Hi everyone,
I'm sorry I didn't respond earlier, I had was caught up in some boring stuff so I couldn't try any of this until now.
To answer little too late to latigid on, I'm using newer version of disco board: MB997D
I've updated the firmware to 2.27.15, and now I don't need to break links on board, it is working when powering it without debug usb host.
Now I've tried following:
- power through CN1 (2.1A USB charger), 5V connected to PA9 (J7 closed), usb midi keyboard connected through usb otg cable - board boots up, it works but I get hanging or missed notes.
- power through J2, J7 closed, usb midi kb through usb otg cable, same as above - missing and hanging notes
- J7 closed, no external supply (CN1 or J2), CN5 connected to pc in device mode, same usb midi keyboard connected to pc, mios32 midi device connected to midi keyboard on pc - everything working fine, no missing or hanging notes here.
Just a note: I am not using midibox motherboard (as it isn't shipped to my country, and I didn't get in touch with smashtv), I am just making needed connections with jumper wires directly on disco board.
Does anyone use midibox's usb midi host on regular basis, without having these hanging/missing notes? Perhaps my otg cable adapter doesn't transfer enough current to keyboard?
Thanks in advance,
Djordje