From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Subject: Re: [Bluez-devel] 2. Re: Re: Re: Bluetooth SCO message sending (sco_send_frame) From: Marcel Holtmann To: bluez-devel@lists.sourceforge.net In-Reply-To: <4312AEBD.4090907@core.kaist.ac.kr> References: <4312AEBD.4090907@core.kaist.ac.kr> Content-Type: text/plain Message-Id: <1125922447.11955.24.camel@pegasus> Mime-Version: 1.0 Sender: bluez-devel-admin@lists.sourceforge.net Errors-To: bluez-devel-admin@lists.sourceforge.net Reply-To: bluez-devel@lists.sourceforge.net List-Unsubscribe: , List-Id: BlueZ development List-Post: List-Help: List-Subscribe: , List-Archive: Date: Mon, 05 Sep 2005 14:14:07 +0200 Hi, > In my case, there is some problem when I connect SCO over UART(h4). > When I sent data to h4 interface, h4 make frame and btsco sent that > frame to the SCO channel. > The frame size from h4 interface is varied periodically and somtimes > larger than MTU size so SCO channel drop several frames. > > Of course I changed the MTU size using "hciconfig scomtu" command but it > is not effective at all. this command is useless. > Now, I tested the problem using samsung module based on CSR bluecore > chipset. > However, there is no problem if I use SCO over USB because the frame > size from USB is always same & smaller than MTU. As I told you, the kernel will tell you the MTU size you have to use and then you must segment and reassembly in your code. Regards Marcel ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel