ESP32-S3 ADF Voip Example Port I2S1 Not Working for Microphone

[newguy001]

AUDIO DEV BOARD: ESP32-S3-Korvo-2 V3.0
ESP IDF 4.4
I want to use I2S1 for VOIP Example here: https://github.com/espressif/esp-adf/bl ... voip_app.c

The only change I made in the example is as follows:

Code: [Select all] [Expand/Collapse]

1. .....
2. #define I2S1_CHANNELS       I2S_CHANNEL_FMT_ONLY_LEFT
3. .....
4. int ret = i2s_write_expand(I2S_NUM_1, buf, len, 16, I2S_BITS, &bytes_write, wait_time);
5. ......
6. i2s_driver_init(I2S_NUM_1, I2S1_CHANNELS, I2S_BITS);
7. .....
8.  audio_player_int_tone_init(I2S_SAMPLE_RATE, I2S1_CHANNELS, I2S_BITS);
9. ....

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https://github.com/espressif/esp-adf/bl ... s_config.c

Code: [Select all] [Expand/Collapse]

1. .....
2. esp_err_t get_i2s_pins(i2s_port_t port, i2s_pin_config_t *i2s_config)
3. {
4.     AUDIO_NULL_CHECK(TAG, i2s_config, return ESP_FAIL);
5.     if (port == I2S_NUM_0) {
6.         i2s_config->bck_io_num = -1;
7.         i2s_config->ws_io_num = -1;
8.         i2s_config->data_out_num = -1;
9.         i2s_config->data_in_num = -1;
10.         i2s_config->mck_io_num = -1;
11.     } else if (port == I2S_NUM_1) {
12.         i2s_config-> bck_io_num = GPIO_NUM_9;
13.         i2s_config->ws_io_num = GPIO_NUM_45;
14.         i2s_config->data_out_num = GPIO_NUM_8;
15.         i2s_config->data_in_num = GPIO_NUM_10;
16.         i2s_config->mck_io_num = GPIO_NUM_16;
17.     } else {
18.         memset(i2s_config, -1, sizeof(i2s_pin_config_t));
19.         ESP_LOGE(TAG, "i2s port %d is not supported", port);
20.         return ESP_FAIL;
21.     }
22.  
23.     return ESP_OK;
24. }

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PROBLEM
The audio from speaker is working; however, the two microphones on the ESP32-S3-Korvo-2 V3.0, are not sending any voice i.e microphones stopped working.
When I revert back my changes to I2S0, everything is working.

Really need little guidance here!!!

Thanks

[tempo.tian]

Have you change the code below:
int ret = i2s_read(CODEC_ADC_I2S_PORT, buf, len, &bytes_read, wait_time);
changed to
int ret = i2s_read(1, buf, len, &bytes_read, wait_time);

For that record and playback use same I2S.

[newguy001]

Thanks a lot . Now both Mic and Speaker are working!