Com порт virtualbox linux
User Manual for Release 6.0
- Preface
- First Steps
- Why is Virtualization Useful?
- Some Terminology
- Features Overview
- Supported Host Operating Systems
- Host CPU Requirements
- Starting a New VM for the First Time
- Capturing and Releasing Keyboard and Mouse
- Typing Special Characters
- Changing Removable Media
- Resizing the Machine’s Window
- Saving the State of the Machine
- Taking, Restoring, and Deleting Snapshots
- Snapshot Contents
- About the OVF Format
- Importing an Appliance in OVF Format
- Exporting an Appliance in OVF Format
- Exporting an Appliance to Oracle Cloud Infrastructure
- Importing an Instance from Oracle Cloud Infrastructure
- The Cloud Profile Manager
- Using the Soft Keyboard
- Creating a Custom Keyboard Layout
- Installing on Windows Hosts
- Prerequisites
- Performing the Installation
- Uninstallation
- Unattended Installation
- Public Properties
- Performing the Installation
- Uninstallation
- Unattended Installation
- Prerequisites
- The Oracle VM VirtualBox Kernel Modules
- Kernel Modules and UEFI Secure Boot
- Installing Oracle VM VirtualBox from a Debian or Ubuntu Package
- Using the Alternative Generic Installer (VirtualBox.run)
- Performing a Manual Installation
- Updating and Uninstalling Oracle VM VirtualBox
- Automatic Installation of Debian Packages
- Automatic Installation of RPM Packages
- Automatic Installation Options
- Performing the Installation
- The vboxuser Group
- Starting Oracle VM VirtualBox on Oracle Solaris
- Uninstallation
- Unattended Installation
- Configuring a Zone for Running Oracle VM VirtualBox
- Supported Guest Operating Systems
- Mac OS X Guests
- 64-bit Guests
- An Example of Unattended Guest Installation
- Basic Tab
- Advanced Tab
- Description Tab
- Disk Encryption Tab
- Motherboard Tab
- Processor Tab
- Acceleration Tab
- Screen Tab
- Remote Display Tab
- Recording Tab
- USB Settings
- Implementation Notes for Windows and Linux Hosts
- Video Modes in EFI
- Specifying Boot Arguments
- Introduction to Guest Additions
- Installing and Maintaining Guest Additions
- Guest Additions for Windows
- Installing the Windows Guest Additions
- Updating the Windows Guest Additions
- Unattended Installation
- Manual File Extraction
- Installing the Linux Guest Additions
- Graphics and Mouse Integration
- Updating the Linux Guest Additions
- Uninstalling the Linux Guest Additions
- Installing the Oracle Solaris Guest Additions
- Uninstalling the Oracle Solaris Guest Additions
- Updating the Oracle Solaris Guest Additions
- Manual Mounting
- Automatic Mounting
- Supported Formats
- Known Limitations
- Hardware 3D Acceleration (OpenGL and Direct3D 8/9)
- Hardware 2D Video Acceleration for Windows Guests
- Using Guest Properties to Wait on VM Events
- Using the Guest Control File Manager
- Memory Ballooning
- Page Fusion
- Hard Disk Controllers
- Disk Image Files (VDI, VMDK, VHD, HDD)
- The Virtual Media Manager
- Special Image Write Modes
- Differencing Images
- Cloning Disk Images
- Host Input/Output Caching
- Limiting Bandwidth for Disk Images
- CD/DVD Support
- iSCSI Servers
- vboximg-mount: A Utility for FUSE Mounting a Virtual Disk Image
- Viewing Detailed Information About a Virtual Disk Image
- Mounting a Virtual Disk Image
- Virtual Networking Hardware
- Introduction to Networking Modes
- Network Address Translation (NAT)
- Configuring Port Forwarding with NAT
- PXE Booting with NAT
- NAT Limitations
- Introduction
- Commands Overview
- General Options
- VBoxManage list
- VBoxManage showvminfo
- VBoxManage registervm/unregistervm
- VBoxManage createvm
- VBoxManage modifyvm
- General Settings
- Networking Settings
- NAT Networking Settings
- Import from OVF
- Import from Oracle Cloud Infrastructure
- Export to OVF
- Export to Oracle Cloud Infrastructure
- Synopsis
- Description
- unattended detect
