circuitpython/shared/runtime/softtimer.h

67 lines
2.6 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Damien P. George
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MICROPY_INCLUDED_SHARED_RUNTIME_SOFTTIMER_H
#define MICROPY_INCLUDED_SHARED_RUNTIME_SOFTTIMER_H
#include "py/pairheap.h"
#define SOFT_TIMER_FLAG_PY_CALLBACK (1)
#define SOFT_TIMER_FLAG_GC_ALLOCATED (2)
#define SOFT_TIMER_MODE_ONE_SHOT (1)
#define SOFT_TIMER_MODE_PERIODIC (2)
typedef struct _soft_timer_entry_t {
mp_pairheap_t pairheap;
uint16_t flags;
uint16_t mode;
uint32_t expiry_ms;
uint32_t delta_ms; // for periodic mode
union {
void (*c_callback)(struct _soft_timer_entry_t *);
mp_obj_t py_callback;
};
} soft_timer_entry_t;
extern volatile uint32_t soft_timer_next;
void soft_timer_deinit(void);
void soft_timer_handler(void);
void soft_timer_gc_mark_all(void);
void soft_timer_static_init(soft_timer_entry_t *entry, uint16_t mode, uint32_t delta_ms, void (*cb)(soft_timer_entry_t *));
void soft_timer_insert(soft_timer_entry_t *entry, uint32_t initial_delta_ms);
void soft_timer_remove(soft_timer_entry_t *entry);
// The timer will be reinserted into the heap so that it is called after initial_delta_ms milliseconds.
// After that, if it's periodic, it will continue to be called every entry->delta_ms milliseconds.
static inline void soft_timer_reinsert(soft_timer_entry_t *entry, uint32_t initial_delta_ms) {
soft_timer_remove(entry);
soft_timer_insert(entry, initial_delta_ms);
}
#endif // MICROPY_INCLUDED_SHARED_RUNTIME_SOFTTIMER_H