From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [Bluez-users] What's the best way to go about device detection? From: Marcel Holtmann To: Rob Raper Cc: BlueZ Mailing List In-Reply-To: References: Content-Type: text/plain Message-Id: <1084738824.4184.47.camel@pegasus> Mime-Version: 1.0 Sender: bluez-users-admin@lists.sourceforge.net Errors-To: bluez-users-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Date: Sun, 16 May 2004 22:20:24 +0200 Hi Rob, > Thanks for your reply. I'll have a look into RSSI. Is it > possible to use RSSI for detection, but then use RFCOMM to do the actual > communications? Once "linked" to a server they don't ever need to talk to > multiple servers at the same time. It's just that other servers need to > determine signal strength in order to decide when to perform a hand off. this is what I said. The RSSI comes for free with an inquiry with RSSI command from the Bluetooth 1.2 specification. And while a connection is active you can retrieve it without any extra cost. Look at the hcitool info command and see how it finds the needed ACL handle of an existing connection. And btw check your devices that they really support inquiry while they maintain an open ACL connection. > Here's the block of code that I'm currently using to do a scan. The old > version which worked better was simply a verison of the "hcitool scan" > routine modified to connect and check singal strength. Sorry, but I won't read that code. It is too much nested and actually code that needs more than 80 chars in a row is way too complex. Regards Marcel ------------------------------------------------------- This SF.Net email is sponsored by: SourceForge.net Broadband Sign-up now for SourceForge Broadband and get the fastest 6.0/768 connection for only $19.95/mo for the first 3 months! http://ads.osdn.com/?ad_id=2562&alloc_id=6184&op=click _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users