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esp32s2: audiobusio: move i2s_common inside

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Originally, I believed the implementation might be shared with AudioOut,
as on the ESP32 (non-S2) the I2S peripheral was also used to drive the DAC.
However, this is not the case on ESP32-S2 and appears it will not be
the case with the ESP32-S3 or -C3, to the extent that there's skeletal
support for either of them in esp-idf master branch.

However, it could still be shared by I2SIn or PDMIn (the latter being
hypothetically implemented as I2SIn + digital postprocessing like we did
in the atmel-sam port, to my understanding), so I moved it to
the common-hal folder.
This commit is contained in:
Jeff Epler 2021-01-09 13:48:36 -06:00
parent 10861b4038
commit 4735cf4747
7 changed files with 308 additions and 309 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
ports/esp32s2/Makefile
View File

@ -175,7 +175,6 @@ CFLAGS += -DCFG_TUSB_MCU=OPT_MCU_ESP32S2 -DCFG_TUSB_OS=OPT_OS_FREERTOS -DCFG_TUD
SRC_C += \
background.c \
fatfs_port.c \
i2s_common.c \
mphalport.c \
bindings/espidf/__init__.c \
boards/$(BOARD)/board.c \

2
ports/esp32s2/common-hal/audiobusio/I2SOut.h
View File

@ -29,7 +29,7 @@
#include "supervisor/background_callback.h"
#include "common-hal/microcontroller/Pin.h"
#include "i2s_common.h"
#include "common-hal/audiobusio/__init__.h"
// Some boards don't implement I2SOut, so suppress any routines from here.
#if CIRCUITPY_AUDIOBUSIO_I2SOUT

