I often work with multiple processors at the same time, typically when developing an I2C-enabled application.  With two or more processors connected via USB, it becomes hard to figure out which comm port number goes with which USB cable to which processor, especially when dealing with Teensy 3.x processors (they seem to produce multiple port numbers, like 'USB on port xxx' and 'Teensy 3.5 at usb:10000/0/0/2/5/E' - not helpful).

You would think that the way to handle this would be to disconnect all but one USB cable, close and reopen the list of available comm ports, and voila! just one port in the available list - NOT!!  All the ports are still shown on the list, and there doesn't seem to be any way to get the port list to refresh, short of closing all my open VS2022 windows and starting over.

The device manager DOES seem to refresh properly, but even after confirming that inactive comm ports have been removed from the 'Ports' list in device manager, VS still refuses to update.

I haven't been able to come up with a workaround, other than closing and re-opening all VS windows - a real PITA.

Any suggestions?

TIA,

Frank

Tim@Visual Micro wrote on Jan 23^rd, 2022 at 2:08am:


Tim,

I don't have a clue - except the Device Mgr seems to do a decent job of keeping up with changes, but VS2022 doesn't.  A method of applying a 2' x 4' to VS2022's noggin to make it wake up and refresh that list would really be appreciated

Tim@Visual Micro wrote on Jan 23^rd, 2022 at 2:23am:



No, it doesn't, and that is the whole problem.  It won't disappear unless I close and re-open the VS2022 solution

Tim,

Thanks for taking the time to look at this. I have attached a screenshot containing all four of the items you asked for.

As you asked, I set both 'Friendly' options to FALSE.  When I first bring up the IDE with no boards attached, the only ports shown are known 'other' ports. When I first plug in a single board, as shown

However, when I subsequently unplug that board, the list entry remains (forever AFACT).  The only way to get rid of it is to close and then re-open the IDE, as before.  Same thing with both boards - once on the list, they stay on the list until the IDE is closed/re-launched.

Frank

Teensy 3.5

Windows 10

VS2022

Tim,

Wonderful! Thanks!

Frank

I installed the newest version, and it seems to be working perfectly with respect to adding/removing Teensy boards from the drop-down menu. Here are some screenshots where I had 0, 1, 2, and then back to one Teensy attached via USB.  The  dual entries (on just says 'USB' and the other one has a numeric code) are expected and normal - either one can be selected with the same result.