内容文稿分析mands manual v

LTEModuleSeriesEC20GNSSATCommandsManual

mands_Manual

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Aboutthe

istory

Revision

Date

Author

Description

1.0

2015-02-28

TommyZHANG

Initial

H

1.1 2015-06-09 TommyZHANG

Added <uartdebug> and <ne>parametersinAT+QGPSCFGcommand.

DeletedAT+QGPSXTRAUPLcommand.

Contents

Aboutthe 2

Contents 3

TableIndex 4

Introduction 5

HowtoUseGNSS 5

NMEASentencesType 6

IntroductionofgpsOneXTRA 6

GNSSPowerSavingManagement 7

DPO(DynamicPowerOptimization) 7

ODP(On-DemandPositioning) 7

DescriptionofATCommand 9

AT+QGPSCFG ConfigureGNSS 9

AT+QGPSDELDeleteAssistanceData 13

AT+QGPS OperateGPSSession 13

AT+QGPSEND TerminateGNSSSession 15

AT+QGPSLOC ObtainPosition 15

AT+QGPSGNMEAObtainNMEASentences 17

AT+QGPSXTRAEnablegpsOneXTRAFunctionality 18

AT+QGPSXTRATIME InjectgpsOneXTRATime 19

AT+QGPSXTRADATAInjectgpsOneXTRADataManually 20

IntroductionofURC 21

ExpiredXTRAData 21

Example 23

TurnOnandOfftheGNSSEngine 23

ApplicationofGNSSnmeasrc 23

ExampleofInjectinggpsOneXTRA 24

AppendixAReference 25

AppendixBSummaryofErrorCodes 26

TableIndex

TABLE1:RELATEDS 25

TABLE2:TERMSANDABBREVIATIONS 25

TABLE3:SUMMARYOFERRORCODES 26

Introduction

EC20integratesaGNSSengine,whichsupportsGPSandGLONASSdoublesystemandprovidesgpsOneXTRAassistance.EC20GNSSengineishigh-performanceandsuitableforvariousapplicationswhichlowest-costandaccuratepositioningareneeded.Meanwhile,itc sosupportpositiontrackingwithoutnetworkassistance,andGNSScapabilitieswhenGSM/WCDMAisoutofnetworkcoverageareas.EC20GNSScanbeappliedinthefollowingoccasions:turn-by-turnnavigationapplications,assettracking,buddytracking,location-awaregames,homingandfleetmanagement.

HowtoUseGNSS

EC20GNSSengineallowscalculatinglocationwithoutanyassistancefromthenetwork.TheprocedureofturningonGNSSisshownasbelow:

Step1:ConfigurecorrespondingdemandsbyAT+QGPSCFG.Step2:ActiveGNSSenginebyAT+QGPS.

Step3:AfterGNSSsessionisstartedsuccessfullyandGNSShasfixed,positioninginformationcanbeobtainedbythreeways:

NMEAsentencesoutputto"usbnmea"portbydefault,youcanreadtheporttoobtainNMEAsentences.

YoucanuseAT+QGPSLOCtoobtainsomepositioninginformationdirectly,suchaslatitude,longitude,height,timeandpositioningtypeandsoon.

Afterenabling<nmeasrc>byAT+QGPSCFG,youcanacquirethespecifiedNMEAsentenceby

AT+QGPSGNMEA.If<nmeasrc>isdisabled,thiscommandcannotbeused.

Step4:YoucanterminateGNSSbytwoways:

Iftheparameter<fixcount>oftheAT+QGPSissetto0inStep2,GNSSenginewillgetpositioncontinuously,anditcanbeendedbyAT+QGPSEND.

Iftheactualfixtimesreachtothespecified<fixcount>value,theenginewillstopautomatically;inthisprocessyoucanusethecommandAT+QGPSENDtoendthesession.

NMEASentencesType

TheNMEAsentencesarecompatiblewithNMEA-0183protocol,andallofthestandardNMEAsentenceshavetwokindsofprefix.

