Before this change, initial charging ended exactly HOLD_TIME after the
CHARGE_INITIAL state was entered. This was usually not sufficient to
reach the INITIAL_FULL voltage. Now a new state is entered once the
INITIAL_FULL voltage is reached.
The measurement module now provides averaged measurements. These are
used in some places where accuracy is more important than latency (for
example for the temperature limit, where noise triggered the limit too
early).
This is most important for the LEDs and the RS485 interface. If any LED
is on when deep sleep is entered, it will stay on the whole sleep time,
drawing about 10 mA on the 3,3V rail.
The RS485 transceiver must be switched to RX mode, as it consumes about
30 mA from the 5V rail in TX mode.
Thomas Kolb