Simultaneous recording and playback

[Toptekkie]

I am trying to simultaneously record and play to alternate files when input 2 is intermittently switched low.
One file records and plays back but not the second.
Any suggestions welcome.

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

// GUItool: begin automatically generated code
AudioInputI2S            i2s2;           //xy=246.66665649414062,247
AudioPlaySdRaw           playRaw1;       //xy=428.6666564941406,588
AudioAnalyzePeak         peak1;          //xy=429.6666564941406,528
AudioMixer4              mixer1;         //xy=682.6666564941406,448
AudioMixer4              mixer3;         //xy=690.6666564941406,658.6666641235352
AudioMixer4              mixer2;         //xy=692.6666564941406,542
AudioRecordQueue         queue1;         //xy=963.6666259765625,657.0000228881836
AudioOutputI2S           i2s1;           //xy=980.6666564941406,478
AudioConnection          patchCord1(i2s2, 0, mixer3, 0);
AudioConnection          patchCord2(i2s2, 1, peak1, 0);
AudioConnection          patchCord3(playRaw1, 0, mixer1, 1);
AudioConnection          patchCord4(playRaw1, 0, mixer2, 1);
AudioConnection          patchCord5(playRaw1, 0, mixer3, 1);
AudioConnection          patchCord6(mixer1, 0, i2s1, 0);
AudioConnection          patchCord7(mixer3, queue1);
AudioConnection          patchCord8(mixer2, 0, i2s1, 1);
AudioControlSGTL5000     sgtl5000_1;     //xy=337.6666564941406,133
// GUItool: end automatically generated code

// Use these with the audio adaptor board
#define SDCARD_CS_PIN    10
#define SDCARD_MOSI_PIN  7
#define SDCARD_SCK_PIN   14
const int myInput = AUDIO_INPUT_MIC;

Bounce buttonStop = Bounce(0, 8);
Bounce buttonPlay = Bounce(1, 8);
Bounce buttonRecord = Bounce(2, 8);
File frec;
int mode = 0;
int playing = 0;
int firstRec = 1;
const char* file1 = "a1.RAW";
const char* file2 = "a2.RAW";

const char* getRecFileName(){
  if (mode == 0){
    return file1;
  }else{
    return file2;
  }
}
const char* getPlayFileName(){
  if (mode == 1){
    return file1;
  }else{
    return file2;
  }
}

void startRecording(){
  Serial.print("Recording to: ");
  Serial.println(getRecFileName());
  while (SD.exists(getRecFileName())) {
    // The SD library writes new data to the end of the
    // file, so to start a new recording, the old file
    // must be deleted before new data is written.
    SD.remove(getRecFileName());
  }
  frec = SD.open(getRecFileName(), FILE_WRITE);
  frec.seek(0);
  queue1.begin();
}

void continueRecording() {
  if (queue1.available() >= 2) { 
    byte buffer[512];
    memcpy(buffer, queue1.readBuffer(), 256);
    queue1.freeBuffer();
    memcpy(buffer+256, queue1.readBuffer(), 256);
    queue1.freeBuffer();
    elapsedMicros usec = 0;
    frec.write(buffer, 512);
  }
}

void stopRecording() {
  queue1.end();
  while (queue1.available() > 0) {
    frec.write((byte*)queue1.readBuffer(), 256);
    queue1.freeBuffer();
  }
  frec.close();
}

void playFile(){
  Serial.print("Playing from: ");
  Serial.println(getPlayFileName());
  playRaw1.play(getPlayFileName());
}


void setup() {
  pinMode(0, INPUT_PULLUP);
  pinMode(1, INPUT_PULLUP);
  pinMode(2, INPUT_PULLUP);
  Serial.begin(9600);

  // Audio connections require memory to work.  For more
  // detailed information, see the MemoryAndCpuUsage example
  AudioMemory(60);

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

  SPI.setMOSI(SDCARD_MOSI_PIN);
  SPI.setSCK(SDCARD_SCK_PIN);
  if (!(SD.begin(SDCARD_CS_PIN))) {
    // stop here, but print a message repetitively
    while (1) {
      Serial.println("Unable to access the SD card");
      delay(500);
    }
  }
}

void loop() {
  buttonRecord.update();
  if(buttonRecord.fallingEdge()){
      if(mode){
        mode = 0;
      }else{
        mode = 1;
      }
      if(!firstRec){
        stopRecording();
      }else{
        firstRec = 0;
      }
      playRaw1.stop();
      playFile();
      delay(5);
      startRecording();
  }
  if(!playRaw1.isPlaying()){
    playFile();
  }
  continueRecording();
}