ForGPSsentences,theprefixis“GP”,asbelow:

GPGGA-GlobalPositioningSystemFixData,Time,Positionandrelatedfixdata

GPRMC- mendedminimumdata

GPGSV-Detailedsa litedata

GPGSA-Overallsa litedata

GPVTG-Vectortrackandspeedovertheground

AndforGLONASSsentences,theprefixesare"GL"and"GN",asbelow:

GLGSV-Detailedsa litedata

GNGSA-Overallsa litedata

GNGNS-PositioningSystem

IntroductionofgpsOneXTRA

gpsOneXTRAassistanceenhancesstandaloneperformance,andsimplifiesGNSSassistancedeliverytoGNSSengine,includingephemeris,almanac,ionosphere,UTC,healthandcoarsetimeassistance.AfterbootinggpsOneXTRA,TTFF(TimetoFirstFix)canbereducedby18to30sec(ormoreinharshsignalenvironments).AndthegpsOneXTRAdataneedstobeupdatedonceperday(oreveryacoupleofdays)whichisobtainedfromanXTRAserveronthenetwork.

InordertousegpsOneXTRAfeature,youshouldensurethatvalidgpsOneXTRAassistancedataisavailable.FirstlydownloadanewgpsOneXTRAbinaryfilefromoneofthegpsOneXTRAassistancewebserversviaHTTP.Thefilesarenamedasxtra.binforGPSonlyandxtra2.binforGPS+GLONASS.Theexactfilesizeshouldbelessthan50kB:

gpsOneXTRAdataneedstobeupdatedregularly.YoucanquerythegpsOneXTRAdatastatusby

AT+QGPSXTRADATA?toupdategpsOneXTRAdataproperly.

TheworkingprocedureofgpsOneXTRAisshownasfollows:

Step1:IfgpsOneXTRAisdisabled,enableitbyAT+QGPSXTRAandrestartthemodule.

Step2:ConfirmthecurrentvalidityofgpsOneXTRAdatabyAT+QGPSXTRADATA?.Step3:Downloadxtra.binorxtra2.bintothemoduleviaHTTPATcommand.

Step4:InjectthecorrecttimebyAT+QGPSXTRATIME.

Step5:Injectthedownloadedxtra.binorxtra2.binfilebyAT+QGPSXTRADATA.Step6:OthersstepsseeChapter1.1.

GNSSPowerSavingManagement

EC20GNSSengineprovidespowersavingsolutionsbyDPOandODP,thusextendingbatterylife,izingtalkandstandbytime,andenhancingaccuracyandTTFF.

DPO(DynamicPowerOptimization)

DPO(DynamicPowerOptimization)isapower-savingsolutionwhichattemptstoturnoffGNSSRFandotherunneededcomponents.DPOtakeseffectafterconfiguring<dpoenable>viaAT+QGPSCFG.ThereareseveralpreconditionstoturnontheDPO,shownasbelow:

AllSVs>26dB-Hzmusthaveephemerisorrecent(<3.5days)XTRAalmanaccorrectionsforthoseSVs.

HealthorUTCinformationisnottransmittedover-the-air.

ValidpositionandHEPEshouldbelessthan50mandwithinusers’specifiedvalueinQoS.

6SVs>37dB-Hzor4SVs>26dB-HzandhavealmanacandhealthforallSVs.

BenefitsandimpactsofDPO:

WhentheDPOfeatureisonandtheSVornavigationaldannotbedecoded,theGPSreceiverwillnotbecontinuous.

DuringtheDPO,theSBASfeatureiseffectivelydisabled.ThereceivercannotdemodulatetheSBASmessages.DPOalwaystakesprecedenceoverSBAS.

TTFFandyieldwillnotbeimpacted.

ODP(On-DemandPositioning)

WhenOn-DemandPositioning(ODP)isenabled,standaloneGNSSpositioningwillbetriggeredinthebackground.ThepositionscalculatedasaresultofODParenotpresentedtotheapplication,NMEA,orthenetwork.However,whentheon-demandsessionisoperatingandtheusersornetworkrequestaGNSSsession,theon-demandsessionisimmediayterminatedandthe ingrequestisimplemented.

ODPsystemrequirements:(1)ODPrequiresvalidgpsOneXTRAassistancedata.(2)ODPrequiresthatEC20isinservice.IfthesetworequirementsarenotfulfilledODPwillbeturnedoffautomatically.AndODPwillbesuspendedifaregularGNSSfixisrunning.

