List: linux-omap; ( subscribe / unsubscribe) Info: This is the mailing list for Linux on ARM based TI OMAP SoCs. For archive see http://marc.info/?l=linux-omap. For stuff like the Blaupunkt which is a Headset+Handsfree+Audio Sink+Serial Port it's basically 'turn everything off and on again until it works as it should'. Hope this is at least a bit useful. See 'Socket interface.

You can use a pty ('pseudo-teletype', where a serial port is a 'real teletype') for this. From one end, open /dev/ptyp5, and then attach your program to /dev/ttyp5; ttyp5 will act just like a serial port, but will send/receive everything it does via /dev/ptyp5. If you really need it to talk to a file called /dev/ttys2, then simply move your old /dev/ttys2 out of the way and make a symlink from ptyp5 to ttys2. Of course you can use some number other than ptyp5. Perhaps pick one with a high number to avoid duplicates, since all your login terminals will also be using ptys. Wikipedia has more about ptys. Canon Imagerunner Advance C5035 Driver on this page.

Complementing the @slonik's answer. You can test socat to create Virtual Serial Port doing the following procedure (tested on Ubuntu 12.04): Open a terminal (let's call it Terminal 0) and execute it: socat -d -d pty,raw,echo=0 pty,raw,echo=0 The code above returns: 2013/11/01 13:47:27 socat[2506] N PTY is /dev/pts/2 2013/11/01 13:47:27 socat[2506] N PTY is /dev/pts/3 2013/11/01 13:47:27 socat[2506] N starting data transfer loop with FDs [3,3] and [5,5] Open another terminal and write (Terminal 1): cat /dev/pts/3 Now back to Terminal 1 and you'll see the string 'Test'. There is also tty0tty which is a real null modem emulator for linux. It is a simple kernel module - a small source file. I don't know why it only got thumbs down on sourceforge, but it works well for me. The best thing about it is that is also emulates the hardware pins (RTC/CTS DSR/DTR).