myFP2ESP WiFi was not designed to work as a serial usb controller (though that is possible).
The firmware for it was designed from scratch, and now has been ported over to myFocuserPro2
myFP2ESP controllers use the same protocol commands and responses as a myFocuserPro2
So if a myFP2ESP controller is running in LOCALSERIAL mode it will talk happily over USB with the myFocuserPro2 Windows app, myFocuserPro2 ASCOM driver andpresumably the INDI driver (as I do not have a LINUX system running INDI that I cannot verify but it should).
myFocuserPro2Linux is just a Linux version of the myFocuserPro2 Windows app designed to work over a serial port connection. It does not use TCPIP
myFP2ESP Windows app uses a TCPIP connection and can talk to myFP2ESP controller via TCPIP.
It is found at (Name will change soon to myFP2ESPLinux)
Actually, taking the existing INDI driver for myFocuserPro2, it should be able to be modified (clone and then rename to myFocuserPro2ESP?) to use TCPIP instead of serial to communicate with the myFP2ESP controller - most of the INDI code is already done, just change the serial code to use TCPIP instead. Happy to provide source code examples of Linkux TCPIP socket code talking to an myFP2ESP controller to anyone interested in coding a driver,