Intheenabledlowpowermode,theGNSSengineisturnedontoconsumelowpower.RequeststodeterminetheGNSSpositionarereturnedwithareducedtime-to-fixwhilethismodeisactive.IntheenabledReadymode,theGNSSengineiskeptactiveandisavailabletoperformfixedposition.RequeststodeterminetheGNSSpositionareimmediayreturnedwhilethismodeisactive.Thebatterywillbegreatlyimpactedinthismode.MaintenanceofpositionandtimeuncertaintyalsoimprovestheperformanceofE911onUMTS.

Configure<odpcontrol>tosettwodifferentmodesbyAT+QGPSCFG:

Lowpowermode:

Low-frequencybackgroundGNSStrackingsession.

Ingoodsignalcondition,useshorterintervalwithfrequentODPsession(i.e.,per5min).

Inweaksignalcondition,uselongerinterval,butlessfrequentODPsession(i.e.,twiceperhour).

Readymode:

GNSSenginewillstart1Hzpositioningsession.

MaingoalistokeepGNSSenginereadysothatwhentheapplicationdemandsapositionfromtheGNSSengine,positioncanbereportedquickly.

DescriptionofATCommand

AT+QGPSCFG ConfigureGNSS

ThiscommandcanbeusedtoconfiguretheusingofGLONASS,switchoverofNMEAsentencesoutputportandsettingofpowersavingandsoon.

AT+QGPSCFG ConfigureGNSS

Testcommand

AT+QGPSCFG=?

Response

+QGPSCFG:“outport”,("none","usbnmea","uartdebug")

+QGPSCFG:“nmeasrc”,(0,1)

+QGPSCFG:“gpsnmeatype”,(0-31)

+QGPSCFG:“glonassnmeatype”,(0-7)

+QGPSCFG:“glonassenable”,(0,1)

+QGPSCFG:“odpcontrol”,(0-2)

+QGPSCFG:“dpoenable”,(0,1)

+QGPSCFG:“ne”,(0-2)

OK

ConfigureNMEAsentencesoutport

AT+QGPSCFG=“outport”[,<outport>]

Response

Whentherearetwoparameters:

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Whenthesecondparameterisomitted,querythecurrentsetting:

+QGPSCFG:“outport”,<outport>

OK

Enablenmeasrc,obtainNMEAsentencesbyAT+QGPSGNMEA

AT+QGPSCFG=“nmeasrc”[,<nmeasrc

>]

Response

Whentherearetwoparameters:

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Whenthesecondparameterisomitted,querythecurrentsetting:

+QGPSCFG:“nmeasrc”,<nmeasrc>

OK

ConfigureoutputtypeofGPSNMEAsentencesAT+QGPSCFG=“gpsnmeatype”[,<gpsnmeatype>]

Response

Whentherearetwoparameters:

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Whenthesecondparameterisomitted,querythecurrentsetting:

+QGPSCFG:“gpsnmeatype”,<gpsnmeatype>

OK

Configure output type of GLONASSNMEAsentencesAT+QGPSCFG=“glonassnmeatype”[,<glonassnmeatype>]

Response

Whentherearetwoparameters:

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Whenthesecondparameterisomitted,querythecurrentsetting:

+QGPSCFG:“glonassnmeatype”,<glonassnmeatype>

OK

ConfigureGLONASSAT+QGPSCFG=“glonassenable”[,<glonassenable>]

Response

Whentherearetwoparameters:

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Whenthesecondparameterisomitted,querythecurrentsetting:

+QGPSCFG:“glonassenable”,<glonassenable>

OK

ConfigureODPmodeAT+QGPSCFG=“odpcontrol”[,<odpcontrol>]

Response

Whentherearetwoparameters:

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Whenthesecondparameterisomitted,querythecurrentsetting:

+QGPSCFG:“odpcontrol”,<odpcontrol>

OK

ConfigureDPOAT+QGPSCFG=“dpoenable”[,<dpoenable>]

Response

Whentherearetwoparameters:

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Whenthesecondparameterisomitted,querythecurrentsetting:

+QGPSCFG:“dpoenable”,<dpoenable>

OK

ConfigureGPSne

AT+QGPSCFG=“ne”[,<ne>]

Response

Whentherearetwoparameters:

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Whenthesecondparameterisomitted,querythecurrentsetting:

+QGPSCFG:“ne”,<ne>

OK

Reference

Parameter

<outport> ConfiguretheoutputportofNMEAsentences,andthesettingwillbeautosavedtoNVRAM.

