Re: Pd-list Digest, Vol 243, Issue 20

Dan for the win! Thanks Dan it was indeed a problem with the Baud variable
being declared an int in the Arduino sketch. It would have been nice to get
a compiler warning in this case for a dummy like me.

To double-check, are you sure the problem is not in the Arduino sketch?
> Python exhibiting the same behavior tips to that IMO. A quick search yields
> a similar issue due to using an int for larger baud values:
>
>
> https://arduino.stackexchange.com/questions/67568/serial-port-fails-with-speeds-greater-than-19200
>
> > On Jun 27, 2025, at 2:51 AM, Jim Ruxton <[email protected]> wrote:
> >
> >
> > I'm not clear how this works. Because if I change the baud rate it
> definitely stops any communication between the laptop  and the Arduino so
> baud rate must have some meaning in this case. I also tried using a python
> program I wrote and got the same behaviour  of working up to 19200 then
> stopping so I don't think it's an issue with Pure Data. Maybe a cable issue?
> >>
> >> Note that Arduino is usually (or always?) connected through an USB
> device
> >> which emulates a serial device (hence the comport).
> >>
> >> In this case the baud rate has no meaning (the baud rate is only used by
> >> physical UARTs).
> >>
> >> Le jeu. 26 juin 2025 à 00:06, Antoine Rousseau <[email protected]
> <mailto:[email protected]>> a
> >> écrit :
> >>
> >> > With the latest comport 1.3 (available on Deken) you can set the baud
> >> > rate  up to 4000000, if your system allows it. See
> >> > https://git.iem.at/pd/comport
> >> >
> >> > Le mer. 25 juin 2025 à 22:53, Alexandros Drymonitis <[email protected]
> <mailto:[email protected]>> a
> >> > écrit :
> >> >
> >> >> How did you find such a limitation? You can use it with a 115,200
> baud
> >> >> rate just fine on any OS (including Linux).
> >> >>
> >> >> On 6/25/25 23:50, Jim Ruxton wrote:
> >> >> > I'm using the comport object to speak to an Arduino. I'm finding
> the
> >> >> > fastest baud rate I could use was 19200.  I'm on Linux. Would
> anyone
> >> >> > know if this is a limitation of the object in Linux or if there is
> >> >> > something else going on. I'd like to send data faster if possible.
>
>
>

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