mirror of
https://github.com/m5stack/M5Stack_MicroPython.git
synced 2026-05-20 10:14:44 -07:00
464 lines
19 KiB
C
464 lines
19 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) 2018 M5Stack (https://github.com/m5stack)
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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 "py/obj.h"
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#include "py/objstr.h"
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#include "driver/i2s.h"
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// #include "machine_i2s.h"
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#include "py/runtime.h"
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#include "py/mperrno.h"
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typedef struct {
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mp_obj_base_t base;
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i2s_port_t port;
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i2s_config_t config;
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i2s_channel_t num_channels;
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uint8_t volume;
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} machine_i2s_obj_t;
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extern const mp_obj_type_t machine_i2s_type;
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STATIC void machine_i2s_obj_init_helper(machine_i2s_obj_t *self, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_mode, ARG_rate, ARG_bits, ARG_channel_format, ARG_data_format, ARG_dma_count, ARG_dma_len};
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_mode, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = I2S_MODE_MASTER | I2S_MODE_TX | I2S_MODE_DAC_BUILT_IN} },
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{ MP_QSTR_rate, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 16000} },
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{ MP_QSTR_bits, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 16} },
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{ MP_QSTR_channel_format, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = I2S_CHANNEL_FMT_RIGHT_LEFT} },
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{ MP_QSTR_data_format, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = I2S_COMM_FORMAT_I2S_MSB} },
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{ MP_QSTR_dma_count, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 4} },
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{ MP_QSTR_dma_len, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 1024} },
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};
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args, pos_args, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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self->config.mode = (i2s_mode_t)(args[ARG_mode].u_int);
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self->config.sample_rate = (int)args[ARG_rate].u_int;
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self->config.bits_per_sample = (i2s_bits_per_sample_t)args[ARG_bits].u_int;
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self->config.channel_format = (i2s_channel_fmt_t)args[ARG_channel_format].u_int;
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self->config.communication_format = (i2s_comm_format_t)args[ARG_data_format].u_int;
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self->config.intr_alloc_flags = ESP_INTR_FLAG_LEVEL1, //Interrupt level 1
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self->config.dma_buf_count = (int)args[ARG_dma_count].u_int;
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self->config.dma_buf_len = (int)args[ARG_dma_len].u_int;
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self->config.use_apll = 0;
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self->num_channels = 2;
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self->volume = 100;
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if (i2s_driver_install(self->port, &self->config, 0, NULL) != ESP_OK) {
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mp_raise_ValueError("I2S: failed to enable");
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}
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if ((self->config.mode & I2S_MODE_DAC_BUILT_IN) || (self->config.mode & I2S_MODE_PDM)) {
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i2s_set_pin(self->port, NULL);
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i2s_set_dac_mode(I2S_DAC_CHANNEL_BOTH_EN); // default
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}
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i2s_set_clk(self->port, self->config.sample_rate, self->config.bits_per_sample, self->num_channels);
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}
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//----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_make_new(const mp_obj_type_t *type, size_t n_args, size_t n_kw, const mp_obj_t *args) {
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mp_int_t port = I2S_NUM_0;
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if (n_args > 0) {
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port = mp_obj_get_int(args[0]);
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n_args--;
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args++;
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}
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if (port >= I2S_NUM_MAX || port < I2S_NUM_0) {
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mp_raise_ValueError("invalid I2S peripheral");
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}
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// Create I2S object
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machine_i2s_obj_t *self = m_new_obj(machine_i2s_obj_t);
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self->base.type = &machine_i2s_type;
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self->port = port;
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mp_map_t kw_args;
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mp_map_init_fixed_table(&kw_args, n_kw, args + n_args);
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machine_i2s_obj_init_helper(self, n_args, args, &kw_args);
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return (machine_i2s_obj_t*)self; // discard const
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}
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//----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_init(size_t n_args, const mp_obj_t *args, mp_map_t *kw_args) {
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machine_i2s_obj_init_helper(args[0], n_args - 1, args + 1, kw_args);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2s_init_obj, 2, machine_i2s_init);
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//----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_deinit(mp_obj_t self_in) {
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const machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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i2s_driver_uninstall(self->port);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(machine_i2s_deinit_obj, machine_i2s_deinit);
