Created
May 23, 2019 15:47
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midi clock and 16th notes test program
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| unsigned long BPM = 120; | |
| unsigned long PPQ = 24; | |
| unsigned long PPQ_T; | |
| unsigned long SECONDS_IN_MINUTE = 60; | |
| unsigned long MICROSECONDS_PER_PPQ = (SECONDS_IN_MINUTE * 1000000) / (BPM * PPQ); | |
| unsigned long _micros; | |
| unsigned long MICROSECONDS_PER_STEP = (SECONDS_IN_MINUTE * 1000000) / (BPM * 4); | |
| unsigned long STEP_T; | |
| bool isNoteOn; | |
| void setup() { | |
| Serial.begin(56000); | |
| PPQ_T = micros(); | |
| STEP_T = micros(); | |
| _micros = micros(); | |
| isNoteOn = false; | |
| } | |
| void loop() { | |
| _micros = micros(); | |
| if(_micros - PPQ_T >= MICROSECONDS_PER_PPQ) { | |
| PPQ_T = _micros; | |
| Serial.write((int)248); | |
| } | |
| if(_micros - STEP_T >= MICROSECONDS_PER_STEP) { | |
| STEP_T = _micros; | |
| if(isNoteOn == true) { | |
| Serial.write((uint8_t)128); // note OFF | |
| Serial.write((uint8_t)60); // note value | |
| Serial.write((uint8_t)64); // note velocity | |
| isNoteOn = false; | |
| } | |
| Serial.write((uint8_t)144); // note ON | |
| Serial.write((uint8_t)60); // note value | |
| Serial.write((uint8_t)64); // note velocity | |
| isNoteOn = true; | |
| } | |
| } |
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