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LP5562EVM: Cannot Load LP5562EVM Driver

Duncan McDonald87
Prodigy 90 points
Part Number: LP5562EVM

Windows 10 automatically selects usbser.sys when I plugin the LP5562EVM and refuses to load the INF file from TI: "The third-party INF does not contain digital signature information".

The application shows a status of "USB error 00".

How can I use the LP5562EVM application?

  • 0
    TI__Genius 14295 points
    Hi, Duncan,

    Would you try to modify the USB port mannualy for a certain COM like COM5?

    Thanks.
    Regards,
    Kenneth
  • 0 in reply to Kenneth Du
    Prodigy 90 points

    Hi Kenneth,

    Thanks, that worked!

    In case someone else has the same problem here is the procedure I used (windows 10 but should work in other versions): I first had to remove about 20 unused virtual com ports so that com5 was available. I use virtual com ports a lot and once assigned windows doesn't let go of them even if the device using the virtual com port is no longer connected. To remove the virtual com ports I added a system variable DEVMGR_SHOW_NONPRESENT_DEVICES and set it to 1. In Device Manager I set View to Show Hidden Devices. The unused com ports show up with dimmed names. One-by-one uninstall the dimmed com ports. Plug in the LP5562EVM and manually set its com port to 5. Now install the driver. Even though I still got the error message it did install and the application now works.

    Duncan