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Author Topic: Wave Shield Code Question  (Read 423 times)
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Code:
#include <FatReader.h>
#include <SdReader.h>
#include <avr/pgmspace.h>
#include "WaveUtil.h"
#include "WaveHC.h"


SdReader card;    // This object holds the information for the card
FatVolume vol;    // This holds the information for the partition on the card
FatReader root;   // This holds the information for the filesystem on the card
FatReader f;      // This holds the information for the file we're play

WaveHC wave;      // This is the only wave (audio) object, since we will only play one at a time

//#define DEBOUNCE 5  // button debouncer
//
//// here is where we define the buttons that we'll use. button "1" is the first, button "6" is the 6th, etc
//byte buttons[] = {14, 15, 16, 17, 18, 19};
//// This handy macro lets us determine how big the array up above is, by checking the size
//#define NUMBUTTONS sizeof(buttons)
//// we will track if a button is just pressed, just released, or 'pressed' (the current state
//volatile byte pressed[NUMBUTTONS], justpressed[NUMBUTTONS], justreleased[NUMBUTTONS];

// this handy function will return the number of bytes currently free in RAM, great for debugging!   
int freeRam(void)
{
  extern int  __bss_end;
  extern int  *__brkval;
  int free_memory;
  if((int)__brkval == 0) {
    free_memory = ((int)&free_memory) - ((int)&__bss_end);
  }
  else {
    free_memory = ((int)&free_memory) - ((int)__brkval);
  }
  return free_memory;
}

void sdErrorCheck(void)
{
  if (!card.errorCode()) return;
  putstring("\n\rSD I/O error: ");
  Serial.print(card.errorCode(), HEX);
  putstring(", ");
  Serial.println(card.errorData(), HEX);
  while(1);
}

void setup() {
  byte i;
 
  // set up serial port
  Serial.begin(9600);
  putstring_nl("WaveHC with ");
//  Serial.print(NUMBUTTONS, DEC);
//  putstring_nl("buttons");
 
  putstring("Free RAM: ");       // This can help with debugging, running out of RAM is bad
  Serial.println(freeRam());      // if this is under 150 bytes it may spell trouble!
 
  // Set the output pins for the DAC control. This pins are defined in the library
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
 
  // pin13 LED
  pinMode(13, OUTPUT);
 
//  // Make input & enable pull-up resistors on switch pins
//  for (i=0; i< NUMBUTTONS; i++) {
//    pinMode(buttons[i], INPUT);
//    digitalWrite(buttons[i], HIGH);
//  }
 
  //  if (!card.init(true)) { //play with 4 MHz spi if 8MHz isn't working for you
  if (!card.init()) {         //play with 8 MHz spi (default faster!) 
    putstring_nl("Card init. failed!");  // Something went wrong, lets print out why
    sdErrorCheck();
    while(1);                            // then 'halt' - do nothing!
  }
 
  // enable optimize read - some cards may timeout. Disable if you're having problems
  card.partialBlockRead(true);
 
// Now we will look for a FAT partition!
  uint8_t part;
  for (part = 0; part < 5; part++) {     // we have up to 5 slots to look in
    if (vol.init(card, part))
      break;                             // we found one, lets bail
  }
  if (part == 5) {                       // if we ended up not finding one  :(
    putstring_nl("No valid FAT partition!");
    sdErrorCheck();      // Something went wrong, lets print out why
    while(1);                            // then 'halt' - do nothing!
  }
 
  // Lets tell the user about what we found
  putstring("Using partition ");
  Serial.print(part, DEC);
  putstring(", type is FAT");
  Serial.println(vol.fatType(),DEC);     // FAT16 or FAT32?
 
