circuitpython/ports/mimxrt10xx/common-hal/audiobusio/I2SOut.c

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/*
* 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"
// Some boards don't implement I2SOut, so suppress any routines from here.
#if CIRCUITPY_AUDIOBUSIO_I2SOUT
#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 "supervisor/shared/tick.h"
// Where required we use identifier names that are required by NXP's
// API, even though they do not conform to the naming standards that Adafruit
// strives to adhere to. https://www.adafruit.com/blacklivesmatter
#include "sdk/drivers/sai/fsl_sai.h"
STATIC void config_periph_pin(const mcu_periph_obj_t *periph) {
if (!periph) {
return;
}
if (periph->pin->mux_reg) {
IOMUXC_SetPinMux(
periph->pin->mux_reg, periph->mux_mode,
periph->input_reg, periph->input_idx,
0,
1);
}
IOMUXC_SetPinConfig(0, 0, 0, 0,
periph->pin->cfg_reg,
IOMUXC_SW_PAD_CTL_PAD_HYS(0)
| IOMUXC_SW_PAD_CTL_PAD_PUS(0)
| IOMUXC_SW_PAD_CTL_PAD_PUE(0)
| IOMUXC_SW_PAD_CTL_PAD_PKE(1)
| IOMUXC_SW_PAD_CTL_PAD_ODE(0)
| IOMUXC_SW_PAD_CTL_PAD_SPEED(2)
| IOMUXC_SW_PAD_CTL_PAD_DSE(4)
| IOMUXC_SW_PAD_CTL_PAD_SRE(0));
}
// 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) {
int instance = -1;
const mcu_periph_obj_t *bclk_periph = find_pin_function(mcu_i2s_tx_bclk_list, bit_clock, &instance, MP_QSTR_bit_clock);
const mcu_periph_obj_t *sync_periph = find_pin_function(mcu_i2s_tx_sync_list, word_select, &instance, MP_QSTR_word_select);
const mcu_periph_obj_t *data_periph = find_pin_function(mcu_i2s_tx_data0_list, data, &instance, MP_QSTR_data);
sai_transceiver_t config;
SAI_GetClassicI2SConfig(&config, 16, kSAI_Stereo, 1);
config.syncMode = kSAI_ModeAsync;
config.fifo.fifoPacking = kSAI_FifoPackingDisabled;
// These identifier names are required by NXP's API, even though they do
// not conform to the naming standards that Adafruit strives to adhere to.
// https://www.adafruit.com/blacklivesmatter
config.masterSlave = kSAI_Master;
port_i2s_initialize(&self->i2s, instance, &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);
config_periph_pin(data_periph);
config_periph_pin(sync_periph);
config_periph_pin(bclk_periph);
}
bool common_hal_audiobusio_i2sout_deinited(audiobusio_i2sout_obj_t *self) {
return port_i2s_deinited(&self->i2s);
}
void common_hal_audiobusio_i2sout_deinit(audiobusio_i2sout_obj_t *self) {
if (common_hal_audiobusio_i2sout_deinited(self)) {
return;
}
port_i2s_deinit(&self->i2s);
common_hal_reset_pin(self->bit_clock);
self->bit_clock = NULL;
common_hal_reset_pin(self->word_select);
self->word_select = NULL;
common_hal_reset_pin(self->data);
self->data = NULL;
}
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->i2s, sample, loop);
}
void common_hal_audiobusio_i2sout_pause(audiobusio_i2sout_obj_t *self) {
port_i2s_pause(&self->i2s);
}
void common_hal_audiobusio_i2sout_resume(audiobusio_i2sout_obj_t *self) {
port_i2s_resume(&self->i2s);
}
bool common_hal_audiobusio_i2sout_get_paused(audiobusio_i2sout_obj_t *self) {
return port_i2s_get_paused(&self->i2s);
}
void common_hal_audiobusio_i2sout_stop(audiobusio_i2sout_obj_t *self) {
port_i2s_stop(&self->i2s);
}
bool common_hal_audiobusio_i2sout_get_playing(audiobusio_i2sout_obj_t *self) {
return port_i2s_get_playing(&self->i2s);
}
#endif // CIRCUITPY_AUDIOBUSIO_I2SOUT