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How to access phone specific behaviour via dbus using the ofono API? [answered]

asked 2014-01-23 13:43:12 +0200

marsch gravatar image

updated 2014-01-23 18:37:01 +0200

Looking after a reliable source for the ofono APIs, I finally got something in my hands that looks quite good (nemomobile-packages/ofono).

However even when trying seemingly obvious stuff like the following, I get an error stating that the method is unknown:

dbus-send --print-reply --system --dest=org.ofono /ril_0 org.ofono.SimManager.GetProperties

Am I doing something fundamentally wrong here? Admittedly, my Jolla currently hasn't a SIM card inserted, nevertheless I wouldn't expect an error message telling me that the GetProperties method is unknown.

Interestingly, querying GetProperties of org.ofono.Modem works without any issues:

dbus-send --print-reply --system --dest=org.ofono /ril_0 org.ofono.Modem.GetProperties

My particular interest goes towards the Powered property of org.ofono.CellBroadcast, as it allows a good guess about the current connectivity. This one doesn't work for me either.

Any hints welcome, maybe I just don't see the obvious.

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The question has been closed for the following reason "the question is answered, an answer was accepted" by marsch
close date 2014-01-30 17:34:30.326330


As I just stubled over this, does this line show any effect for anybody when "Powered" has been true before? According to nemomobile/ofono this is a readwrite parameter:

dbus-send --system --type=method_call --dest=org.ofono /ril_0 org.ofono.Modem.SetProperty string:"Powered" variant:boolean:false
marsch ( 2014-02-05 15:07:22 +0200 )edit

2 Answers

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answered 2014-01-24 13:21:36 +0200

marttipiirainen gravatar image

oFono follows the general D-Bus concept that interfaces can appear and disappear dynamically, as the underlying services become available or not.

When there is no network connection, you are not guaranteed to have a Cell Broadcast interface; when there is no SIM, you are not guaranteed to have a SIM interface; etc.

You can always check from org.ofono.Modem.Interfaces (and listen to changes there) and you're good.

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answered 2014-01-23 21:07:13 +0200

CsTom gravatar image

What's the problem? Try it with a SIM, perhaps that helps...

$ dbus-send --system --print-reply --dest=org.ofono /ril_0 org.ofono.CellBroadcast.GetProperties
method return sender=:1.5 -> dest=:1.632 reply_serial=2
   array [
      dict entry(
         string "Powered"
         variant             boolean true
      dict entry(
         string "Topics"
         variant             string ""
$ dbus-send --system --print-reply --dest=org.ofono /ril_0 org.ofono.SimManager.GetProperties
method return sender=:1.5 -> dest=:1.634 reply_serial=2
   array [
      dict entry(
         string "Present"
         variant             boolean true
      dict entry(
         string "CardIdentifier"
         variant             string "1234567"
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I just wouldn't have expected dbus-send mumble stuff about non-existing functions when this isn't the actual problem.

marsch ( 2014-01-23 22:50:25 +0200 )edit

Well if the object (SimManager) is not present then ofc it's methods are not available - thus the error msg.

foss4ever ( 2014-01-24 17:21:47 +0200 )edit

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Asked: 2014-01-23 13:43:12 +0200

Seen: 4,387 times

Last updated: Jan 24 '14