Re: [Bluez-users] [Fwd: Re: Regarding GetInfo]

["Yogesh Jagtap" <jagtapyb@gmail.com>]

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Hi Marcel,

I dont have problem with signature. For me, I just want device class. I have
written following code.

        msg = dbus_message_new_method_call("org.bluez", "/org/bluez/hci0",
INTERFACE,"GetInfo");
        reply = dbus_connection_send_with_reply_and_block (conn,msg,
-1,&error);
        dbus_message_iter_init (reply, &iter);
        printf("\nSignature::%s",dbus_message_get_signature(reply));
        printf("\nIter
signature::%s",dbus_message_iter_get_signature(&iter));
        dbus_message_iter_recurse (&iter, &dict_iter);
        printf("\ndict_Iter
signature::%s",dbus_message_iter_get_signature(&dict_iter));
        dbus_message_iter_recurse (&dict_iter, &data_iter);
        printf("\ndata_Iter
signature::%s",dbus_message_iter_get_signature(&data_iter));
        while (dbus_message_iter_has_next(&data_iter))
        {
            printf("\ndata
type::%d",(dbus_message_iter_get_arg_type(&data_iter)));
            dbus_message_iter_next(&data_iter);
        }
following is output:
Signature::a{sv}
Iter signature::a{sv}
dict_Iter signature::{sv}
data_Iter signature::s
data type::115

I am expecting all values in the while loop. I want to iterate all adapter
info. Please correct me where I am wrong.

Regards
Yogesh


*From*: Marcel Holtmann
<marcel@holtmann.org<Marcel%20Holtmann%20%3cmarcel@holtmann.org%3e>
> >
> *Reply-To*: BlueZ users <bluez-users@lists.sourceforge.net<BlueZ%20users%20%3cbluez-users@lists.sourceforge.net%3e>
> >
> *To*: BlueZ users <bluez-users@lists.sourceforge.net<BlueZ%20users%20%3cbluez-users@lists.sourceforge.net%3e>
> >
> *Subject*: Re: [Bluez-users] Regarding GetInfo
> *Date*: Wed, 17 Oct 2007 16:25:56 +0200
>
> Hi Yogesh,
>
>  I want to get device class. But DBus API's are available for getting
>  device Major class, Minor class and service class. But no API to get
>  device class. To get Device class I have two options,
>  1. Get device class from GetInfo.
>  2. Get Major class, Minor class and service class and from that
>  construct device class.
>  So I choose first way, But I am not able to get device class.
>
>  To get information about adapter, I have written code like this.
>
>  msg = dbus_message_new_method_call("org.bluez", "/org/bluez/hci0",
>  INTERFACE,"GetInfo");
>          reply = dbus_connection_send_with_reply_and_block (conn,msg,
>  -1,&error);
>          dbus_message_iter_init (reply, &iter);
>          printf("\nSignature::%s",dbus_message_get_signature(reply));
>          cout<<"\nIter
>  signature::"<<dbus_message_iter_get_signature(&iter);
>          dbus_message_iter_recurse (&iter, &dict_iter);
>          cout<<"\ndict_Iter
>  signature::"<<dbus_message_iter_get_signature(&dict_iter);
>          dbus_message_iter_recurse (&dict_iter, &data_iter);
>          cout<<"\ndata_Iter
>  signature::"<<dbus_message_iter_get_signature(&data_iter);
>          while (dbus_message_iter_has_next(&data_iter))
>          {
>             cout<<"\ndata
> type::"<<(dbus_message_iter_get_arg_type(&data_iter));
>              dbus_message_iter_next(&data_iter);
>          }
>
>  But its not working. When I print signatures, it is printing like this
>  Signature::a{sv}
>  Iter signature::a{sv}
>  dict_Iter signature::{sv}
>  data_Iter signature::s
>  data type::115
>
>  And I found that,
>   a{sv} is a dictionary with 's'tring keys and 'v'ariants as values
>
>  So does that mean GetInfo is returning only one key value pair?
>  Or I am missing something?
>
> we fixed the signature in the last release. That might explain an issue.
> Other than that, I can't read C++ code. Use plain C or Python to make me
> look at your code.
>
> Regards
>
> Marcel
>
>
>
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