My device is a self-powered CDC device and I want it to have capability of sensing a soft-detach. It is required to have USB interface physically connected. Due to power constraints, the USB host can only start enumerating or detaching device by closing/opening switch on D+/D- periodically. The host has full control over attachment and detachment by receiving attach event and detach event from USB host stack. I want to have similar notification from USB device side. Now my question is, is there similar attach event and detach event sent out from USB device stack due to opening/closing of D+/D-?
Thanks and regards