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F446ZE CDC Serial demo issue with Windows 7/64

Bill Dempsey
Senior

‎2019-01-03 02:49 PM

Hi

I have the F446ZE Nucleo board and am using the latest ST supplied demo code from mbed.com to use the CDC as a serial port.

The code from mbed compiles without issue and downloads to the F446ZE. At that point Windows attempts to load the CDC driver when I connect the device USB but stops and then reports the drivers for this device are not loaded.

I used the VCP driver version 1.5.0 for Win 64 which installed no issue.

Kind of stuck on what to look for next? It seems as though the USB side on the F446ZE is misreporting its vendor/product ID so Windows does not know which CDC driver to load.

Any hints on what might be happening?

Thank you

Bill

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1 REPLY 1
Markus Rudolf
Associate III

‎2019-01-04 07:10 AM

There is a few posts stating that maybe the initial stack size is not large enough.

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