[PD] sysex messages

Mario Buoninfante mario.buoninfante at gmail.com
Fri Feb 23 15:03:10 CET 2018

Hi Marco,

I just wanna point out that I haven't got issues with Pd, no problem at
all. I can easily work with Sysex in various way and of course also the way
you described. mine was more a let's call it curiosity. also because I
think that the possibility to directly send a list to [midiout], and let Pd
deal with parsing, would be a faster process.


2018-02-22 22:40 GMT+00:00 mario buoninfante <mario.buoninfante at gmail.com>:

> yap I'm sending sysex from Circuit. I'm using Components a Novation
> website that allows you to store patches and session from Circuit. and the
> way that Circuit sends these info is why sysex. so I'm just dumping data
> and monitoring.
> On 02/22/2018 10:37 PM, Alex wrote:
> Oh okay, I get it.
> I'm not sure. Are you sending SYSEX from your Circuit as well?
> On Thu, Feb 22, 2018 at 2:31 PM, mario buoninfante <
> mario.buoninfante at gmail.com> wrote:
>> yap, this makes sense. I imagined Gmidimonitor does that. but why is not
>> parsing midi from Pd?
>> sorry, maybe I'm just missing the point, but I'm really trying to get my
>> head around with that ;)
>> cheers
>> On 02/22/2018 10:29 PM, Christof Ressi wrote:
>>> don't confuse MIDI messages with the individual bytes which make up the
>>> message. Gmidimonitor parses the byte stream so it can tell you which
>>> messages it gets. [midiout] is only responsible for sending raw *bytes* to
>>> a MIDI device. it's your job to assemble your MIDI *messages*.
>>> Gesendet: Donnerstag, 22. Februar 2018 um 23:05 Uhr
>>> Von: "mario buoninfante" <mario.buoninfante at gmail.com>
>>> An: Alex <x37v.alex at gmail.com>
>>> Cc: pd-list at lists.iem.at
>>> Betreff: Re: [PD] sysex messages
>>> yap, I know that at the end of the day MIDI is dealing with 1 byte at
>>> time. I was wondering why there's a difference between 2 different piece of
>>> code that generates MIDI (Pd and Hardware synth).
>>> for example I just monitored (via USB) my Novation Circuit (a groovebox)
>>> and Gmidimonitor receives messages 81 bytes long. with Pd as I said is
>>> always 1 byte.
>>> now my question would be, how is this possible?
>>> I'm sure Circuit sends sysex 81 bytes long, so I know that this is
>>> correct, but still I don't know why Pd doesn't allow something like that.
>>>   cheers,
>>> Mario
>>>   On 02/22/2018 09:58 PM, Alex wrote:
>>> MIDI is a serial protocol, individual bits running down a single line,
>>> we now also have USB midi which is a little bit different than that but
>>> usually that is abstracted for you.The software monitor you're using likely
>>> groups these for you but in reality you simply have a stream of individual
>>> bits on the hardware line..
>>> PD's object let you do bytes at a time instead of individual bits :)
>>>   On Thu, Feb 22, 2018 at 1:47 PM, mario buoninfante <
>>> mario.buoninfante at gmail.com[mailto:mario.buoninfante at gmail.com]> wrote:
>>> Hi Alex,
>>>   thanks for your reply. I think that also using your abstraction Pd
>>> will spit out 1 byte per time (I didn't check it, but I assume that cause
>>> it's not an external in C).
>>> about MIDI if I'm not wrong, bytes are grouped in accord with the type
>>> of message, ie Note on/off and CC are 3 bytes messages, channel pressure
>>> and program change are 2 bytes, sysex have variable length and so on. and I
>>> presume they're sent out in group.
>>> in fact when I monitor MIDI messages coming for certain applications
>>> (I'm on Linux and I'm using Gmidimonitor) the console tells me the sysex
>>> size in bytes. so, with Pd the size is always 1 byte, but with other
>>> programming languages and softwares is variable and goes in accord with the
>>> sysex I generated.
>>>   cheers,
>>> Mario
>>> On 02/22/2018 09:34 PM, Alex wrote:
>>> I haven't tested in a while but I wrote an abstraction to take a list,
>>> wrap it in the sysex start and end and output it as individual bytes:
>>> https://github.com/x37v/pure_data[https://github.com/x37v/pure_data]
>>>   midi is a byte oriented protocol..
>>>   On Thu, Feb 22, 2018 at 1:24 PM, mario buoninfante <
>>> mario.buoninfante at gmail.com[mailto:mario.buoninfante at gmail.com]>
>>> wrote:Hi,
>>> do you guys know if there's a way to send a list of sysex messages (or 1
>>> complete message, let's say 8 bytes long) rather then 1 byte per time?
>>> if not, do you know if there's a particular reason why it's not possible?
>>> cheers,
>>> Mario
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