I'm using an ESP32-PICO-MINI-02 as I2S-Receiver in slave mode. On the other end there is an ESP32-S3 sending data as I2S-Transmitter in master mode. The transmission is correctly, because there is a second participant (an I2S-Amp) listening, working just fine. I am using esp-idf 5.5.
Sadly the i2s_channel_read function runs into a timeout.
Has anybody solved this kind of problem or got any suggestions?
I already tried to connect the mclk lane, changing the pins and so on, but it does not change anything. Still no correct reading just a timeout.
Here some code for prober investigations:
Code: Select all
i2s_chan_config_t chan_cfg = I2S_CHANNEL_DEFAULT_CONFIG(I2S_NUM_AUTO, I2S_ROLE_SLAVE);
/* Allocate a new RX channel and get the handle of this channel */
i2s_new_channel(&chan_cfg, NULL, &rx_handle);
/* Setting the configurations, the slot configuration and clock configuration can be generated by the macros
* These two helper macros are defined in `i2s_std.h` which can only be used in STD mode.
* They can help to specify the slot and clock configurations for initialization or updating */
i2s_std_config_t std_cfg = {
.clk_cfg = I2S_STD_CLK_DEFAULT_CONFIG(44100),
.slot_cfg = I2S_STD_MSB_SLOT_DEFAULT_CONFIG(I2S_DATA_BIT_WIDTH_8BIT, I2S_SLOT_MODE_STEREO),
.gpio_cfg = {
.mclk = GPIO_NUM_NC,
.bclk = PIN_NUM_BCLK,
.ws = PIN_NUM_WS,
.dout = GPIO_NUM_NC,
.din = PIN_NUM_DIN,
.invert_flags = {
.mclk_inv = false,
.bclk_inv = false,
.ws_inv = false,
},
},
};
/* Initialize the channel */
i2s_channel_init_std_mode(rx_handle, &std_cfg);
/* Task where i2s_read() is called */
xTaskCreatePinnedToCore(i2s_listen_task, "read", 8*1024, NULL, 8, NULL, 1);
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/* Callback were i2s_read() writes into a buffer */
static void i2s_listen_task(void *param)
{
i2s_channel_enable(rx_handle);
size_t bytes_read = 0;
int w_index = 0;
for(;;) {
if(i2s_channel_read(rx_handle, AUDIO_BUFFER[w_index], AUD_BUF_SIZE, &bytes_read, 1000) == ESP_ERR_TIMEOUT )
{
ESP_LOGE("I2S", "TIMEOUT WHILE READING");
}
}
}