mirror of
https://github.com/ShikyC/Taiko-Drum-Controller-Arduino.git
synced 2024-09-23 18:48:20 +02:00
104 lines
3.0 KiB
C++
104 lines
3.0 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 12
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#define POWER_CACHE_LENGTH 3
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#define LIGHT_THRES 8000
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#define HEAVY_THRES 20000
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#define FORCED_FREQ 1000
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#include "cache.h"
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unsigned long int lastTime;
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float channelSample [CHANNELS];
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float lastChannelSample [CHANNELS];
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Cache <float, SAMPLE_CACHE_LENGTH> sampleCache [CHANNELS];
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float power [CHANNELS];
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Cache <float, POWER_CACHE_LENGTH> powerCache [CHANNELS];
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bool triggered [CHANNELS];
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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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void setup() {
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pinMode(A0, INPUT);
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pinMode(A1, INPUT);
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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 (9600);
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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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lastChannelSample [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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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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powerCache[i].put(power[i]);
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lastChannelSample[i] = channelSample[i];
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if (powerCache[i].get(1) < LIGHT_THRES) {
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triggered[i] = false;
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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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}
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if (!triggered [i]) {
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for (short int j = 0; j < POWER_CACHE_LENGTH - 1; j++) {
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if (powerCache [i].get (j - 1) >= powerCache [i].get (j)) {
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break;
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} else if (powerCache [i].get (1) >= HEAVY_THRES) {
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triggered [i] = true;
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digitalWrite(output_pins[i], LOW);
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digitalWrite(output_pins[i] + 2, LOW);
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digitalWrite(LED_BUILTIN, HIGH);
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} else if (powerCache [i].get (1) >= LIGHT_THRES) {
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triggered [i] = true;
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digitalWrite(output_pins[i], LOW);
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digitalWrite(LED_BUILTIN, HIGH);
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}
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}
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}
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unsigned int frameTime = micros () - lastTime;
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lastTime = micros ();
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if (frameTime < FORCED_FREQ) {
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delayMicroseconds (FORCED_FREQ - frameTime);
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}
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}
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}
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