  // Try to open the root directory
  if (!root.openRoot(vol)) {
    putstring_nl("Can't open root dir!"); // Something went wrong,
    while(1);                             // then 'halt' - do nothing!
  }
 
  // Whew! We got past the tough parts.
  putstring_nl("Ready!");
 
  TCCR2A = 0;
  TCCR2B = 1<<CS22 | 1<<CS21 | 1<<CS20;

  //Timer2 Overflow Interrupt Enable
  TIMSK2 |= 1<<TOIE2;


}

//SIGNAL(TIMER2_OVF_vect) {
//  check_switches();
//}
//
//void check_switches()
//{
//  static byte previousstate[NUMBUTTONS];
//  static byte currentstate[NUMBUTTONS];
//  byte index;
//
//  for (index = 0; index < NUMBUTTONS; index++) {
//    currentstate[index] = digitalRead(buttons[index]);   // read the button
//   
    /*     
    Serial.print(index, DEC);
    Serial.print(": cstate=");
    Serial.print(currentstate[index], DEC);
    Serial.print(", pstate=");
    Serial.print(previousstate[index], DEC);
    Serial.print(", press=");
    */
//   
//    if (currentstate[index] == previousstate[index]) {
//      if ((pressed[index] == LOW) && (currentstate[index] == LOW)) {
//          // just pressed
//          justpressed[index] = 1;
//      }
//      else if ((pressed[index] == HIGH) && (currentstate[index] == HIGH)) {
//          // just released
//          justreleased[index] = 1;
//      }
//      pressed[index] = !currentstate[index];  // remember, digital HIGH means NOT pressed
//    }
//    //Serial.println(pressed[index], DEC);
//    previousstate[index] = currentstate[index];   // keep a running tally of the buttons
//  }
//}

void loop(){
playcomplete("SONGONE.wav");

//  if (counter == 1){
// 
//  playcomplete("SONGONE.wav");
//  }
//  else if (counter == 2){
// 
//  playcomplete("SONGTWO.wav");
//  }
//  else if (counter == 3){
// 
//  playcomplete("SONGTHREE.wav");
 
  }
 
//  if (justpressed[0]) {
//      justpressed[0] = 0;
//      playcomplete("DO.WAV");
//  }
//  if (justpressed[1]) {
//      justpressed[1] = 0;
//      playcomplete("RE.WAV");
//  }
//  if (justpressed[2]) {
//      justpressed[2] = 0;
//      playcomplete("MI.WAV");
//  }
//  if (justpressed[3]) {
//      justpressed[3] = 0;
//      playcomplete("FA.WAV");
//  }
//  if (justpressed[4]) {
//      justpressed[4] = 0;
//      playcomplete("SO.WAV");
//  }
//  if (justpressed[5]) {
//      justpressed[5] = 0;
//      playcomplete("LA.WAV");
//  }




// Plays a full file from beginning to end with no pause.
void playcomplete(char *name) {
  // call our helper to find and play this name
  playfile(name);
  while (wave.isplaying) {
  // do nothing while its playing
  }
  // now its done playing
}

void playfile(char *name) {
  // see if the wave object is currently doing something
  if (wave.isplaying) {// already playing something, so stop it!
    wave.stop(); // stop it
  }
  // look in the root directory and open the file
  if (!f.open(root, name)) {
    putstring("Couldn't open file "); Serial.print(name); return;
  }
  // OK read the file and turn it into a wave object
  if (!wave.create(f)) {
    putstring_nl("Not a valid WAV"); return;
  }
 
  // ok time to play! start playback
  wave.play();
}



I've made it work before, but not today. It compiles just fine but on the serial monitor it just shows just a bunch of this:WaveHC with
Free RAM: 676
WaveHC with
Free with
Free RAM: 676
WaveHC with
Free RAM: 676
WaveHC with
Free RAM: 676
WaveHC with
Free RAM: 676
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Seattle, WA USA
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 Bigger Bigger  Smaller Smaller  Reset Reset

Is all that commented out code part of the problem, or not? If not, GET RID OF IT!.

Clearly, something you are doing is causing the Arduino to reset. Add more Serial.print() statements, to see where it is getting to/not getting to. The code between where it gets to and where it does not get to is the problem.
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