Return-Path: Subject: Re: [Bluez-users] TPL is not changing From: Marcel Holtmann To: BlueZ Mailing List In-Reply-To: <20050130174730.3a78367f.j0006@stu.matsue-ct.jp> References: <20050130174730.3a78367f.j0006@stu.matsue-ct.jp> Content-Type: text/plain Message-Id: <1107095863.24890.0.camel@pegasus> Mime-Version: 1.0 Sender: bluez-users-admin@lists.sourceforge.net Errors-To: bluez-users-admin@lists.sourceforge.net Reply-To: bluez-users@lists.sourceforge.net List-Unsubscribe: , List-Id: BlueZ users List-Post: List-Help: List-Subscribe: , List-Archive: Date: Sun, 30 Jan 2005 15:37:43 +0100 Hi Kazuhiro, > I've installed bluez-libs-2.8-1 and bluez-utils-2.8-1 on our linux 2.4.27 systems with > HAGIWARA SYS-COM HNT-CFBT Bluetooth cards. > > I measured TPL on one computer and found that it was always 0 independently of the > distance between devices. > > The following is the result of actual measurement. > > [root@localhost root]# hcitool cc 00:90:02:XX:XX:XX > [root@localhost root]# hcitool tpl 00:90:02:XX:XX:XX > Current transmit power level: 0 > [root@localhost root]# hcitool rssi 00:90:02:XX:XX:XX > RSSI return value: -3 > [root@localhost root]# hcitool tpl 00:90:02:XX:XX:XX > Current transmit power level: 0 > [root@localhost root]# hcitool rssi 00:90:02:XX:XX:XX > RSSI return value: -13 > [root@localhost root]# hcitool dc 00:90:02:XX:XX:XX > > As you can see, RSSI is changing according to the distance between devices, but > TPL is not. > > I would like to know the reason of this phenomenon. this is maybe, because your card doesn't support it. What does "hciconfig -a" say? Regards Marcel ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users