Change COM Port and reconnect

[DarioScocco]

Hi,
I am using Ardity in an Arduino project. It works great. But sometimes when I connect the USB the Arduino COM port changes. So I have to change the COM form the editor. Is there a way to change the COM from the application itself using code and re-connect?
Thenk you!

[Daniel W]

Hello,

To do what you ask, I can think of a bit of a hack: you could call Destroy with the SerialController (not the GameObject but the MonoBehaviour). Then attach a new SerialController to the same GameObject using AddComponent. You can configure the newly created component before your function ends, and those values will be respected by the initialization code of the SerialController.

But, have you tried these options?

• Arduinos come with a "reset" button, have you tried pressing it instead of physically reconnecting it? Maybe it doesn't change the COM number in this way.
• Have you inquired into why the COM port used is different each time? Usually, reconnecting a device on the same USB port gives the same COM port. Anyway, have you gone to the "Device Manager" > Find your device > "Properties" and assign a fixed COM port there?

Regards.

[Daniel W]

Hello,
Is your issue solved?

[DarioScocco]

Hi Daniel Thank you for your advice. I have tried to assign a fixed COM port in device manager but there is no that option in WIN 10 nor WIN 7. I could not find it. Thank you Darío

…

On Sat, Mar 16, 2019 at 12:22 AM Daniel W ***@***.***> wrote: Hello, Is your issue solved? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#17 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AsNof62rc_ZR910f_8QHhwc04LTZq-afks5vXGNdgaJpZM4aeFLG> .

[tlondero]

I dont know if it's too late, but I've solved the problem creating a public methon inside the SerialController class:

public void ChangeCOM(string COM) {
OnDisable();
portName = COM;
OnEnable();
}

Maybe it's not the best way to solve the issue, but it works for me.

[WoutStandaert]

Hey guys, @tlondero 's solution is working, but @dwilches 's solution of creating the component from code doesn't. This is what I'm trying to do:

_serialController = gameObject.AddComponent<SerialController>();
_serialController.baudRate = 115200;
_serialController.portName = "COM7";

-> and anyway it will try to open COM3.

I think eventually there should be a proper way to create the SerialController class from code, because in my case for example I'm setting the COM port with a config file. For now, @tlondero 's solution is working but it's a bit hacky.