Date: Sat, 12 Feb 2005 16:30:07 -0500 From: "Marc Skarshinski" <mskar@atlllc.com> To: <freebsd-usb@freebsd.org> Subject: ucom/uplcom question Message-ID: <000201c5114a$064ba500$fc01320a@TERRAPIN>
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I am having timeout problems on 4.9-Stable using the ucom devices provided by the "Prolific Technology PL2303 serial adapter (ATEN/IOGEAR UC232A), rev 1.10/2.02" and also the "Prolific Technology Inc. USB-Serial Controller, rev 1.10/3.00" driver. I am trying to read/write to the port from a couple of shell scripts (one which cats the port, the other which issues printf statements to the port) I think this has to do with improper port settings but I cannot get the settings, issued stty commands, to persist across printfs to the port. Are there locking devices which can/should be associated with these devices, analogous to the cuala locking devices for a cuaa device? Also, the man page for ucom states: "The ucom driver shows a behavior like a tty", yet were this a standard serial port I would generally use a cuaa device not a tty. Is a ucom suitable for controlling a device which primarily is written (the device is a relay control box)? Any help/guesses would be appreciated. Thanks! Marc Skarshinski Atlantis Consulting, LLC
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