Adafruit.Projects/Itsybitsy32u4_Trellis_AudioFXSoundboard.ino

#include <Wire.h>
#include "Adafruit_Trellis.h"
#include <SoftwareSerial.h>
#include "Adafruit_Soundboard.h"

// Sound FX Board setup
#define SFX_TX 9
#define SFX_RX 10
#define SFX_RST 4
#define SFX_ACT A1
 
SoftwareSerial ss = SoftwareSerial(SFX_TX, SFX_RX);
Adafruit_Soundboard sfx = Adafruit_Soundboard(&ss, NULL, SFX_RST);
 
// Trellis setup
#define INTPIN A2

Adafruit_Trellis matrix0 = Adafruit_Trellis();
Adafruit_TrellisSet trellis =  Adafruit_TrellisSet(&matrix0);
 
#define NUMTRELLIS 1
#define numKeys (NUMTRELLIS * 16)
 
// Sketch-specific global variables 
char page1TrackNames[12][12] = {
  "DOIT    OGG",
  "MAKEIT  OGG",
  "WORKIT  OGG",
  "",
  "HARDER  OGG",
  "BETTER  OGG",
  "FASTER  OGG",
  "STRONGEROGG",
};
char page2TrackNames[12][12] = {
  "CRICK   OGG",
  "FAIL    OGG",
  "BITEASS OGG",
  "MARIO   OGG",
  "PADUM   OGG",
  "PHONE   OGG",
  "WINNER  OGG",
  "WRONG   OGG"
};
char page3TrackNames[12][12] = {
  "WRONG   OGG"
}; 
char page4TrackNames[12][12] = {
  "WRONG   OGG"
}; 
int alternate[16] = {0,2,5,7,8,10,13,15,1,3,4,6,9,11,12,14};
int selectedPage = 12;

void setup() {
  Serial.begin(115200);
//  Serial.println("Trellis Demo");

  pinMode(INTPIN, INPUT);
  digitalWrite(INTPIN, HIGH);
  pinMode(SFX_ACT, INPUT);
  digitalWrite(SFX_ACT, HIGH); //pullup

  trellis.begin(0x70);

  // Test/showoff all leds
  for (uint8_t i=0; i<16; i++) {
    trellis.setLED(alternate[i]);
    trellis.writeDisplay();
    delay(50);
  }
  trellis.blinkRate(1);

  // softwareserial at 9600 baud
  ss.begin(9600);

  if (!sfx.reset()) {
    Serial.println("SFX not found");
    while (1);
  }
  Serial.println("SFX board found");
/*  do {
    currentVolume = sfx.volDown();
    Serial.print("Lowering volume to: "); Serial.println(currentVolume);
  } while (currentVolume > MINVOLUME);
*/  

  uint8_t files = sfx.listFiles();
  Serial.println("===== File Listing =====");
  Serial.print("Found "); Serial.print(files); Serial.println(" Files");
  for (uint8_t f=0; f<files; f++) {
    Serial.print(f); 
    Serial.print("\tname: "); Serial.print(sfx.fileName(f));
    Serial.print("\tsize: "); Serial.println(sfx.fileSize(f));
  }
  Serial.println("========================");  

  trellis.clear();
  trellis.blinkRate(0);
  trellis.setLED(selectedPage);
  trellis.writeDisplay();
}
 
int lastPlayed = -1;
char * trackName;

void loop() {
  delay(30); // 30ms delay is required, dont remove me!

  if (!digitalRead(SFX_ACT)) {
    trellis.setLED(lastPlayed);
    trellis.writeDisplay();
  } else {
    trellis.clear();
//    lastPlayed = -1;
    trellis.setLED(selectedPage);
    trellis.writeDisplay();
  }

  if (trellis.readSwitches()) {
    Serial.print("Switch change: ");
    for (uint8_t i=0; i<numKeys; i++) {
      if (trellis.justPressed(i)){
        Serial.print(i); Serial.println(" pressed...");
        switch ((selectedPage * 100) + i) {
          case 1200 ... 1211:
            trackName = page1TrackNames[i];
            playTrack(1, i, trackName);
            break;
          case 1300 ... 1311:
            trackName = page2TrackNames[i];
            playTrack(2, i, trackName);
            break;
          case 1400 ... 1411:
            trackName = page3TrackNames[i];
            playTrack(3, i, trackName);
            break;
          case 1500 ... 1511:
            trackName = page4TrackNames[i];
            playTrack(4, i, trackName);
            break;
          case 1212 ... 1215:
          case 1312 ... 1315:
          case 1412 ... 1415:
          case 1512 ... 1515:
            selectedPage = i;
            trellis.setLED(selectedPage);
            trellis.writeDisplay();
            break;
        }
      } else if (trellis.justReleased(i)) {
        Serial.print(i); Serial.println(" released...");
      }
    }
  }
}

void playTrack(int page, int key, char* trackName) {
  if (!digitalRead(SFX_ACT)) {
    Serial.println("Interrupting playback..."); // check ACT lite first?
    if (! sfx.stop() ) {
      Serial.println("Failed to stop playback!");
    }
  }

  int ret = sfx.playTrack(trackName);
  if (!ret) {
    Serial.println("Failed to play track...");
  } else {
    Serial.print("Playing sound "); Serial.print(trackName); Serial.print(" (page "); Serial.print(page); Serial.print(")...");
    lastPlayed = key;
    trellis.setLED(key);
    trellis.writeDisplay();
  }
}