[PD] Patch for Akai EWI (was "Reading and writing binary files")

[Ingo]

Hi David,

> I looked at your code, and I think I understand it, more or less. But
> I couldn't see where you're sending the 6-byte NRPN message before and
> after the SysEx message. Isn't it necessary?

No! SysEx doesn't require any NRPN message to get enabled. I have no idea
what the Aria software is sending out but it is definitely not necessary.

There are a lot of strange things with the Garritan / Plogue software.

> I got this information from a web site created by someone who
> reverse-engineered the SysEx messages for the EWI USB:
> 
> http://www.ewiusb.com/
> 
> According to him, you have to send the '63 01 62 04 06 20' before each
> SysEx, and '63 01 62 04 06 10' after the last one. You're not doing
> that? I haven't tested any of this stuff yet, I'm a little paranoid
> about screwing up my EWI. I can probably recover just by pressing the
> reset button if something goes wrong, but I'd rather not take the
> chance.

I had double checked my information with that website. It turned out that
there are several things that are wrong in this article. I wrote the guy
from ewiusb.com an email and told him about the errors but never got any
answer. He never corrected anything either. It doesn't look like the site is
active anymore.

BTW, you cannot break anything by sending sysex messages to an instrument.
I am using this editor daily with no problem.

I don't know which reason you have to trust one guy more than any other one?

However I did discover an error in the patch this morning when I transferred
a modified version into my hardware machine. "Pitchbend down" doesn't get
restored correctly from the file. So there is a fixed version attached. It
also writes the 6th value of the shorter sysex strings into the file which
was ignored before. Just in case it would have any undocumented (ha, ha, ha)
meaning.

Ingo


> >> -----Ursprüngliche Nachricht-----
> >> Von: pd-list-bounces at iem.at [mailto:pd-list-bounces at iem.at] Im Auftrag
> von
> >> Ingo
> >> Gesendet: Dienstag, 8. März 2011 18:35
> >> An: 'David'; pd-list at iem.at
> >> Betreff: Re: [PD] Patch for Akai EWI (was "Reading and writing binary
> >> files")
> >>
> >> Hi David,
> >>
> >> here's a full EWI-USB editor.
> >> However, it only works one way! Pd -> EWI-USB. It cannot retrieve data
> >> from
> >> the EWI.
> >>
> >> If you want to save your data you should specify a path (marked with
> red
> >> "bangs") twice for loading and saving and you need to set the midi
> port.
> >> Nothing else to do.
> >>
> >> I have tested it with Linux (Ubuntu). Not sure if it works on any other
> >> OS.
> >>
> >> Hope it's useful for some people!
> >>
> >> Cheers
> >> Ingo
> >>
> >>
> >> > -----Ursprüngliche Nachricht-----
> >> > Von: pd-list-bounces at iem.at [mailto:pd-list-bounces at iem.at] Im
> Auftrag
> >> von
> >> > David
> >> > Gesendet: Dienstag, 8. März 2011 03:07
> >> > An: pd-list at iem.at; muranyia at gmail.com
> >> > Betreff: Re: [PD] Patch for Akai EWI (was "Reading and writing binary
> >> > files")
> >> >
> >> > Thanks. I'm not sure I understand what you mean when you say "you
> >> > don't really need sysex", though. I have to send a 6 byte NRPN
> >> > message, followed by a 14 byte SysEx message. I think I understand
> how
> >> > to send the NRPN message, but I'm still confused about the SysEx
> >> > message. Would I use [midiout] to do that? According to the help file
> >> > in PD, this object is still undocumented and is only supported on
> >> > Linux. Is that still true? And it only has two inlets, which I'm
> >> > guessing would be an arbitrary 1 byte value and a channel number, but
> >> > I'm not sure.
> >> >
> >> > Unfortunately, none of these messages are documented in the owner's
> >> > manual or on their web site, but someone has reverse-engineered the
> >> > messages and posted his findings here:
> >> >
> >> > http://www.ewiusb.com/sysex_page1
> >> > http://www.ewiusb.com/sysex_page2
> >> >
> >> > The whole stream (an NRPN, a 14 byte SysEx, the same NRPN again,
> >> > another 19 byte SysEx, and a final NRPN) would look like this, for
> >> > example:
> >> >
> >> > // sysex enable :
> >> > 63 01 62 04 06 20
> >> > // sysex message :
> >> > F0 47 7F 6D 00 00 06 40 40 40 40 08 7F F7
> >> > // sysex enable :
> >> > 63 01 62 04 06 20
> >> > // sysex message :
> >> > F0 F7 7F 6D 02 00 0B 00 00 40 20 02 00 00 7F 00 7C 7D F7
> >> > // sysex done :
> >> > 63 01 62 04 06 10
> >> >
> >> > David.
> >> >
> >> > > Message: 1
> >> > > Date: Sun, 6 Mar 2011 18:07:59 +0100
> >> > > From: Andr?s Mur?nyi <muranyia at gmail.com>
> >> > > Subject: Re: [PD] Patch for Akai EWI (was "Reading and writing
> binary
> >> > >        files")
> >> > > To: PD List <pd-list at iem.at>
> >> > > Message-ID:
> >> > >
>  <AANLkTimf2TztoeqGx38BLvs_Rphk5YQLi6NnFnB2Uu0j at mail.gmail.com>
> >> > > Content-Type: text/plain; charset="iso-8859-1"
> >> > >
> >> > > NRPNS are interestingly made up of CC messages so you don't really
> >> need
> >> > > sysex.
> >> > > Attached [nrpnout] (original version by David McCallum) and
> [nrpnout-
> >> > yamaha]
> >> > > where CC numbers are modified according to Yamaha specs. You may
> need
> >> to
> >> > > match two of the four CC numbers with your gear (the other two are
> >> > always
> >> > > the same), and check if your gear needs MSB and LSB address or just
> >> one
> >> > > "NRPN number".
> >> > >
> >> > > Andras
> >> >
> >> > _______________________________________________
> >> > Pd-list at iem.at mailing list
> >> > UNSUBSCRIBE and account-management ->
> >> > http://lists.puredata.info/listinfo/pd-list
> >
> >
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