“none” CloseNMEAsentenceoutputting

“usbnmea” OutputthroughUSBNMEAport“uartdebug”OutputthroughUARTDEBUGport

<nmeasrc> Afterenabled,originalNMEAsentencescanbeacquiredbyAT+QGPSGNMEA,andthesettingwillbeautosavedtoNVRAM.Meanwhile,sentencesareoutputthroughNMEAportasbefore

Disable

Enable

<gpsnmeatype> ConfigureoutputtypeofGPSNMEAsentencesbyORed,thesettingwillbeautosavedtoNVRAM.Thedefaultvalueis31.

GGA

RMC

4 GSV

8 GSA

16 VTG

<glonassnmeatype>ConfigureoutputtypeofGLONASSNMEAsentencesbyORed,thesettingwillbeautosavedtoNVRAM.Thedefaultvalueis0.

1 GSV

2 GSA

4 GNS

<glonassenable> Enable/DisableGLONASS,thesettingwillbeautosavedtoNVRAM.Parametertakeseffectaftermodulereset.IfGLONASSisdisabledand

<glonassnmeatype>isnotzero,theGLONASSNMEAsentenceswillbeoutput.

DisableGLONASS

EnableGLONASS

<odpcontrol> SetODPmode,thesettingwillbeautosavedtoNVRAM.

DisableODP

Lowpowermode

Readymode

<dpoenable> Enable/DisableDPO,thesettingwillbeautosavedtoNVRAM.

DisableDPO

EnableDPO

<ne> Setuserneandcontrolne.

UsernewithoutSSL

UsernewithSSL

Controlne

<errcode> Integertype,indicatetheerrorcodeoftheoperation.Ifitisnot0,itisthetypeoferror(PleaserefertotheChapter5).

AT+QGPSDEL DeleteAssistanceData

Deleteassistancedatatooperatecoldstart,hotstartandwarmstart.ThiscommandcanonlybeexecutedwhenGPSengineisturnedoff.Afterdeletingtheassistancedatabythiscommand,coldstartwillbeendbyAT+QGPS,orperformhot/warmstartwhenthehot/warmstartconditionispermitted.

AT+QGPSDEL DeleteAssistanceData

TestCommand

AT+QGPSDEL=?

Response

+QGPSDEL:(0-3)

OK

WriteCommand

AT+QGPSDEL=<deletetype>

Response

OK

IferrorisrelatedtoMEfunctnaly:

+CMEERROR errcde>

Reference

Parameter

<deletetype> Deletedattyp

Deletellassistancedata,notincludeXTRAdat EnorcecoldstartafterstartingGNS.

Donotdeleteanydata.PerfomhotstartiftheconditionsarepermittedafterstartingGNSS.

Deleterelateddata.PerformwarmstartiftheconditionsarepermittedafterstartingGNSS

DeletegpOneXTRAdta.

<errcode> Integertype,teheerrorcodeoftheoperation.Ifitisnot0,itisthetypeoferror(PleaserefertotheChapter5).

AT+QGPS OperateGPSSession

TurnonGNSSengine,current<gnssmode>onlysupportsStandaloneGNSS.When<fixcount>is0,GNSSenginewillpositioncontinuously,youcanterminatethesessionbyAT+QGPSEND.When

<fixcount>isnot0,andtheactualfixtimesreachtothespecifiedvalue,GNSSenginewillterminateautomatically.

AT+QGPS OperateGPSSession

TestCommand

AT+QGPS=?

Response

+QGPS:(1-4),(1-255),(0-1000),(0-1000),(1-65535)

OK

ReadcurrentGNSSsessionstate

AT+QGPS?

Response

+QGPS:<gnssstate>

OK

WriteCommandAT+QGPS=<gnssmode>[,<fixmaxtime>[,<fixmaxdist>[,<fixcount>[,<fixrate

>]]]]

Response

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Reference

Parameter

<gnssstate> GNSSstate

GNSSoff

GNSSon

<gnssmode> GNSSstartmode

Standalone

MS-based

MS-assisted

Speedoptimal

<fixmaxtime> Themaxpostioningtime,unit:s,indicatestheresponsetimeduringthemeasuementoftheGSSpseudorange,theuppertimelimitoftheGPSsaliteseaching,includthetimefordemodulatingtheephemerisdataandcalculatingthepsition

1-30-255Maxpositioningtime

<fixmaxdist> Accuracythresholdofpositioning,unit:m.

