Input Serial Plotter

/*

 This example reads audio data from an Invensense's ICS43432 I2S microphone

 breakout board, and prints out the samples to the Serial console. The

 Serial Plotter built into the Arduino IDE can be used to plot the audio

 data (Tools -> Serial Plotter)

 Circuit:

 * Arduino Zero, MKR family and Nano 33 IoT

 * ICS43432:

   * GND connected GND

   * 3.3V connected to 3.3V (Zero, Nano) or VCC (MKR)

   * WS connected to pin 0 (Zero) or 3 (MKR) or A2 (Nano)

   * CLK connected to pin 1 (Zero) or 2 (MKR) or A3 (Nano)

   * SD connected to pin 9 (Zero) or A6 (MKR) or 4 (Nano)

 created 17 November 2016

 by Sandeep Mistry

 */

#include <I2S.h>

void setup() {

  // Open serial communications and wait for port to open:

  // A baud rate of 115200 is used instead of 9600 for a faster data rate

  // on non-native USB ports

  Serial.begin(115200);

  while (!Serial) {

    ; // wait for serial port to connect. Needed for native USB port only

  }

  // start I2S at 8 kHz with 32-bits per sample

  if (!I2S.begin(I2S_PHILIPS_MODE, 8000, 32)) {

    Serial.println("Failed to initialize I2S!");

    while (1); // do nothing

  }
}

void loop() {

  // read a sample

  int sample = I2S.read();

  if (sample) {

    // if it's non-zero print value to serial

    Serial.println(sample);

  }
}