103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/***************************************************************
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* *
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* Taiko Sanro - Arduino *
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* Support Arduino models with ATmega32u4 microprocessors *
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* *
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* Shiky Chang Chris *
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* zhangxunpx@gmail.com wisaly@gmail.com *
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* *
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***************************************************************/
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// New implementation using fast, stable and sensitive piezoelectric
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// ceramic sensors (the same sensors used in electirc drum kit).
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// No longer need microphones.
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#define CHANNELS 2
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#define SAMPLE_CACHE_LENGTH 5
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#define DON_SILENCE_THRES 5e3
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#define DON_LIGHT_THRES 5e4
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#define DON_HEAVY_THRES 1e5
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#define KAT_SILENCE_THRES 2e3
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#define KAT_LIGHT_THRES 5e3
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#define KAT_HEAVY_THRES 1e4
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//#define FORCED_PERIOD 700
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#include "cache.h"
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unsigned long lastTime;
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float channelSample[CHANNELS];
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Cache <float, SAMPLE_CACHE_LENGTH> sampleCache[CHANNELS];
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float power[CHANNELS];
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bool triggered [CHANNELS];
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float light_thres[] = {DON_LIGHT_THRES, KAT_LIGHT_THRES};
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float heavy_thres[] = {DON_HEAVY_THRES, KAT_HEAVY_THRES};
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float silence_thres[] = {DON_SILENCE_THRES, KAT_SILENCE_THRES};
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int input_pins[] = {A0, A1}; // Don, Kat
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int output_pins[] = {A2, A3, A4, A5}; // Left Don, Left Kat, Right Don, Right Kat
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String debug_output[] = {"DON", "KAT"};
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void setup() {
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pinMode(A2, OUTPUT);
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pinMode(A3, OUTPUT);
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pinMode(A4, OUTPUT);
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pinMode(A5, OUTPUT);
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Serial.begin (115200);
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// analogReference (INTERNAL);
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for (short int i = 0; i < CHANNELS; i++) {
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power [i] = 0;
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triggered [i] = false;
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}
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lastTime = 0;
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}
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void loop() {
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lastTime = micros ();
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for (short int i = 0; i < CHANNELS; i++) {
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channelSample[i] = analogRead(input_pins[i]);
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sampleCache[i].put(channelSample [i]);
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long int tempInt;
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tempInt = sampleCache[i].get(1);
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power[i] -= tempInt * tempInt;
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tempInt = sampleCache[i].get();
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power[i] += tempInt * tempInt;
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if (power[i] < silence_thres[i]) {
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digitalWrite(output_pins[i], HIGH);
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digitalWrite(output_pins[i] + 2, HIGH);
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digitalWrite(LED_BUILTIN, LOW);
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triggered[i] = false;
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} else if (power[i] > light_thres[i]) {
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if (!triggered [i]) {
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digitalWrite(output_pins[i], LOW);
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if (power[i] >= heavy_thres[i]) {
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digitalWrite(output_pins[i] + 2, LOW);
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}
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digitalWrite(LED_BUILTIN, HIGH);
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// Serial.println(debug_output[i]);
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}
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triggered[i] = true;
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if (i == 0) {
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triggered[1] = true;
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break;
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}
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}
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}
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Serial.print(power[0]);
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Serial.print("\t");
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Serial.println(power[1]);
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}
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void longMicroDelay (float microTime) {
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delay (microTime / 1000);
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delayMicroseconds (microTime - floor(microTime / 1000) * 1000);
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}
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