GPS fix

Hi guys, I've just fix my ob gps!.. now I can get satellite fix easily outside building. I change this parameter at /etc/gps_brcm_conf.xml

arp-supl-enable="true" arp-supl-cap-msb="true" arp-supl-cap-msa="true" arp-supl-cap-ecid="false"
acSuplServer="lge.glpals.com" SuplPort="7275" tlsCertPath="/system/etc/cert/lge.cer"
tlsStopForInvPath="true" arp-supl-use-apn="true"
ReAidingType="3" ReAidingRetryIntervalSec="5" ReAidingIntervalSec="1800"

LbsEnable="true" LbsLocal="false" LbsServer="bcmlbsqa2.glpals.com" LbsPort="7275"
LbsSyncLto="true" LbsSyncCells="true" ltoFileName="lto.dat"
LbsGetGpsAssistance="true" LbsSyncLtoThresholdDays="3"
LbsCellEnable="true" LbsGpsEnable="true" LbsWlanEnable="false"
/>

Hope this will be a solution for someone who need gps fix.

Sent from my LG-P970 using xda app-developers app

mint-an said:

which rom??

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Click to collapse

Hi mint-an,

I'm using stock rom from v30c.

Sent from my LG-P970 using xda app-developers app

mirrr46 said:

there is one and its works good on izs v2 http://xdaforums.com/showthread.php?t=1494862

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Click to collapse

Hi anto,

This is what I do, when I make my gps working like it should:

- turn off gps
- uninstall any gps status/monitor/test software
- install only gps test by chartcross from play store
- try to clean the gps data by going to gps test setting.
- And go to open sky (it's just for the first time)
- goto terminal emulator and type the following:

su
stop glgps
/system/bin/glgps -d /system/etc/gps_brcm_conf.xml

-Turn on data connection
-Turn on gps
-Run gps test
-It will download lto.dat and start to sync with cell tower. This is an old broadcom chip it must use lto.dat to work properly.
-Wait until its fixed. And you're ready to go.

Ps. this is very important, please use your left hand, and use index finger at the top edge and your thumb at the bottom edge to hold the phone. I don't know why but it should give better signal reception.

This is my gps_brcm_conf.xml look like:

<!--taesook.yoon@lge.com 20110725 - change devicename from vsnet0 to rmnet0 -->
<!--taesook.yoon@lge.com 20110725 - change arp-supl-cap-ecid from true to false -->
<?xml version="1.0" encoding="utf-8"?>
<glgps xmlns="http://www.glpals.com/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.glpals.com/ glconfig.xsd" >
<!--HAL Confguration: Please make sure to split the hal configuration when it's bigger than 1K bytes. -->
<hal
acPortName="/dev/ttyO0" lBaudRate="460800" cLogEnabled="true" acLogDirectory="/sdcard/gps/log" cLogEnableInitState="false"

enhanced-assisted="false"

arp-supl-enable="true" arp-supl-cap-msb="true" arp-supl-cap-msa="true" arp-supl-cap-ecid="false"
acSuplServer="lge.glpals.com" SuplPort="7275" tlsCertPath="/system/etc/cert/lge.cer"
tlsStopForInvPath="true" arp-supl-use-apn="true"
ReAidingType="3" ReAidingRetryIntervalSec="5" ReAidingIntervalSec="1800"

LbsEnable="true" LbsLocal="false" LbsServer="bcmlbsqa2.glpals.com" LbsPort="7275"
LbsSyncLto="true" LbsSyncCells="true" ltoFileName="lto.dat"
LbsGetGpsAssistance="true" LbsSyncLtoThresholdDays="3"
LbsCellEnable="true" LbsGpsEnable="true" LbsWlanEnable="false"
/>

<hal
acNmeaOutName="/data/gpspipe"
ResetOnStart="false"
gpioDelayMs="80"
ctrlPipe="/data/gps/glgpsctrl"
lcsApiSockName="/data/gps/lcs.socket"
acNvStoDir="/data/gps/"
gpioNStdbyPath="/sys/devices/platform/hub_gps_gpio/poweron"
gpioNResetPath="/sys/devices/platform/hub_gps_gpio/reset"
/>
<!-- Sample HAL Conf to enable TLS CA checking and GPIO setting.
acSuplServer="www.spirent-lcs.com" SuplPort="7275" tlsCertPath="/system/etc/spirentroot.cer" arp-supl-interface-device="vsnet0"
-->

