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39 lines
896 B
C
39 lines
896 B
C
/*
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* fw/sweep.h - Image sweep
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*
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* Written 2012 by Werner Almesberger
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* Copyright 2012 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef SWEEP_H
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#define SWEEP_H
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#include <stdbool.h>
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#include <stdint.h>
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struct sweep {
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uint32_t wait_ticks; /* number of ticks to wait before image */
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uint16_t pixel_ticks; /* number of ticks per pixel */
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uint8_t left; /* leftmost line of image */
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uint8_t right; /* rightmost line of image */
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bool forward; /* direction of movement */
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};
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extern volatile bool sweeping;
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uint32_t uptime_irq(void);
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uint32_t uptime(void);
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void sweep_image(const struct sweep *sweep);
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void sweep_init(void);
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#endif /* !SWEEP_H */
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