Does the IDE access all COM ports on start up?

Community Suggestions for the Arduino Project
1

Using Arduino-022. We put it on a server and it seemed to try and touch a hundred serial ports. Is that the expected behaviour and can it be turned off? If we had tried that on a production system, it would have disrupted some port usage.

2

shelleycat:
Using Arduino-022. We put it on a server and it seemed to try and touch a hundred serial ports. Is that the expected behaviour and can it be turned off? If we had tried that on a production system, it would have disrupted some port usage.

I believe it is as the IDE must know what avalible serial ports are active so that it can fill in it's serial port selection menu. It has no way to be able to determine if a given attached serial port has a arduino attached to it or something else, so it has to scan for all active ports.

Lefty

3

Thanks. We will try using avrdude directly when we reload then.

4

I don't think it does anything other than try to open the port. That shouldnt cause disruption if the ports are already in use. The usual problem is that a pc with bt port may take some time to try to make radio contact with non-existing other ends of the ports.

5

That shouldnt cause disruption if the ports are already in use.

In our case I assure you it was more interesting than we had expected. Of course, that is exactly why we have a reference system.