[SOLVED] Is there a g_dbus function to update the non cached property value?

Is there a g_dbus function to update the non cached property value?

I am working on a head unit project using a Raspberry Pi. The goal is to have a graphical user interface on the head unit that can control the phone when playing music.

I cant seem to get the phone to enable "Shuffle" or "Repeat".

I am using Bluez 5.45, and GLIB. I have basic control over play, stop, next.

Is there a similar function to g_dbus_proxy_set_cached_property()?

I have tried the function g_dbus_proxy_set_cached_property() but it only updates the cached value, the phone never receives the value set.

Solution

I found out how to set/get properties. I used the g_dbus_proxy_call_sync method.

g_dbus_proxy_call_sync (GDBusProxy *proxy,
                    const gchar *method_name,
                    GVariant *parameters,
                    GDBusCallFlags flags,
                    gint timeout_msec,
                    GCancellable *cancellable,
                    GError **error);

I needed to access the "org.freedesktop.DBUS.Properties" interface. I needed to use the "Set" method. It takes three paramaters.

Set(String interface_name, String property_name, A value)

interface_name - The interface the property is associated with
propertyName - The name of the property
value - The new value of the property (May be any valid DBUS type).

g_dbus_proxy_call_sync( myProxy, "org.freedesktop.DBus.Properties.Set", g_variant_new ("(ssv)", "org.bluez.MediaPlayer1", "Repeat", g_variant_new_string ("alltracks")), G_DBUS_CALL_FLAGS_NONE, // Flags -1, // timeout NULL, // cancellable &error // error );