midi constructor error

14 Dec 2018

Hello, I try to compile the USBMIDI hello_word example with the Dieter Graef's DISCO_F746NG_USBDevice library. I got this error: "Error: No default constructor exists for class "USBMIDI" in "main.cpp", Line: 5, Col: 11

If I put a NULL value in the "HW_Interface" param of the constructor, there is no error anymore, but the board is not recognized as a midi device by midi softwares. Any help much apreciated. Thanks