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//----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_start(mp_obj_t self_in) {
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const machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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i2s_start(self->port);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(machine_i2s_start_obj, machine_i2s_start);
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//----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_stop(mp_obj_t self_in) {
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const machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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i2s_stop(self->port);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_1(machine_i2s_stop_obj, machine_i2s_stop);
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//-----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_sample_rates(mp_obj_t self_in, mp_obj_t rate) {
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machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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self->config.sample_rate = mp_obj_get_int(rate);
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i2s_set_sample_rates(self->port, (uint32_t)(self->config.sample_rate));
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_sample_rates_obj, machine_i2s_sample_rates);
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//-----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_bits_per_sample(mp_obj_t self_in, mp_obj_t bits) {
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machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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self->config.bits_per_sample = (i2s_bits_per_sample_t)mp_obj_get_int(bits);
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i2s_set_clk(self->port, self->config.sample_rate, self->config.bits_per_sample, self->num_channels);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_bits_per_sample_obj, machine_i2s_bits_per_sample);
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//-----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_set_channel(mp_obj_t self_in, mp_obj_t channel) {
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machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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self->num_channels = (i2s_channel_t)mp_obj_get_int(channel);
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i2s_set_clk(self->port, self->config.sample_rate, self->config.bits_per_sample, self->num_channels);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_set_channel_obj, machine_i2s_set_channel);
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//-----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_set_dac_mode(mp_obj_t self_in, mp_obj_t dac_mode) {
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machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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uint8_t _dac_mode = mp_obj_get_int(dac_mode);
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if (self->port == I2S_NUM_0) {
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i2s_set_dac_mode((i2s_dac_mode_t)_dac_mode);
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} else {
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mp_raise_ValueError("PDM and built-in DAC functions are only supported on I2S0 for current ESP32 chip.");
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_set_dac_mode_obj, machine_i2s_set_dac_mode);
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//-----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_set_adc_mode(mp_obj_t self_in, mp_obj_t pin) {
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machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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uint8_t adc_pin = mp_obj_get_int(pin);
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uint8_t adc1_channel[] = {
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ADC1_CHANNEL_4, /*!< ADC1 channel 4 is GPIO32 */
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ADC1_CHANNEL_5, /*!< ADC1 channel 5 is GPIO33 */
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ADC1_CHANNEL_6, /*!< ADC1 channel 6 is GPIO34 */
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ADC1_CHANNEL_7, /*!< ADC1 channel 7 is GPIO35 */
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ADC1_CHANNEL_0, /*!< ADC1 channel 0 is GPIO36 */
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ADC1_CHANNEL_1, /*!< ADC1 channel 1 is GPIO37 */
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ADC1_CHANNEL_2, /*!< ADC1 channel 2 is GPIO38 */
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ADC1_CHANNEL_3 /*!< ADC1 channel 3 is GPIO39 */
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};
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if (adc_pin < 32 || adc_pin > 39) {
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mp_raise_ValueError("built-in ADC functions are only supported ADC1 channel.");
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}
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if (self->port == I2S_NUM_0) {
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i2s_set_adc_mode(ADC_UNIT_1, (adc1_channel_t)(adc1_channel[adc_pin - 32]));
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} else {
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mp_raise_ValueError("built-in ADC functions are only supported on I2S0 for current ESP32 chip.");
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_set_adc_mode_obj, machine_i2s_set_adc_mode);
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//-----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_adc_enable(mp_obj_t self_in, mp_obj_t enable) {
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machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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uint8_t _enable = mp_obj_get_int(enable);
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if (_enable) {
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i2s_adc_enable(self->port);
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} else {
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i2s_adc_disable(self->port);
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_adc_enable_obj, machine_i2s_adc_enable);
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//-------------------------------------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_set_pin(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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const mp_arg_t allowed_args[] = {
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{ MP_QSTR_bck, MP_ARG_REQUIRED | MP_ARG_INT, { .u_int = 0 } },
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{ MP_QSTR_ws, MP_ARG_REQUIRED | MP_ARG_INT, { .u_int = 0 } },
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{ MP_QSTR_out, MP_ARG_REQUIRED | MP_ARG_INT, { .u_int = 0 } },
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{ MP_QSTR_in, MP_ARG_INT, { .u_int = -1 } },
