79 lines
2.5 KiB
C
79 lines
2.5 KiB
C
/*
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* This file is part of the Micro Python 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) 2020 Jeff Epler for Adafruit Industries
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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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#include <stddef.h>
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#include "common-hal/rgbmatrix/RGBMatrix.h"
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#include "samd/timers.h"
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#include "timer_handler.h"
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void *common_hal_rgbmatrix_timer_allocate(rgbmatrix_rgbmatrix_obj_t *self) {
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uint8_t timer_index = find_free_timer();
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if (timer_index == 0xff) {
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return NULL;
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}
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timer_never_reset(timer_index, true);
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return tc_insts[timer_index];
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}
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static uint8_t tc_index_from_ptr(void* ptr) {
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for (uint8_t i = TC_INST_NUM; i > 0; i--) {
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if (tc_insts[i] == ptr) {
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return i;
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}
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}
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return 0xff;
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}
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void common_hal_rgbmatrix_timer_enable(void* ptr) {
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uint8_t timer_index = tc_index_from_ptr(ptr);
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if (timer_index == 0xff) {
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return;
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}
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set_timer_handler(true, timer_index, TC_HANDLER_RGBMATRIX);
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turn_on_clocks(true, timer_index, 1);
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}
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void common_hal_rgbmatrix_timer_disable(void* ptr) {
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uint8_t timer_index = tc_index_from_ptr(ptr);
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if (timer_index == 0xff) {
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return;
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}
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set_timer_handler(true, timer_index, TC_HANDLER_NO_INTERRUPT);
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tc_set_enable(ptr, false);
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}
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void common_hal_rgbmatrix_timer_free(void* ptr) {
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uint8_t timer_index = tc_index_from_ptr(ptr);
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if (timer_index == 0xff) {
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return;
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}
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tc_set_enable(ptr, false);
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tc_reset(ptr);
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timer_reset_ok(timer_index, true);
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}
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