About KKado.1

KKado.1 · 2021-03-04

Dear Customer SupportI'm using the USB CDC class (Virtual COM Port) on STM32H7.When I unplug and plug the USB cable during comport communication, occasionally, the device manager display shows "Unknown USB device (device descriptor request failed)".I...

KKado.1 · 2020-09-14

HelloI'm using the USB CDC class on my STM32H7.Currently, I am using ST's VID (0x0483) and PID (0x5740).I have four questions.1.Can I use ST's VID and PID in our final product version?2.If so, can I redistribute ST's Virtual COM Port driver to our cu...

KKado.1 · 2020-08-23

I want to implement USB OTG on my own STM32H7 board.Can I get an example of the firmware source code?

KKado.1 · 2021-03-04

Dear Ons KOOLI:Thank you for your quick reply.I attach two .ioc files.I have added a USB CDC class to an existing project.(A) is the .ioc file of the existing project, and (B) is the one with USB function added to it.I generated the source code in th...

KKado.1 · 2020-09-14

Dear Pavel A,Thank you for your quick reply.At first I thought so too.However, it seems that a VCP driver is needed for Windows 7 and Windows 8.1.Actualiy, it didn't work on my Windows 7 PC without the VCP driver.Best Regards,

KKado.1 · 2020-08-31

Imem-sanThank you for your answer.I will refer to it.Regards,

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USB Device Descriptor Request Failed

Can I use ST's VID and PID?

Can I get an example of STM32H7 OTG firmware?

Re: USB Device Descriptor Request Failed

Re: Can I use ST's VID and PID?

Re: Can I get an example of STM32H7 OTG firmware?