Get COM port number of usb serial FTDI
I have a FTDI usb-serial and I am interested in the getting the COM port assigned to the device on
USB serial converter A. Is there a way I can list this information programatically (say cmd) to extract the COM port number that corresponds to the one at that location. I can view this information in the device manager properties, so there could be a way to get this information through a script I guess? I am certain the COM port I would connect to will be on the serial converter A.
I was looking up the registry entries for the usb device and the device I want to connect to goes to VCP0. to narrow down my question, whats the best way to get the COM number from query-ing
which gives me:
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM \Device\VCP0 REG_SZ COM9 \Device\VCP1 REG_SZ COM10
EDIT: I am trying to get the value of data for
\Device\VCP0 using this command, but I think I am not escaping backslashes correctly:
REG QUERY "HKLM:\HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM" /v "\\Device\\VCP0"
Here's one way to do it:
@Echo Off Set "CDev=VCP0" Set "RKey=HKLM\HARDWARE\DEVICEMAP\SERIALCOMM" Set "CNum=" For /F "Skip=1 Tokens=3" %%A In ( 'Reg Query "%RKey%" /V "\Device\%CDev%" 2^>Nul') Do Set CNum=%%A If Not Defined CNum Exit /B Rem Your commands below here Echo %CNum% Timeout 5 >Nul
You should only ever need to modify the device name on line
2and place any of your own commands beneath from the
Possible corrections for your straight query command are either:
Reg Query "HKLM\HARDWARE\DEVICEMAP\SERIALCOMM" /V "\Device\VCP0"
Reg Query "HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM" /V "\Device\VCP0"
There was no need to escape the backslashes in the device name, and a little confusion in root key syntax