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1  Using Arduino / Programming Questions / Re: Can one arduino grab a variable (a counter value) from another arduino? on: May 03, 2012, 03:21:22 pm
Well how do I use the rx tx thing? I can't figure it out.
2  Using Arduino / Programming Questions / Can one arduino grab a variable (a counter value) from another arduino? on: May 03, 2012, 03:07:17 pm
I have one arduino controlling a bunch of LEDs and a button, and another arduino that is controlling a wave shield. I need the wave shield arduino to access the button counter from the first one and switch between "modes" with the lights. How do I do this? I was going to use the rx and tx thing.. I'm not sure.
3  Using Arduino / Programming Questions / Wave Shield Code Question on: May 02, 2012, 02:39:36 pm
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
4  Using Arduino / Programming Questions / Re: Error with simple button code on: May 02, 2012, 02:17:42 pm
How else can i tell the counter to add 1 if the button is pushed? I changed it so now it says counter++, that's the example from this website.

Also button lights should have been commented out, that may have been the problem. Haha.
5  Using Arduino / Programming Questions / Re: Error with simple button code on: May 02, 2012, 02:09:35 pm
I mean, it's an if statement so it's only going to pick one of those groups to turn on...actually yeah you're right. Yeah. Well i fixed the first error but now I have another about error: expected constructor, destructor, or type conversion before 'const'. Whatever that means. It highlights the first line.
6  Using Arduino / Programming Questions / Error with simple button code on: May 02, 2012, 01:47:58 pm
Trying to make a button that will rotate between three programs for lights. Here's the code:

Code:
Buttonlights

// constants won't change. They're used here to
// set pin numbers:
const int buttonPin = 3;     // the number of the pushbutton pin
const int ledPinr1 =  13;      // the number of the LED pin
const int ledPinr2 = 12;
const int ledPinr3 = 11;
const int ledPing1 = 10;
const int ledPing2 = 9;
const int ledPing3 = 8;
const int ledPinb1 = 7;
const int ledPinb2 = 6;
const int ledPinb3 = 5;


// variables will change:
int buttonState = 0;         // variable for reading the pushbutton status
int counter = 0
void setup() {
  // initialize the LED pin as an output:
  pinMode(ledPinr1, OUTPUT); 
  pinMode(ledPinr2, OUTPUT); 
  pinMode(ledPinr3, OUTPUT);
  pinMode(ledPing1, OUTPUT); 
  pinMode(ledPing2, OUTPUT); 
  pinMode(ledPing3, OUTPUT);
  pinMode(ledPinb1, OUTPUT); 
  pinMode(ledPinb2, OUTPUT); 
  pinMode(ledPinb3, OUTPUT); 
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);     
}

void loop(){
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);

  // check if the pushbutton is pressed.
  // if it is, the buttonState is HIGH:
  if (buttonState == HIGH) {     
    counter+1;
    // turn LED on:   
   if(counter == 1){
    digitalWrite(ledPinb1, HIGH);
    digitalWrite(ledPinb2, HIGH);
    digitalWrite(ledPinb3, HIGH); 
  }
  else if(counter == 2){
    // turn LED off:
   digitalWrite(ledPing1, HIGH);
    digitalWrite(ledPing2, HIGH);
    digitalWrite(ledPing3, HIGH);
  }
   
  else if(counter == 3){
    digitalWrite(ledPinr1, HIGH);
    digitalWrite(ledPinr2, HIGH);
    digitalWrite(ledPinr3, HIGH); 
  }
  else if(counter == 4)
  counter = 0;
  }
}

Error: Expected unqualified id before numeric constant.
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