// ******************************************************************************************************
// * DW6000 controller for Arduino nano V3                                                              *
// * Author: PHOBoS                                                                                     *
// * Date: Jun 3rd, 2018                                                                                *
// ******************************************************************************************************
// *                                                                                                    *
// * example code that repeatedly sweeps the filer cutoff frequency up and down                         *
// *                                                                                                    *
// ******************************************************************************************************

#include <Wire.h>
#include <MIDI.h>                       // use midi library

MIDI_CREATE_DEFAULT_INSTANCE();         // use default midi configuration

// KORG DW6000 parameter change bytes
const byte exclusive    = 0xF0;
const byte korg_id      = 0x42;
const byte format_id    = 0x30;
const byte dw6000_id    = 0x04;
const byte param_change = 0x41;
const byte eox          = 0xF7;

byte param_offset       =  5;           // selected parameter (5 = filter cutoff frequency)
byte param_value        =  0;           // value for selected parameter
byte sysexArray[] = {exclusive, korg_id, format_id, dw6000_id, param_change, param_offset, param_value, eox};  

void setup(void) {
  pinMode(LED_BUILTIN, OUTPUT);         // initialize built in LED as an output
  MIDI.begin(MIDI_CHANNEL_OMNI);        // set midi channels to OMNI
}

void loop()
{
 for (param_value = 0; param_value < 63; param_value++) {
  digitalWrite(LED_BUILTIN, HIGH);
  sysexArray[6] = param_value;
  MIDI.sendSysEx(8, sysexArray, false);  
  delay(10);
 }  
 for (param_value = 63; param_value > 0; param_value--) {
  digitalWrite(LED_BUILTIN, LOW);
  sysexArray[6] = param_value;
  MIDI.sendSysEx(8, sysexArray, false);  
  delay(10);
 }
}