On 4/25/2019 7:05 AM, dskolnick@... [ui-view] wrote:
- Globalsat BU-353 (USB) and BU-355 (serial) mini-pucks available for USD $30
on Amazon - WORK
My Globalsat BU-353-S4 does indeed work. Interestingly *something* got
confused as the COM ports have moved.
You probably plugged it into a different USB port on the PC. The BU-353 uses
the Prolific USB<-->serial interface chip. The FTDI USB<-->serial chips each
have a unique serial number that allow OS drivers to recognize the same device
no matter what port it it plugged into.? By contrast, the Prolific driver
stupidly treats the same device as a new one if plugged into a different USB
port, and proceeds to assign it a different COM number.?? This applies both to
root ports directly on the PC, and to different ports on a USB hub.
You can force the COM number to be anything not currently in use by other devices.
In the Windows Device Manager, locate the driver under "Ports "COM and LPT".?
Double-click the entry, then click the tab for "Port Settings".? Finally click
the button for "Advanced". ? You will see a drop-down list box at the top of
the resulting dialog box for "COM Port Number:". ?? Pull down the list and
choose any COM number you want.? You may have to reboot before the new COM
number becomes active.
Note that for UIview, the COM number MUST be somewhere in the range of COM1 to
COM8.? (UIview's internal dialogs don't offer the choice of COM numbers above
COM8.)
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