circuitpython/ports/espressif/common-hal/rgbmatrix/RGBMatrix.c

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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 Jeff Epler for Adafruit Industries
*
* 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.
*/
#include <stddef.h>
#include "common-hal/rgbmatrix/RGBMatrix.h"
#include "peripherals/timer.h"
void *common_hal_rgbmatrix_timer_allocate(rgbmatrix_rgbmatrix_obj_t *self) {
static const timer_config_t config = {
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.alarm_en = false,
.counter_en = false,
.intr_type = TIMER_INTR_LEVEL,
.counter_dir = TIMER_COUNT_UP,
.auto_reload = true,
.divider = 2 // 40MHz
};
timer_index_t *timer = malloc(sizeof(timer_index_t));
bool res = peripherals_timer_init(&config, timer);
if (!res) {
free(timer);
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return NULL;
}
peripherals_timer_never_reset(timer);
return timer;
}
extern bool _PM_esp32timerCallback(void *arg);
void common_hal_rgbmatrix_timer_enable(void *ptr) {
timer_index_t *timer = (timer_index_t *)ptr;
if (timer->idx == TIMER_MAX) {
return;
}
timer_start(timer->group, timer->idx);
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}
void common_hal_rgbmatrix_timer_disable(void *ptr) {
timer_index_t *timer = (timer_index_t *)ptr;
if (timer->idx == TIMER_MAX) {
return;
}
timer_pause(timer->group, timer->idx);
}
void common_hal_rgbmatrix_timer_free(void *ptr) {
timer_index_t *timer = (timer_index_t *)ptr;
if (timer->idx == TIMER_MAX) {
return;
}
common_hal_rgbmatrix_timer_disable(ptr);
timer_disable_intr(timer->group, timer->idx);
timer_isr_callback_remove(timer->group, timer->idx);
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peripherals_timer_deinit(timer);
free(timer);
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}