[PD] Pd and computer crash/freeze when using [comport], bug?

[Alexandros]

I can't really figure out how to download files from google drive, can 
you please share your files that need to be inspected with some other 
medium, like dropbox, or even bettern attach them to at email?

Alexandros

On 9/4/21 5:10 μ.μ., Nicklas Lundberg wrote:
> Hmm, it does not crash when [serial_print any] is disconnected. You 
> can quit normally.
>
> This may be relevant:
>
> Pd console reports no errors when communication fails when trying too 
> fast updates (with [serial_print any] disconnected less than 30 ms).
>
> I uploaded a similar setup (pd patch+arduino sketch) to the folder. 
> Here it does not crash even if updates are sent every 1 ms. And the pd 
> console starts to write error messages when the communication is too 
> fast (starts around 7 ms).
>
> Den fre 9 apr. 2021 kl 15:37 skrev Martin Peach <chakekatzil at gmail.com 
> <mailto:chakekatzil at gmail.com>>:
>
>     Does it still crash if you disconnect the [serial_print-any]
>     abstraction from [comport]?
>
>     Martin
>
>     On Fri, Apr 9, 2021 at 7:45 AM Nicklas Lundberg
>     <nlundberg at gmail.com <mailto:nlundberg at gmail.com>> wrote:
>     >>
>     >> On Fri, 2021-04-09 at 09:31 +0200, Nicklas Lundberg wrote:
>     >>
>     >> > [comport] is communicating with an Arduino Nano over USB to
>     control
>     >> > PWM pins.
>     >> >
>     >> > If [comport] is receiving messages faster than 50 ms Pd will
>     freeze,
>     >> > has to be force quitted, system gets sluggish, and the
>     computer has
>     >> > to be restarted.
>     >> >
>     >> > I can replicate it and it happens every time. I wonder if
>     this should
>     >> > be reported as a bug or if it is expected behavior in the
>     specific
>     >> > setting.
>     >>
>     >>
>     >> While not suggesting that I'd be able to help, can you provide some
>     >> more information, ideally providing a minimal patch that
>     triggers the
>     >> behaviour?
>     >>
>     >> Also what versions are involved: OS, Pd, comport?
>     >>
>     >> Roman
>     >
>     >
>     > Pd/Arduino codes and crash instructions in this folder:
>     >
>     >
>     https://drive.google.com/drive/folders/1oDxeFCc63tvdgP6CWguJmBdfekAAMOrQ?usp=sharing
>     <https://drive.google.com/drive/folders/1oDxeFCc63tvdgP6CWguJmBdfekAAMOrQ?usp=sharing>
>     >
>     > comport 1.1.1
>     > Pd-0.51-4
>     > MacOS Mojave 10.14.6
>     > MacBook Air 11" mid 2012
>     >
>     > to crash pd and computer:
>     > Upload sketch to Ardunio (Nano)
>     > Open comport serial communication
>     > activate dsp
>     > Set metro object to less than 50 ms
>     > Toggle metro on to crash
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