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https://github.com/halleysfifthinc/AVCLAN-Mockingboard.git
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Allen Hill
33 lines
971 B
C
33 lines
971 B
C
// Copyright (C) 2026 Allen Hill <allenofthehills@gmail.com>
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// SPDX-License-Identifier: GPL-3.0-or-later
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// CDChanger periodic-timer HAL: the ~1 Hz tick that drives the CD changer's
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// status updates. The timer hardware is target-specific; the CD changer owns
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// what a tick means (see cdchanger.cc). The device polls cdtimer_pending() and
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// clears the tick with cdtimer_clear().
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#pragma once
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#ifdef __cplusplus
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extern "C" {
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#endif
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// One-time hardware bring-up. Leaves the tick disabled.
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void cdtimer_init(void *ptr, void(clbk)(void *), bool(isplay)(void *));
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// Reset the count so the next tick is ~1 s out, and enable the tick.
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void cdtimer_reset(void);
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// Restore / disable the ~1 Hz tick.
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void cdtimer_restore(void);
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void cdtimer_disable(void);
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extern volatile bool cdtimer_pending_flag;
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static inline bool cdtimer_pending() { return cdtimer_pending_flag; }
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static inline void cdtimer_clear() { cdtimer_pending_flag = false; }
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#ifdef __cplusplus
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}
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#endif
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