Can someone please help me, I can’t work out why the below code isnt working.
I have installed all the libraries, and labelled MP3s using 8.3 file naming system.
I am so grateful of any help.
Cheers,
Annie
Heres the code:
// libraries
#include <SPI.h>
#include <SdFat.h>
#include <SdFatUtil.h>
#include <SFEMP3Shield.h>
SdFat sd;
SFEMP3Shield MP3player;
int dial = 14;
int track1 = 0;
int track2 = 1;
int track3 = 2;
int track4 = 3;
int track5 = 4;
int track6 = 5;
int track7 = 6;
int track8 = 7;
int track7 = 8;
int track8 = 9;
int needToPrint = 0;
int count;
int lastState = LOW;
int trueState = LOW;
long lastStateChangeTime = 0;
// constants
int dialHasFinishedRotatingAfterMs = 100;
int debounceDelay = 10;
void setup() {
Serial.begin(115200);
pinMode(dial, INPUT);
if(!sd.begin(9, SPI_HALF_SPEED)) sd.initErrorHalt();
if (!sd.chdir(“/”)) sd.errorHalt(“sd.chdir”);
MP3player.begin();
MP3player.setVolume(10,10);
}
void loop()
{
int reading = digitalRead(dial);
int reading2 = count;
if ((millis() – lastStateChangeTime) > dialHasFinishedRotatingAfterMs) {
// the dial isn’t being dialed, or has just finished being dialed.
if (needToPrint) {
// if it’s only just finished being dialed, we need to send the number down the serial
// line and reset the count. We mod the count by 10 because ‘0’ will send 10 pulses.
Serial.println(count);
needToPrint = 0;
count = 0;
if (reading2 == track2) {
Serial.println (“happy”);
MP3player.playTrack(1);
}
}
}
if (reading != lastState) {
lastStateChangeTime = millis();
}
if ((millis() – lastStateChangeTime) > debounceDelay) {
// debounce – this happens once it’s stablized
if (reading != trueState) {
// this means that the switch has either just gone from closed->open or vice versa.
trueState = reading;
if (trueState == HIGH) {
// increment the count of pulses if it’s gone high.
count++;
needToPrint = 1; // we’ll need to print this number (once the dial has finished rotating)
}
}
}
lastState = reading;
}
