[Bluez-users] Regarding GetInfo

[Bluez-users] Regarding GetInfo

[Yogesh Jagtap]

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Hello everyone,

How can I retrive values returned by GetInfo api?

Regards
Yogesh

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Re: [Bluez-users] Regarding GetInfo

[Yogesh Jagtap]

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Hello Everyone,
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?

Regards
Yogesh

On 10/16/07, Yogesh Jagtap <jagtapyb@gmail.com> wrote:
>
> Hello everyone,
>
> How can I retrive values returned by GetInfo api?
>
> Regards
> Yogesh
>

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Re: [Bluez-users] Regarding GetInfo

[Marcel Holtmann]

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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