// TTSNewVoice.pde
// example of changing voices on Speakjet Shield TTS with the text-to-speech enabled
// 10-24-2010
// DroidBuilder.com / Galen Raben

// set up a SoftwareSerial port for Speakjet Shield
#include <SoftwareSerial.h>
// rxPin: the pin on which to receive serial data from TTS256
// txPin: the pin on which to transmit serial data to the TTS256
// busyPin: the pin monitoring SpeakJet busy status
#define txPin 2
#define rxPin 3
#define busyPin 4
// set up a new serial port for Speakjet Shield
SoftwareSerial speakJet =  SoftwareSerial(rxPin, txPin);

void setup(){
  // init serial communications with the SpeakJet-TTS256
  pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);
  pinMode(busyPin, INPUT);
  speakJet.begin(9600); // set the data rate for the SoftwareSerial port
  delay(500); // wait a moment for the Arduino resets to finish (speaks "ready")
}

void loop() {
  changeVoice2(); // only works once in a loop, other changes are ignored by TTS256.
  speakJet.println("Hello world"); // send it to the SpeakJet
  SJBusy();
}

void changeVoice1() { // default voice
  speakJet.println("passthruon"); // init TTS256 passthru
  speakJet.print(13, BYTE); // send cr
  speakJet.print(20, BYTE); // vol
  speakJet.print(96, BYTE); //  0-127 default 96
  speakJet.print(21, BYTE); // speed
  speakJet.print(114, BYTE); //  0-127 default 114
  speakJet.print(22, BYTE); // pitch
  speakJet.print(88, BYTE); //  0-255 default 88
  speakJet.print(23, BYTE); // bend
  speakJet.print(5, BYTE); //  0-15 default 5
  speakJet.println("X"); // terminate passthruon
  speakJet.println(10, BYTE); // add linefeed (\x0A)
  delay(500);
}

void changeVoice2() { // higher pitch voice
  speakJet.println("passthruon");
  speakJet.print(13, BYTE);
  speakJet.print(20, BYTE);
  speakJet.print(96, BYTE);
  speakJet.print(21, BYTE);
  speakJet.print(114, BYTE);
  speakJet.print(22, BYTE); // pitch
  speakJet.print(120, BYTE); // <-- set pitch higher
  speakJet.print(23, BYTE);
  speakJet.print(5, BYTE);
  speakJet.println("X");
  speakJet.println(10, BYTE);
  delay(500);
}

void changeVoice3() { // lower pitch voice
  speakJet.println("passthruon");
  speakJet.print(13, BYTE);
  speakJet.print(20, BYTE);
  speakJet.print(96, BYTE);
  speakJet.print(21, BYTE);
  speakJet.print(114, BYTE);
  speakJet.print(22, BYTE); // pitch
  speakJet.print(60, BYTE); // <-- set pitch lower
  speakJet.print(23, BYTE);
  speakJet.print(5, BYTE);
  speakJet.println("X");
  speakJet.println(10, BYTE);
  delay(500);
}

void changeVoice4() { // StarWars droid voice
  speakJet.println("passthruon");
  speakJet.print(13, BYTE);
  speakJet.print(20, BYTE);
  speakJet.print(96, BYTE);
  speakJet.print(21, BYTE); // speed
  speakJet.print(120, BYTE); // <-- set speed higer
  speakJet.print(22, BYTE); // pitch
  speakJet.print(120, BYTE); // <-- set pitch higher
  speakJet.print(23, BYTE); // bend
  speakJet.print(12, BYTE); // <-- set bend higher
  speakJet.println("X");
  speakJet.println(10, BYTE);
  delay(500);
}

void SJBusy(){
  delay(20); // wait 12ms minimum before checking SpeakJet busy pin
  while(digitalRead(busyPin)){
    delay(250); // wait here while SpeakJet is busy (pin 4 is true)
  }
  delay(250); // a bit more delay may be needed
}