From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johan Hovold Subject: Re: USB to Serial converter code pl2303 Date: Wed, 19 Feb 2014 18:00:39 +0100 Message-ID: <20140219170039.GG24335@localhost> References: <1392688665.7323.32.camel@mange> <20140218090946.GA1954@localhost> <1392828260.3113.24.camel@mange> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-lb0-f174.google.com ([209.85.217.174]:51093 "EHLO mail-lb0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754139AbaBSRBJ (ORCPT ); Wed, 19 Feb 2014 12:01:09 -0500 Content-Disposition: inline In-Reply-To: <1392828260.3113.24.camel@mange> Sender: linux-serial-owner@vger.kernel.org List-Id: linux-serial@vger.kernel.org To: Magnus Cc: Johan Hovold , linux-serial@vger.kernel.org, linux-usb@vger.kernel.org On Wed, Feb 19, 2014 at 05:44:20PM +0100, Magnus wrote: > >[ Please make sure to CC the linux-usb list as well. ] > Sure Johan. [ And please try to avoid top-posting... ] > The brand of this USB-Serial converter is sold by or as > "Plexgear" or "Marquant". > > Absolutely no info on the adapter is provided in the package > other then a mini-cd saying its a "prolific" product. > > I tried to send initialization code "117" followed by > servo movement codes to it via gtkterm. > The only time the adapter responded was at 115200 Baud. > > I need an adapter that can handle 2400 Baud to talk to the > ft639/ede639 servo controller chip or possibly a pl2303 driver > that is improved. The pl2303-driver can handle 2400 baud, but not sure exactly what baud rates are available for a cloned/pirated pl2303 chip (if that is what you've got). 115200 baud should be supported, though. > I have looked at vscom, a very similar > looking adapter on all counts except shape. > This adapter uses a linux driver called "ftdi_sio" > from info i have read on the net. That driver also works at 2400 baud. > What im really looking for here is an usb to serial > adapter that works for 2400 Baud and not only 115200. > I guess ill have to buy a new one from somewhere, but im > missing the what and the where :) I only suggested using 115200 baud as a way to verify your setup. Once you do that you can try 2400. Good luck, Johan