putzlicht

Still unsolved. Time to take a look on the math? A first workaround for me is just always reading 513 bytes, no matter what packet.size tells me... And it seems...

Ok, after poking around in the library I found out that the problem is in the backend: https://github.com/tttapa/Control-Surface/blob/main/src/MIDI_Interfaces/USBMIDI/USBMIDI_Arduino_mbed.hpp For example, the Adafruit_TinyUSB_USBDeviceMIDIBackend checks whether the USB device is mounted before...

Very nice! I'm at work right now, but I'll check it tonight.

Hello Pieter, your changes are correct. The library branch does the same as my little fix in the backend. But the problem becomes even more delicate. What I haven't tried...