mirror of
https://github.com/espressif/esp-idf.git
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200 lines
6.9 KiB
C
200 lines
6.9 KiB
C
/*
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* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: CC0-1.0
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*/
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#include <stdio.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "driver/i2s_std.h"
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#include "esp_system.h"
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#include "esp_check.h"
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#include "es8311.h"
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/* I2C port and GPIOs */
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#define I2C_NUM (0)
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#ifdef CONFIG_IDF_TARGET_ESP32C3
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#define I2C_SDA_IO (GPIO_NUM_17)
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#define I2C_SCL_IO (GPIO_NUM_16)
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#else
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#define I2C_SDA_IO (GPIO_NUM_15)
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#define I2C_SCL_IO (GPIO_NUM_14)
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#endif
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/* I2S port and GPIOs */
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#define I2S_NUM (0)
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#define I2S_MCK_IO (GPIO_NUM_0)
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#define I2S_BCK_IO (GPIO_NUM_4)
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#define I2S_WS_IO (GPIO_NUM_5)
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#define I2S_DO_IO (GPIO_NUM_18)
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#define I2S_DI_IO (GPIO_NUM_19)
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/* Example configurations */
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#define EXAMPLE_RECV_BUF_SIZE (2048)
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#define EXAMPLE_SAMPLE_RATE (16000)
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#define EXAMPLE_MCLK_MULTIPLE (256)
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#define EXAMPLE_VOICE_VOLUME CONFIG_EXAMPLE_VOICE_VOLUME
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#if CONFIG_EXAMPLE_MODE_ECHO
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#define EXAMPLE_MIC_GAIN CONFIG_EXAMPLE_MIC_GAIN
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#endif
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static const char *TAG = "i2s_es8311";
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static const char err_reason[][30] = {"input param is invalid",
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"operation timeout"
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};
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static i2s_chan_handle_t tx_handle = NULL;
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static i2s_chan_handle_t rx_handle = NULL;
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/* Import music file as buffer */
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#if CONFIG_EXAMPLE_MODE_MUSIC
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extern const uint8_t music_pcm_start[] asm("_binary_canon_pcm_start");
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extern const uint8_t music_pcm_end[] asm("_binary_canon_pcm_end");
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#endif
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static esp_err_t es8311_codec_init(void)
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{
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/* Initialize I2C peripheral */
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i2c_config_t es_i2c_cfg = {
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.sda_io_num = I2C_SDA_IO,
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.scl_io_num = I2C_SCL_IO,
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.mode = I2C_MODE_MASTER,
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.master.clk_speed = 100000,
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};
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ESP_RETURN_ON_ERROR(i2c_param_config(I2C_NUM, &es_i2c_cfg), TAG, "config i2c failed");
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ESP_RETURN_ON_ERROR(i2c_driver_install(I2C_NUM, I2C_MODE_MASTER, 0, 0, 0), TAG, "install i2c driver failed");
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/* Initialize es8311 codec */
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es8311_handle_t es_handle = es8311_create(I2C_NUM, ES8311_ADDRRES_0);
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ESP_RETURN_ON_FALSE(es_handle, ESP_FAIL, TAG, "es8311 create failed");
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es8311_clock_config_t es_clk = {
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.mclk_from_mclk_pin = true,
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.sample_frequency = EXAMPLE_SAMPLE_RATE
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};
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ESP_ERROR_CHECK(es8311_init(es_handle, &es_clk, ES8311_RESOLUTION_16, ES8311_RESOLUTION_16));
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ESP_RETURN_ON_ERROR(es8311_sample_frequency_config(es_handle, EXAMPLE_SAMPLE_RATE * EXAMPLE_MCLK_MULTIPLE, EXAMPLE_SAMPLE_RATE), TAG, "set es8311 sample frequency failed");
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ESP_RETURN_ON_ERROR(es8311_voice_volume_set(es_handle, EXAMPLE_VOICE_VOLUME, NULL), TAG, "set es8311 volume failed");
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ESP_RETURN_ON_ERROR(es8311_microphone_config(es_handle, false), TAG, "set es8311 microphone failed");
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#if CONFIG_EXAMPLE_MODE_ECHO
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ESP_RETURN_ON_ERROR(es8311_microphone_gain_set(es_handle, EXAMPLE_MIC_GAIN), TAG, "set es8311 microphone gain faield");
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#endif
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return ESP_OK;
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}
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static esp_err_t i2s_driver_init(void)
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{
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i2s_chan_config_t chan_cfg = I2S_CHANNEL_DEFAULT_CONFIG(I2S_NUM, I2S_ROLE_MASTER);
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ESP_ERROR_CHECK(i2s_new_channel(&chan_cfg, &tx_handle, &rx_handle));
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i2s_std_config_t std_cfg = {
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.clk_cfg = I2S_STD_CLK_DEFAULT_CONFIG(EXAMPLE_SAMPLE_RATE),
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.slot_cfg = I2S_STD_PHILIP_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_16BIT, I2S_SLOT_MODE_STEREO),
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.gpio_cfg = {
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.mclk = GPIO_NUM_0,
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.bclk = GPIO_NUM_4,
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.ws = GPIO_NUM_5,
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.dout = GPIO_NUM_18,
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.din = GPIO_NUM_19
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},
