iBeacon is a protocol developed by Apple. The main purpose of Beacons (which are simply Bluetooth advertisers - not connectable) is for location-data and proximity marketing.
The MetaWear firmware supports the iBeacon format and can advertise itself as an iBeacon.
To enable iBeacon mode, all you need to do is call mbl_mw_ibeacon_enable and disconnect from the board.
The other functions in the ibeacon.h header file configure the advertisement parameters.
MetaWear.mbl_mw_ibeacon_set_major(device.board, 78); MetaWear.mbl_mw_ibeacon_set_minor(device.board, 7453); MetaWear.mbl_mw_ibeacon_set_period(device.board, 15027); MetaWear.mbl_mw_ibeacon_set_rx_power(device.board, -55); MetaWear.mbl_mw_ibeacon_set_tx_power(device.board, -12); MetaWear.mbl_mw_ibeacon_set_uuid(device.board, up); MetaWear.mbl_mw_ibeacon_enable(device.board);