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""" Real Time Clock based on the nRF-family low power counter """
#class Stim(object):
# def __init__(self):
# self(0)
#
# def __call__(self, v):
# self.c = v
#
# def counter(self):
# return self.c
class RTC(object):
"""Real Time Clock based on the nRF-family low power counter.
TODO: Maintain hh:mm:ss as an array so we can report time
without memory allocation.
"""
def __init__(self, counter):
self.counter = counter
self.uptime = 0
self.set_time((12, 0, 0))
def update(self):
newcount = self.counter.counter()
split = newcount - self.lastcount
if split == 0:
return False
if split < 0:
split += (1 << 24)
elapsed = split // 8
self.lastcount += elapsed * 8
self.lastcount &= (1 << 24) - 1
self.uptime += elapsed
self.ss += elapsed
if self.ss >= 60:
self.mm += self.ss // 60
self.ss %= 60
if self.mm >= 60:
self.hh += self.mm // 60
self.mm %= 60
self.hh %= 24
return True
def set_time(self, t):
self.lastcount = self.counter.counter()
self.hh = t[0]
self.mm = t[1]
self.ss = t[2]
def get_time(self):
self.update()
return (self.hh, self.mm, self.ss)
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