Excuse me:
The client made a keyboard with nrf51802.,It has been mass produced。The customer reported that the keyboard and MacBook were connected and bounding before opening the filevault of the MAC system,When you open the filevault of the MAC system and restart the MacBook to enter the login interface, MacBook can't automatically reconnect the keyboard, resulting in unable to enter the login password,This problem occurred in MacOS 11.4.
How to solve the problem in MacOS 11.4 that nrf51802 keyboard can't be automatically reconnected to MacBook in the login interface when filevault of MAC system is turned on。