4 Replies Latest reply on Aug 20, 2019 5:58 AM by IzMa_4105896

    FX3: How to persist com port numbers for multiple CDC devices in a composite device

    IzMa_4105896

      I have a composite device with two CDC devices exposed as USB Serial Ports.  When this device is reset the COM port numbers often change.   I want then to stay the same.

       

      The driver used is: Cypress\Cypress USB-Serial Driver\DriverBinary\CDC_Driver\bin\win10\x64\CypressSerial.inf.  I have seen in other posts that for certain Cypress serial devices there is a "Enable Port Persist" option in the advanced settings for the COM port.  I don't see the same thing for my CDC devices. 

       

      How to "Enable Port Persist"?