- Dec 09, 2008 I have been using a USB port to bring in data from my own circuit attached to the PC. So far I have always set the COM number manually. To do this I use the deivce manager to find the COM number. But it is obvious that if the device manager can find the COM number there must be a routine in. You mean you are using a USB to Serial converter and you.
- On a Layer 2 switch: Find out what device is doing the routing for this switch (you may have to look at the network documentation). Sometimes it is a 'Router on a Stick', where the Layer 2 VLANs are being trunked up to the router for the Layer 3 decisions.Log into the routing device, and issue the following command (where ipaddress is the ip address of the host you are trying to locate.
- I want to automatically find the COM port for a specific USB device. I use the VISA find resource function but I can't get the manufacturer's ID. VISA says the device doesn't have this information. The find resource function does narrow my search (and often finds the port depending on what other usb devices are connected).
Jul 04, 2011 Right click on the device and click on ‘Properties’. Click on ‘Port Settings’. Then click on ‘Advanced’. Once you’re in ‘Advanced Settings for COM10’ on the bottom you can see the ‘COM Port Number: COM10’. The result is a cell array with friendly names and COM number pairs for each connected USB-serial device that has a friendly name. Code posted below: Skey = 'HKEYLOCALMACHINE HARDWARE DEVICEMAP SERIALCOMM';% Find connected serial devices and clean up the output , list = dos ( 'REG QUERY ' Skey). How to identify com port? I'm trying to set up software on a new Windows Mobile phone/PDA. When I hook the phone up to the USB cable and then activate the appropriate set-up software I get a message that the software needs access to COM 3, but that another program appears to be using that port. Nov 06, 2012 It now determines what the serial port number is by finding the difference between the initial serial ports and the new set of serial ports. Because the Arduino has been plugged in, there will now be a new serial port on the computer which the Processing application will find. The portfind Processing Application Waiting for Arduino to be Plugged In.
How would I go about viewing a list of COM ports in use without the use of Device Manager?
I don't want to install any software either. Is there a possible way to do this through the command line?
Peter Mortensen7 Answers
In the command prompt use
mode
Used without parameters, mode displays all the controllable attributes of the CON (console) and the available COM devices (and LPT as well).
Accepts /? switch for basic help:
mode /?
In the command prompt use:
OR
In PowerShell:
OR
Hope this helps.
vembutechvembutechI know the question has been answered, but this is another method.
In command prompt, use:chgport
in windows Vista and up. Lists your ports and which device they are.
Using mode most of the time I don't see the devices that are not connected.
I prefer to use this solution with Python:
So I can see anything plugged in even if the connection is closed.
serial.tools.list_ports is from package pyserial.
wmic https://docs.microsoft.com/en-us/windows/desktop/wmisdk/wmic is a windows command line utility to get system information.
If your serial port is virtual created by some driver through USB connection, use this example to get details about these serial ports.
You can also run the following from cmd.exe prompt
And here is an open source utility to do the same and more:https://todbot.com/blog/2012/03/02/listcomports-windows-command-line-tool-for-usb-to-serial/
The snippet below lists serial ports into the $PORTS variable
PORTS=/c/Windows/System32/mode.com | grep Status.*COM | awk '{ print $4 }' | sed s/://
echo -n 'Programming (echoing) ports: 'for aa in $PORTS; do echo -n $aadoneecho '
protected by Community♦Feb 2 at 20:37
Serial Port Settings
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