<!-- Parameters passed to GlEngine -->
<!--gll
LogPriMask="LOG_DEBUG"
LogFacMask="LOG_GLLAPI | LOG_DEVIA | LOG_NMEA | LOG_RAWDATA | LOG_DEVMS | LOG_ASIC_IO | LOG_BBTEST | LOG_DEVET | LOG_MESM | LOG_DEVKF | LOG_DEVJG | LOG_DEVMR"
FrqPlan="FRQ_PLAN_10MHZ_2PPM_10MHZ_100PPB" FrqPlan="FRQ_PLAN_10MHZ_2PPM" "FRQ_PLAN_16_8MHZ_2PPM"
RfType="GL_RF_PALS7" "GL_RF_BARRACUDA" "GL_RF_2075_LN22" "GL_RF_2075_BRCM" "GL_RF_PALS7_BRCM" "GL_RF_BARRACUDA_BRCM" "GL_RF_BARRACUDA_EXT_LNA"
NOTE: "GL_RF_BARRACUDA_EXT_LNA" should be used for BAS
FrqPlan="FRQ_PLAN_26MHZ_2PPM_26MHZ_300PPB"
/-->

<!-- NOTE: BrcmRFwildBase, BrcmRFclkDiv, anBrcmRFclkRefHz only needed for Broadcom RF front end test chips
( i.e. GL_RF_2075_BRCM and GL_RF_PALS7_BRCM )
BrcmRFwildBase="0x1E2D6409"
BrcmRFclkDiv="21"
BrcmRFclkRefHz="26000000"
pps-enable="false" pps-offset-madb shell chmod 777 /system/bin/gpsd/glgps_tmp
s="0" pps-width-ns="100"

LogFacMask="LOG_GLLAPI | LOG_DEVIA | LOG_NMEA | LOG_RAWDATA | LOG_DEVMS | LOG_ASIC_IO | LOG_BBTEST | LOG_DEVET | LOG_MESM | LOG_DEVKF | LOG_DEVJG | LOG_DEVMR | LOG_DEVCV"

-->

<gll
LogPriMask="LOG_DEBUG"
LogFacMask=" LOG_DEVMR"
FrqPlan="FRQ_PLAN_26MHZ_2PPM_26MHZ_300PPB"
RfType="GL_RF_4751_DANUBE_EXT_LNA"
psf-not-connected="true"
/>




<!-- List of jobs can be performed by the GPS controller -->

<!-- The default job all parameters are set to default values -->
<job id="normal">
<task >
<startup ignore_osc="true" ignore_rom_alm="true" ignore_nav="true" ignore_pos="false" ignore_ram_alm="true" ignore_time="true"/>
</task>
</job>



</glgps>

Sent from my LG-P970 using xda app-developers app

Hi anto,

Did you try to hold the ob with your midle finger and your thumb using your left hand? It will boost your signal reception. Just look at the attached picture.

.

Sent from my LG-P970 using xda app-developers app

anto_c78 said:

Yeah!! It's true, works better with the phone in that position, I've got a fix in 30 seconds and with 6 satellite!!
This is a new mystery...

The bad news is,as you know, that i can't drive my car with only one hand

Also without any connection (wi-fi or data mobile) the signal
is not stable and is lost frequently; it back to a view of three satellites without fix.

So I think that is a great workaround, but not the final solution on nameless rom.

Thanks for your though.

Click to expand...

Click to collapse

Maybe you can use a cup

I will try driving without data connection and see if its still working good.
I will let you know the result.

FYI the A-GPS always use cell towers to finding satellite position faster.
Broadcom uses LTO and qualcomm chip uses XTRA data.
AFAIK sirfstar can find and lock satellite without towers, like samsung did for their gs2..

No worries bro

Hi, attached are the screenshot pictures of my OB when I traveling today without data connection.
Look at the yellow dots, its almost perfect, it gives fine snr level.
not bad for old gps chip ei...