circuitpython/ports/espressif/common-hal/audiobusio/I2SOut.c

130 lines
4.1 KiB
C

/*
* This file is part of the MicroPython 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 <stdint.h>
#include <string.h>
#include "mpconfigport.h"
#include "bindings/espidf/__init__.h"
// Some boards don't implement I2SOut, so suppress any routines from here.
#if CIRCUITPY_AUDIOBUSIO_I2SOUT
#include "extmod/vfs_fat.h"
#include "py/gc.h"
#include "py/mperrno.h"
#include "py/runtime.h"
#include "common-hal/audiobusio/I2SOut.h"
#include "shared-bindings/audiobusio/I2SOut.h"
#include "shared-bindings/audiocore/RawSample.h"
#include "shared-bindings/microcontroller/Pin.h"
#include "supervisor/shared/translate/translate.h"
#include "driver/i2s.h"
// Caller validates that pins are free.
void common_hal_audiobusio_i2sout_construct(audiobusio_i2sout_obj_t *self,
const mcu_pin_obj_t *bit_clock, const mcu_pin_obj_t *word_select,
const mcu_pin_obj_t *data, bool left_justified) {
port_i2s_allocate_init(&self->peripheral, left_justified);
i2s_pin_config_t i2s_pin_config = {
.bck_io_num = bit_clock->number,
.ws_io_num = word_select->number,
.data_out_num = data->number,
.data_in_num = I2S_PIN_NO_CHANGE,
};
CHECK_ESP_RESULT(i2s_set_pin(self->peripheral.instance, &i2s_pin_config));
self->bit_clock = bit_clock;
self->word_select = word_select;
self->data = data;
claim_pin(bit_clock);
claim_pin(word_select);
claim_pin(data);
}
bool common_hal_audiobusio_i2sout_deinited(audiobusio_i2sout_obj_t *self) {
return self->peripheral.instance == -1;
}
void common_hal_audiobusio_i2sout_deinit(audiobusio_i2sout_obj_t *self) {
if (common_hal_audiobusio_i2sout_deinited(self)) {
return;
}
if (self->bit_clock) {
reset_pin_number(self->bit_clock->number);
}
self->bit_clock = NULL;
if (self->word_select) {
reset_pin_number(self->word_select->number);
}
self->word_select = NULL;
if (self->data) {
reset_pin_number(self->data->number);
}
self->data = NULL;
if (self->peripheral.instance >= 0) {
port_i2s_reset_instance(self->peripheral.instance);
}
self->peripheral.instance = -1;
}
void common_hal_audiobusio_i2sout_play(audiobusio_i2sout_obj_t *self,
mp_obj_t sample, bool loop) {
if (common_hal_audiobusio_i2sout_get_playing(self)) {
common_hal_audiobusio_i2sout_stop(self);
}
port_i2s_play(&self->peripheral, sample, loop);
}
void common_hal_audiobusio_i2sout_pause(audiobusio_i2sout_obj_t *self) {
port_i2s_pause(&self->peripheral);
}
void common_hal_audiobusio_i2sout_resume(audiobusio_i2sout_obj_t *self) {
port_i2s_resume(&self->peripheral);
}
bool common_hal_audiobusio_i2sout_get_paused(audiobusio_i2sout_obj_t *self) {
return port_i2s_paused(&self->peripheral);
}
void common_hal_audiobusio_i2sout_stop(audiobusio_i2sout_obj_t *self) {
port_i2s_stop(&self->peripheral);
}
bool common_hal_audiobusio_i2sout_get_playing(audiobusio_i2sout_obj_t *self) {
return port_i2s_playing(&self->peripheral);
}
#endif // CIRCUITPY_AUDIOBUSIO_I2SOUT