From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: "Dave Sweetser" To: Date: Tue, 28 Nov 2006 11:09:55 -0700 Message-ID: <001901c71318$6913da00$0600a8c0@PC581820463305> MIME-Version: 1.0 Cc: Vicky Sweetser , Jay Johannes , Les Hammer Subject: [Bluez-devel] Question about BlueZ and RFCOMM Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net Hi, I have a question about using RFCOMM on BlueZ. Here is our system: Linux system with <-----over the air-------> CSR BC03-MM chip and CSR-based USB dongle the STMicroelectronics STR710 ARM Microprocessor ("micro") We want to use the BlueZ RFCOMM library. On the microprocessor side, I'm using the serial port of the CSR Bluetooth chip so I am able to monitor the serial data stream between the CSR Bluetooth chip and the microprocessor ("micro"). Most of the RFCOMM communication works fine. On the micro side, I observe that the parameter negotiation happens OK and the RFCOMM connection is established. However, the data I try to send from the Linux system is never received by the micro. What happens instead is that the micro receives these commands from the Bluetooth chip (these are in CSR's format): RFC_CONTROL_IND RFC_RELEASE_IND RFC_CLOSE_IND DM_ACL_CLOSED_IND I also observe that the Linux system, while connection is being established, is sending flow control messages (3, in my case) to the micro. These are with a credit field of 4, 5 and 6 for the 3 flow control messages. Now to my question: Does the micro need to respond to these flow control messages in some manner to maintain the RFCOMM connection? Currently the micro doesn't respond to the flow control messages. If it is OK for the micro to not respond to the flow control messages, can someone help me understand what else might be causing the RFCOMM data to not be sent from the Linxu system and what might be causing the RFCOMM connection to be closed down? Thank you very much for your help! Please let me know if I can provide additional information. Dave Sweetser P.S. I'm assuming my problem is independent of the version of Linux and also independent of the version of BlueZ (which is the latest) -- if you need this information, however, just let me know. ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel