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20 lines
655 B
C
20 lines
655 B
C
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#pragma once
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#include <inttypes.h>
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// All functions here are no-op when LOW_BATTERY_PIN is undef so they can be
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// called unconditionnaly.
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// This functions must be called during the startup of the program to initialize
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// internal data related to rendering the low battery icon.
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void InitLowBatterySystem();
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// Polls and saves the state of the battery. No-op if the function was called
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// less than LOW_BATTERY_POLLING_INTERVAL tick() ago.
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void PollLowBattery();
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// Draws a low battery icon on the given framebuffer if the last call to
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// pollLowBattery found a low battery state.
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void DrawLowBatteryIcon(uint16_t *framebuffer);
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