0-50-1000

<fixcount> Fixtimes

0–1000 0indicatescontinuousfix.Non0indicatestheactualfixtimes.

<fixrate> Theintervalsbetweenthefirstandsecondpositioning,unit:s.

1–65535

<errcode> Integertype,indicatestheerrorcodeoftheoperation.Ifitisnot0,itisthetypeoferror(PleaserefertotheChapter5).

AT+QGPSEND TerminateGNSSSession

TurnonGNSSenginebyAT+QGPS,when<fixcount>is0,GNSSenginewillfixcontinuously,youcantoterminateitbyAT+QGPSEND.When<fixcount>isnot0,andtheactualfixtimesreachtothe

specifiedvalue,itwillterminateautomatically.

AT+QGPSEND TerminateGNSSSession

TestCommand

AT+QGPSEND=?

Response

OK

Readcommand

AT+QGPSEND?

Response

OK

ExecutionCommand,terminateGNSSsession

AT+QGPSEND

Response

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Reference

Parameter

<errcode> Integertype,indicatetheerrorcodeoftheoperation.Ifitisnot0,itisthetypeoferror(PleaserefertotheChapter5).

AT+QGPSLOC ObtainPostion

Beforeusingthiscommand,GNSSenginemustbeturnedonbyAT+QGPS.Ifitdoesnotpositionsuccessfully,+CMEERROR:<errcode>willbereturnedtoindicatethecorrespondingsituation.PleasenotethattheresponseappearsoncurrentATport.

AT+QGPSLOC ObtainPosition

TestCommand

AT+QGPSLOC=?

Response

+QGPSLOC:

<UTC>,<latitude>,<longitude>,<hdop>,<altitude>,<fix>,<cog>,<spkm>,<spkn>,<date>,<nsat>

OK

ReadCommand

AT+QGPSLOC=<mode>

Response

+QGPSLOC:

<UTC>,<latitude>,<longitude>,<hdop>,<altitude>,<fix>,<cog>,<spkm>,<spkn>,<date>,<nsat>

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Reference

Parameter

<mode> Controlthelatitudeandlongitudedisyformat

0:<latitude>,<longitude>format:ddmm.mmmmN/S,dddmm.mmmmE/W

1:<latitude>,<longitude>format:ddmm.mmmmmm,N/S,dddmm.mmmmmm,E/W2:<latitude>,<longitude>format:(-)dd.ddddd,(-)ddd.ddddd

<UTC> UTCtime.Format:hhmmss.sss(QuotedfromGPGGAsentence).

<latitude> Latitude.Format:ddmm.mmmmN/S(QuotedfromGPGGAsentence).dd 00-89(degree)

mm.mmmm 00.0000-59.9999(minute)N/S Northlatitude/Southlatitude

<longitude> Longitude.Format:dddmm.mmmmE/W(QuotedfromGPGGAsentence).ddd 000-179(degree)

mm.mmmm 00.0000-59.9999(minute)E/W Eastlongitude/Westlongitude

<hdop> HorizontalPrecision,0.5-99.9(quotedfromGPGGAsentence)

<altitude> Thealtitudeoftheantennaawayfromthesealevel(unit:m),accuratetoonedecimalce(QuotdfromGPGGAsentence).

<fix> GNSSpositionigmode(quotedfromGNGSA/GPGSA)

2Dpositioning

3Dpositioning

<cog> Groundheadingbasedontruenorth.Format:ddd.mm(quotedfromGPVTGsentence)

ddd 000-359(degree)

mm 00-59(minute)

<spkm> Speedoverground.Format:xxxx.x,unit:Km/h,accuratetoonedecimalce.(QuotedfromGPVTGsentence).

<spkn> Speedoverground.Format:xxxx.x,unit:knots,accuratetoonedecimalce.(QuotedfromGPVTGsentence).

<date> UTCtimewhenpositioning.Format:ddmmyy(QuotedfromGPRMCsentence).

