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MIDI Bug?
Posted: Jun 12th, '16, 18:35
by Rowan
I have been trying to trigger my Nava today with a external MIDI device but I can't get it to work correctly.
What I have found happens is that the NAVA will trigger a sound only once when it receives the correct MIDI note, the unit need to be powered off and restarted for it to respond to a MIDI note signal again.
I'm using firmware version 1.018.
Has anyone else noticed this?
Re: MIDI Bug?
Posted: Jun 15th, '16, 06:57
by Rowan
Anyone?
I really want to be able to trigger my Nava with MIDI and currently I can not do it.
Re: MIDI Bug?
Posted: Jul 7th, '16, 20:33
by Rowan
I think I've worked out the problem....
The Nava doesn't recognise a Midi Note On Message With a Velocity of 0 as a Note Off.
i.e.
This MIDI Message should trigger the bass drum twice, but it only triggers it once because the Nava never "sees" a Note Off message.
Code: Select all
90 24 76 Chn# 1 Note On C-1 Vel:118
90 24 00 Chn# 1 Note Off C-1 (optimised)
90 24 76 Chn# 1 Note On C-1 Vel:118
90 24 00 Chn# 1 Note Off C-1 (optimized)
This MIDI message triggers the bass drum twice.
Code: Select all
90 24 66 Chn# 1 Note On C-1 Vel:102
80 24 40 Chn# 1 Note Off C-1 Vel:64
90 24 66 Chn# 1 Note On C-1 Vel:102
80 24 40 Chn# 1 Note Off C-1 Vel:64
The difference between the two is that the 2nd and 4th lines of the first group of messages sends the Note Off as Note On with 0 velocity, where as the second group's 2nd and 4th lines are proper Note Off messages.
The Yocto treats "Note On 0 velocity" correctly (as per the official MIDI spec) as Note Off where as the Nava doesn't.
Can this please be fixed?
Re: MIDI Bug?
Posted: Jul 8th, '16, 05:43
by Rowan
Problem solved!
I suggested the above to Vincent and he has fixed the issue in a new beta firmware.
I guess he'll post a new version in the near future.
Re: MIDI Bug?
Posted: Jul 8th, '16, 09:42
by AonFluX
Great work!
Re: MIDI Bug?
Posted: Aug 2nd, '16, 16:43
by beeb
Is the beta firmware already available? If yes where can I get it?
Cheers