The Cressi Drake is a mainly a freedive computer. The data format is
almost identical to the Leonardo. The main difference is that a single
dive now contains an entire freedive session. Each freedive in the
session is delimited with a 4 byte header containing the surface
interval and a special marker.
This is only a preliminary version. There is certainly some room for
improvement, but the basic functionality is already in place. That
should be sufficient for daily use, and possibles issues can always be
fixed when discovered.