<nsat> Numberofsalites,from00to12(Thefirst0willalsobetransferred,quotedfromGPGGAsentence).

<errcode> Integertype,indicatetheerrorcodeoftheoperation.Ifitisnot0,itisthetypeoferror(PleaserefertotheChapter5).

AT+QGPSGNMEA ObtainNMEASentences

Beforeusingthiscommand,GNSSenginemustbeturnedonbyAT+QGPS,andenable<nmeasrc>by

AT+QGPSCFG.ThiscommandcanbeusedtoobtainNMEAsentences.

If<gpsnmeatype>and<glonassnmeatype>is0,thiscommandcannotobtainNMEAsentences.Ifithasalreadyobtainedsentencesaftertheengineisactivated,youclosetheoutputbyAT+QGPSCFG=“gpsnmeatype”/“glonassnmeatype”,thenthesentenceobtainedbythiscommandisthelastences.PleasenotethattheresponseappearsoncurrentATport.

AT+QGPSGNMEA ObtainNMEASentences

TestCommand

AT+QGPSGNMEA=?

Response

+QGPSGNMEA:(“GGA”,“RMC”,“GSV”,“GSA”,“VTG”,“GNS”)

OK

ReadCommand

AT+QGPSGNMEA?

Response

OK

QueryGGAinformation

AT+QGPSGNMEA=“GGA”

Response

+QGPSGNMEA:GGAsentenceOK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

QueryRMCinformation

AT+QGPSGNMEA=“RMC”

Response

+QGPSGNMEA:RMCsentenceOK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

QueryGSVinformation

AT+QGPSGNMEA=“GSV”

Response

+QGPSGNMEA:GSVsentenceOK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

QueryGSAinformation

AT+QGPSGNMEA=“GSA”

Response

+QGPSGNMEA:GSAsentenceOK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

QueryVTGinformation

AT+QGPSGNMEA=“VTG”

Response

+QGPSGNMEA:VTGsentenceOK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

QueryGNSinformation

AT+QGPSGNMEA=“GNS”

Response

+QGPSGNMEA:GNSsentenceOK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Reference

Parameter

<errcode> Integertype,indicatetheerrorcodeoftheoperation.Ifitisnot0,itisthetypeoferror(PleaserefertotheChapter5).

AT+QGPSXTRA EnablegpsOneXTRAFunctionality

ThiscommandcanbeusedtoenablegpsOneXTRAfunctionalityaftertrestartingGNSSengine.

AT+QGPSXTRA EnablegpsOneXTRAFunctionality

TestCommand

AT+QGPSXTRA=?

Response

+QGPSXTRA:(0-2),(0-10),(1-120),(24-168)

OK

ReadCommand

AT+QGPSXTRA?

Response

+QGPSXTRA:<xtraenable>

OK

WriteCommand

AT+QGPSXTRA=<xtraenable>[,<retries>,<retryInt>,<dloadInt>]

Response

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Reference

Parameter

<xtraenable> EnablegpsOneXTRAfunctionality,thesettingwillbeautosavedtoNVRAM.

DisablegpsOneXTRA

EnablegpsOneXTRAandinjectdatabymanual

EnablegpsOneXTRAandautomaticallyinjectdata

<retries> Automaticallydownloadretrycount.Itiseffectivewhen<xtraenable>issetto2.

0-3-10

<retryInt> Automaticallydownloadretryinterval.Itiseffectivewhen<xtraenable>issetto2.

1-10-120

<dloadInt> Automaticallydownloadtimeinterval.Itiseffectivewhen<xtraenable>issetto2.

24-48-168

<errcode> Integertype,indicatetheerrorcodeoftheoperation.Ifitisnot0,itisthetypeoferror(PleaserefertotheChapter5).

AT+QGPSXTRATIME InjectgpsOneXTRATime

ThiscommandcanbeusedtoinjecttimetoGNSSengine.Beforeusingit,youmustturnofftheGNSSengineandconfigure<xtraenable>byAT+QGPSXTRA.AfteractivatinggpsOneXTRAfunctionality,GNSSenginewillaskforgpsOneXTRAtimeandgpsOneXTRAdata.Meanwhile,beforeinjectinggpsOneXTRAdata,gpsOneXTRAtimemustbeinjectedfirstbythiscommand.