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};
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machine_i2s_obj_t *self = MP_OBJ_TO_PTR(pos_args[0]);
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mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
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mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
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mp_int_t bck_io_num = args[0].u_int;
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mp_int_t ws_io_num = args[1].u_int;
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mp_int_t data_out_num = args[2].u_int;
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mp_int_t data_in_num = -1;
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if (args[3].u_int >= 0) {
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mp_int_t data_in_num = args[3].u_int;
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}
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i2s_pin_config_t pin_config = {
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.bck_io_num = bck_io_num,
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.ws_io_num = ws_io_num,
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.data_out_num = data_out_num,
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.data_in_num = data_in_num,
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};
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if (i2s_set_pin(self->port, &pin_config) != ESP_OK) {
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i2s_driver_uninstall(self->port);
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mp_raise_ValueError("I2S: failed to set pins in");
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}
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return mp_const_none;
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}
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STATIC MP_DEFINE_CONST_FUN_OBJ_KW(machine_i2s_set_pin_obj, 3, machine_i2s_set_pin);
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//-----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_set_volume(mp_obj_t self_in, mp_obj_t volume) {
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machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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self->volume = mp_obj_get_int(volume);
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_set_volume_obj, machine_i2s_set_volume);
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//----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_write(const mp_obj_t self_in, mp_obj_t buf_in) {
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const machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
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if (i2s_write_bytes(self->port, bufinfo.buf, bufinfo.len, portMAX_DELAY) == ESP_FAIL) {
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mp_raise_OSError(MP_EIO);
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_write_obj, machine_i2s_write);
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//----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_read(const mp_obj_t self_in, mp_obj_t buf_len) {
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const machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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uint8_t *rdbuf = malloc(buf_len);
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if (i2s_read_bytes(self->port, (char*)rdbuf, buf_len, portMAX_DELAY) == ESP_FAIL) {
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mp_raise_OSError(MP_EIO);
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return mp_const_none;
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}
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mp_obj_t res = mp_const_none;
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if (rdbuf) res = mp_obj_new_str_of_type(&mp_type_bytes, (byte*)rdbuf, buf_len);
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else res = mp_obj_new_str_of_type(&mp_type_bytes, (byte*)"", 0);
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if (rdbuf) free(rdbuf);
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return res;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_read_obj, machine_i2s_read);
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//----------------------------------------------------------------------
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STATIC mp_obj_t machine_i2s_stream_out(const mp_obj_t self_in, mp_obj_t buf_in) {
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const machine_i2s_obj_t *self = MP_OBJ_TO_PTR(self_in);
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mp_buffer_info_t bufinfo;
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mp_get_buffer_raise(buf_in, &bufinfo, MP_BUFFER_READ);
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uint8_t buf_bytes_per_sample = (self->config.bits_per_sample / 8);
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uint32_t num_samples = bufinfo.len / buf_bytes_per_sample / self->num_channels;
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// support only 16 bit buffers for now
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if(self->config.bits_per_sample != I2S_BITS_PER_SAMPLE_16BIT) {
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mp_raise_ValueError("support only 16 bit buffers for now");
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return mp_const_none;
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}
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// pointer to left / right sample position
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char *ptr_l = bufinfo.buf;
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char *ptr_r = bufinfo.buf + buf_bytes_per_sample;
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uint8_t stride = buf_bytes_per_sample * 2;
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if (self->num_channels == (i2s_channel_t)1) {
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ptr_r = ptr_l;
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}
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int bytes_pushed = 0;
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TickType_t max_wait = 20 / portTICK_PERIOD_MS; // portMAX_DELAY = bad idea
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for (int i = 0; i < num_samples; i++) {
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if (self->config.mode & I2S_MODE_DAC_BUILT_IN) {
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// assume 16 bit src bit_depth
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short left = *(short *) ptr_l;
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short right = *(short *) ptr_r;
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left = (int)left * self->volume / 100;
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right = (int)right * self->volume / 100;
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// The built-in DAC wants unsigned samples, so we shift the range
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// from -32768-32767 to 0-65535.
