I'm almost sure that the physical data transfer in the USB cable doesn't depend on the baudrate setting. This setting is just a parameter that the USB device can use the way it wants.
In the case the device implements a physical UART, then the setting controls the UART baudrate.
In other cases it can be used for smth else. For instance, the Raspberry pi Pico interprets a predefined baudrate value as a command to switch to bootloader.
Btw: what is your actual Arduino board?
Le ven. 27 juin 2025 à 02:51, Jim Ruxton jim.ruxton@gmail.com a écrit :
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 antoine@metalu.net 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 adrcki@gmail.com
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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