Dec 11, 2015 How to configure serial ports in Wine Windows compatibility layer. Access hardware COM ports from Windows application running within Linux. Setting up a serial port for VirtualBox is not easy, mainly because of many options on how to transfer data from the host to the guest. For transferring data from/to an attached. Easycap 4 Channel Usb Dvr Software Free Download. If you are running a Linux host and a Windows Guest - you would use '/dev/ttyS#' for the port/file path. Port Mode: Host Device. I'm writing an application to read/write to/from a serial port in Fedora14, and it works great when I run it as root. But when I run it as a normal user I'm unable to.
Serial HOWTO: Serial Port Devices /dev/ttyS2, etc. Common serial port names are /dev/ttyS0, /dev/ttyS1, etc. Then around the year 2000 came the USB bus with names like /dev/ttyUSB0 and /dev/ttyACM1 (for the ACM modem on the USB bus). Multiport serial card used somewhat differnt names (depending on the brand) such as /dev/ttyE5. Since DOS provided for 4 serial ports on the old ISA bus: COM1-COM4, or ttyS0-ttyS3 in Linux, most serial ports on the newer PCI bus used higher numbers such as ttyS4 or ttyS14 (prior to kernel 2.6.13). But since most PCs only came with one or two serial ports, ttyS0 and possibly ttyS1 (for the second port) the PCI bus can now use ttyS2 (kernel 2.6.15 on). All this permits one to have both ISA serial ports and PCI serial ports on the same PC with no name conflicts.
0-1 (or 0-3) are reserved for the old ISA bus (or the newer LPC bus) and 2-upward (or 4-upward or 14-upward) are used for PCI, where older schemes are shown in parentheses. It's not required to be this way but it often is. If you're using udev (which puts only the device you have on your computer into the /dev directory at boottime) then there's an easy way to change the device names by editing files in /etc/udev/. For example, to change the name of what the kernel detects as ttyS3 to what you want to name it: ttyS14, add a line similar to this to /etc/udev/udev.rules BUS=='pci' KERNEL=='ttyS3', NAME='ttyS14' On-board serial ports on motherboards which have both PCI and ISA slots are likely to still be ISA ports.
Even for all-PCI-slot motherboards, the serial ports are often not PCI. Instead, they are either ISA, on an internal ISA bus or on a LPC bus which is intended for slow legacy I/O devices: serial/parallel ports and floppy drives. Devices in Linux have major and minor numbers. The serial port ttySx (x=0,1,2, etc.) is major number 4.
You can see this (and the minor numbers too) by typing: 'ls -l ttyS*' in the /dev directory. To find the device names for various devices, see the 'devices' file in the kernel documentation. There formerly was a 'cua' name for each serial port and it behaved just a little differently. For example, ttyS2 would correspond to cua2. It was mainly used for modems. The cua major number was 5 and minor numbers started at 64.
You may still have the cua devices in your /dev directory but they are now deprecated. For details see Modem-HOWTO, section: cua Device Obsolete. For creating the old devices in the device directory see: Dos/Windows use the COM name while the messages from the serial driver use ttyS00, ttyS01, etc. Older serial drivers (2001?) used just tty00, tty01, etc. The tables below shows some examples of serial device names.
The IO addresses are the default addresses for the old ISA bus (not for the newer PCI and USB buses). Dos common IO USB-BUS ( ACM =>acm modem ) name name major minor address common name common name COM1 /dev/ttyS0 4, 64; 3F8 /dev/ttyUSB0 /dev/ttyACM0 COM2 /dev/ttyS1 4, 65; 2F8 /dev/ttyUSB1 /dev/ttyACM1 COM3 /dev/ttyS2 4, 66; 3E8 /dev/ttyUSB2 /dev/ttyACM2 COM4 /dev/ttyS3 4, 67; 2E8 /dev/ttyUSB3 /dev/ttyACM3 - /dev/ttyS4 4, 68; various For more info see the usb subdirectory in the kernel documentation directory for files: usb-serial, acm, etc. On some installations, two extra devices will be created, /dev/modem for your modem and /dev/mouse for a mouse. Both of these are symbolic links to the appropriate device in /dev.