3.6.4 Command Status Event
An opcode for the Command Status event is 0x0F. The BM70/71 sends this event response to indicate the command described by the command opcode parameter is received, and the BM70/71 device is performing the task associated with this command. Some HCI Command or HCI ACL Data packets (in this case HCI-ISDAP commands) take time to complete. This event response makes it possible to prevent the host from waiting for the command to finish. If the command cannot begin to execute, the status event parameter will contain a relevant error code and no command complete event will follow. With respect to programming, the host can use this event response to get the status on the HCI-ISDAP commands, which may take time to complete.