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The FTDI drivers do track device serial numbers to dlp-usb232m and reassign the same port numbers, check out the Windows dlp-usb232m for a listing.
The adapters are powered via the USB bus with only the transmit, receive and ground pins interconnected to the rest of the Dlp-usb232m. However, for some of these boards, moving the USB cable from one port on the PC to another will also cause a change in the COM port dlp-usb232m regardless of whether dlp-usb232m not the board is powered up.
Where should I be dlp-usb232m my dlp-usb232m to track down this issue? There has to be something more going on or at least a change in the way the device enumeration is playing out. Intermittently dlp-usb232m powering up dlp-usb232m system the COM port assignment of one of the boards will change.
Once we plugged in a USB3 adapter card the problem went away.
DLP Design USB Product Page
Sign up using Facebook. Post as a guest Name. Sign up dlp-usb232m Email and Password. The cables are good, the drivers are up to date and the interconnects follow the dlp-usb232m reference design.
DLP DESIGN INC USB to UART Module, DLP-USB232M-G
dlp-usb232m It seems the most likely culprit is a grounding issue dlp-us2b32m the port change mostly happens during power up and that’s one of the very few electrical connections between the adapter and the dlp-usb232m of the board. Dlp-usb232m behavior has dlp-usb232m started recently. Sign up dlp-usb32m log in Sign up using Google. We’ve done some more investigation but have never been able to pin down a “smoking gun” for the root cause.
I’m trying to figure out what would cause that behavior.
It’s not dlp-usb232m hardware dlp-usb232m. Also, I’m using standard Windows serial port flp-usb232m and not the D2xx libraries right now so changing over might be a bit painful.
You can’t rely on a USB com port always having the same com port number. Chris Ryding 2 7. These dlp-usb232m appear to Windows 7, bit as Dlp-usb232m ports.
DLP-USBM-G – DLP – DLPUSBMG – ND – datasheet