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ajargans · 2015-12-09

Posted on December 10, 2015 at 06:49I have generated code with STM32CubeMX which should enable VCP support for STM32F042, but USB still doesn't work. Until USB device is initialized in code, windows shows device as ''Unknown USB Device (Device Descr...

ajargans · 2015-12-24

Posted on December 24, 2015 at 13:26 I was missing 1.5k pull-up resistor. After adding it''Unknown USB Device (Device Descriptor Request Failed)'' error was gone. But now there is another problem. After adding pull-up resistor, program is now st...

ajargans · 2015-12-11

Posted on December 11, 2015 at 16:10 It's just the code generated by CubeMX: int main( void ) { HAL_Init(); SystemClock_Config(); MX_GPIO_Init(); MX_USB_DEVICE_Init(); while (1); } AndMX_USB_DEVICE_Init() looks like this: void...

ajargans · 2015-12-10

Posted on December 11, 2015 at 06:27I added 10 second delay after MX_USB_DEVICE_Init() but nothing changed. Device still doesn't show up.

ajargans · 2015-01-02

Posted on January 02, 2016 at 09:25Finally I managed to get it working, but only on USB 3.0 ports.When I'm connecting my device to USB 2.0 ports, on Win7 it shows DeviceFailedEnumeration but on Win10 it doesn't show device at all.

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STM32F042 USB VCP not working

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Re: STM32F042 USB VCP not working