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Date: Sat, 8 Apr 2017 10:18:34 +0300
From: Johan Hedberg <johan.hedberg@gmail.com>
To: Barry Byford <31baz66@gmail.com>
Cc: Bluez mailing list <linux-bluetooth@vger.kernel.org>
Subject: Re: Serial Port connection with DBus API
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Hi Barry,

On Fri, Apr 07, 2017, Barry Byford wrote:
> = bluetoothd: Invalid value for profile option Channel

Let's look at your code:

> >             'Channel': GLib.Variant('i', 1),

Yep, that's wrong. The expected D-Bus type for 'Channel' is UINT16,
which is 'q' and not 'i'.

> = bluetoothd: RFCOMM server failed for SerialPort: socket(STREAM,
> RFCOMM): Protocol not supported (93)

That usually means that your kernel is incorrectly configured and
lacking RFCOMM support.

Johan