From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <20060530140840.52436.qmail@web50504.mail.yahoo.com> Date: Tue, 30 May 2006 07:08:40 -0700 (PDT) From: Mahtab Hossain To: bluez-users@lists.sourceforge.net MIME-Version: 1.0 Subject: [Bluez-users] Transmit Power Level (TPL) Reply-To: BlueZ users List-Id: BlueZ users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: multipart/mixed; boundary="===============1980051024==" Sender: bluez-users-bounces@lists.sourceforge.net Errors-To: bluez-users-bounces@lists.sourceforge.net --===============1980051024== Content-Type: multipart/alternative; boundary="0-1012532341-1148998120=:52089" Content-Transfer-Encoding: 8bit --0-1012532341-1148998120=:52089 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Hi, I have been trying to work on the various signal strength values (RSSI, LQ & TPL) for quite sometime now. Though I am successful in getting RSSI & link quality (LQ) for my dongles (from both hcitool command & my own program), I always get Transmit Power level (TPL) as 0 - I have tested in various distances. My dongles are either ISSC or Broadcom-based (no CSR dongles) - all of them support "power-control" feature. And Marcel, I had also digged your code and saw that, you take a parameter for transmit power level calculation (the "type" field) in "hci_read_transmit_power_level" function and you set the parameter as: type = (argc>1) ? atoi(argv[1]) : 0; Since no argument is given, the type field is always 0. Does it have any significance? I have also seen that this type field is not required for RSSI or LQ calculation. Finally, I only see "Get_Link_Quality" and "Read_RSSI" in bluetooth specification 1.0.B - no mention of "Transmit Power Level" there. My dongles are bluetooth 1.2, so, is there a possibility that they didn't provide transmit_power_level status value similar to that previous specification. I think bluetooth specification 1.0.B is the free one available till now. If later versions are available, could anyone please provide me the link. Lastly, if anyone could get bluetooth transmit power level (TPL) values other than 0, please let me know (preferrably with the dongles and bluetooth versions used in the dongles). Thanks Mahtab --------------------------------- Be a chatter box. Enjoy free PC-to-PC calls with Yahoo! Messenger with Voice. --0-1012532341-1148998120=:52089 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Hi,

I have been trying to work on the various signal strength values (RSSI, LQ & TPL) for quite sometime now. Though I am successful in getting RSSI & link quality (LQ) for my dongles (from both hcitool command & my own program), I always get Transmit Power level (TPL) as 0 - I have tested in various distances.
My dongles are either ISSC or Broadcom-based (no CSR dongles) - all of them support "power-control" feature.

And Marcel, I had also digged your code and saw that, you take a parameter for transmit power level calculation (the "type" field) in "hci_read_transmit_power_level" function and you set the parameter as:
type = (argc>1) ? atoi(argv[1]) : 0;

Since no argument is given, the type field is always 0. Does it have any significance? I have also seen that this type field is not required for RSSI or LQ calculation.

Finally, I only see "Get_Link_Quality" and "Read_RSSI" in bluetooth specification 1.0.B - no mention of "Transmit Power Level" there. My dongles are bluetooth 1.2, so, is there a possibility that they didn't provide transmit_power_level status value similar to that previous specification.
I think bluetooth specification 1.0.B is the free one available till now. If later versions are available, could anyone please provide me the link.

Lastly, if anyone could get bluetooth transmit power level (TPL) values other than 0, please let me know (preferrably with the dongles and bluetooth versions used in the dongles).

Thanks
Mahtab

Be a chatter box. Enjoy free PC-to-PC calls with Yahoo! Messenger with Voice. --0-1012532341-1148998120=:52089-- --===============1980051024== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline --===============1980051024== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Bluez-users mailing list Bluez-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-users --===============1980051024==--