245
ports/esp32s2/common-hal/audiobusio/__init__.c
View File

@ -0,0 +1,245 @@
/*
* 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 <string.h>
#include "py/runtime.h"
#include "common-hal/audiobusio/__init__.h"
#include "bindings/espidf/__init__.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "shared-module/audiocore/__init__.h"
#define I2S_QUEUE_SIZE (3)
static i2s_t *i2s_instance[I2S_NUM_MAX];
static QueueHandle_t i2s_queues[I2S_NUM_MAX];
static TaskHandle_t i2s_tasks[I2S_NUM_MAX];
static int8_t port_i2s_allocate(void) {
#if defined(I2S_NUM_1)
if(!i2s_instance[1]) return 1;
#endif
if(!i2s_instance[0]) return 0;
mp_raise_RuntimeError(translate("Peripheral in use"));
}
void port_i2s_reset_instance(int i) {
assert(i >= 0 && i < I2S_NUM_MAX);
if (i2s_tasks[i]) {
vTaskDelete(i2s_tasks[i]);
}
i2s_tasks[i] = NULL;
(void)i2s_driver_uninstall(i);
i2s_instance[i] = NULL;
}
void i2s_reset(void) {
for (int i=0; i < I2S_NUM_MAX; i++) {
port_i2s_reset_instance(i);
}
}
static void i2s_fill_buffer(i2s_t *self) {
if (self->instance < 0 || self->instance >= I2S_NUM_MAX) {
return;
}
#define STACK_BUFFER_SIZE (512)
int16_t signed_samples[STACK_BUFFER_SIZE / sizeof(int16_t)];
if (!self->playing || self->paused || !self->sample || self->stopping) {
memset(signed_samples, 0, sizeof(signed_samples));
size_t bytes_written = 0;
do {
CHECK_ESP_RESULT(i2s_write(self->instance, signed_samples, sizeof(signed_samples), &bytes_written, 0));
} while (bytes_written != 0);
return;
}
while (!self->stopping) {
if (self->sample_data == self->sample_end) {
uint32_t sample_buffer_length;
audioio_get_buffer_result_t get_buffer_result =
audiosample_get_buffer(self->sample, false, 0,
&self->sample_data, &sample_buffer_length);
self->sample_end = self->sample_data + sample_buffer_length;
if (get_buffer_result == GET_BUFFER_DONE) {
if (self->loop) {
audiosample_reset_buffer(self->sample, false, 0);
} else {
self->stopping = true;
break;
}
}
if (get_buffer_result == GET_BUFFER_ERROR || sample_buffer_length == 0) {
self->stopping = true;
break;
}
}
size_t bytes_written = 0;
size_t bytecount = self->sample_end - self->sample_data;
if (self->samples_signed && self->channel_count == 2) {
if (self->bytes_per_sample == 2) {
CHECK_ESP_RESULT(i2s_write(self->instance, self->sample_data, bytecount, &bytes_written, 0));
} else {
CHECK_ESP_RESULT(i2s_write_expand(self->instance, self->sample_data, bytecount, 8, 16, &bytes_written, 0));
}
} else {
const size_t bytes_per_output_frame = 4;
size_t bytes_per_input_frame = self->channel_count * self->bytes_per_sample;
size_t framecount = MIN(STACK_BUFFER_SIZE / bytes_per_output_frame, bytecount / bytes_per_input_frame);
if (self->samples_signed) {
assert(self->channel_count == 1);
if (self->bytes_per_sample == 1) {
audiosample_convert_s8m_s16s(signed_samples, (int8_t*)(void*)self->sample_data, framecount);
} else {
audiosample_convert_s16m_s16s(signed_samples, (int16_t*)(void*)self->sample_data, framecount);
}
} else {
if (self->channel_count == 1) {
if (self->bytes_per_sample == 1) {
audiosample_convert_u8m_s16s(signed_samples, (uint8_t*)(void*)self->sample_data, framecount);
} else {
audiosample_convert_u16m_s16s(signed_samples, (uint16_t*)(void*)self->sample_data, framecount);
}
} else {
if (self->bytes_per_sample == 1) {
audiosample_convert_u8s_s16s(signed_samples, (uint8_t*)(void*)self->sample_data, framecount);
} else {
audiosample_convert_u16s_s16s(signed_samples, (uint16_t*)(void*)self->sample_data, framecount);
}
}
}
size_t expanded_bytes_written = 0;
CHECK_ESP_RESULT(i2s_write(self->instance, signed_samples, bytes_per_output_frame*framecount, &expanded_bytes_written, 0));
assert(expanded_bytes_written % 4 == 0);
bytes_written = expanded_bytes_written / bytes_per_output_frame * bytes_per_input_frame;
}
self->sample_data += bytes_written;
// We have filled the DMA buffer
if (!bytes_written) {
break;
}
}
}
static void i2s_callback_fun(void *self_in) {
i2s_t *self = self_in;
i2s_fill_buffer(self);
}
static void i2s_event_task(void *self_in) {
i2s_t *self = self_in;
while(true) {
i2s_event_type_t event;
BaseType_t result = xQueueReceive(i2s_queues[self->instance], &event, portMAX_DELAY);
if (result && event == I2S_EVENT_TX_DONE) {
background_callback_add(&self->callback, i2s_callback_fun, self_in);
}
}
}
void port_i2s_allocate_init(i2s_t *self, bool left_justified) {
self->instance = port_i2s_allocate();
i2s_config_t i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_TX,
.sample_rate = 44100,
.bits_per_sample = 16,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = left_justified ? I2S_COMM_FORMAT_STAND_I2S : I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 2,
.dma_buf_len = 128, // in _frames_, so 128 is 512 bytes per dma buf
.use_apll = false,
};
CHECK_ESP_RESULT(i2s_driver_install(self->instance, &i2s_config, I2S_QUEUE_SIZE, &i2s_queues[self->instance]));
if (!xTaskCreate(i2s_event_task, "I2S_task", 3 * configMINIMAL_STACK_SIZE, self, CONFIG_PTHREAD_TASK_PRIO_DEFAULT, &i2s_tasks[self->instance])) {
mp_raise_OSError_msg(translate("xTaskCreate failed"));
}
i2s_instance[self->instance] = self;
}
void port_i2s_play(i2s_t *self, mp_obj_t sample, bool loop) {
self->sample = sample;
self->loop = loop;
self->bytes_per_sample = audiosample_bits_per_sample(sample) / 8;
self->channel_count = audiosample_channel_count(sample);
bool single_buffer;
bool samples_signed;
uint32_t max_buffer_length;
uint8_t spacing;
audiosample_get_buffer_structure(sample, false, &single_buffer, &samples_signed,
&max_buffer_length, &spacing);
self->samples_signed = samples_signed;
self->playing = true;
self->paused = false;
self->stopping = false;
self->sample_data = self->sample_end = NULL;
// We always output stereo so output twice as many bits.
// uint16_t bits_per_sample_output = bits_per_sample * 2;
audiosample_reset_buffer(self->sample, false, 0);
CHECK_ESP_RESULT(i2s_set_sample_rates(self->instance, audiosample_sample_rate(sample)));
background_callback_add(&self->callback, i2s_callback_fun, self);
}
bool port_i2s_playing(i2s_t *self) {
return self->playing && !self->stopping;
}
bool port_i2s_paused(i2s_t *self) {
return self->paused;
}
void port_i2s_stop(i2s_t *self) {
self->sample = NULL;
self->paused = false;
self->playing = false;
self->stopping = false;
}
void port_i2s_pause(i2s_t *self) {
if (!self->paused) {
self->paused = true;
CHECK_ESP_RESULT(i2s_stop(self->instance));
}
}
void port_i2s_resume(i2s_t *self) {
if (self->paused) {
self->paused = false;
CHECK_ESP_RESULT(i2s_start(self->instance));
}
}

