| Tempo::Tempo(){ | |
| tapIdx = 0; | |
| isDoubleTap = false; | |
| tempo = 500; | |
| } | |
| void Tempo::init(){ | |
| for(uint8_t idx = 0; idx < TAP_COUNT; idx++){ | |
| tapTimes[idx] = 0; | |
| } | |
| } | |
| void Tempo::tap(){ | |
| uint8_t idx = tapIdx % TAP_COUNT; | |
| tapTimes[idx] = millis(); | |
| this -> runCalc(); | |
| tapIdx++; | |
| } | |
| void Tempo::runCalc(){ | |
| uint8_t beats = 0; | |
| uint16_t durration = 0; | |
| isDoubleTap = false; | |
| for(uint8_t idx = 1; idx < TAP_COUNT; idx++){ | |
| int16_t diff = tapTimes[idx] - tapTimes[idx - 1]; | |
| if(diff > DOUBLE_TAP_PERIOD && diff < MAXIMUM_PERIOD){ | |
| beats++; | |
| durration += diff; | |
| }else if(diff > 0 && diff < DOUBLE_TAP_PERIOD){ | |
| isDoubleTap = true; | |
| tapTimes[idx] = tapTimes[idx-1]; | |
| } | |
| } | |
| if(beats > 0){ | |
| tempo = durration/beats; | |
| } | |
| } | |