Using ofono for location service

Using ofono for location service

[Rajashekharaiah, Kiran KumarX]

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Hi,

I am trying to use ofono on a linux box with TELIT HE910. How can I enable stand-alone gps using ofono, so that I can get GPS data without cellular connection?

Also when I tried running "test-gnss" for testing AGPS, I get the following error(with ofonod daemon running in background):
NameError: name 'gnss' is not defined

Does this mean AGPS is not enabled? If so how can I enable it?

Regards,
Kiran

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Re: Using ofono for location service

[Denis Kenzior]

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Hi Kiran,

On 03/06/2015 05:55 AM, Rajashekharaiah, Kiran KumarX wrote:
> Hi,
>
> I am trying to use ofono on a linux box with TELIT HE910. How can I
> enable stand-alone gps using ofono, so that I can get GPS data without
> cellular connection?
>

The location-reporting atom is enabled in pre-sim, so in theory you 
should be able to use the modem as a GPS device without a SIM.

 From what I remember, oFono HE910 GPS support requires fairly new 
firmware and a special setting to work correctly.  See 
doc/telit-modem.txt for more information.

> Also when I tried running “test-gnss” for testing AGPS, I get the
> following error(with ofonod daemon running in background):
>
> *NameError: name 'gnss' is not defined*
>

Yes, sounds like no modems with the 
org.ofono.AssistedSatelliteNavigation interface were found.

> **
>
> Does this mean AGPS is not enabled? If so how can I enable it?
>
> **

Have you powered up your telit HE 910 via enable-modem?

Regards,
-Denis

RE: Using ofono for location service

[Rajashekharaiah, Kiran KumarX]

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Hi Denis,

-----Original Message-----
From: ofono [mailto:ofono-bounces(a)ofono.org] On Behalf Of Denis Kenzior
Sent: Friday, March 06, 2015 11:16 PM
To: ofono(a)ofono.org
Subject: Re: Using ofono for location service

Hi Kiran,

On 03/06/2015 05:55 AM, Rajashekharaiah, Kiran KumarX wrote:
> Hi,
>
> I am trying to use ofono on a linux box with TELIT HE910. How can I 
> enable stand-alone gps using ofono, so that I can get GPS data without 
> cellular connection?
>

The location-reporting atom is enabled in pre-sim, so in theory you should be able to use the modem as a GPS device without a SIM.

 From what I remember, oFono HE910 GPS support requires fairly new firmware and a special setting to work correctly.  See doc/telit-modem.txt for more information.

Kiran: I followed the doc/telit-modem.txt(I set AT#PORTCFG=8 and rebooted the modem)and the firmware version is 12.00.004. 
After running the ofonod and test/enable-modem, I ran a script to get location info. It gets disabled immediately. 
One more observation is, I get  "modem=/dev/ttyACM0 aux=/dev/ttyACM3 gps=/dev/ttyACM5" from ofonod logs, but /dev/ttyACM5 is
not accepting AT commands when I try from minicom.

Following are the logs:
./test/gn3
Connecting modem /he910_0...
ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_location_reporting_enable() lr=0x82e09e0
ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_portcfg_check_cb() lr=0x82e09e0 ok=1
ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_gps_enable_cb() lr=0x82e09e0 ok=1
ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_gps_ctl_cb() lr=0x82e09e0 ok=1
ofonod[2389]: src/modem.c:get_modem_property() modem 0x82e2ba0 property GPS
ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_location_reporting_disable() lr=0x82e09e0
ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_gps_disable_cb() lr=0x82e09e0, ok=1

The test script I am using is:

import dbus
import sys
import glib

bus = dbus.SystemBus()

if len(sys.argv) == 2:
        path = sys.argv[1]
else:
        manager = dbus.Interface(bus.get_object('org.ofono', '/'),
                        'org.ofono.Manager')
        modems = manager.GetModems()
        path = modems[0][0]

print("Connecting modem %s..." % path)
modem = dbus.Interface(bus.get_object('org.ofono', path),
                                                'org.ofono.LocationReporting')

fd = modem.Request()

Regards,
Kiran


> Also when I tried running "test-gnss" for testing AGPS, I get the 
> following error(with ofonod daemon running in background):
>
> *NameError: name 'gnss' is not defined*
>

Yes, sounds like no modems with the
org.ofono.AssistedSatelliteNavigation interface were found.

> **
>
> Does this mean AGPS is not enabled? If so how can I enable it?
>
> **

Have you powered up your telit HE 910 via enable-modem?

