Hey. I’m trying to use USB Serial in a custom build hardware using mbed studio in a Windows 10. I’m compiling the Example [USBSerial_HelloWorld - main.cpp] for a NUCLEO-H743ZI. After I installed the Mbed Virtual Serial Port by turn off the digital signature, I still have the error: This device ca…

Ahoj, Mbed Virtual Serial Port or the Windows Serial Driver are for original Mbed board, I think. Use this page , your page is obsolete. When the connection of USB is same like the on-board USB on Nucleo kits, you not need a special driver, Windows 10 will assigns standart Microsoft driver by it i…

Thanks for your reply. That’s exactly the problem. When I plug the USB cable the COM port is not detected by the device manager. It is detected as USB but the device cannot start.

Ok, but I am confused now :slight_smile: , you wrote above … and also changing the COM port number in the device manager… Can you make a print screen of your device manager?

Sorry for not being so clear. Here it is. [devmanager]

Interesting. I not see ST-link in your com ports. Do you have it already installed ST-link drivers ? And maybe uninstall all not used drivers what you install before.

Hi @andresa , Have you been able to solve this problem? Reinstalling ST-Link drivers may help you solve this issue. Mbed Studio on Windows is installing ST drivers during installation process. You can install them again in case you deselected this option or uninstalled them. You can find installer …

Can't detect virtual serial port

Mbed Studio

andresa (André Sá) March 10, 2020, 1:45pm 5

Sorry for not being so clear. Here it is.

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Can't detect virtual serial port

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