//speakjet_pitch.pde
// a demo showing the effect of changing pitch and bend values
// 5-4-2010 by Galen Raben / droidbuilder.com
// modify pitch variable

// set up a new serial port
//rxPin: the pin on which to receive serial data
//txPin: the pin on which to transmit serial data 
#include <SoftwareSerial.h>

#define txPin 2
#define rxPin 3
#define busyPin 4

// set up SoftwareSerial port
SoftwareSerial speakJet =  SoftwareSerial(rxPin, txPin);

void setup()
{
  // define pin modes for tx, rx pins:
  //pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);
  speakJet.begin(9600);


}

/* HELLO WORLD SpeakJet MSA phonemes (see page 16 of SpeakJet User Manual)
 20, 96, 21, 114, 22, 88, 23, 5, 183, 7, 159, 146, 164, 147, 151, 145, 176
 v       s        p       b       H   f   E    L    O    W    A    L    E
 o       p        i       e       E   a   H    O    W    W    X    E    D
 l       e        t       n           s   L         W         R
         e        c       d           t   L         W         R
         d        h
default pitch=88 */
byte prefix[] = {20, 96, 21, 114, 22, 88,  23, 5}; // this is the normal values for setup
byte message[] = {183, 7, 159, 146, 164, 147, 151, 145, 176}; //say "hello world"

void loop() {
  // reset to normal settings
  speakJet.print(20, BYTE); // vol
  speakJet.print(96, BYTE);
  speakJet.print(21, BYTE); // speed
  speakJet.print(114, BYTE);
  speakJet.print(22, BYTE); // pitch
  speakJet.print(88, BYTE);
  speakJet.print(23, BYTE); // bend
  speakJet.print(5, BYTE);
  for (int i=0; i<sizeof(message); i++){ // rest of speech data
    speakJet.print(message[i], BYTE);
  }
  SJBusy();
  
  // vary pitch
  for (byte pitch=1; pitch<16; pitch++){
    speakJet.print(20, BYTE); // vol
    speakJet.print(96, BYTE);
    speakJet.print(21, BYTE); // speed
    speakJet.print(114, BYTE);
    speakJet.print(22, BYTE); // pitch
    speakJet.print(pitch*16, BYTE);
    speakJet.print(23, BYTE); // bend
    speakJet.print(5, BYTE);
    for (int i=0; i<sizeof(message); i++){ // rest of speech data
      speakJet.print(message[i], BYTE);
    }
    SJBusy();
  }
  
  // vary bend
  for (byte bend=0; bend<15; bend++){
    speakJet.print(20, BYTE); // vol
    speakJet.print(96, BYTE);
    speakJet.print(21, BYTE); // speed
    speakJet.print(114, BYTE);
    speakJet.print(22, BYTE); // pitch
    speakJet.print(88, BYTE);
    speakJet.print(23, BYTE); // bend
    speakJet.print(bend, BYTE);
    for (int i=0; i<sizeof(message); i++){ // rest of speech data
      speakJet.print(message[i], BYTE);
    }
    SJBusy();
  }
  delay(3000); // wait 3 seconds before looping again
}

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
}