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Parallel sequencers work but go out of sync very quickly

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Mike Lynch 2023-12-23 15:57:37 +11:00
parent 9ce26424a9
commit b5b4c3bdd3
1 changed files with 14 additions and 10 deletions
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24
Xmas/Xmas.ino
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@ -5,9 +5,13 @@
Adafruit_MCP4728 mcp;
float tuning[13];
int m1[] = { 0, 5, 5, 7, 5, 4, 2, 2, 2, 7, 7, 9, 7, 5, 4, 0, 4, 9, 9, 10, 9, 7, 5, 2, 0, 0, 2, 7, 4, 5, 0, 5, 5, 5, 4, 4, 5, 4, 2, 0, 7, 9, 7, 7, 5, 5, 12, 0, 0, 0, 2, 7, 4, 5 };
float tuning[16];
// 0 = A, 8 = F (tonic)
int m1[] = { 3, 8, 8, 10, 8, 7, 5, 5, 5, 10, 10, 12, 10, 8, 7, 3, 7, 12, 12, 13, 12, 10, 8, 5, 3, 3, 5, 10, 7, 8, 3, 8, 8, 8, 7, 7, 8, 7, 5, 3, 10, 12, 10, 10, 8, 8, 15, 3, 3, 3, 5, 10, 7, 8 };
float d1[] = { 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 2, 4, 2, 2, 2, 2, 4, 2, 2, 2, 2, 4, 2, 2, 1, 1, 1, 1, 2, 2, 1, 1, 2, 2, 2, 4 };
int m2[] = { -1, 8, 1, 2, 3, 4, 5, 0, 1, 3, 8, 8, 3, 5, 7, 8, 7, 0, 1, 3, 8 };
float d2[] = { 2, 6, 6, 6, 6, 6, 4, 2, 4, 2, 6, 6, 6, 6, 6, 6, 4, 2, 4, 2, 4 };
float gate = 0.5;
int bpm = 240;
float beat_s = 60.0 / (float)bpm;
@ -49,7 +53,7 @@ void setup(void) {
mcp.setChannelValue(MCP4728_CHANNEL_B, 0);
float n0 = 0;
for( int i = 0; i < 13; i++ ) {
for( int i = 0; i < 16; i++ ) {
tuning[i] = round(n0 + octave * (float)i / 12.0);
}
long now = millis();
@ -59,12 +63,13 @@ void setup(void) {
seq1.melody = m1;
seq1.duration = d1;
seq1.len = sizeof(m1) / sizeof(m1[0]);
Serial.println("length of seq 1 pattern");
Serial.println(seq1.len);
// seq2.last = now;
// seq2.pitch = MCP4728_CHANNEL_C;
// seq2.gate = MCP4728_CHANNEL_D;
seq2.last = now;
seq2.pitch = MCP4728_CHANNEL_C;
seq2.gate = MCP4728_CHANNEL_D;
seq2.melody = m2;
seq2.duration = d2;
seq2.len = sizeof(m2) / sizeof(m2[0]);
}
@ -72,12 +77,12 @@ void setup(void) {
void loop() {
long now = millis();
runSequencer(seq1, now);
runSequencer(seq2, now);
}
void runSequencer(sequencer& seq, long now) {
if( seq.noteOn ) {
if( now - seq.last > seq.rel ) {
Serial.println("noteOff");
noteOff(seq);
seq.last = now;
seq.play = round(beat_m * seq.duration[seq.s] * (1.0 - gate));
@ -89,7 +94,6 @@ void runSequencer(sequencer& seq, long now) {
}
} else {
if( now - seq.last > seq.play ) {
Serial.println("noteOn");
noteOn(seq, seq.melody[seq.s]);
seq.last = now;
seq.rel = round(beat_m * seq.duration[seq.s] * gate);