xarolium Posted 8 hours ago Report Share Posted 8 hours ago Hi there,"USB MIDI 2x2 i 'm trying to build a very simple USB host to Midi converter with the USB_Midi_2x2 app. I have a Discover board MB997D, i uploaded the bootloader and the board respond correctly in MIOS studio, then i uploaded the USB_MIDI_2x2 hex file and the Discovery board is well recognize as "USB MIDI 2x2" in MIOS studio. Then i disconnect the micro usb cable and connect my keyboard (a Oxygen 49), i reset the Discovery board, then i tried top play some note on the keyboard but nothing happens, no data in MIDI OUT1 and the green led DOES NOT blink on the Discovery board. The oxygen 49 is powered by a external PSU. I made a custom USB cable that allows me to connect the +5V rail to a external PSU. Any idea what i'm doing wrong ? Do i have to compile the app with #undef MIOS32_DONT_USE_USB_HOST ? Any help will be much appreciated Quote Link to comment Share on other sites More sharing options...
Phatline Posted 5 hours ago Report Share Posted 5 hours ago (edited) done this? #undef MIOS32_DONT_USE_USB_HOST ? no just remove the line.... Edited 5 hours ago by Phatline Quote Link to comment Share on other sites More sharing options...
xarolium Posted 5 hours ago Author Report Share Posted 5 hours ago Thank you for your reply, PA9 is the VBUS_FS line on the discovery board. As i power my Keyboard with a external power it does not change anything. I tried to connect PA9 to +5V but still no midi message from my Oxygen49 Any other advice ? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.