This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

MSP430F5521 - USB Virtual COM port in Windows

Other Parts Discussed in Thread: MSP430F5521


Does anyone know how to prevent the CDC USB drivers to assign a new COM port number when similar devices are plugged and then unplugged. For instance I have three identical devices built with MSP430F5521 and when I plug them in (one at the time), Windows will assign consecutive COM ports to them. That is not a problem when there are just three but when you have over 100 this becomes a nightmare and Windows just simply remembers them and deleting the unused ports becomes extremely cumbersome if there are a lot assigned as they can only be deleted one by one.

Trying to automate testing such devices is basically becoming an impossible task unless I use a static COM port assignment scenario.

So is there a way to tweak Windows to think I am plugging in the same device so it only assigns the same COM port all the time? Someone told me that some other chips from Silicon labs offering that capability.

Thanks a lot

**Attention** This is a public forum