Hello, we have a device with an ST-MEMS microphone IMP34DT05 on an ESP32 device, it worked with the idf 4.x.x. Here is the configuration: #define ICS41350_PIN_CLK 4 #define ICS41350_PIN_DATA 2 void ICS41350_init(void) { i2s_pin_config_t pin_config; pin_config.bck_io_num = I2S_PIN_NO_CHANGE; pin_conf...