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4 changes: 3 additions & 1 deletion adafruit_ticks.py
Original file line number Diff line number Diff line change
Expand Up @@ -122,7 +122,9 @@ def ticks_ms() -> int:

def ticks_add(ticks: int, delta: int) -> int:
"Add a delta to a base number of ticks, performing wraparound at 2**29ms."
return (ticks + delta) % _TICKS_PERIOD
if -_TICKS_HALFPERIOD < delta < _TICKS_HALFPERIOD:
return (ticks + delta) % _TICKS_PERIOD
raise OverflowError("ticks interval overflow")


def ticks_diff(ticks1: int, ticks2: int) -> int:
Expand Down