27 lines
675 B
C
27 lines
675 B
C
#pragma once
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#include <stdbool.h>
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#include "stm32f030x6.h"
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#include "pinning.h"
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// ADC polling interval in milliseconds
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#define LIGHTSENSOR_INTERVAL 500
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// Resolution of the brightness output
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#define LIGHTSENSOR_BITS 12
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#define LIGHTSENSOR_MAX ((1 << LIGHTSENSOR_BITS) - 1)
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// 'Forgetting factor' of the rolling brightness average
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#define LIGHTSENSOR_LAMBDA_BITS 2
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// Bounds for converting absolute to relative brightness (empirically
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// determined)
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#define LIGHTSENSOR_LOW_BOUND 5
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#define LIGHTSENSOR_HIGH_BOUND ((int)(0.85 * LIGHTSENSOR_MAX))
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extern int LightSensor_RelativeBrightness;
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void LightSensor_Init(void);
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void LightSensor_Poll(void);
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