Hello,
I'm trying to use Adafruit WaveShield with a PIR sensor (what to generate an alarm when a motion is detected).
The code below is unfortunatly not working. :~
Without the PIR sensor (and code updated), the .wav file keep playing well. The PIR sensor is also working well with a buzzer.
Can a helpfull mind check the code below and see what's wrong ?
I'm using an Arduino Uno.
#include <FatReader.h>
#include <SdReader.h>
#include <avr/pgmspace.h>
#include "WaveUtil.h"
#include "WaveHC.h"
//START:variables
int ledPin = 13; // on board LED
int inputPin = 12; // input pin for the PIR sensor
int pirStatus = LOW; // set to LOW (no motion detected)
int pirValue = 0; // variable for reading inputPin status
//END:variables
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
// 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() {
// set up serial port
pinMode(ledPin, OUTPUT); // set pinMode of the onboard LED to OUTPUT
pinMode(inputPin, INPUT); // set PIR inputPin and listen to it as INPUT
Serial.begin(9600);
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);
// 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!");
}
//////////////////////////////////// LOOP//START:main_loop
void loop() {
pirValue = digitalRead(inputPin); // poll the value of the PIR
if (pirValue == HIGH) { // If motion is detected
digitalWrite(ledPin, HIGH); // turn the onboard LED on
if (pirStatus == LOW) { // Trigger motion
Serial.println("Motion detected");
playcomplete("1.wav");
}
delay(1000); // wait a second
pirStatus = HIGH; // set the pirStatus flag to HIGH to stop
// repeating motion
}
else {
digitalWrite(ledPin, LOW); // turn the onboard LED off
if (pirStatus == HIGH){
Serial.println("No motion");
pirStatus = LOW; // set the pirStatus flag to LOW to
// prepare it for a motion event
}
}
}
//END:main_loop
/////////////////////////////////// HELPERS
// 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();
}
Thanks for your help !!