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};
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ESP_ERROR_CHECK(i2s_init_std_channel(tx_handle, &std_cfg));
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ESP_ERROR_CHECK(i2s_init_std_channel(rx_handle, &std_cfg));
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ESP_ERROR_CHECK(i2s_start_channel(tx_handle));
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ESP_ERROR_CHECK(i2s_start_channel(rx_handle));
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return ESP_OK;
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}
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#if CONFIG_EXAMPLE_MODE_MUSIC
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static void i2s_music(void *args)
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{
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esp_err_t ret = ESP_OK;
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size_t bytes_write = 0;
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if (tx_handle == NULL) {
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ESP_LOGE(TAG, "[music] i2s tx channel has not been registered yet");
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abort();
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}
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while (1) {
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/* Write music to earphone */
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ret = i2s_write_channel(tx_handle, music_pcm_start, music_pcm_end - music_pcm_start, &bytes_write, portMAX_DELAY);
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if (ret != ESP_OK) {
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/* Since we set timeout to 'portMAX_DELAY' in 'i2s_write_channel'
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so you won't reach here unless you set other timeout value,
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if timeout detected, it means write operation failed. */
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ESP_LOGE(TAG, "[music] i2s read failed, %s", err_reason[ret == ESP_ERR_TIMEOUT]);
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abort();
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}
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if (bytes_write > 0) {
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ESP_LOGI(TAG, "[music] i2s music played, %d bytes are written.", bytes_write);
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} else {
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ESP_LOGE(TAG, "[music] i2s music play falied.");
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abort();
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}
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vTaskDelay(1000 / portTICK_PERIOD_MS);
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}
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vTaskDelete(NULL);
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}
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#else
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static void i2s_echo(void *args)
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{
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if (rx_handle == NULL || tx_handle == NULL) {
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ESP_LOGE(TAG, "[echo] i2s rx or tx channel has not been registered yet");
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abort();
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}
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int *mic_data = malloc(EXAMPLE_RECV_BUF_SIZE);
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if (!mic_data) {
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ESP_LOGE(TAG, "[echo] No memory for read data buffer");
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abort();
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}
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esp_err_t ret = ESP_OK;
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size_t bytes_read = 0;
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size_t bytes_write = 0;
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ESP_LOGI(TAG, "[echo] Echo start");
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while (1) {
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memset(mic_data, 0, EXAMPLE_RECV_BUF_SIZE);
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/* Read sample data from mic */
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ret = i2s_read_channel(rx_handle, mic_data, EXAMPLE_RECV_BUF_SIZE, &bytes_read, 100);
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "[echo] i2s read failed, %s", err_reason[ret == ESP_ERR_TIMEOUT]);
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abort();
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}
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/* Write sample data to earphone */
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ret = i2s_write_channel(tx_handle, mic_data, EXAMPLE_RECV_BUF_SIZE, &bytes_write, 100);
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if (ret != ESP_OK) {
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ESP_LOGE(TAG, "[echo] i2s write failed, %s", err_reason[ret == ESP_ERR_TIMEOUT]);
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abort();
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}
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if (bytes_read != bytes_write) {
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ESP_LOGW(TAG, "[echo] %d bytes read but only %d bytes are written", bytes_read, bytes_write);
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}
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}
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vTaskDelete(NULL);
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}
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#endif
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void app_main(void)
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{
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/* Initialize i2s peripheral */
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if (i2s_driver_init() != ESP_OK) {
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ESP_LOGE(TAG, "i2s driver init failed");
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abort();
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}
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/* Initialize i2c peripheral and config es8311 codec by i2c */
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if (es8311_codec_init() != ESP_OK) {
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ESP_LOGE(TAG, "es8311 codec init failed");
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abort();
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}
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#if CONFIG_EXAMPLE_MODE_MUSIC
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/* Play a piece of music in music mode */
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xTaskCreate(i2s_music, "i2s_music", 4096, NULL, 5, NULL);
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#else
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/* Echo the sound from MIC in echo mode */
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xTaskCreate(i2s_echo, "i2s_echo", 8192, NULL, 5, NULL);
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#endif
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}
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