60 lines
2.1 KiB
C
60 lines
2.1 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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* 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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#pragma once
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#include "sdk/drivers/sai/fsl_sai.h"
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#include "py/obj.h"
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#include "supervisor/background_callback.h"
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typedef struct {
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I2S_Type *peripheral;
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sai_handle_t handle;
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mp_obj_t sample;
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uint32_t *buffers[SAI_XFER_QUEUE_SIZE];
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uint8_t *sample_data, *sample_end;
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background_callback_t callback;
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bool playing, paused, loop, stopping;
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bool samples_signed;
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uint8_t channel_count, bytes_per_sample;
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uint8_t buffer_idx;
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uint32_t sample_rate;
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} i2s_t;
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void i2s_reset(void);
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void port_i2s_initialize(i2s_t *self, int instance, sai_transceiver_t *config);
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void port_i2s_deinit(i2s_t *self);
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bool port_i2s_deinited(i2s_t *self);
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void port_i2s_play(i2s_t *self, mp_obj_t sample, bool loop);
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void port_i2s_stop(i2s_t *self);
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bool port_i2s_get_playing(i2s_t *self);
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bool port_i2s_get_paused(i2s_t *self);
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void port_i2s_pause(i2s_t *self);
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void port_i2s_resume(i2s_t *self);
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