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a38b4f4287
The UART.IRQ_IDLE callback is called about two character times after the last byte, or 1 ms, whichever is larger. For the irq, timer 0 is used. machine_timer.c had to be reworked to make it's mechanisms available for machine_uart.c. The irq.flags() value is change only at a requested event. Otherwise keep the state. Signed-off-by: robert-hh <robert@hammelrath.com>
67 lines
2.2 KiB
C
67 lines
2.2 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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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, void (*timer_isr));
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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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