AT+QGPSXTRATIME InjectgpsOneXTRATime

TestCommand

AT+QGPSXTRATIME=?

Response

+QGPSXTRATIME:0,<xtratime>,(0,1),(0,1),<uncrtn>

OK

ReadCommand

AT+QGPSXTRATIME?

Response

OK

InjectXTRAtimemanually

AT+QGPSXTRATIME=<op>,<xtratime

>[,<utc>[,<>,<uncrtn>]]

Response

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Reference

Parameter

<op> Operationtype

0 InjectgpsOneXTRAtime

<xtratime> Current UTC/GPS time, the format of time: YYYY/MM/DD, hh:mm:ss,e.g.2015/01/03,15:34:50.

<utc> Thetypeoftime

0

GPStime

1

UTCtime

<

>

0

orallowGPSsubsystemtoacceptthetimeentered.

Allowacceptances

1

acceptances

<uncrtn> Uncertaintyoftime.Unit:ms,defaultvalue:3500ms.ItindicatesthetimedifferencebetweensendingarequesttotheSNTPserverandreceivingaresponsefromtheSNTPserver.Ifthesettimeislessthan3.5s,itwillbecountedas3.5s.

<errcode> Integertype,indicatetheerrorcodeoftheoperation.Ifitisnot0,itisthetypeoferror(PleaserefertotheChapter5).

AT+QGPSXTRADATA InjectgpsOneXTRADataManually

ThiscommandcanbeusedtoinjectgpsOneXTRAdatatoGNSSengine.Beforeusingit,youmustturnofftheGNSSengineandenableXTRAbyAT+QGPSXTRA.Meanwhile,beforeinjectinggpsOneXTRAdata,gpsOneXTRAtimemustbeinjectedfirstbyAT+QGPSXTRATIME.

BeforeoperatingAT+QGPSXTRADommand,youshouldstorethevalidgpsOneXTRAdataintoRAMorUFSofthemudule(mendedtosaveittoRAM).Afteroperatingthiscommandsuccessfully,gpsOneXTRAdanbedeleted.Atthismoment,youcanquerythevalidityofgpsOneXTRAdatabyAT+QGPSXTRADATA?.

AT+QGPSXTRADATA InjectgpsOneXTRADataManually

TestCommand

AT+QGPSXTRADATA=?

Response

+QGPSXTRADATA:<xtradatafilename>

OK

Query the validity of the currentgpsOneXTRAdataAT+QGPSXTRADATA?

Response

+QGPSXTRADATA:

<xtradatadurtime>,<injecteddatatime>

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

InjectgpsOneXTRAdatamanually

AT+QGPSXTRADATA=<xtradatafilename>

Response

OK

IferrorisrelatedtoMEfunctionality:

+CMEERROR:<errcode>

Reference

Parameter

<xtradatafilename> FilenameofgpsOneXTRAdatafile,e.g.“xtra.bin”or“xtra2.bin”.

<xtradatadurtime> ValidtimeofinjectedgpsOneXTRAdata,unit:minute.

0 NogpsOneXTRAfileorgpsOneXTRAfileisoverdue1-10080 ValidtimeofgpsOneXTRAfile

<injecteddatatime> StartingtimeofthevalidtimeofXTRAdata,format:

“YYYY/MM/DD,hh:mm:ss”,e.g.“2015/01/03,15:34:50”.

<errcode> Integertype,indicatetheerrorcodeoftheoperation.Ifitisnot0,itisthetypeoferror(PleaserefertotheChapter5).

IntroductionofURC

EC20GNSSenginewillinformsomeinformationviaURC.

ExpiredXTRAData

WhenXTRAdatai pired,itwillbeinformedbyURC.

ExpiredXTRAData

+QGPSURC:

“xtradataexpire”,<xtradatadurtime>,<injecteddatatime>

XTRAdatai pired,andneedtobeupdated.

Parameter

<xtradatadurtime> ValidtimeofinjectedXTRAdata,unit:minute.

0 NoXTRAfileorXTRAfilei pired

<injecteddatatime> Starting time of the valid time of XTRA data, format:“YYYY/MM/DD,hh:mm:ss”,e.g.“2015/01/03,15:34:50”

Example

TurnOnandOfftheGNSSEngine

TheexampleusesdefaultargumentstostartGNSSengine,afte