Hi
I am using a bare conductive touch board to trigger mp3s using the capacitive touch pads.
I would like to add a button so that i can cycle between different sound banks
Currently the touch pad plays track001.mp3 if E1 is pressed etc.
I am trying to find out where i can change that name so that i can switch which track name is played on button press.
here is the code for the touchmp3
Any help would be greatly appreciated.
thanks
Tara
/*******************************************************************************
Bare Conductive Touch MP3 player
------------------------------
Touch_MP3.ino - touch triggered MP3 playback
You need twelve MP3 files named TRACK000.mp3 to TRACK011.mp3 in the root of the
microSD card.
When you touch electrode E0, TRACK000.mp3 will play. When you touch electrode
E1, TRACK001.mp3 will play, and so on.
SD card
│
TRACK000.mp3
TRACK001.mp3
TRACK002.mp3
TRACK003.mp3
TRACK004.mp3
TRACK005.mp3
TRACK006.mp3
TRACK007.mp3
TRACK008.mp3
TRACK009.mp3
TRACK010.mp3
TRACK011.mp3
Based on code by Jim Lindblom and plenty of inspiration from the Freescale
Semiconductor datasheets and application notes.
Bare Conductive code written by Stefan Dzisiewski-Smith and Peter Krige.
This work is licensed under a MIT license https://opensource.org/licenses/MIT
Copyright (c) 2016, Bare Conductive
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*******************************************************************************/
// compiler error handling
#include "Compiler_Errors.h"
// touch includes
#include <MPR121.h>
#include <Wire.h>
#define MPR121_ADDR 0x5C
#define MPR121_INT 4
// mp3 includes
#include <SPI.h>
#include <SdFat.h>
#include <FreeStack.h>
#include <SFEMP3Shield.h>
// mp3 variables
SFEMP3Shield MP3player;
byte result;
int lastPlayed = 0;
// mp3 behaviour defines
#define REPLAY_MODE TRUE // By default, touching an electrode repeatedly will
// play the track again from the start each time.
//
// If you set this to FALSE, repeatedly touching an
// electrode will stop the track if it is already
// playing, or play it from the start if it is not.
// touch behaviour definitions
#define firstPin 0
#define lastPin 11
// sd card instantiation
SdFat sd;
void setup(){
Serial.begin(57600);
pinMode(LED_BUILTIN, OUTPUT);
//while (!Serial) ; {} //uncomment when using the serial monitor
Serial.println("Bare Conductive Touch MP3 player");
if(!sd.begin(SD_SEL, SPI_HALF_SPEED)) sd.initErrorHalt();
if(!MPR121.begin(MPR121_ADDR)) Serial.println("error setting up MPR121");
MPR121.setInterruptPin(MPR121_INT);
MPR121.setTouchThreshold(40);
MPR121.setReleaseThreshold(20);
result = MP3player.begin();
MP3player.setVolume(10,10);
if(result != 0) {
Serial.print("Error code: ");
Serial.print(result);
Serial.println(" when trying to start MP3 player");
}
}
void loop(){
readTouchInputs();
}
void readTouchInputs(){
if(MPR121.touchStatusChanged()){
MPR121.updateTouchData();
// only make an action if we have one or fewer pins touched
// ignore multiple touches
if(MPR121.getNumTouches()<=1){
for (int i=0; i < 12; i++){ // Check which electrodes were pressed
if(MPR121.isNewTouch(i)){
//pin i was just touched
Serial.print("pin ");
Serial.print(i);
Serial.println(" was just touched");
digitalWrite(LED_BUILTIN, HIGH);
if(i<=lastPin && i>=firstPin){
if(MP3player.isPlaying()){
if(lastPlayed==i && !REPLAY_MODE){
// if we're already playing the requested track, stop it
// (but only if we're not in REPLAY_MODE)
MP3player.stopTrack();
Serial.print("stopping track ");
Serial.println(i-firstPin);
} else {
// if we're already playing a different track (or we're in
// REPLAY_MODE), stop and play the newly requested one
MP3player.stopTrack();
MP3player.playTrack(i-firstPin);
Serial.print("playing track ");
Serial.println(i-firstPin);
// don't forget to update lastPlayed - without it we don't
// have a history
lastPlayed = i;
}
} else {
// if we're playing nothing, play the requested track
// and update lastplayed
MP3player.playTrack(i-firstPin);
Serial.print("playing track ");
Serial.println(i-firstPin);
lastPlayed = i;
}
}
}else{
if(MPR121.isNewRelease(i)){
Serial.print("pin ");
Serial.print(i);
Serial.println(" is no longer being touched");
digitalWrite(LED_BUILTIN, LOW);
}
}
}
}
}
}