i cannot shutdown my laptop when laptop turns off, USB still working

[jkim.62]

hello, i've made custom hid.

it works everything ok.

but when i turns off laptop, usb still communicate to laptop.

then laptop cannot into powerdown mode.

cpu fan still working

i think i didn't make stm32 to receive power down signal or suspend signal from laptop.

how can i fix it?

[Tesla DeLorean]

You'd need to review the operating system and drivers involved, and the expectations there for power states and management. And on the USB side the expectations of the driver and responses/descriptors to implement power management. ST's example code is for demonstration purposes, you're likely to need to get much more involved in the code development for a commercial grade solution.

[AvaTar]

You might need to review the laptop's BIOS settings. Perhaps disable some "Wakeup on *" settings.

As mentioned, ST's example implementation is not commercial grade, and cannot expected to be.

[waclawek.jan]

Does the USB device properly implement Suspend?

JW