UIOML_ArduinoUNO.ino

#include <usbh_midi.h>
#include <usbhub.h>
#ifdef dobogusinclude
#include <spi4teensy3.h>
#include <SPI.h>
#endif

USB  Usb;
USBH_MIDI  Midi(&Usb);

#define BUFSIZE 99
volatile byte midiFlag = 0;
int timer1_counter;

//MIDI VARIABLES
byte recButtonID = 2;

byte recButton = 0;
byte recButtonState = 0;
unsigned long recStartTime = 0;
int recPointer = 0;

byte red = 5;
byte green = 6;
byte blue = 20;

byte rec[BUFSIZE + 1];
unsigned long recTime[BUFSIZE + 1];

long recButtonTimer = 0;
byte thresh = 0;
//byte thresh = 200;

byte recFlag = 0;

void setup() {
  Serial.begin(115200);
  setIntervalTimer();

  //Workaround for non UHS2.0 Shield
  pinMode(7, OUTPUT);
  digitalWrite(7, HIGH);

  if (Usb.Init() == -1) {
    while (1); //halt
  }//if (Usb.Init() == -1...
  delay( 200 );

  pinMode(recButtonID, INPUT_PULLUP);
  pinMode(red, OUTPUT);
  pinMode(green, OUTPUT);
  pinMode(blue, OUTPUT);
  digitalWrite(red, LOW);
  digitalWrite(green, LOW);
  digitalWrite(blue, HIGH);
}

void loop() {

  uint8_t msg[4];
  uint8_t outBuf[3];
  uint8_t msgSize;

  Usb.Task();

  /* Process midi data according to timer event for
   * more accurate timing on playback.
   */
  if (midiFlag == 1) {

    if (recButtonState == 1) {

      /* If max record length is reached, automatically
       * start playing.
       */
      if (recPointer >= (BUFSIZE - 1)) {
        recButtonState = 2;
        recFlag = 1;
        digitalWrite(red, LOW);
        digitalWrite(green, HIGH);
        digitalWrite(blue, LOW);
      }
      else {
        if ( Usb.getUsbTaskState() == USB_STATE_RUNNING ) {
          int x = micros() - recStartTime;
          msgSize = Midi.RecvData(outBuf);
          if ( (msgSize) > 0 ) {
            if (outBuf[0] < 240) {
              Serial.print(recButtonState);
              Serial.print(" ");
              Serial.print(outBuf[0]);
              Serial.print(" ");
              Serial.print(outBuf[1]);
              Serial.print(" ");
              Serial.println(outBuf[2]);
              recTime[recPointer] = x;
              rec[recPointer] = outBuf[0];
              recPointer++;
              recTime[recPointer] = x;
              rec[recPointer] = outBuf[1];
              recPointer++;
              recTime[recPointer] = x;
              rec[recPointer] = outBuf[2];
              recPointer++;
            }
          }
        }
      }
    }
    if (recButtonState == 2) {
      if (recFlag == 1) {
        rec[recPointer] = 255;
        recTime[recPointer] = micros() - recStartTime;
        recStartTime = micros();
        recPointer = 0;
        recFlag = 0;
        digitalWrite(red, LOW);
        digitalWrite(green, HIGH);
        digitalWrite(blue, LOW);
      }
      byte f = 0;
      //      while ((micros() - recStartTime > recTime[recPointer]) && (f == 0)){
      while (f == 0) {
        if (rec[recPointer] == 255) {
          recStartTime = micros();
          recPointer = 0;
          f = 1;
        }
        else {
          msg[0] = rec[recPointer];
          recPointer++;
          msg[1] = rec[recPointer];
          recPointer++;
          msg[2] = rec[recPointer];
          recPointer++;
          Midi.SendData(msg, 0);
          Serial.print(recButtonState);
          Serial.print(" ");
          Serial.print(msg[0]);
          Serial.print(" ");
          Serial.print(msg[1]);
          Serial.print(" ");
          Serial.println(msg[2]);
        }
      }
    }
    noInterrupts();
    midiFlag = 0;
    interrupts();
  }

  /* Process Button Push
   *
   */
  int b1 = !digitalRead(recButtonID);
  delay(50);
  if (micros() - recButtonTimer > 50000) {
    if (b1 > thresh) {
      recButtonTimer = micros();
      recButtonState++;
      if (recButtonState > 2) {
        recButtonState = 0;
      }
      if (recButtonState == 2) {
        recFlag = 1;
        digitalWrite(red, LOW);
        digitalWrite(green, HIGH);
        digitalWrite(blue, LOW);
      }
      else if (recButtonState == 0) {
        digitalWrite(red, LOW);
        digitalWrite(green, LOW);
        digitalWrite(blue, HIGH);
      }
      else {
        digitalWrite(red, HIGH);
        digitalWrite(green, LOW);
        digitalWrite(blue, LOW);
        recStartTime = micros();
        recPointer = 0;
      }
      Serial.print("recButtonState:");
      Serial.println(recButtonState);
    }
  }
}

void  setIntervalTimer()
{
  // initialize timer1
  noInterrupts();           // disable all interrupts
  TCCR1A = 0;
  TCCR1B = 0;

  // Set timer1_counter to the correct value for our interrupt interval
  //timer1_counter = 3036;    // preload timer 65536-16MHz/256/1Hz
  timer1_counter = 65473;    // preload timer 65536-16MHz/256/1000Hz

  TCNT1 = timer1_counter;   // preload timer
  TCCR1B |= (1 << CS12);    // 256 prescaler
  TIMSK1 |= (1 << TOIE1);   // enable timer overflow interrupt
  interrupts();             // enable all interrupts
}
ISR(TIMER1_OVF_vect)        // interrupt service routine
{
  TCNT1 = timer1_counter;   // preload timer
  midiFlag = 1;
}