61
ports/esp32s2/common-hal/audiobusio/__init__.h
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@ -0,0 +1,61 @@
/*
* 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.
*/
#pragma once
#include "py/obj.h"
#include "supervisor/background_callback.h"
#include "driver/i2s.h"
typedef struct {
mp_obj_t *sample;
bool left_justified;
bool loop;
bool paused;
bool playing;
bool stopping;
bool samples_signed;
int8_t bytes_per_sample;
int8_t channel_count;
int8_t instance;
uint16_t buffer_length;
uint8_t *sample_data, *sample_end;
i2s_config_t i2s_config;
background_callback_t callback;
} i2s_t;
void port_i2s_allocate_init(i2s_t *self, bool left_justified);
void port_i2s_reset_instance(int i);
void i2s_reset(void);
void port_i2s_play(i2s_t *self, mp_obj_t sample, bool loop);
void port_i2s_stop(i2s_t *self);
bool port_i2s_playing(i2s_t *self);
bool port_i2s_paused(i2s_t *self);
void port_i2s_pause(i2s_t *self);
void port_i2s_resume(i2s_t *self);

245
ports/esp32s2/i2s_common.c
View File

@ -1,245 +0,0 @@
/*
* 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 <string.h>
#include "py/runtime.h"
#include "i2s_common.h"
#include "bindings/espidf/__init__.h"
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "shared-module/audiocore/__init__.h"
#define I2S_QUEUE_SIZE (3)
static i2s_t *i2s_instance[I2S_NUM_MAX];
static QueueHandle_t i2s_queues[I2S_NUM_MAX];
static TaskHandle_t i2s_tasks[I2S_NUM_MAX];
static int8_t port_i2s_allocate(void) {
#if defined(I2S_NUM_1)
if(!i2s_instance[1]) return 1;
#endif
if(!i2s_instance[0]) return 0;
mp_raise_RuntimeError(translate("Peripheral in use"));
}
void port_i2s_reset_instance(int i) {
assert(i >= 0 && i < I2S_NUM_MAX);
if (i2s_tasks[i]) {
vTaskDelete(i2s_tasks[i]);
}
i2s_tasks[i] = NULL;
(void)i2s_driver_uninstall(i);
i2s_instance[i] = NULL;
}
void i2s_reset(void) {
for (int i=0; i < I2S_NUM_MAX; i++) {
port_i2s_reset_instance(i);
}
}
static void i2s_fill_buffer(i2s_t *self) {
if (self->instance < 0 || self->instance >= I2S_NUM_MAX) {
return;
}
#define STACK_BUFFER_SIZE (512)
int16_t signed_samples[STACK_BUFFER_SIZE / sizeof(int16_t)];
if (!self->playing || self->paused || !self->sample || self->stopping) {
memset(signed_samples, 0, sizeof(signed_samples));
size_t bytes_written = 0;
do {
CHECK_ESP_RESULT(i2s_write(self->instance, signed_samples, sizeof(signed_samples), &bytes_written, 0));
} while (bytes_written != 0);
return;
}
while (!self->stopping) {
if (self->sample_data == self->sample_end) {
uint32_t sample_buffer_length;
audioio_get_buffer_result_t get_buffer_result =
audiosample_get_buffer(self->sample, false, 0,
&self->sample_data, &sample_buffer_length);
self->sample_end = self->sample_data + sample_buffer_length;
if (get_buffer_result == GET_BUFFER_DONE) {
if (self->loop) {
audiosample_reset_buffer(self->sample, false, 0);
} else {
self->stopping = true;
break;
}
}
if (get_buffer_result == GET_BUFFER_ERROR || sample_buffer_length == 0) {
self->stopping = true;
break;
}
}
size_t bytes_written = 0;
size_t bytecount = self->sample_end - self->sample_data;
if (self->samples_signed && self->channel_count == 2) {
if (self->bytes_per_sample == 2) {
CHECK_ESP_RESULT(i2s_write(self->instance, self->sample_data, bytecount, &bytes_written, 0));
} else {
CHECK_ESP_RESULT(i2s_write_expand(self->instance, self->sample_data, bytecount, 8, 16, &bytes_written, 0));
}
} else {
const size_t bytes_per_output_frame = 4;
size_t bytes_per_input_frame = self->channel_count * self->bytes_per_sample;
size_t framecount = MIN(STACK_BUFFER_SIZE / bytes_per_output_frame, bytecount / bytes_per_input_frame);
if (self->samples_signed) {
assert(self->channel_count == 1);
if (self->bytes_per_sample == 1) {
audiosample_convert_s8m_s16s(signed_samples, (int8_t*)(void*)self->sample_data, framecount);
} else {
audiosample_convert_s16m_s16s(signed_samples, (int16_t*)(void*)self->sample_data, framecount);
}
} else {
if (self->channel_count == 1) {
if (self->bytes_per_sample == 1) {
audiosample_convert_u8m_s16s(signed_samples, (uint8_t*)(void*)self->sample_data, framecount);
} else {
audiosample_convert_u16m_s16s(signed_samples, (uint16_t*)(void*)self->sample_data, framecount);
}
} else {
if (self->bytes_per_sample == 1) {
audiosample_convert_u8s_s16s(signed_samples, (uint8_t*)(void*)self->sample_data, framecount);
} else {
audiosample_convert_u16s_s16s(signed_samples, (uint16_t*)(void*)self->sample_data, framecount);
}
}
}
size_t expanded_bytes_written = 0;
CHECK_ESP_RESULT(i2s_write(self->instance, signed_samples, bytes_per_output_frame*framecount, &expanded_bytes_written, 0));
assert(expanded_bytes_written % 4 == 0);
bytes_written = expanded_bytes_written / bytes_per_output_frame * bytes_per_input_frame;
}
self->sample_data += bytes_written;
// We have filled the DMA buffer
if (!bytes_written) {
break;
}
}
}
static void i2s_callback_fun(void *self_in) {
i2s_t *self = self_in;
i2s_fill_buffer(self);
}
static void i2s_event_task(void *self_in) {
i2s_t *self = self_in;
while(true) {
i2s_event_type_t event;
BaseType_t result = xQueueReceive(i2s_queues[self->instance], &event, portMAX_DELAY);
if (result && event == I2S_EVENT_TX_DONE) {
background_callback_add(&self->callback, i2s_callback_fun, self_in);
}
}
}
void port_i2s_allocate_init(i2s_t *self, bool left_justified) {
self->instance = port_i2s_allocate();
i2s_config_t i2s_config = {
.mode = I2S_MODE_MASTER | I2S_MODE_TX,
.sample_rate = 44100,
.bits_per_sample = 16,
.channel_format = I2S_CHANNEL_FMT_RIGHT_LEFT,
.communication_format = left_justified ? I2S_COMM_FORMAT_STAND_I2S : I2S_COMM_FORMAT_STAND_I2S,
.dma_buf_count = 2,
.dma_buf_len = 128, // in _frames_, so 128 is 512 bytes per dma buf
.use_apll = false,
};
CHECK_ESP_RESULT(i2s_driver_install(self->instance, &i2s_config, I2S_QUEUE_SIZE, &i2s_queues[self->instance]));
if (!xTaskCreate(i2s_event_task, "I2S_task", 3 * configMINIMAL_STACK_SIZE, self, CONFIG_PTHREAD_TASK_PRIO_DEFAULT, &i2s_tasks[self->instance])) {
mp_raise_OSError_msg(translate("xTaskCreate failed"));
}
i2s_instance[self->instance] = self;
}
void port_i2s_play(i2s_t *self, mp_obj_t sample, bool loop) {
self->sample = sample;
self->loop = loop;
self->bytes_per_sample = audiosample_bits_per_sample(sample) / 8;
self->channel_count = audiosample_channel_count(sample);
bool single_buffer;
bool samples_signed;
uint32_t max_buffer_length;
uint8_t spacing;
audiosample_get_buffer_structure(sample, false, &single_buffer, &samples_signed,
&max_buffer_length, &spacing);
self->samples_signed = samples_signed;
self->playing = true;
self->paused = false;
self->stopping = false;
self->sample_data = self->sample_end = NULL;
// We always output stereo so output twice as many bits.
// uint16_t bits_per_sample_output = bits_per_sample * 2;
audiosample_reset_buffer(self->sample, false, 0);
CHECK_ESP_RESULT(i2s_set_sample_rates(self->instance, audiosample_sample_rate(sample)));
background_callback_add(&self->callback, i2s_callback_fun, self);
}
bool port_i2s_playing(i2s_t *self) {
return self->playing && !self->stopping;
}
bool port_i2s_paused(i2s_t *self) {
return self->paused;
}
void port_i2s_stop(i2s_t *self) {
self->sample = NULL;
self->paused = false;
self->playing = false;
self->stopping = false;
}
void port_i2s_pause(i2s_t *self) {
if (!self->paused) {
self->paused = true;
CHECK_ESP_RESULT(i2s_stop(self->instance));
}
}
void port_i2s_resume(i2s_t *self) {
if (self->paused) {
self->paused = false;
CHECK_ESP_RESULT(i2s_start(self->instance));
}
}

