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MRAFI.376
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since ‎2019-10-22
‎2023-06-14

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I'm using STM32L073RZ on my own board, and I am trying to program USB device (I tried virtual COM and HID, separately). But after plugging into PC it is detected (after a while) with "Unknown device (device descriptor request failed)" error in windows 1

2019-10-22
Electrically (PCB):I think that PCB is not an error here - I just have D+ and D- short tracks from the connector to the uC and that's all.I have a pull-up 1.5k (I tried with and without it), but it is not even needed in STM32. I have check connection...
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