![]() If I go into the advanced properties and try to assign a port number to it, as soon as I click OK I get a “Microsoft Management Console has encountered a problem and needs to close” message, along with the usual MS gibberish. However – here’s the problem – there is no COM port number assigned to the device, even though Windows apparently knows that it’s a USB Serial Port. The board then shows up properly in Windows Device Manager, and looking at its properties Windows says that it is working properly. During the driver installation, Windows gripes that the software that I’m trying to install hasn’t passed Windows Logo Testing, but it lets me install it anyway. When I connect the custom board to the PC, I can navigate to where the INF/CAT files are located in order to install the usbser.sys driver. Because Windows 7 gave me all kinds of grief in my early attempts, I’ve regressed back to XP temporarily because it’s a little more forgiving about driver installation than later versions of Windows. I’ve modified the Microchip USB CDC Abstract Control Model Serial Driver INF file with my own PID and generated a CAT file from the modified INF file. ![]() It’s configured as a CDC device (I want it to look like a serial COM port to the PC). I’m trying to use the USB on a PIC32MX795F512L in a custom design. ![]() No Windows COM Port Number Assigned to PIC32 USB Serial Port OK, I’ve got a weird one here. ![]()
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