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left = left + 0x8000;
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right = right + 0x8000;
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uint32_t sample = (uint16_t) left;
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sample = (sample << 16 & 0xffff0000) | ((uint16_t) right);
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bytes_pushed = i2s_push_sample(self->port, (const char*) &sample, 0);
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} else {
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switch (self->config.bits_per_sample)
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{
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case I2S_BITS_PER_SAMPLE_16BIT:
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; // workaround
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/* low - high / low - high */
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const char samp32[4] = {ptr_l[0], ptr_l[1], ptr_r[0], ptr_r[1]};
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bytes_pushed = i2s_push_sample(self->port, (const char*) &samp32, max_wait);
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break;
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case I2S_BITS_PER_SAMPLE_32BIT:
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; // workaround
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const char samp64[8] = {0, 0, ptr_l[0], ptr_l[1], 0, 0, ptr_r[0], ptr_r[1]};
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bytes_pushed = i2s_push_sample(self->port, (const char*) &samp64, max_wait);
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break;
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default:
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// ESP_LOGE(TAG, "bit depth unsupported: %d", self->config.bits_per_sample);
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mp_raise_ValueError("8 bit depth unsupported");
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}
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}
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// DMA buffer full - retry
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if (bytes_pushed == 0) {
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i--;
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} else {
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ptr_r += stride;
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ptr_l += stride;
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}
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(machine_i2s_stream_out_obj, machine_i2s_stream_out);
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//----------------------------------------------------------------------
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STATIC const mp_rom_map_elem_t machine_i2s_locals_dict_table[] = {
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// Standard methods
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{ MP_ROM_QSTR(MP_QSTR_init), MP_ROM_PTR(&machine_i2s_init_obj)},
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{ MP_ROM_QSTR(MP_QSTR_deinit), MP_ROM_PTR(&machine_i2s_deinit_obj) },
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{ MP_ROM_QSTR(MP_QSTR_start), MP_ROM_PTR(&machine_i2s_start_obj) },
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{ MP_ROM_QSTR(MP_QSTR_stop), MP_ROM_PTR(&machine_i2s_stop_obj) },
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{ MP_ROM_QSTR(MP_QSTR_sample_rate), MP_ROM_PTR(&machine_i2s_sample_rates_obj) },
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{ MP_ROM_QSTR(MP_QSTR_bits), MP_ROM_PTR(&machine_i2s_bits_per_sample_obj) },
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{ MP_ROM_QSTR(MP_QSTR_nchannels), MP_ROM_PTR(&machine_i2s_set_channel_obj) },
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{ MP_ROM_QSTR(MP_QSTR_set_pin), MP_ROM_PTR(&machine_i2s_set_pin_obj) },
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{ MP_ROM_QSTR(MP_QSTR_set_dac_mode), MP_ROM_PTR(&machine_i2s_set_dac_mode_obj) },
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{ MP_ROM_QSTR(MP_QSTR_set_adc_mode), MP_ROM_PTR(&machine_i2s_set_adc_mode_obj) },
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{ MP_ROM_QSTR(MP_QSTR_adc_enable), MP_ROM_PTR(&machine_i2s_adc_enable_obj) },
