soundboard/src/main.cpp

/**
 * ESP32 Soundboard
 *
 * Hendriks Projekt
 *
 * https://dev.xd0.de/hendrik/soundboard
 */
#include "Arduino.h"

#include "keyboard.h"
#include "sdcard.h"
#include "sound.h"

#define VERSION "0.0"
#define LED_PIN 21

Keyboard keyboard;
SDCard sdcard;
Sound sound;

uint16_t buffer[2048];

void setup()
{
  // initialize LED digital pin as an output.
  pinMode(LED_PIN, OUTPUT);
  Serial.begin(115200);
  Serial.println("-------------------------------------");
  Serial.print("Soundboard v.");
  Serial.println(VERSION);
  Serial.println("https://dev.xd0.de/hendrik/soundboard");
  Serial.println("-------------------------------------");

  keyboard.init();
  sdcard.mount();
  sound.init();
  sdcard.open("/sabaton.wav");
  int num_bytes_i = 0;
  int num_bytes_o = 0;
  while (sdcard.available()) {
    num_bytes_i += sdcard.read(buffer, 2048);
    num_bytes_o += sound.render_sample_block(buffer, buffer, 2048);
    Serial.print(".");
  }
  sdcard.close();
  Serial.println("");
  Serial.print(num_bytes_i,DEC);
  Serial.println(" bytes read from file");
  Serial.print(num_bytes_o,DEC);
  Serial.println(" bytes written to i2s");
  delay(1000);
}

void loop()
{
  bool touched = false;
  for(int i=0; i<=9; i++) {
    if (keyboard.getTouchDetected(i) == true) {
      touched = true;
    }
  }

    if (touched == true) {
      // turn the LED on (HIGH is the voltage level)
      digitalWrite(LED_PIN, HIGH);
      sound.play();
    } else {
      // turn the LED off by making the voltage LOW
      digitalWrite(LED_PIN, LOW);
      sound.stop();
    }


  // wait for a second
  delay(50);
}