Gradually reset maximum/minimum brightness

This commit is contained in:
fruchti 2020-07-17 23:31:57 +02:00
parent 53aa19d91f
commit 5d1ef2263a
3 changed files with 16 additions and 1 deletions

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@ -1 +1 @@
417
424

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@ -99,6 +99,17 @@ void LightSensor_Poll(void)
{
LightSensor_RelativeBrightness = LIGHTSENSOR_MAX;
}
// Slowly reset limit values
static int decay_counter = 0;
decay_counter++;
if(decay_counter == LIGHTSENSOR_LIMIT_RESET_TIME * 1000
/ LIGHTSENSOR_INTERVAL / LIGHTSENSOR_MAX)
{
decay_counter = 0;
LightSensor_MaximumBrightness -= 1;
LightSensor_MinimumBrightness += 1;
}
}
}

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@ -15,6 +15,10 @@
// 'Forgetting factor' of the rolling brightness average
#define LIGHTSENSOR_LAMBDA_BITS 4
// Time until minimum and maximum value are completely reset (in seconds)
#define LIGHTSENSOR_LIMIT_RESET_TIME \
(24 * 60 * 60)
// Bounds for converting absolute to relative brightness: Consider everything
// near the minimum or maximum 0.0 or 1.0, respectively
#define LIGHTSENSOR_LOW_BOUND ((unsigned int)(0.005 * LIGHTSENSOR_MAX))