- unattended install
- Synopsis
- Description
- General Command Operand
- Take a Snapshot of a Virtual Machine
- Delete a Snapshot
- Restore a Snapshot
- Restore the Current Snapshot
- Change the Name or Description of an Existing Snapshot
- List the Snapshots
- Show Information About a Snapshot’s Settings
- Synopsis
- Description
- Command Operand and Options
- Examples
- See Also
- Synopsis
- Description
- extpack install
- extpack uninstall
- extpack cleanup
- Synopsis
- Description
- Common options
- dhcpserver add
- dhcpserver modify
- dhcpserver remove
- dhcpserver restart
- dhcpserver findlease
- Common DHCP Options:
- Synopsis
- Description
- Common options
- debugvm dumpvmcore
- debugvm info
- debugvm injectnmi
- debugvm log
- debugvm logdest
- debugvm logflags
- debugvm osdetect
- debugvm osinfo
- debugvm osdmesg
- debugvm getregisters
- debugvm setregisters
- debugvm show
- debugvm stack
- debugvm statistics
- Synopsis
- Description
- Common options
- cloudprofile add
- cloudprofile show
- cloudprofile update
- cloudprofile delete
- Synopsis
- Description
- Common options
- cloud list instances
- cloud list images
- Synopsis
- Description
- Common options
- cloud instance create
- cloud instance info
- cloud instance termination
- cloud instance start
- cloud instance pause
- Synopsis
- Description
- Common options
- cloud image create
- cloud image info
- cloud image delete
- cloud image import
- cloud image export
3.10. Serial Ports
Oracle VM VirtualBox supports the use of virtual serial ports in a virtual machine.
Ever since the original IBM PC, personal computers have been equipped with one or two serial ports, also called COM ports by DOS and Windows. Serial ports were commonly used with modems, and some computer mice used to be connected to serial ports before USB became commonplace.
While serial ports are no longer as common as they used to be, there are still some important uses left for them. For example, serial ports can be used to set up a primitive network over a null-modem cable, in case Ethernet is not available. Also, serial ports are indispensable for system programmers needing to do kernel debugging, since kernel debugging software usually interacts with developers over a serial port. With virtual serial ports, system programmers can do kernel debugging on a virtual machine instead of needing a real computer to connect to.
If a virtual serial port is enabled, the guest OS sees a standard 16550A compatible UART device. Other UART types can be configured using the VBoxManage modifyvm command. Both receiving and transmitting data is supported. How this virtual serial port is then connected to the host is configurable, and the details depend on your host OS.
You can use either the Settings tabs or the VBoxManage command to set up virtual serial ports. For the latter, see Section 7.8, “VBoxManage modifyvm” for information on the —uart , —uartmode and —uarttype options.
You can configure up to four virtual serial ports per virtual machine. For each device, you must set the following:
- Port Number: This determines the serial port that the virtual machine should see. For best results, use the traditional values as follows:
- COM1: I/O base 0x3F8, IRQ 4
- COM2: I/O base 0x2F8, IRQ 3
- COM3: I/O base 0x3E8, IRQ 4
- COM4: I/O base 0x2E8, IRQ 3
You can also configure a user-defined serial port. Enter an I/O base address and interrupt (IRQ).
- Disconnected: The guest will see the device, but it will behave as if no cable had been connected to it.
- Host Device: Connects the virtual serial port to a physical serial port on your host. On a Windows host, this will be a name like COM1 . On Linux or Oracle Solaris hosts, it will be a device node like /dev/ttyS0 . Oracle VM VirtualBox will then simply redirect all data received from and sent to the virtual serial port to the physical device.
