2 • wait for OK response 2.5.2.2 Query SIM pr
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.5.2.3 Provide SIM PIN (only if required see point 2.5.2.2) • send command AT+CPIN=**** where **** stands for the SIM PIN code (e.g. 1234) • wait for response: Response Reason Action OK SIM PIN was correct Proceed ahead ERROR the PIN code inserted is not Retry from par. 2.5.2.2 correct NOTE: When receiving the ERROR message, repeat Query SIM presence and status since after 3 failed attempts SIM P
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.5.3 Network checking 2.5.3.1 Query network status • send command AT+CREG? • wait for response: Response Reason Action +CME ERROR: 10 SIM not present or damaged Check SIM or require SIM insertion and repeat from par. 2.5.2.2 +CME ERROR: 11 SIM is present and PIN is Repeat par. 2.5.2.3 required to continue operations +CREG: 0,0 No GSM/DCS network is found Check for antenna cable or connection (antenna
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.5.3.2 Network operator identification Once the mobile has registered on some network (or even if it has returned +CREG:x,3), it is possible to query the mobile for network identifications codes an names: • send command AT+COPS=? • wait for response in the format: +COPS: [list of supported ( ,=0)>,, =2)>)s][,,(list of supported s), (list of supported
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 2.5.3.3 Check for received signal strength & quality Once the mobile has registered on one network, it may be useful to know the received signal strength & quality to give the user an indication of the reliability of the network. • send command AT+CSQ • wait for response in the format: +CSQ: , OK where: is an integer from 0 to 99 that indicates the received signal strength: <
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 29 -55 dBm MMI may indicate 4 antenna bars 30 -53 dBm MMI may indicate 4 antenna bars 31 -51 dBm or more MMI may indicate 4 antenna bars 99 not detected MMI may indicate flashing antenna bars NOTE: when is less than 6, only 1 MMI antenna bar, the quality of a call will be poor and the call may even drop. is an integer from 0 to 7 and 99 that reports the received signal quality measured on the
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 #MONI: BSIC: RxQual: LAC: Id: ARFCN: PWR: dBmTA: OK or in the case the network name is not known: #MONI: Cc: Nc: BSIC: RxQual: LAC: Id: ARFCN: PWR: dBm TA: OK where: = name of network operator = country code = network operator code = progressive number of adjacent cell <
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GE863-GPS Software User Guide 1vv0300724 Rev. 2 - 24/01/07 command: AT#MONI? Answer: #MONI: Cc: 010 Nc: 03 BSIC:23 RxQual:7 LAC:0001 Id:0001 ARFCN: 60 PWR: -83 dBm TA:0 OK In this case the mobile is registered on the network whose Country code is 010 and Network operator code is 03, the signal strength is -83dBm (MMI may indicate 4 antenna bars as reported on the table 5). The other information received is strictly technical and should not be given to the us
