stm32f4 USB HID not detected by pc

[YONGAN ZHANG]

Posted on August 07, 2017 at 20:59

I am testing out the USB HID (otg fs) feature of my board with stm32f407vet6 mcu. I used stm32cubemx to configure it and i didn't add anything to the while loop in main c, just seeing if the device can be detected or not. However, after I uploaded  the code  and resetted the board, no response was given and I could not find any relevant port in the device manager of my pc.  The attached are the schematic for the usb_slave port and configuration in stm32cubemx.

https://community.st.com/tags/♯/?tags=usb%20otg

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[YONGAN ZHANG]

Posted on August 07, 2017 at 21:00

[Tilen MAJERLE]

Posted on August 08, 2017 at 13:55

Hello

sirsargras

‌,

Can you show us your clock configuration? Clock is in most cases main problem why USB does not work.

Best regards,

Tilen

[Tilen MAJERLE]

Posted on August 08, 2017 at 14:10

Hello,

please share with us .ioc file from CubeMX.

Best regards,

Tilen

[YONGAN ZHANG]

Posted on August 08, 2017 at 14:06

Hi

Majerle.Tilen

This is my clocking configuration; the clocking for usb is 48Mhz I think.

Best regards,

Yongan

[YONGAN ZHANG]

Posted on August 08, 2017 at 14:17

Hi,

The .ioc file is updated in the original post. Thank you!

Best regards,

Yongan

________________ Attachments : usb_otg_device.ioc.zip : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006HyWq&d=%2Fa%2F0X0000000b95%2F_hBHuK7A2OvGlDsCcidNGO58QM8XmqNbo.sSsRdkId4&asPdf=false

[YONGAN ZHANG]

Posted on August 10, 2017 at 02:34

Hi,

The problem is solved. It turns out that in the schematic I pulled up the PA12(D+) pin to make the host device recognize the board as a full speed device. However, it is not necessary and is wrong. I only need to connect PA12 directly to the D+ in usb connector and it works fine.

Best regards,

Yongan