Thank a lot I 'will buy one or two ATEN UC-232A. Despite do you think I can use FT232A USB Uart ? I own it already ...
Xavier. -----Message d'origine----- De : Mark Carlson [*mailto:[EMAIL PROTECTED] <[EMAIL PROTECTED]>] Envoyi : mardi 12 fivrier 2008 00:56 @ : Xavier Millihs-Lacroix Cc : misc@openbsd.org Objet : Re: Serial port (RS232) on USB port On 2/10/08, Xavier Millihs-Lacroix <[EMAIL PROTECTED]> wrote: > Hello, > > I want add one or several serial / rs232 connectors on a OpenBSD box > (Soekris or standard PC) - without adding a PCI card - just converter. > I search compatibles products. When we buy product we don't know the chip. > > Do you have good experiences ? This is the one I use (ATEN UC-232A): *http://www.aten.com/USB-Converter.htm*<http://www.aten.com/USB-Converter.htm > I don't have a dmesg right now though. It works fine for basic things where you only use the txd and rxd lines. >From what I've been told, do not rely on the other lines to act properly (if the do anything at all) if you are using a generic USB->Serial converter. > I have an converter, here an excerpt dmesg and usbdevs : > > ---------------- > uftdi0 at uhub0 port 2 > uftdi0: FTDI FT232R USB UART, rev 2.00/6.00, addr 3 ucom0 at uftdi0 > portno 1 > ---------------- > # usbdevs -dv > Controller /dev/usb0: > addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), > Intel(0x8086), rev 1.00 > uhub0 > port 1 addr 2: low speed, power 100 mA, config 1, NetScroll(0x0035), > Genius(0x0458), rev 1.10 > uhidev0 > port 2 addr 3: full speed, power 90 mA, config 1, FT232R USB > UART(0x6001), FTDI(0x0403), rev 6.00 > uftdi0 > --------------------- > I think tJhe FT232R USB UART is the /dev/ttyU0 device. > But I can't talk witj it (in or out). > > # stty -f /dev/ttyU0 > ispeed 0 baud; ospeed 9600 baud; > lflags: echoe echoke echoctl > cflags: cs8 -parenb > > Any ideas ? > On another box I was using tip for receiving caracters. > > Xavier. > > I've only ever used minicom on OpenBSD for serial connections (to devices with a serial terminal.) If you want to see if your device is working, it may have an LED on it that blinks when you send a character. You can also do a serial loopback test, like this: *http://zone.ni.com/devzone/cda/tut/p/id/3450*<http://zone.ni.com/devzone/cda /tut/p/id/3450> Just short the txd and rxd pins, then transmit data from a program like minicom, the data you transmit will be echoed to the screen. -Mark C.
