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/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2020 Lucian Copeland 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 "peripherals/rmt.h"
#include "py/runtime.h"
bool rmt_reserved_channels[RMT_CHANNEL_MAX];
void esp32s2_peripherals_rmt_reset(void) {
for (size_t i = 0; i < RMT_CHANNEL_MAX; i++) {
if (rmt_reserved_channels[i]) {
esp32s2_peripherals_free_rmt(i);
}
}
}
rmt_channel_t esp32s2_peripherals_find_and_reserve_rmt(void) {
for (size_t i = 0; i < RMT_CHANNEL_MAX; i++) {
if (!rmt_reserved_channels[i]) {
rmt_reserved_channels[i] = true;
return i;
}
}
// Returning the max indicates a reservation failure.
return RMT_CHANNEL_MAX;
}
void esp32s2_peripherals_free_rmt(rmt_channel_t chan) {
rmt_reserved_channels[chan] = false;
rmt_driver_uninstall(chan);
}
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