Nucleo-F072RB USB

[bwissel]

Hello,

I am having trouble getting the USB peripheral recognized by the PC device manager.  In Cube I have the USB FS device checked, and the USB_DEVICE middleware set to virtual COM port.  Everything else is set to default.

The USB clock is set to 48MHz coming from the HSI48 source.

When the peripheral is connected to a PC (through a HUB) the device manager refreshes but the VCOM port does not show.

Thanks for the help.

Brian

[AScha.3]

Hi,

HSI as clk for USB might not be good enough.

Use HSE / crystal as source.

[bwissel]

I changed from HSI48 to the PLLCLK at 48MHz without success.  Here is the clock mapping for reference.

Thanks

[AScha.3]

How you set the gpio pins for USB port ?

should be :  GPIO_SPEED_FREQ_HIGH;

[Tesla DeLorean]

Check how you're wired up the USB connection to the F072. The ST-LINK one isn't connected to it.

[Karl Yamashita]

Upload your IOC file and also a schematic of your USB connector/breakout board connection to the Nucleo board pins.

[bwissel]

Here is my IOC file, I had the data pins swapped.  It is now showing up in the device tree as a USB controller but is failing the Device Descriptor Request (Code 43).

[bwissel]

I did notice that on the nucleo board I am using X3 is not installed, this looks like the source for the HSE clock.  That would explain why when I switch from HSI to HSE it still didn't work.