[PD] Was there a change in how MIDI is transmitted ????

Martin Peach martinrp at vax2.concordia.ca
Tue Jun 22 20:01:28 CEST 2004


I know, I keep forgetting about it. If it had been called 'current status',
then it would make more sense...This link has a good algorithm for running
status:
http://www.borg.com/~jglatt/tech/midispec/run.htm
Martin

----- Original Message ----- 
From: "jim ruxton" <cinetron at passport.ca>
To: "Martin Peach" <martinrp at vax2.concordia.ca>; <pd-list at iem.at>
Sent: Tuesday, June 22, 2004 1:00 PM
Subject: Re: [PD] Was there a change in how MIDI is transmitted ????


> HI Martin, haven't talked to you for a while ..
> Yes I will eventually do this. Just that I have a number of different
> devices with different code ie. midi to pwm, midi to stepper, emg to
> midi , accelerometer to midi etc. etc. . Eventually I'll crack open all
> the boxes and reprogram the chips. I guess I didn't pay close enough
> attention to the midi spec :-( I was just surprised when they stopped
> working. For now I'll just send a note-on between transmissions as
> suggested by Cyrille. Bandwidth isn't a big issue on my next project.
> Jim
>
> >But Jim, can't you change your receiver to handle running status? It''s
part
> >of the MIDI spec after all...
> >You just need a variable to hold the last status byte received. When you
get
> >a data byte with no preceding status byte, use the running status.
> >Martin
> >
> >----- Original Message ----- 
> >From: "Jim Ruxton" <cinetron at passport.ca>
> >To: <msp at ucsd.edu>; <pd-list at iem.at>
> >Sent: Tuesday, June 22, 2004 1:54 AM
> >Subject: Re: [PD] Was there a change in how MIDI is transmitted ????
> >
> >
> >
> >
> >>Thanks Miller,
> >>
> >>I'd love to blame this on MSW but it works on version 0.34 in Windows
but
> >>not 0.37 in Linux. I guess I should try 0.37 in Windows to see if the
code
> >>has changed there as well.
> >>jim
> >>----- Original Message -----
> >>From: "Miller Puckette" <mpuckett at man104-1.ucsd.edu>
> >>To: <pd-list at iem.at>
> >>Sent: Monday, June 21, 2004 10:21 PM
> >>Subject: Re: [PD] Was there a change in how MIDI is transmitted ????
> >>
> >>
> >>
> >>
> >>>Here's a conjecture... maybe the MIDI driver (or the OS) has suddenly
> >>>decided to start filtering the extra bytes out.  That would be bad, but
> >>>not the first bad thing I've seen a MSW driver and/or OS do...
> >>>
> >>>Miller
> >>>
> >>>On Mon, Jun 21, 2004 at 10:40:57AM +0200, Frank Barknecht wrote:
> >>>
> >>>
> >>>>Hallo,
> >>>>jim ruxton hat gesagt: // jim ruxton wrote:
> >>>>
> >>>>
> >>>>
> >>>>>I've built a few devices that accept MIDI as a control signal and
> >>>>>they don't work with the latest version of PD. I'm not sure but it
> >>>>>looks to me like where a ctlout object used to send  Channel ,
> >>>>>Controller Number and Control Value  it is only sending channel
> >>>>>information if there is a channel change.
> >>>>>
> >>>>>
> >>>>Not here: ctlin is sending out all three numbers at every change of a
> >>>>controller value. Maybe there is something wrong with your patch, like
> >>>>hot and cold inlets messed up?
> >>>>
> >>>>Could you create a test patch that shows the behaviour you get?
> >>>>
> >>>>Ciao
> >>>>--
> >>>> Frank Barknecht                               _ ______footils.org__
> >>>>
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> >>
> >
> >
> >
> >
> >
>
>
>
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