[PD] sysex messages

[mario buoninfante]

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 at gmail.com <mailto:mario.buoninfante at 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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