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stepper-motor-synth
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test: play Twinkle Twinkle Little Star

This commit is contained in:
Peter Cai 2021-06-10 14:08:19 +08:00
parent adb9d5444b
commit 534850a4ff
1 changed files with 29 additions and 5 deletions
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34
main.cpp
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@ -33,15 +33,39 @@ int main() {
motors[i].Init();
}
// Test: play a C chord
motors[0].TickAtPitch(60); // C4
motors[1].TickAtPitch(64); // E4
motors[2].TickAtPitch(67); // G4
// Test: play Twinkle Twinkle Little Star
unsigned long note_time = 500ul * 1000ul; // 500 ms
unsigned int seq_motor[4][15] = {
{ 60, 60, 67, 67, 69, 69, 67, 0, 65, 65, 64, 64, 62, 62, 60 },
{ 57, 57, 64, 64, 65, 65, 64, 0, 62, 62, 60, 60, 59, 59, 57},
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},
{ 48, 48, 53, 53, 48, 48, 0, 0, 53, 53, 48, 48, 55, 55, 48},
};
unsigned long last_note_ts = 0;
int cur_note = -1;
while (true) {
unsigned long cur_micros = micros();
handle_tick(cur_micros);
if (cur_micros - last_note_ts >= note_time) {
last_note_ts = cur_micros;
cur_note += 1;
for (int i = 0; i < 4; i++) {
if (seq_motor[i][cur_note] != 0) {
motors[i].TickAtPitch(seq_motor[i][cur_note]);
} else {
motors[i].TickOff();
}
// Prevent out of bounds access
if (cur_note >= 15) {
motors[i].TickOff();
while (true) {}
}
}
}
}
return 0;