HengYongChao

Got it, thanks for your answer.

Hi @spaceMan00 ```c I (4143) TCP_CLIENT_EXAMPLE: [ 5 ] Start audio_pipeline E (4153) TRANSPORT_BASE: Failed to open a new connection: 258 Guru Meditation Error: Core 0 panic'ed (StoreProhibited). Exception was...

Hi @spaceMan00 ```c static int tcp_connect(esp_transport_handle_t t, const char *host, int port, int timeout_ms) { transport_esp_tls_t *ssl = ssl_get_context_data(t); esp_tls_last_error_t *err_handle = esp_transport_get_error_handle(t); ssl->cfg.timeout_ms = timeout_ms; esp_err_t err = esp_tls_plain_tcp_connect(host,...

Hi @spaceMan00 @piligrim-a3 We refind this issue, will fix asap.

Hi @teddykishi Yes, GPIO4 is the optional pin of the four-wire sdcard, and GPIO39 is the input pin of the ADC button of the development board. Please check here. https://docs.espressif.com/projects/esp-adf/en/latest/design-guide/dev-boards/get-started-esp32-lyrat-mini.html

Hi @teddykishi Please refer to [check_board_buttons](https://github.com/espressif/esp-adf/tree/master/examples/checks/check_board_buttons) example.

Hi @mparker-landt ESP32 has two I2S peripheral interfaces, so your application can be done in principle.

Hi @mparker-landt Why not try [downmix pipeline process](https://github.com/espressif/esp-adf/tree/master/examples/advanced_examples/downmix_pipeline)? And it only use one I2S interface, also can mix up to 8 channel wav format tracks to play.

When outputting i2s stream, you just set to output one channel only.

Hi @CAIJUN111 Please check the [pipeline_flash_tone](https://github.com/espressif/esp-adf/tree/master/examples/player/pipeline_flash_tone) example. code belows: ```c ESP_LOGI(TAG, "[2.6] Set up uri (file as tone_stream, mp3 as mp3 decoder, and default output is i2s)"); audio_element_set_uri(tone_stream_reader, tone_uri[TONE_TYPE_HELLO]); ```