So I noticed something when testing all my modules today, with the STMF4 core and 1 midi I/O connected, when an event is routed to the IIC ports, all the LEDs come on instead of just the one for the port in use. The data is going to the right port (and only that port) but all the LEDs come on regardless of the port assignment. Is this software bug?
Could it be that the other ports send a MIDI clock or something similar?
Best Regards, Thorsten.
ah, good call. I had the filter on for clock in midiox. That was it 