From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Markowski Subject: Re: PTT with soundmodem Date: Mon, 2 Feb 2004 10:38:24 -0500 Sender: linux-hams-owner@vger.kernel.org Message-ID: <20040202153824.GA15819@strauss.udel.edu> References: <20040201215530.GA572@strauss.udel.edu> <20040201215530.GA572@strauss.udel.edu> <3.0.6.32.20040201220959.0079bd30@pop.telus.net> <1075724381.1263.19.camel@oh2bns.ampr.org> <20040201215530.GA572@strauss.udel.edu> <20040201215530.GA572@strauss.udel.edu> <3.0.6.32.20040201220959.0079bd30@pop.telus.net> <20040201215530.GA572@strauss.udel.edu> <20040201220920.GA18771@cloud.net.au> Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: <1075724381.1263.19.camel@oh2bns.ampr.org> <3.0.6.32.20040201220959.0079bd30@pop.telus.net> <20040201220920.GA18771@cloud.net.au> List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Linux Hams Thanks, guys, for the replies to my note. On Sun 01-Feb-04 at 1709 EST, Hamish Moffatt wrote: > > Is AX.25 working properly in 2.4.24? I was under the impression that it > was never reliable in 2.4, and fixes are going straight to 2.6. I don't really know. Though I'm certainly willing to a new kernel - and especially if any new soundcard drivers are included! (See below.) On Mon 02-Feb-04 at 109 EST, Mike Fenske wrote: > > Which version of soundmodem are you using and which interface for PTT?? I currently use the serial port for PTT (but will soon switch to parallel so I can have rig control on the serial). And I compiled soundmodem-0.7 from source. On Mon 02-Feb-04 at 719 EST, Tomi Manninen wrote: > On Sun, Feb 01, 2004 at 04:55:30PM -0500, Mike Markowski wrote: > > > sm[15891]: ioctl: SNDCTL_DSP_SYNC: Device or resource busy (16) > For some reason this now fails and then PTT is released immediately. > Unfortunately the only cause for the failure I can think of, is a > poorly written sound card driver (I could be wrong though -- what > is your card btw?). That might be the problem. I'm using a several-year-old HP Omnibook XE3 laptop from work. It has an ESS Maestro3 soundcard, which is labeled as Experimental in the kernel config sound menu. > You could try forcing the driver to half duplex (in the IO tab in > soundmodemconfig) and see if that fixes it. I gave it a try, and it keeps the PTT asserted long enough to trigger the rig now, but still just briefly and I get the same error. > Another remedy might be trying the ALSA driver. Ok, I'll go to the ALSA website and read up on it, since I've never played with that. I'm hoping I can stick with the laptop, but we'll see how it goes... Thanks for the help! Mike AB3AP