Regards,
-Denis
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Re: Using ofono for location service

[Denis Kenzior]

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Hi Kiran,

 > Following are the logs:
> ./test/gn3
> Connecting modem /he910_0...
> ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_location_reporting_enable() lr=0x82e09e0
> ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_portcfg_check_cb() lr=0x82e09e0 ok=1
> ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_gps_enable_cb() lr=0x82e09e0 ok=1
> ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_gps_ctl_cb() lr=0x82e09e0 ok=1
> ofonod[2389]: src/modem.c:get_modem_property() modem 0x82e2ba0 property GPS
> ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_location_reporting_disable() lr=0x82e09e0
> ofonod[2389]: drivers/telitmodem/location-reporting.c:telit_gps_disable_cb() lr=0x82e09e0, ok=1

Everything looks as it should here.

>
> The test script I am using is:
>
> import dbus
> import sys
> import glib
>
> bus = dbus.SystemBus()
>
> if len(sys.argv) == 2:
>          path = sys.argv[1]
> else:
>          manager = dbus.Interface(bus.get_object('org.ofono', '/'),
>                          'org.ofono.Manager')
>          modems = manager.GetModems()
>          path = modems[0][0]
>
> print("Connecting modem %s..." % path)
> modem = dbus.Interface(bus.get_object('org.ofono', path),
>                                                  'org.ofono.LocationReporting')
>
> fd = modem.Request()
>

What do you expect the script to do actually?

Once you obtain the file descriptor, your client must be around to do 
something with it (e.g. read NMEA strings).

As soon as the client(UNIX process) who performed the 'Request()' 
operation exits, oFono closes the fd and shuts down the NMEA port on the 
modem.

So everything is working as it should.

Regards,
-Denis

RE: Using ofono for location service

[Rajashekharaiah, Kiran KumarX]

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Hi Denis,

> Also when I tried running "test-gnss" for testing AGPS, I get the 
> following error(with ofonod daemon running in background):
>
> *NameError: name 'gnss' is not defined*
>

Yes, sounds like no modems with the
org.ofono.AssistedSatelliteNavigation interface were found.

> **
>
> Does this mean AGPS is not enabled? If so how can I enable it?
>
> **

>> Have you powered up your telit HE 910 via enable-modem?

Kiran: I executed in the following order and ppp is up, but still I get the error: *NameError: name 'gnss' is not defined*.
ofonod -> enable-modem -> activate-context  

When I run list-modem I get the following output, which does not list  "org.ofono.AssistedSatelliteNavigation":

[ /he910_0 ]
    Features = sms net gprs ussd gps sim 
    Emergency = 0
    Powered = 1
    Lockdown = 0
    Interfaces = org.ofono.SmartMessaging org.ofono.PushNotification org.ofono.MessageManager org.ofono.Phonebook org.ofono.NetworkRegistration org.ofono.ConnectionManager org.ofono.CallMeter org.ofono.SupplementaryServices org.ofono.VoiceCallManager org.ofono.CallBarring org.ofono.CallSettings org.ofono.CallForwarding org.ofono.MessageWaiting org.ofono.LocationReporting org.ofono.SimManager 
    Online = 1
    Model = HE910
    Revision = 12.00.004
    Type = hardware
    Serial = 357164040824024
    Manufacturer = Telit
    [ org.ofono.SmartMessaging ]
    [ org.ofono.PushNotification ]
    [ org.ofono.MessageManager ]
        Alphabet = default
        UseDeliveryReports = 0
        Bearer = cs-preferred
        ServiceCenterAddress = +919845087001
    [ org.ofono.Phonebook ]
    [ org.ofono.NetworkRegistration ]
        Status = registered
        Strength = 80
        Name = airtel
        LocationAreaCode = 34181
        Mode = auto
        MobileCountryCode = 404
        Technology = umts
        CellId = 27398329
        MobileNetworkCode = 45
    [ org.ofono.ConnectionManager ]
        Powered = 1
        Attached = 1
        Bearer = hsdpa
        Suspended = 0
        RoamingAllowed = 0
    [ org.ofono.CallMeter ]
        Currency = 
        CallMeter = 0
        AccumulatedCallMeter = 0
        PricePerUnit = 0.0
        AccumulatedCallMeterMaximum = 0
    [ org.ofono.SupplementaryServices ]
        State = idle
    [ org.ofono.VoiceCallManager ]
        EmergencyNumbers = 08 000 999 110 112 911 118 119 
    [ org.ofono.CallBarring ]
        VoiceOutgoing = disabled
        VoiceIncoming = disabled
    [ org.ofono.CallSettings ]
        HideCallerId = default
        CallingLinePresentation = enabled
        VoiceCallWaiting = enabled
        CalledLinePresentation = disabled
        ConnectedLineRestriction = disabled
        ConnectedLinePresentation = disabled
        CallingLineRestriction = permanent
        CallingNamePresentation = unknown
    [ org.ofono.CallForwarding ]
        ForwardingFlagOnSim = 0
        VoiceNoReplyTimeout = 20
        VoiceNotReachable = 
        VoiceBusy = 
        VoiceNoReply = 
        VoiceUnconditional = 
    [ org.ofono.MessageWaiting ]
        VoicemailMessageCount = 0
        VoicemailMailboxNumber = 
        VoicemailWaiting = 0
    [ org.ofono.LocationReporting ]
        Type = nmea
        Enabled = 0
    [ org.ofono.SimManager ]
        Retries = [pin2 = 3] [puk2 = 10] [pin = 3] [puk = 10] 
        MobileCountryCode = 404
        FixedDialing = 0
        SubscriberNumbers = 
        BarredDialing = 0
        CardIdentifier = 89914500050200371777
        LockedPins = 
        MobileNetworkCode = 45
        SubscriberIdentity = 404450520037177
        Present = 1
        PinRequired = none