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{ MP_ROM_QSTR(MP_QSTR_write), MP_ROM_PTR(&machine_i2s_write_obj) },
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{ MP_ROM_QSTR(MP_QSTR_read), MP_ROM_PTR(&machine_i2s_read_obj) },
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{ MP_ROM_QSTR(MP_QSTR_volume), MP_ROM_PTR(&machine_i2s_set_volume_obj) },
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{ MP_ROM_QSTR(MP_QSTR_stream_out), MP_ROM_PTR(&machine_i2s_stream_out_obj) },
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// Constants
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{ MP_ROM_QSTR(MP_QSTR_I2S_NUM_0), MP_ROM_INT(I2S_NUM_0) },
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{ MP_ROM_QSTR(MP_QSTR_I2S_NUM_1), MP_ROM_INT(I2S_NUM_1) },
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{ MP_ROM_QSTR(MP_QSTR_MODE_MASTER), MP_ROM_INT(I2S_MODE_MASTER) },
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{ MP_ROM_QSTR(MP_QSTR_MODE_SLAVE), MP_ROM_INT(I2S_MODE_SLAVE) },
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{ MP_ROM_QSTR(MP_QSTR_MODE_TX), MP_ROM_INT(I2S_MODE_TX) },
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{ MP_ROM_QSTR(MP_QSTR_MODE_RX), MP_ROM_INT(I2S_MODE_RX) },
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{ MP_ROM_QSTR(MP_QSTR_MODE_DAC_BUILT_IN), MP_ROM_INT(I2S_MODE_DAC_BUILT_IN) },
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{ MP_ROM_QSTR(MP_QSTR_MODE_ADC_BUILT_IN), MP_ROM_INT(I2S_MODE_ADC_BUILT_IN) },
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{ MP_ROM_QSTR(MP_QSTR_MODE_PDM), MP_ROM_INT(I2S_MODE_PDM) },
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{ MP_ROM_QSTR(MP_QSTR_CHANNEL_RIGHT_LEFT),MP_ROM_INT(I2S_CHANNEL_FMT_RIGHT_LEFT) },
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{ MP_ROM_QSTR(MP_QSTR_CHANNEL_ALL_RIGHT), MP_ROM_INT(I2S_CHANNEL_FMT_ALL_RIGHT) },
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{ MP_ROM_QSTR(MP_QSTR_CHANNEL_ALL_LEFT), MP_ROM_INT(I2S_CHANNEL_FMT_ALL_LEFT) },
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{ MP_ROM_QSTR(MP_QSTR_CHANNEL_ONLY_RIGHT),MP_ROM_INT(I2S_CHANNEL_FMT_ONLY_RIGHT) },
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{ MP_ROM_QSTR(MP_QSTR_CHANNEL_ONLY_LEFT), MP_ROM_INT(I2S_CHANNEL_FMT_ONLY_LEFT) },
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|
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{ MP_ROM_QSTR(MP_QSTR_FORMAT_I2S), MP_ROM_INT(I2S_COMM_FORMAT_I2S) },
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{ MP_ROM_QSTR(MP_QSTR_FORMAT_I2S_MSB), MP_ROM_INT(I2S_COMM_FORMAT_I2S_MSB) },
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{ MP_ROM_QSTR(MP_QSTR_FORMAT_I2S_LSB), MP_ROM_INT(I2S_COMM_FORMAT_I2S_LSB) },
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{ MP_ROM_QSTR(MP_QSTR_FORMAT_PCM), MP_ROM_INT(I2S_COMM_FORMAT_PCM) },
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{ MP_ROM_QSTR(MP_QSTR_FORMAT_PCM_SHORT), MP_ROM_INT(I2S_COMM_FORMAT_PCM_SHORT) },
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{ MP_ROM_QSTR(MP_QSTR_FORMAT_PCM_LONG), MP_ROM_INT(I2S_COMM_FORMAT_PCM_LONG) },
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|
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{ MP_ROM_QSTR(MP_QSTR_DAC_DISABLE), MP_ROM_INT(I2S_DAC_CHANNEL_DISABLE) },
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{ MP_ROM_QSTR(MP_QSTR_DAC_RIGHT_EN), MP_ROM_INT(I2S_DAC_CHANNEL_RIGHT_EN) },
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{ MP_ROM_QSTR(MP_QSTR_DAC_LEFT_EN), MP_ROM_INT(I2S_DAC_CHANNEL_LEFT_EN) },
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{ MP_ROM_QSTR(MP_QSTR_DAC_BOTH_EN), MP_ROM_INT(I2S_DAC_CHANNEL_BOTH_EN) },
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};
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STATIC MP_DEFINE_CONST_DICT(machine_i2s_locals_dict, machine_i2s_locals_dict_table);
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|
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const mp_obj_type_t machine_i2s_type = {
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{ &mp_type_type },
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.name = MP_QSTR_I2S,
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.make_new = machine_i2s_make_new,
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.locals_dict = (mp_obj_dict_t*)&machine_i2s_locals_dict,
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};
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