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2c2f0b292a
If the interrupt is not freed but merely disabled, instead of reallocating it every time the timer is enabled again we can instead just re-enable it. That means we're no longer setting the handler every time, and we need to ensure it does not change. Doing so by adding an additional wrapper function does not only solve that problem, it also allows us to remove some code duplication and simplify how machine_uart uses the timer. Signed-off-by: Daniël van de Giessen <daniel@dvdgiessen.nl>
68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* Development of the code in this file was sponsored by Microbric Pty Ltd
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013-2015 Damien P. George
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* Copyright (c) 2016 Paul Sokolovsky
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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_ESP32_MACHINE_TIMER_H
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#define MICROPY_INCLUDED_ESP32_MACHINE_TIMER_H
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#include "hal/timer_hal.h"
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#include "hal/timer_ll.h"
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#include "soc/timer_periph.h"
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#define TIMER_DIVIDER 8
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// TIMER_BASE_CLK is normally 80MHz. TIMER_DIVIDER ought to divide this exactly
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#define TIMER_SCALE (APB_CLK_FREQ / TIMER_DIVIDER)
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#define TIMER_FLAGS 0
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typedef struct _machine_timer_obj_t {
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mp_obj_base_t base;
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timer_hal_context_t hal_context;
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mp_uint_t group;
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mp_uint_t index;
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mp_uint_t repeat;
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// ESP32 timers are 64-bit
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uint64_t period;
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mp_obj_t callback;
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intr_handle_t handle;
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void (*handler)(struct _machine_timer_obj_t *timer);
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struct _machine_timer_obj_t *next;
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} machine_timer_obj_t;
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machine_timer_obj_t *machine_timer_create(mp_uint_t timer);
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void machine_timer_enable(machine_timer_obj_t *self);
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void machine_timer_disable(machine_timer_obj_t *self);
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#endif // MICROPY_INCLUDED_ESP32_MACHINE_TIMER_H
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