- Host Pipe: Configure Oracle VM VirtualBox to connect the virtual serial port to a software pipe on the host. This depends on your host OS, as follows:
- On a Windows host, data will be sent and received through a named pipe. The pipe name must be in the format \\.\pipe\ name where name should identify the virtual machine but may be freely chosen.
- On a Mac, Linux, or Oracle Solaris host, a local domain socket is used instead. The socket filename must be chosen such that the user running Oracle VM VirtualBox has sufficient privileges to create and write to it. The /tmp directory is often a good candidate. On Linux there are various tools which can connect to a local domain socket or create one in server mode. The most flexible tool is socat and is available as part of many distributions.
In this case, you can configure whether Oracle VM VirtualBox should create the named pipe, or the local domain socket non-Windows hosts, itself or whether Oracle VM VirtualBox should assume that the pipe or socket exists already. With the VBoxManage command-line options, this is referred to as server mode or client mode, respectively.
For a direct connection between two virtual machines, corresponding to a null-modem cable, simply configure one VM to create a pipe or socket and another to attach to it.
- TCP Server: Deselect the Connect to Existing Pipe/Socket check box and specify the port number in the Path/Address field. This is typically 23 or 2023. Note that on UNIX-like systems you will have to use a port a number greater than 1024 for regular users. The client can use software such as PuTTY or the telnet command line tool to access the TCP Server.
- TCP Client: To create a virtual null-modem cable over the Internet or LAN, the other side can connect using TCP by specifying hostname : port in the Path/Address field. The TCP socket will act in client mode if you select the Connect to Existing Pipe/Socket check box.
Up to four serial ports can be configured per virtual machine, but you can pick any port numbers out of the above. However, serial ports cannot reliably share interrupts. If both ports are to be used at the same time, they must use different interrupt levels, for example COM1 and COM2, but not COM1 and COM3.
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Connection through COM port between host and guest in VirtualBox
I am running a certain application on Ubuntu (16.04) in VirtualBox, while VirtualBox is running on Windows 10 (host). In Simulink (running on my host), I have a simulation where at the last stage, I gather some values. I want to output these values over a serial connection at a certain baud rate to the application that is running on VirtualBox (i.e. QGroundControl station). So first part of my question — VirtualBox: In VirtualBox, I enabled the serial port and chose a host pipe in port mode, as shown in:
In the picture you can see that COM6 is used, but I used COM1 and COM2 instead. I got the same result for both. I am not that used to working with VirtualBox, so I don’t really know if this means I have now created a connection between my host and guest or if I still need to activate or connect them in any way? Second part of my question — Simulink: In Simulink, I want to output my values using a serial send (because I think that is the easiest way? If there is a better way, please tell me), but if I want to select a port, no ports are shown, as you can see in: What do I need to do/change in VirtualBox/Simulink to get my COM port to show up? Last part — MATLAB: Because in Simulink, no COM ports were shown. I wanted to check for available ports in MATLAB, but apparently all my ports are closed:>> info = instrhwinfo('serial') info = HardwareInfo with properties: AvailableSerialPorts: JarFileVersion: 'Version 3.8' ObjectConstructorName: SerialPorts: Access to your hardware may be provided by a support package. Go to the Support Package Installer to learn more.Error using serial/fopen
Open failed: Port: COM1 is not available. No ports are available.
Use INSTRFIND to determine if other instrument objects are connected to the requested device.
Using «INSTRFIND» shows that all ports are closed.
- Guest Additions for Windows
In the picture you can see that COM6 is used, but I used COM1 and COM2 instead. I got the same result for both. I am not that used to working with VirtualBox, so I don’t really know if this means I have now created a connection between my host and guest or if I still need to activate or connect them in any way? Second part of my question — Simulink: In Simulink, I want to output my values using a serial send (because I think that is the easiest way? If there is a better way, please tell me), but if I want to select a port, no ports are shown, as you can see in: 
What do I need to do/change in VirtualBox/Simulink to get my COM port to show up? Last part — MATLAB: Because in Simulink, no COM ports were shown. I wanted to check for available ports in MATLAB, but apparently all my ports are closed: