Pastein: #include <zephyr/kernel.h> #include "codec.h" #include <zephyr/sys/printk.h> #include <zephyr/drivers/i2s.h> #include <zephyr/drivers/gpio.h> #include <zephyr/audio/codec.h> #include <string.h>

Загрузка данных
#include <zephyr/kernel.h>
#include "codec.h"
#include <zephyr/sys/printk.h>
#include <zephyr/drivers/i2s.h>
#include <zephyr/drivers/gpio.h>
#include <zephyr/audio/codec.h>
#include <string.h>

/* Так как мы разделили RX и TX аппаратно, макросы всегда будут брать разные ноды */
#define I2S_RX_NODE  DT_NODELABEL(sai2)
#define I2S_TX_NODE  DT_NODELABEL(sai2)

#define AUDIO_MCLK_FREQ 12288000
#ifdef MY_CODE
#define SAMPLE_FREQUENCY    44100
#else
#define SAMPLE_FREQUENCY    8000
#endif
#define SAMPLE_BIT_WIDTH    16
#define BYTES_PER_SAMPLE    sizeof(int16_t)
#define NUMBER_OF_CHANNELS  2

#define SAMPLES_PER_BLOCK   ((SAMPLE_FREQUENCY / 10) * NUMBER_OF_CHANNELS)
#define INITIAL_BLOCKS      2
#define TIMEOUT             1000

#define BLOCK_SIZE  (BYTES_PER_SAMPLE * SAMPLES_PER_BLOCK)
#define BLOCK_COUNT (INITIAL_BLOCKS + 4)
K_MEM_SLAB_DEFINE_STATIC(mem_slab, BLOCK_SIZE, BLOCK_COUNT, 4);

static int16_t echo_block[SAMPLES_PER_BLOCK];
static volatile bool echo_enabled = false;
static K_SEM_DEFINE(toggle_transfer, 1, 1);

/* Оставляем функции кнопок без изменений */
#define SW0_NODE        DT_ALIAS(sw0)
#ifdef CONFIG_TOGGLE_ECHO_EFFECT_SW0
static struct gpio_dt_spec sw0_spec = GPIO_DT_SPEC_GET(SW0_NODE, gpios);
static void sw0_handler(const struct device *dev, struct gpio_callback *cb, uint32_t pins)
{
	bool enable = !echo_enabled;
	echo_enabled = enable;
	printk("Echo %sabled\n", (enable ? "en" : "dis"));
}
#endif

#define SW1_NODE        DT_ALIAS(sw1)
#ifdef CONFIG_STOP_START_STREAMS_SW1
static struct gpio_dt_spec sw1_spec = GPIO_DT_SPEC_GET(SW1_NODE, gpios);
static void sw1_handler(const struct device *dev, struct gpio_callback *cb, uint32_t pins)
{
	k_sem_give(&toggle_transfer);
}
#endif

static bool init_buttons(void)
{
	int ret;
#ifdef CONFIG_TOGGLE_ECHO_EFFECT_SW0
	static struct gpio_callback sw0_cb_data;
	if (!gpio_is_ready_dt(&sw0_spec)) return false;
	gpio_pin_configure_dt(&sw0_spec, GPIO_INPUT);
	gpio_pin_interrupt_configure_dt(&sw0_spec, GPIO_INT_EDGE_TO_ACTIVE);
	gpio_init_callback(&sw0_cb_data, sw0_handler, BIT(sw0_spec.pin));
	gpio_add_callback(sw0_spec.port, &sw0_cb_data);
#endif
#ifdef CONFIG_STOP_START_STREAMS_SW1
	static struct gpio_callback sw1_cb_data;
	if (!gpio_is_ready_dt(&sw1_spec)) return false;
	gpio_pin_configure_dt(&sw1_spec, GPIO_INPUT);
	gpio_pin_interrupt_configure_dt(&sw1_spec, GPIO_INT_EDGE_TO_ACTIVE);
	gpio_init_callback(&sw1_cb_data, sw1_handler, BIT(sw1_spec.pin));
	gpio_add_callback(sw1_spec.port, &sw1_cb_data);
#endif
	(void)ret;
	return true;
}

static void process_block_data(void *mem_block, uint32_t number_of_samples)
{
	static bool clear_echo_block;
	if (echo_enabled) {
		for (int i = 0; i < number_of_samples; ++i) {
			int16_t *sample = &((int16_t *)mem_block)[i];
			*sample += echo_block[i];
			echo_block[i] = (*sample) / 2;
		}
		clear_echo_block = true;
	} else if (clear_echo_block) {
		clear_echo_block = false;
		memset(echo_block, 0, sizeof(echo_block));
	}
}

/* Функция конфигурации потоков теперь СТРОГО разделяет RX и TX каналы */
static bool configure_streams(const struct device *i2s_dev_rx,
			      const struct device *i2s_dev_tx,
			      const struct i2s_config *config)
{
	int ret;

	/* Настраиваем RX поток на блоке SAI2 для кодека SGTL5000 */
	ret = i2s_configure(i2s_dev_rx, I2S_DIR_RX, config);
	if (ret < 0) {
		printk("Failed to configure RX stream: %d\n", ret);
		return false;
	}

	/* Настраиваем TX поток на блоке SAI2 для усилителя TFA9882 */
	ret = i2s_configure(i2s_dev_tx, I2S_DIR_TX, config);
	if (ret < 0) {
		printk("Failed to configure TX stream: %d\n", ret);
		return false;
	}

	return true;
}

static bool prepare_transfer(const struct device *i2s_dev_rx,
			     const struct device *i2s_dev_tx)
{
	int ret;
	for (int i = 0; i < INITIAL_BLOCKS; ++i) {
		void *mem_block;
		ret = k_mem_slab_alloc(&mem_slab, &mem_block, K_NO_WAIT);
		if (ret < 0) return false;
		memset(mem_block, 0, BLOCK_SIZE);
		ret = i2s_write(i2s_dev_tx, mem_block, BLOCK_SIZE);
		if (ret < 0) return false;
	}
	return true;
}

/* Триггер команд также жестко разносится на независимые вызовы */
static bool trigger_command(const struct device *i2s_dev_rx,
			    const struct device *i2s_dev_tx,
			    enum i2s_trigger_cmd cmd)
{
	int ret;

	ret = i2s_trigger(i2s_dev_rx, I2S_DIR_RX, cmd);
	if (ret < 0) {
		printk("Failed to trigger command %d on RX: %d\n", cmd, ret);
		return false;
	}

	ret = i2s_trigger(i2s_dev_tx, I2S_DIR_TX, cmd);
	if (ret < 0) {
		printk("Failed to trigger command %d on TX: %d\n", cmd, ret);
		return false;
	}

	return true;
}

int main(void)
{
	const struct device *const i2s_dev_rx = DEVICE_DT_GET(I2S_RX_NODE);
	const struct device *const i2s_dev_tx = DEVICE_DT_GET(I2S_TX_NODE);
	struct i2s_config config;

	printk("I2S asynchronous Audio: SGTL5000 (RX) & TFA9882 (TX)\n");

	/* Получаем ссылки на оба независимых кодека */
	const struct device *const sgtl5000_dev = DEVICE_DT_GET(DT_NODELABEL(sgtl5000_codec));
	const struct device *const tfa9882_dev = DEVICE_DT_GET(DT_NODELABEL(tfa9882_codec));
	struct audio_codec_cfg audio_cfg;

	if (!device_is_ready(sgtl5000_dev)) {
		printk("SGTL5000 codec is not ready\n");
		return 0;
	}

	/* 1. Конфигурируем SGTL5000 строго на Запись (Capture) */
	audio_cfg.dai_route = AUDIO_ROUTE_CAPTURE;
	audio_cfg.dai_type = AUDIO_DAI_TYPE_I2S;
	audio_cfg.dai_cfg.i2s.word_size = SAMPLE_BIT_WIDTH;
	audio_cfg.dai_cfg.i2s.channels = NUMBER_OF_CHANNELS;
	audio_cfg.dai_cfg.i2s.format = I2S_FMT_DATA_FORMAT_I2S;
	audio_cfg.dai_cfg.i2s.options = I2S_OPT_BIT_CLK_SLAVE | I2S_OPT_FRAME_CLK_SLAVE;
	audio_cfg.dai_cfg.i2s.frame_clk_freq = SAMPLE_FREQUENCY;
	audio_cfg.dai_cfg.i2s.mem_slab = &mem_slab;
	audio_cfg.dai_cfg.i2s.block_size = BLOCK_SIZE;
	audio_cfg.mclk_freq = AUDIO_MCLK_FREQ;
	
	audio_codec_configure(sgtl5000_dev, &audio_cfg);

	/* 2. Конфигурируем TFA9882 строго на Воспроизведение (Playback) */
	audio_cfg.dai_route = AUDIO_ROUTE_PLAYBACK;
	audio_cfg.dai_cfg.i2s.options = I2S_OPT_BIT_CLK_SLAVE | I2S_OPT_FRAME_CLK_SLAVE;
	
	audio_codec_configure(tfa9882_dev, &audio_cfg);
	k_msleep(500);

	if (!init_buttons()) return 0;

	if (!device_is_ready(i2s_dev_rx) || !device_is_ready(i2s_dev_tx)) {
		printk("SAI2 Devices are not ready\n");
		return 0;
	}

	/* 3. Настройка параметров шины I2S/SAI2 (Процессор — Мастер для обеих секций) */
	config.word_size = SAMPLE_BIT_WIDTH;
	config.channels = NUMBER_OF_CHANNELS;
	config.format = I2S_FMT_DATA_FORMAT_I2S;
	config.options = I2S_OPT_BIT_CLK_MASTER | I2S_OPT_FRAME_CLK_MASTER;
	config.frame_clk_freq = SAMPLE_FREQUENCY;
	config.mem_slab = &mem_slab;
	config.block_size = BLOCK_SIZE;
	config.timeout = TIMEOUT;

	if (!configure_streams(i2s_dev_rx, i2s_dev_tx, &config)) {
		return 0;
	}

	/* Бесконечный цикл обработки звукового потока (Эхо-эффект) */
	for (;;) {
		k_sem_take(&toggle_transfer, K_FOREVER);

		if (!prepare_transfer(i2s_dev_rx, i2s_dev_tx)) {
			break;
		}

		if (!trigger_command(i2s_dev_rx, i2s_dev_tx, I2S_TRIGGER_START)) {
			break;
		}

		printk("Streams started\n");

		while (k_sem_take(&toggle_transfer, K_NO_WAIT) == -EBUSY) {
			void *mem_block;
			size_t block_size;
			int ret;

			/* Читаем блок данных с микрофона кодека SGTL5000 */
			ret = i2s_read(i2s_dev_rx, &mem_block, &block_size);
			if (ret < 0) {
				printk("i2s_read failed: %d\n", ret);
				break;
			}

			/* Обрабатываем аудио-блок (накладываем эхо) */
			process_block_data(mem_block, block_size / BYTES_PER_SAMPLE);

			/* Отправляем обработанный блок в динамик усилителя TFA9882 */
			ret = i2s_write(i2s_dev_tx, mem_block, block_size);
			if (ret < 0) {
				printk("i2s_write failed: %d\n", ret);
				k_mem_slab_free(&mem_slab, mem_block);
				break;
			}
		}

		if (!trigger_command(i2s_dev_rx, i2s_dev_tx, I2S_TRIGGER_DROP)) {
			break;
		}

		printk("Streams stopped\n");
	}

	return 0;
}
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