senvas/midi-footcontroller
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Michael Sippel 2024-11-28 18:47:30 +01:00
commit 414fbb94f3
Signed by: senvas
GPG key ID: F96CF119C34B64A6
1 changed files with 111 additions and 0 deletions
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#define SEL_A_IN D2
#define SEL_A_LED D3
#define SEL_B_IN D4
#define SEL_B_LED D5
#define SEL_C_IN D6
#define SEL_C_LED D7
#define SEL_D_IN D8
#define SEL_D_LED D9
#define SUST_IN D10
#define EXPR_IN A0
void setup() {
pinMode( SEL_A_IN, INPUT_PULLUP );
pinMode( SEL_A_LED, OUTPUT );
pinMode( SEL_B_IN, INPUT_PULLUP );
pinMode( SEL_B_LED, OUTPUT );
pinMode( SEL_C_IN, INPUT_PULLUP );
pinMode( SEL_C_LED, OUTPUT );
pinMode( SEL_D_IN, INPUT_PULLUP );
pinMode( SEL_D_LED, OUTPUT );
pinMode( SUST_IN, INPUT_PULLUP );
pinMode( EXPR_IN, INPUT_PULLUP );
Serial.begin(31250);
}
int last_expr_val = 0;
int last_sust_val = 0;
#define NOTE_OFF 0x8
#define NOTE_ON 0x9
#define AFTERTOUCH 0xA
#define CONTROL_CHANGE 0xB
#define PATCH_CHANGE 0xC
#define CHANNEL_PRESSURE 0xD
#define PITCH_BEND 0xE
#define OTHER 0xF
//send MIDI message
void MIDImessage(int cmd_id, int data1, int data2) {
int channel = 0;
int cmd_byte = (cmd_id << 4) | (channel & 0xf);
Serial.write(cmd_byte);//send command byte
Serial.write(data1);//send data byte #1
Serial.write(data2);//send data byte #2
}
void loop() {
delay(100);
if( digitalRead( SUST_IN ) == LOW ) {
if( last_sust_val != 1 ) {
last_sust_val = 1;
MIDImessage( CONTROL_CHANGE, 0x42, 0x7f );
}
} else {
if( last_sust_val != 0 ) {
last_sust_val = 0;
MIDImessage( CONTROL_CHANGE, 0x42, 0x00 );
}
}
int expr_val = analogRead( EXPR_IN );
if( expr_val != last_expr_val )
{
last_expr_val = expr_val;
float expr_val_f = (float)(expr_val - 66) / 590.0;
if( expr_val_f < 0.0 ){
expr_val_f = 0.0;
}
if( expr_val_f > 1.0 ){
expr_val_f = 1.0;
}
int val_b = (int)(expr_val_f * 128.0);
MIDImessage( CONTROL_CHANGE, 0x0b, val_b );
}
if( digitalRead( SEL_A_IN ) == LOW ) {
MIDImessage( PATCH_CHANGE, 0x0, 0x0 );
digitalWrite( SEL_A_LED, HIGH );
digitalWrite( SEL_B_LED, LOW );
digitalWrite( SEL_C_LED, LOW );
digitalWrite( SEL_D_LED, LOW );
}
if( digitalRead( SEL_B_IN ) == LOW ) {
MIDImessage( PATCH_CHANGE, 0x1, 0x1 );
digitalWrite( SEL_A_LED, LOW );
digitalWrite( SEL_B_LED, HIGH );
digitalWrite( SEL_C_LED, LOW );
digitalWrite( SEL_D_LED, LOW );
}
if( digitalRead( SEL_C_IN ) == LOW ) {
MIDImessage( PATCH_CHANGE, 0x2, 0x2 );
digitalWrite( SEL_A_LED, LOW );
digitalWrite( SEL_B_LED, LOW );
digitalWrite( SEL_C_LED, HIGH );
digitalWrite( SEL_D_LED, LOW );
}
if( digitalRead( SEL_D_IN ) == LOW ) {
MIDImessage( PATCH_CHANGE, 0x3, 0x3 );
digitalWrite( SEL_A_LED, LOW );
digitalWrite( SEL_B_LED, LOW );
digitalWrite( SEL_C_LED, LOW );
digitalWrite( SEL_D_LED, HIGH );
}
}