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Questions Tags Users Badges Unanswered. It seems the most likely culprit is a grounding issue since dlp usb232m port change mostly happens during power up and that’s one of the very few electrical connections between the adapter and the rest of the board.
There has to be something more going on or at least a change in the way the device enumeration is playing out. Uab232m adapters appear to Windows 7, bit as Dlp usb232m ports.
We’ve done some more investigation but have dlp usb232m been able to pin down dlp usb232m “smoking gun” for the root cause. Chris Ryding 2 7. It’s not a hardware issue.
Post as a guest Name. I’m trying to figure out what would cause that behavior. The adapters are dlp usb232m via the USB bus with only the transmit, receive and ground pins interconnected to the rest of the PCB.
Also, I’m using standard Windows serial port functions and dlp usb232m the D2xx libraries right now ksb232m changing over might be a bit painful.
You can’t rely on a USB com port always having the same com port number. Windows arbitrarily assigns Usv232m port numbers whenever an FTDI FT part is connected, regardless of dlp usb232m or not it’s previously seen that particular individual device.
MarkU 6, 1 11 Sign up using Dlp usb232m and Password. This behavior has only started recently. Intermittently on powering up the system the COM port dllp of one of the boards will change. However, for some of dlp usb232m boards, moving the USB cable from one port on the PC to another will also cause a change in the COM port assignment regardless of whether or not the board is powered up.