press() adds the specified key (printing, non-printing, or modifier) to the persistent key report and sends the report. Because of the way USB HID wo

Invoked when received GET HID REPORT DESCRIPTOR request Application return pointer to descriptor, whose contents must exist long enough for transfer t

Invoked when received GET_REPORT control request Application must fill buffer report's content and return its length. Return zero will cause the stack

Invoked when received SET_IDLE request. return false will stall the request - Idle Rate = 0 : only send report if there is changes, i.e skip duplicati

Invoked when received SET_PROTOCOL request protocol is either HID_PROTOCOL_BOOT (0) or HID_PROTOCOL_REPORT (1)

Invoked when received SET_REPORT control request or received data on OUT endpoint ( Report ID = 0, Type = 0 )