Regards,
Kiran

Re: Using ofono for location service

[Denis Kenzior]

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Hi Kiran,

 > When I run list-modem I get the following output, which does not list 
  "org.ofono.AssistedSatelliteNavigation":

The he910 driver does not support this at the moment.  Patches are 
always welcome.

Regards,
-Denis

Re: Using ofono for location service

[Denis Kenzior]

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Hi Kiran,

 > Kiran: I am facing problem while reading from the file descriptor I 
got from modem.request(). One observation is, I get
> "modem=/dev/ttyACM0 aux=/dev/ttyACM3 gps=/dev/ttyACM5" from ofonod logs, but /dev/ttyACM5 is not accepting AT commands when I try from minicom.
> Should I change gps port also to /dev/ttyACM3?

I'm not familiar with how GPS is setup on the he910.  From what I 
remember it is a dedicated port that is activated using $GPS* related 
commands.

The port must be dedicated (so not /dev/ttyACM3) since the file 
descriptor is being passed to an untrusted client.

Regards,
-Denis

RE: Using ofono for location service

[Rajashekharaiah, Kiran KumarX]

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Hi Denis,

> Following are the logs:
> ./test/gn3
> Connecting modem /he910_0...
> ofonod[2389]: 
> drivers/telitmodem/location-reporting.c:telit_location_reporting_enabl
> e() lr=0x82e09e0
> ofonod[2389]: 
> drivers/telitmodem/location-reporting.c:telit_portcfg_check_cb()
> lr=0x82e09e0 ok=1
> ofonod[2389]: 
> drivers/telitmodem/location-reporting.c:telit_gps_enable_cb()
> lr=0x82e09e0 ok=1
> ofonod[2389]: 
> drivers/telitmodem/location-reporting.c:telit_gps_ctl_cb()
> lr=0x82e09e0 ok=1
> ofonod[2389]: src/modem.c:get_modem_property() modem 0x82e2ba0 
> property GPS
> ofonod[2389]: 
> drivers/telitmodem/location-reporting.c:telit_location_reporting_disab
> le() lr=0x82e09e0
> ofonod[2389]: 
> drivers/telitmodem/location-reporting.c:telit_gps_disable_cb()
> lr=0x82e09e0, ok=1

Everything looks as it should here.

>
> The test script I am using is:
>
> import dbus
> import sys
> import glib
>
> bus = dbus.SystemBus()
>
> if len(sys.argv) == 2:
>          path = sys.argv[1]
> else:
>          manager = dbus.Interface(bus.get_object('org.ofono', '/'),
>                          'org.ofono.Manager')
>          modems = manager.GetModems()
>          path = modems[0][0]
>
> print("Connecting modem %s..." % path) modem = 
> dbus.Interface(bus.get_object('org.ofono', path),
>                                                  
> 'org.ofono.LocationReporting')
>
> fd = modem.Request()
>

What do you expect the script to do actually?

Once you obtain the file descriptor, your client must be around to do something with it (e.g. read NMEA strings).

As soon as the client(UNIX process) who performed the 'Request()' 
operation exits, oFono closes the fd and shuts down the NMEA port on the modem.

So everything is working as it should.

Kiran: I am facing problem while reading from the file descriptor I got from modem.request(). One observation is, I get  
"modem=/dev/ttyACM0 aux=/dev/ttyACM3 gps=/dev/ttyACM5" from ofonod logs, but /dev/ttyACM5 is not accepting AT commands when I try from minicom.
Should I change gps port also to /dev/ttyACM3?

Regards,
Kiran