Hi Simon,

yes the message is received and understood by other devices, so at the end of the day it's not a problem, mine is more curiosity :D

btw I've got a little update, after chatting with another Pd user, I figured it out that the problem doesn't occur on Pd 0.48.0 and 0.48.1 . but it does occur on Pd 0.46.1, the version I was using when I discovered this.
so my suspect is that something changed in the code. I'll have a look at github. does anyone know anything about that>

cheers,
Mario

On 14/03/18 21:49, Simon Iten wrote:

hi there,

i have sent sysex with puredata for some years now, and i never had any problems, even with large chunks.

i have used attached abstraction to send sysex, maybe it helps?

midi IS a serial protocol, so it is perfectly valid to send one byte at a time at least over din midi. in fact i am doing that with arduinos all the time. (usb midi is a different beast)

do the “special” midiout noteon and noteoff messages work when a synthmodule or similar is connected?
On 14 Mar 2018, at 21:28, mario buoninfante <mario.buoninfante@gmail.com> wrote:
Hi Miller,

yap I'm using ALSA.

btw, I had a look at the source code (I want to clarify I'm not a C programmer :) ) and from what I found in x_midi.c and s_midi.c, it kind of make sense that [midiout] returns 1 byte at time.

it seems to me we're missing a way to detect outgoing sysex messages (maybe having a dedicated object could help), so there's no way to collect a sysex and send it out in one go (ie having an array to return). I apologize for my trivial description of the "problem", but this is what I think is causing this behaviour.

cheers,

Mario

On 13/03/18 04:37, Miller Puckette wrote:
Hi Mario -

Perhaps you said this in the previous message which I missed... are you
using ALSA MIDI system or OSS?

MIDI support has always been a problem in Pd... largely because I don't have
a lot of experience with it.

cheers
Miller

On Tue, Mar 13, 2018 at 12:04:00AM +0000, mario buoninfante wrote:
Hi,


I ran few more tests on Linux trying to understand what's going on with
[midiout] and sysex messages.

I discovered that it's not just about sysex. I'm monitoring MIDI from Pd
with /KMidimon /and /GMIDImonitor/, and I noticed that also sending Note On
messages with [midiout] seems to be in some way different then sending the
same message using [noteout].

when Note On is sent using [midiout], this will spit single bytes that are
recognized as single byte sysex messages by the MIDI monitors!!!!!

has anyone ever experienced the same?


cheers,

Mario
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