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57 lines
2.0 KiB
C
57 lines
2.0 KiB
C
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// clang-format off
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/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_STM32_SYSTICK_H
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#define MICROPY_INCLUDED_STM32_SYSTICK_H
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#include <stdint.h>
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#include <stddef.h>
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// Works for x between 0 and 16 inclusive
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#define POW2_CEIL(x) ((((x) - 1) | ((x) - 1) >> 1 | ((x) - 1) >> 2 | ((x) - 1) >> 3) + 1)
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enum {
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SYSTICK_DISPATCH_DMA = 0,
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SYSTICK_DISPATCH_MAX
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};
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#define SYSTICK_DISPATCH_NUM_SLOTS POW2_CEIL(SYSTICK_DISPATCH_MAX)
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typedef void (*systick_dispatch_t)(uint32_t);
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extern systick_dispatch_t systick_dispatch_table[SYSTICK_DISPATCH_NUM_SLOTS];
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static inline void systick_enable_dispatch(size_t slot, systick_dispatch_t f) {
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systick_dispatch_table[slot] = f;
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}
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static inline void systick_disable_dispatch(size_t slot) {
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systick_dispatch_table[slot] = NULL;
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}
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#endif // MICROPY_INCLUDED_STM32_SYSTICK_H
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