Wake on VBUS connected but not disconnectedW

[Constantin]

Hi,

we are developing a device which should go to system off on receival of a command either via USB or BLE. If the device is connected via USB and is put into sleep it wakes up if the cable is disconnected. But it should stay in system off. Any idea why this happens and how to avoid it.

Kind regards,

C.W.

[Constantin]

Okay, it can be only fixed if I read the reset reason and usb state upon start from reset and check it was a cable remove or cable plugin. In case of a cable remove it returns to sleep. This seems to be the only solution so far.