BlizzyB Ocean Edition Firmware v0.5

/*
  BlizzyB Sine Ed. - Douglas Berdeaux 2014 (C) GNU
  Firmware version 0.2 (Still in BETA)
  This project requires a lot of knowledge about SD card reading and the TMRpcm library.
  Please see WeakNetLabs.com for more details.
   - WeakNetLabs@Gmail.com
*/
#include <SD.h> // preprocessor directives (header files)
#define SDPIN 10    // SD Card Pin for SeeedStudio SD Card Shield
#include <TMRpcm.h> // to play WAV files
#include <Keypad.h> // for the keypad
char sound[20] = "sounds/blusinxx.wav";
int b2600 = 15; // 2600Hz Supervisory Signalling button
File myFile; // create objects here from library classes
TMRpcm tmrpcm; // create sound playing object
char keys[4][4] = { // matrix layout used by the Keypad library
  {'1','2','3','a'},
  {'4','5','6','b'},
  {'7','8','9','c'},
  {'*','0','#','d'}
};
int store[24] = { // this is where we will store our digits
  -1,-1,-1,-1,-1,-1,-1,-1,
  -1,-1,-1,-1,-1,-1,-1,-1
};
byte rowPins[4] = {5,4,3,2}; //connect to the row pinouts of the keypad
byte colPins[4] = {14,8,7,6}; //connect to the column pinouts of the keypad
Keypad keypad = Keypad(makeKeymap(keys),rowPins,colPins,4,4);
boolean rec = false; // recording boolean
boolean stored = false; // stored digits? not at startup!

void setup(){
  Serial.begin(9600);
  pinMode(b2600, INPUT); // A1 2600 button
  keypad.addEventListener(procButton); // listener for buttons pressed/held/released
  keypad.setHoldTime(1500); // hold for two seconds to change state to HOLD
  if (!SD.begin(SDPIN)) {
    Serial.println("initialization failed!");
  }else{
    Serial.println("initialization success!");
  }
  tmrpcm.speakerPin = 9; //11 on Mega, 9 on Uno, Nano, etc
  tmrpcm.setVolume(3); // set volume here (test for distortion)
  file("bu",1000);
  return;
}

void loop(){
  if(digitalRead(b2600)==HIGH){ // play 2600Hz if button pressed
    file("26",1000); // supervisory signalling
  }
  char button = keypad.getKey(); // check for button press
  return;
}

void file(char a[2],int i){ // file name (save memory)
  sound[13] = a[0];
  sound[14] = a[1];
  tmrpcm.play(sound);
  delay (i);
  return;
}

void procButton(KeypadEvent b){
  int intB = b - 48;
  switch(keypad.getState()){ // if a button was pressed
    case RELEASED:
      return;
    case PRESSED: // pressed a button
      if(rec && (intB==-13||intB==-6||(intB>=0&&intB<=9))){ // store it, right off the bat
        storeDigit(intB);
      }
      if(intB>-1&&intB<10){ // 0-9
        char c[2];
        c[0] = '0';
        c[1] = b; // keypadevent object same as char
        file(c,100);
      }else if(intB==-6){ // KP
        file("kp",200);
      }else if(intB==-13){ // ST
        file("st",200);
      }else if(stored&&intB==52){
        playBack();
       return;
      }
      break;
    case HOLD:
      if(intB==51){ // HELD C
        if(rec){ // we are done recording:
          rec = false;
          if(store[0] != -1){ // if nothing was stored, set to true:
            stored = true; // we have digits stored
          }else{
            stored = false; // fuckem
          }
        }else{ // we start recording
          rec = true;
          resetStore();
        }
        recNotify();
        break;
      }else if(intB==49){
        file("h0",1000);
        break;
      }
  }
  return;
}

void resetStore(void){
  for(int i=0;i<=16;i++){
    store[i] = -1;
  }
  return;
}

void storeDigit(int digit){
  for(int i=0;i<=15;i++){
    if(store[i]==-1){
      store[i] = digit;
      return;
    }
  }
  return;
}

void playBack(void){
  for(int i=0;i<=15;i++){
    char c[2];
    if(store[i] != -1){ // we have a digit
      if(store[i] >=0){ // 0-9
        c[0] = '0';
        char b[2];
        String str;
        str=String(store[i]);
        str.toCharArray(b,2);
        c[1] = b[0];
      }else{ // kp && st
        if(store[i]==-6){
          c[0] = 'k';
          c[1] = 'p';
        }else if(store[i]==-13){
          c[0] = 's';
          c[1] = 't';
        }
      }
      file(c,100); // 66ms on + 34 silence
      delay(32);   // + 32 more silence
    }else{
      return; // hit a -1
    }
  }
  return;
}

void recNotify(void){
 if(rec){  // we are recording:
   file("r0",100);
 }else if(!rec&&stored){ // we have recorded data
   file("r1",100);
 }else{ // we are done rcording, but nothing stored
   file("r2",100);
 }
 return;
}