I've been trying to connect a Nokia LD-1W Bluetooth GPS unit to an N770
programmatically. The manual method on the wiki (hcitool scan + rfcomm
bind <dev> <bda>) works fine, but I haven't been able to get anywhere with
the btcond D-BUS interface linked from the wiki page. I've got no real
experience of using D-BUS, which may well be part of the problem, but I've
tried lots of different things now and none of them are working.
I started off with the basic example program which just connects to the
session bus, lists the services available, then exits. That works fine
with both session and system buses. I then tried to modify it slightly to
obtain a proxy for the "com.nokia.btcond" service, which didn't work until
I discovered you had to connect to the system rather than the session bus.
Once I'd got the proxy, I tried to call the rfcomm_bind method as
suggested in the wiki. However, all I get back is an error saying that
this method doesn't exist on the com.nokia.btcond.request interface.
Calling any of the other methods results in the error
"com.nokia.btcond.invalid_dev", which is supposed to indicate an invalid
BDA from what I can tell, although the address I'm using is definitely
correct.
Can anyone help me out here? As I said, I have no previous experience with
D-BUS programming, so I may well be doing something very wrong and just
haven't noticed yet. I'm using the Glib bindings for D-BUS since that was
what the example code used. If anyone has actually done this already I'd
be very interested to hear how you did it.
Andrew
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