How to find a modem's com port number programmably if I know the name of the modem interface?

[paul_cardinale · Accepted solution]

Here it is in LV 2014

[2014spring]

Hi Paul,

Wow, your "old" stuff really shined a light on me. You got a lot of stuff there and I think I'm overwhelmed by the power of your code! I alreay saw my modem showing up there with the name and com port number all together...ha...I'll try to digest a little better and pull out the part that I really needed. Did you write all those get managementbase subvis, Paul? Anyway, thanks a bunch for sharing your old stuff! It's very helpful!

Best,

Spring

[paul_cardinale]

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@2014spring wrote:

Hi Paul,

Wow, your "old" stuff really shined a light on me. You got a lot of stuff there and I think I'm overwhelmed by the power of your code! I alreay saw my modem showing up there with the name and com port number all together...ha...I'll try to digest a little better and pull out the part that I really needed. Did you write all those get managementbase subvis, Paul? Anyway, thanks a bunch for sharing your old stuff! It's very helpful!

Best,

Spring

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I did write the management VIs, but I figured it out by looking at other peoples' code (don't remember who or when).

[2014spring]

Hi Paul, I'm facing a new problem now. I have two devices that all show as "USB Serial Port" in Device Manager. The only difference that I found is their hardware ids in the properties. I tried "Get_USB_List_and_Props PLUS.vi" with filter "Select From Win32-USBDevice". It returns devices with Hardware ids but no COM port numbers. How do I get both Hardware id and COM port number in LabVIEW?

[paul_cardinale]

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@2014spring wrote:

Hi Paul, I'm facing a new problem now. I have two devices that all show as "USB Serial Port" in Device Manager. The only difference that I found is their hardware ids in the properties. I tried "Get_USB_List_and_Props PLUS.vi" with filter "Select From Win32-USBDevice". It returns devices with Hardware ids but no COM port numbers. How do I get both Hardware id and COM port number in LabVIEW?

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Sorry, I don't know.  I've had a similar problem and tried many times (always failing) to find the relationship between a COM port number and an identifier (such as a USB path) to a particular piece of hardware.