X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Date: Fri, 29 Feb 2008 10:45:23 +0100 From: Corinna Vinschen To: cygwin@cygwin.com Subject: Re: Serial port using USB adaptor Message-ID: <20080229094523.GR9539@calimero.vinschen.de> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: <95455e980802281743x3651991av6d87d34b39106332@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <95455e980802281743x3651991av6d87d34b39106332@mail.gmail.com> User-Agent: Mutt/1.5.16 (2007-06-09) Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On Feb 29 12:43, hce wrote: > Hi, > > I have a linux serial port problem compiled by Cygwin on window, it > runs fine if it connects a 9-pin serial cable and the device name is > /dev/ttyS0 (it does not work with com1, I have to translate it to > /dev/ttyS0). The problem is when I run the program in a PC without a > physical 9-pin serial port on hardware: > > (1) If there is no USB Serial adaptor connected, it still opens > /dev/ttyS0 without any errors. Then, it sends data to that port, and > timeout (does not work). > > (2) If I plug a USB-Serial adaptor and change the device name to > /dev/ttyUSB0, it opens that port witout problem but cannot connect to > the serial device. /dev/ttyUSB0 works?!? It's no device name recognized by Cygwin, so I assume you created a file on the disk called /dev/ttyUSB0 when using it. My knowledge about serial I/O is rather clumsy, but isn't there a virtual COM port attached, or can't you attach a virtual COM port to your USB I/O? AFAIK, you should find something like, say, COM9, which would be available as /dev/com9 or /dev/ttyS8. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/