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apps: steps: Use the alarm system to reset the step counter at midnight

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This is way better than zeroing it the first time in the day we use the
step counter!

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
This commit is contained in:
Daniel Thompson 2020-11-14 12:25:32 +00:00
parent d0a99d5636
commit dd5a1e75af
1 changed files with 29 additions and 8 deletions
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37
wasp/apps/steps.py
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@ -43,14 +43,41 @@ class StepCounterApp():
def __init__(self):
watch.accel.reset()
self._count = 0
self._prev_day = -1
self._wake = 0
def foreground(self):
"""Activate the application."""
"""Cancel the alarm and draw the application.
Cancelling the alarm has two effects. Firstly it ensures the
step count won't change whilst we are watching it and, secondly
it ensures that if the time of day has been set to a value in
the past the we reconfigure the alarm.
This does in the side effect that if the application of open at
midnight then the reset doesn't happen for that day.
"""
wasp.system.cancel_alarm(self._wake, self._reset)
wasp.system.bar.clock = True
self._draw()
wasp.system.request_tick(1000)
def background(self):
"""Set an alarm to trigger at midnight and reset the counter."""
now = watch.rtc.get_localtime()
yyyy = now[0]
mm = now[1]
dd = now[2]
then = (yyyy, mm, dd+1, 0, 0, 0, 0, 0, 0)
self._wake = time.mktime(then)
wasp.system.set_alarm(self._wake, self._reset)
def _reset(self):
""""Reset the step counter and re-arm the alarm."""
watch.accel.steps = 0
self._wake += 24 * 60 * 60
wasp.system.set_alarm(self._wake, self._reset)
def tick(self, ticks):
self._count += 686;
self._update()
@ -70,12 +97,6 @@ class StepCounterApp():
# Update the status bar
now = wasp.system.bar.update()
# Reset the step counter if we have move onto the next day
if now and now[2] != self._prev_day:
watch.accel.steps = 0
draw.fill(0, 60, 132-18, 180, 36)
self._prev_day = now[2]
# Update the step count
count = watch.accel.steps
t = str(count)