Amplitude Serial Plotter

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1/*
2
3 This example reads audio data from an Invensense's ICS43432 I2S microphone
4
5 breakout board, and prints out the amplitude to the Serial console. The
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7 Serial Plotter built into the Arduino IDE can be used to plot the audio
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9 amplitude data (Tools -> Serial Plotter)
10
11 Circuit:
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13 * Arduino Zero, MKRZero or MKR1000 board
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15 * ICS43432:
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17   * GND connected GND
18
19   * 3.3V connected 3.3V (Zero) or VCC (MKR1000, MKRZero)
20
21   * WS connected to pin 0 (Zero) or pin 3 (MKR1000, MKRZero)
22
23   * CLK connected to pin 1 (Zero) or pin 2 (MKR1000, MKRZero)
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25   * SD connected to pin 9 (Zero) or pin A6 (MKR1000, MKRZero)
26
27 created 23 November 2016
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29 by Sandeep Mistry
30
31 */
32
33#include <ArduinoSound.h>
34
35// create an amplitude analyzer to be used with the I2S input
36
37AmplitudeAnalyzer amplitudeAnalyzer;
38
39void setup() {
40
41  // Open serial communications and wait for port to open:
42
43  // A baud rate of 115200 is used instead of 9600 for a faster data rate
44
45  // on non-native USB ports
46
47  Serial.begin(115200);
48
49  while (!Serial) {
50
51    ; // wait for serial port to connect. Needed for native USB port only
52
53  }
54
55  // setup the I2S audio input for 44.1 kHz with 32-bits per sample
56
57  if (!AudioInI2S.begin(44100, 32)) {
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59    Serial.println("Failed to initialize I2S input!");
60
61    while (1); // do nothing
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63  }
64
65  // configure the I2S input as the input for the amplitude analyzer
66
67  if (!amplitudeAnalyzer.input(AudioInI2S)) {
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69    Serial.println("Failed to set amplitude analyzer input!");
70
71    while (1); // do nothing
72
73  }
74}
75
76void loop() {
77
78  // check if a new analysis is available
79
80  if (amplitudeAnalyzer.available()) {
81
82    // read the new amplitude
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84    int amplitude = amplitudeAnalyzer.read();
85
86    // print out the amplititude to the serial monitor
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88    Serial.println(amplitude);
89
90  }
91}