sysex messages

[Jay Vaughan]

> I've started some basic work on the arduino, reading encoders, and some push buttons and led's.
> I can send sysex now too, but have a hard time to combine the sysex with incoming midi messages.

Cool!  BTW, you need to check and set running-status on the MIDI stream in order to combine incoming and outgoing sysex messages.  Its a thorny subject though because a lot of synth MIDI implementations have their own ideas about what to do with running status messages .. ymmv with the JD990.

> I already have a ton of issues that I need to solve.
> So some questions:
> I plan on using an SPI for the encoders and leds/push buttons. Is this the normal way how it's done? I checked the midibox sequencer on how it's done there and will probably copy the hardware. What clock speed should one read the pots/push buttons?
> Do I use an interrupt on the midi incoming signals?
> 

These decisions are entirely up to you, but it sounds like a sound choice for your architecture so far.


> Anyway, seems like it's going to take some time before it's working. So in the mean time I plan on using one of these behringer "knob" boxes. They seem to handle sysex. Anyone tried this?
> 

Seems to me that if you're sending sysex already, you're most of the way there .. so why not push to completion with your homebrew effort?

;
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Jay Vaughan