Hi,

I am running a little audio application where a button press triggers an audio file to play. This works fine - with the bounce library, bounce2 though triggers two plays of the audio file - any ideas why?

My second problem is that to save on a microcontroller I added a DRV8825 stepper driver to rotate a platform at 10 RPM - which works fine on it's own, but as soon as I try and merge the two sketches the motor just stalls. I'm assuming this is because the Audio library is changing the timers etc? I did only use pins that are not being used by the Audio Shield.

Is there any chance of getting this to work or should I focus elsewhere?

Thanks,
Chris

Code:
// Simple WAV file player example
//
// Three types of output may be used, by configuring the code below.
//
//   1: Digital I2S - Normally used with the audio shield:
//         http://www.pjrc.com/store/teensy3_audio.html
//
//   2: Digital S/PDIF - Connect pin 22 to a S/PDIF transmitter
//         https://www.oshpark.com/shared_projects/KcDBKHta
//
//   3: Analog DAC - Connect the DAC pin to an amplified speaker
//         http://www.pjrc.com/teensy/gui/?info=AudioOutputAnalog
//
// To configure the output type, first uncomment one of the three
// output objects.  If not using the audio shield, comment out
// the sgtl5000_1 lines in setup(), so it does not wait forever
// trying to configure the SGTL5000 codec chip.
//
// The SD card may connect to different pins, depending on the
// hardware you are using.  Uncomment or configure the SD card
// pins to match your hardware.
//
// Data files to put on your SD card can be downloaded here:
//   http://www.pjrc.com/teensy/td_libs_AudioDataFiles.html
//
// This example code is in the public domain.

/*
 * Microstepping demo
 *
 * This requires that microstep control pins be connected in addition to STEP,DIR
 *
 * Copyright (C)2015 Laurentiu Badea
 *
 * This file may be redistributed under the terms of the MIT license.
 * A copy of this license has been included with this distribution in the file LICENSE.
 */

#include <Audio.h>
#include <Wire.h>
#include <SPI.h>
#include <SD.h>
#include <SerialFlash.h>

#include <Bounce.h>
#define BUTTON 8
#define BUTTON1 16
Bounce bouncer = Bounce( BUTTON,5 );
Bounce bouncer1 = Bounce( BUTTON1,5 );
int pressed = 1;
int pressed1 = 1;

AudioPlaySdWav           playWav1;
AudioOutputI2S           audioOutput;
AudioConnection          patchCord1(playWav1, 0, audioOutput, 0);
AudioConnection          patchCord2(playWav1, 1, audioOutput, 1);
AudioControlSGTL5000     sgtl5000_1;

// Use these with the Teensy Audio Shield
#define SDCARD_CS_PIN    10
#define SDCARD_MOSI_PIN  7
#define SDCARD_SCK_PIN   14

//--MOTOR BEGIN--//

#include <Arduino.h>

// Motor steps per revolution. Most steppers are 200 steps or 1.8 degrees/step
#define MOTOR_STEPS 200
#define RPM 10

#define DIR 21
#define STEP 20
#define ENABLE 5 // optional (just delete ENABLE from everywhere if not used)

/*
 * Choose one of the sections below that match your board
 */

 #include "DRV8825.h"
 #define MODE0 4
 #define MODE1 3
 #define MODE2 2
 DRV8825 stepper(MOTOR_STEPS, DIR, STEP, ENABLE, MODE0, MODE1, MODE2);

 //--MOTOR END--//

void setup() {
  //Serial.begin(9600);

  pinMode(BUTTON, INPUT_PULLUP);
  pinMode(BUTTON1, INPUT_PULLUP);
  
  AudioMemory(8);

  sgtl5000_1.enable();
  sgtl5000_1.volume(0.5);

  SPI.setMOSI(SDCARD_MOSI_PIN);
  SPI.setSCK(SDCARD_SCK_PIN);
  
  if (!(SD.begin(SDCARD_CS_PIN)))
  {
    while (1)
    {
      // Serial.println("Unable to access the SD card");
//      delay(500);
    }
  }

    stepper.begin(RPM);
    stepper.enable();

}



void loop() {
  stepper.setMicrostep(8);
  stepper.move(8 * MOTOR_STEPS);
  
  bouncer.update ( );
  pressed = bouncer.read();
  bouncer1.update ( );
  pressed1 = bouncer1.read();
  if (!pressed)
  {
    playFile("WAV1.WAV");
  }
  if (!pressed1)
  {
    playFile("WAV2.WAV");
  }
}

void playFile(const char *filename)
{
  // Serial.print("Playing file: ");
  // Serial.println(filename);

  // Start playing the file.  This sketch continues to
  // run while the file plays.
  playWav1.play(filename);
  pressed=1;

  // A brief delay for the library read WAV info
//  delay(5);

  // Simply wait for the file to finish playing.
  while (playWav1.isPlaying())
  {
    // Serial.println(pressed);
    // Serial.println("---");
  }
}