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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 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/_protomatter/Protomatter.h"
#include "samd/timers.h"
#include "timer_handler.h"
void *common_hal_protomatter_timer_allocate() {
uint8_t timer_index = find_free_timer();
if (timer_index == 0xff) {
return NULL;
}
timer_never_reset(timer_index, true);
return tc_insts[timer_index];
}
static uint8_t tc_index_from_ptr(void* ptr) {
for (uint8_t i = TC_INST_NUM; i > 0; i--) {
if (tc_insts[i] == ptr) {
return i;
}
}
return 0xff;
}
void common_hal_protomatter_timer_enable(void* ptr) {
uint8_t timer_index = tc_index_from_ptr(ptr);
if (timer_index == 0xff) {
return;
}
set_timer_handler(true, timer_index, TC_HANDLER_PROTOMATTER);
turn_on_clocks(true, timer_index, 1);
}
void common_hal_protomatter_timer_disable(void* ptr) {
uint8_t timer_index = tc_index_from_ptr(ptr);
if (timer_index == 0xff) {
return;
}
set_timer_handler(true, timer_index, TC_HANDLER_NO_INTERRUPT);
}
void common_hal_protomatter_timer_free(void* ptr) {
uint8_t timer_index = tc_index_from_ptr(ptr);
if (timer_index == 0xff) {
return;
}
tc_set_enable(ptr, false);
tc_reset(ptr);
timer_reset_ok(timer_index, true);
}