I have what I think is a relatively simple project: to control a few things on my KORG electribe via MIDI commands. I have a Ruggeduino + MIDI shield and I recently finished some code to 'mute' certain parts and added a start/stop toggle and send program changes. All of this is handled by the MIDI library, specifically the HandleNoteOn callback. The issue, is that both functions (start/stop & 'mute & program change') do not work nicely together for some reason.
It seems like which ever one is sent first, is the one that works. For example, if I trigger a note to start the sequencer, none of the program changes work. If I reset and trigger a program change, it works, but then 'start' does not. ???
here's some info from KORG on the recognized MIDI commands:
2.RECOGNIZED RECEIVE DATA
2-1 CHANNEL MESSAGES
+--------+---------+-------+--------------------------------------+
| Status | Second | Third | Description |
| [Hex] | [D] | | |
+--------+---------+-------+--------------------------------------+
| 8n | kk (kk) | vv | Note Off vv=0~127 |
| 9n | kk (kk) | 00 | Note Off |
| 9n | kk (kk) | vv | Note On vv=1~127 |
| Bn | 06 (06) | dd | Data Entry(MSB) [TABLE1]|
| Bn | 62 (98) | nl | NRPN LSB [TABLE1]|
| Bn | 63 (99) | nm | NRPN MSB [TABLE1]|
| Bn | 79(121) | 00 | Reset All Controllers |
| Bn | 7B(123) | 00 | All Note Off * |
| Cn | pp (pp) | -- | Program Change [NOTE1]|
+--------+---------+-------+--------------------------------------+
n : MIDI Channel No.(0~15)
NOTE1 : Pattern number
pp = 00~3F : A01~64
40~7F : B01~64
</mark></mark> <mark><mark>byte P = 0; //program or patch number byte M1 = 0; //mute for part 1 off byte M2 = 0; //mute for part 2 off byte M3 = 0; //mute for part 3 off byte M4 = 0; //mute for part 4 off byte M5 = 0; //mute for part 5 off byte M6a = 0; //mute for part 6a off byte M6b = 0; //mute for part 6b off byte M7a = 0; //mute for part 7a off byte M7b = 0; //mute for part 7b off byte S = 0; //stop/start bit</mark></mark> <mark><mark>
```
void HandleNoteOn (byte channel, byte note, byte velocity){
//if note X is sent, send program change control to go up
//todo:
if (velocity>0){
switch (note) {
case 58: //note value of A#3 or 0x3a
if (S == 0){
S++;
MIDI.sendRealTime(Start);
}
else
{
S--;
MIDI.sendRealTime(Stop);
}
break;
case 60: //note value of C4 or 0x3C, handles program change 'up'
if (P == 127){ //this notes that the program is at the highest of 127 and needs reset to 0
P=0;
MIDI.sendProgramChange(P,10);
}
else
{
P++;
MIDI.sendProgramChange(P,10);
}
break;
case 62: // note value of D4 or 0x3E, handles program change 'down'.
if (P== 0){
P=127;
MIDI.sendProgramChange(P,10);
}
else
{
P--;
MIDI.sendProgramChange(P,10);
}
break;
case 64: //part 1 mute, M variable tells us if it's muted already
if (M1==0) {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,1,10);
MIDI.sendControlChange(06,0,10); //sets level to zero, for part 1
//need to toggle it
M1=1;
}
else {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,1,10);
MIDI.sendControlChange(06,120,10);
M1=0;
}
break;
case 66:
if (M2==0) {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,9,10);
MIDI.sendControlChange(06,0,10); //sets level to zero, for part 2
//need to toggle it
M2=1;
}
else {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,9,10);
MIDI.sendControlChange(06,120,10);
M2=0;
}
break;
case 68: //mute for part 3
if (M3==0) {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,17,10);
MIDI.sendControlChange(06,0,10); //sets level to zero, for part 3
//need to toggle it
M3=1;
}
else {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,17,10);
MIDI.sendControlChange(06,120,10);
M3=0;
}
break;
case 70:
if (M4==0) {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,25,10);
MIDI.sendControlChange(06,0,10); //sets level to zero, for part 1
//need to toggle it
M4=1;
}
else {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,25,10);
MIDI.sendControlChange(06,120,10);
M4=0;
}
break;
case 72:
if (M5==0) {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,33,10);
MIDI.sendControlChange(06,0,10); //sets level to zero, for part 1
//need to toggle it
M5=1;
}
else {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,33,10);
MIDI.sendControlChange(06,120,10);
M5=0;
}
break;
case 74:
if (M6a==0) {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,41,10);
MIDI.sendControlChange(06,0,10); //sets level to zero, for part 1
//need to toggle it
M6a=1;
}
else {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,41,10);
MIDI.sendControlChange(06,120,10);
M6a=0;
}
break;
case 76:
if (M6b==0) {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,49,10);
MIDI.sendControlChange(06,0,10); //sets level to zero, for part 1
//need to toggle it
M6b=1;
}
else {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,49,10);
MIDI.sendControlChange(06,120,10);
M6b=0;
}
break;
case 78:
if (M7a==0) {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,57,10);
MIDI.sendControlChange(06,0,10); //sets level to zero, for part 1
//need to toggle it
M7a=1;
}
else {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,57,10);
MIDI.sendControlChange(06,120,10);
M7a=0;
}
break;
case 80:
if (M7b==0) {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,65,10);
MIDI.sendControlChange(06,0,10); //sets level to zero, for part 1
//need to toggle it
M7b=1;
}
else {
MIDI.sendControlChange(99,5,10);
MIDI.sendControlChange(98,65,10);
MIDI.sendControlChange(06,120,10);
M7b=0;
}
break;
} //end of switch (note)
}
}
</mark></mark> <mark><mark>and I can see (Via MIDI OX) that the correct MIDI command is being sent (I patched into the sequencer's MIDI THRU port), but the device doesn't change programs. It's like both things (send start, then send program change) can't be accomplished. </mark></mark> <mark><mark>Here's the rest of the code, if it's relevant</mark></mark> <mark><mark>
void setup() {
MIDI.begin(MIDI_CHANNEL_OMNI);
MIDI.turnThruOff();
MIDI.setHandleNoteOn(HandleNoteOn);
MIDI.sendProgramChange(P,10);
// MIDI.setHandleClock ( HandleClock );
}
void loop () {
MIDI.read(); //is there incoming MIDI?
}
```
