142 lines
4.4 KiB
C
142 lines
4.4 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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#include <stdint.h>
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#include <string.h>
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#include "mpconfigport.h"
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#include "bindings/espidf/__init__.h"
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// Some boards don't implement I2SOut, so suppress any routines from here.
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#if CIRCUITPY_AUDIOBUSIO_I2SOUT
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#include "extmod/vfs_fat.h"
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#include "py/gc.h"
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#include "py/mperrno.h"
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#include "py/runtime.h"
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#include "common-hal/audiobusio/I2SOut.h"
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#include "shared-bindings/audiobusio/I2SOut.h"
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#include "shared-bindings/audiocore/RawSample.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "driver/i2s_std.h"
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// Caller validates that pins are free.
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void common_hal_audiobusio_i2sout_construct(audiobusio_i2sout_obj_t *self,
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const mcu_pin_obj_t *bit_clock, const mcu_pin_obj_t *word_select,
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const mcu_pin_obj_t *data, const mcu_pin_obj_t *main_clock, bool left_justified) {
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port_i2s_allocate_init(&self->i2s, left_justified);
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i2s_std_config_t i2s_config = {
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.clk_cfg = I2S_STD_CLK_DEFAULT_CONFIG(48000),
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.slot_cfg = I2S_STD_MSB_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO),
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.gpio_cfg = {
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.mclk = main_clock != NULL ? main_clock->number : I2S_GPIO_UNUSED,
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.bclk = bit_clock->number,
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.ws = word_select->number,
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.dout = data->number,
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.din = I2S_GPIO_UNUSED,
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}
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};
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CHECK_ESP_RESULT(i2s_channel_init_std_mode(self->i2s.handle, &i2s_config));
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self->bit_clock = bit_clock;
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self->word_select = word_select;
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self->mclk = main_clock;
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self->data = data;
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claim_pin(bit_clock);
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claim_pin(word_select);
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if (main_clock) {
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claim_pin(main_clock);
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}
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claim_pin(data);
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}
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bool common_hal_audiobusio_i2sout_deinited(audiobusio_i2sout_obj_t *self) {
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return self->data == NULL;
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}
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void common_hal_audiobusio_i2sout_deinit(audiobusio_i2sout_obj_t *self) {
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if (common_hal_audiobusio_i2sout_deinited(self)) {
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return;
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}
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common_hal_audiobusio_i2sout_stop(self);
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port_i2s_deinit(&self->i2s);
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if (self->bit_clock) {
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reset_pin_number(self->bit_clock->number);
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}
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self->bit_clock = NULL;
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if (self->word_select) {
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reset_pin_number(self->word_select->number);
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}
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self->word_select = NULL;
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if (self->mclk) {
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reset_pin_number(self->mclk->number);
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}
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self->mclk = NULL;
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if (self->data) {
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reset_pin_number(self->data->number);
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}
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self->data = NULL;
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}
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void common_hal_audiobusio_i2sout_play(audiobusio_i2sout_obj_t *self,
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mp_obj_t sample, bool loop) {
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if (common_hal_audiobusio_i2sout_get_playing(self)) {
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common_hal_audiobusio_i2sout_stop(self);
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}
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port_i2s_play(&self->i2s, sample, loop);
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}
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void common_hal_audiobusio_i2sout_pause(audiobusio_i2sout_obj_t *self) {
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port_i2s_pause(&self->i2s);
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}
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void common_hal_audiobusio_i2sout_resume(audiobusio_i2sout_obj_t *self) {
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port_i2s_resume(&self->i2s);
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}
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bool common_hal_audiobusio_i2sout_get_paused(audiobusio_i2sout_obj_t *self) {
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return port_i2s_paused(&self->i2s);
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}
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void common_hal_audiobusio_i2sout_stop(audiobusio_i2sout_obj_t *self) {
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port_i2s_stop(&self->i2s);
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}
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bool common_hal_audiobusio_i2sout_get_playing(audiobusio_i2sout_obj_t *self) {
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return port_i2s_playing(&self->i2s);
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}
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#endif // CIRCUITPY_AUDIOBUSIO_I2SOUT
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