61
ports/esp32s2/i2s_common.h
View File

@ -1,61 +0,0 @@
/*
* 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.
*/
#pragma once
#include "py/obj.h"
#include "supervisor/background_callback.h"
#include "driver/i2s.h"
typedef struct {
mp_obj_t *sample;
bool left_justified;
bool loop;
bool paused;
bool playing;
bool stopping;
bool samples_signed;
int8_t bytes_per_sample;
int8_t channel_count;
int8_t instance;
uint16_t buffer_length;
uint8_t *sample_data, *sample_end;
i2s_config_t i2s_config;
background_callback_t callback;
} i2s_t;
void port_i2s_allocate_init(i2s_t *self, bool left_justified);
void port_i2s_reset_instance(int i);
void i2s_reset(void);
void port_i2s_play(i2s_t *self, mp_obj_t sample, bool loop);
void port_i2s_stop(i2s_t *self);
bool port_i2s_playing(i2s_t *self);
bool port_i2s_paused(i2s_t *self);
void port_i2s_pause(i2s_t *self);
void port_i2s_resume(i2s_t *self);

2
ports/esp32s2/supervisor/port.c
View File

@ -62,7 +62,7 @@
#include "components/soc/soc/esp32s2/include/soc/rtc_cntl_reg.h"
#if CIRCUITPY_AUDIOBUSIO
#include "i2s_common.h"
#include "common-hal/audiobusio/__init__.h"
#endif
#define HEAP_SIZE (48 * 1024)