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[chg] kobo/powerd: Keep max. warmth 2h after bedtime (issue #3825)

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Keep max. warmth for 2h after bedtime, and then start reducing for 2h,
so that 4h after bedtime we have reached zero warmth.
This commit is contained in:
David Engster
2018-04-06 21:58:03 +02:00
committed by Frans de Jonge
parent 33c8c36f7a
commit 7c527aa5dd
1 changed files with 5 additions and 2 deletions
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7
frontend/device/kobo/powerd.lua
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@@ -233,9 +233,12 @@ function KoboPowerD:calculateAutoWarmth()
if diff_time < 12 then
-- We are before bedtime. Use a slower progression over 5h.
self.fl_warmth = math.max(20 * (5 - diff_time), 0)
elseif diff_time > 22 then
-- Keep warmth at maximum for two hours after bedtime.
self.fl_warmth = 100
else
-- After bedtime, it only takes 2h to reach zero warmth.
self.fl_warmth = math.max(100 - 50 * (24 - diff_time), 0)
-- Between 2-4h after bedtime, return to zero.
self.fl_warmth = math.max(100 - 50 * (22 - diff_time), 0)
end
self.fl_warmth = math.floor(self.fl_warmth + 0.5)
-- Enable background job for setting Warmth, if not already done.