Hallo,
ich habe ein Sketch gefunden, welches LED blinken lässt wenn bei einem Musiksignal der Beat kommt. Ich möchte mit einem Knopf eine Counter machen, mit dem man durch unterschiedliche Modi zippen kann. Wenn ich nun an die Stelle komme an dem ich in den Blink/Beat Teil komme (for Schleife) dann stecke ich in ihr fest. Wenn ich das durch eine if abfrage, ob der Knopf gedrückt wurde unterbrechen will, so springt mein counter auf einmal unkontrolliert irgendwo hin.
Ich hoffe ihr versteht wie mein Problem und jmd kann mir eine Lösung erklären da ich noch relativ neu auf dem Gebiet Arduino bin.
#define SAMPLEPERIODUS 200
// defines for setting and clearing register bits
#ifndef cbi
#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit))
#endif
#ifndef sbi
#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit))
#endif
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif
#define PIN 9 // Pin für die Datenleitung
#define NUMPIXELS 50 // Anzahl der WS2812 LEDs oder der NEOPIXEL
Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
unsigned long previousMillis = 0;
const long interval = 500;
const int buttonPin = 13; // the pin that the pushbutton is attached to
// the pin that the LED is attached to
// Variables will change:
int buttonPushCounter = 0; // counter for the number of button presses
int buttonState = 0;
int lastButtonState = 0;
void setup() {
pinMode(buttonPin, INPUT);
Serial.begin(9600);
pixels.begin();
// Set ADC to 77khz, max for 10bit
sbi(ADCSRA,ADPS2);
cbi(ADCSRA,ADPS1);
cbi(ADCSRA,ADPS0);
//The pin with the LED
pinMode(2, OUTPUT);
}
// 20 - 200hz Single Pole Bandpass IIR Filter
float bassFilter(float sample) {
static float xv[3] = {0,0,0}, yv[3] = {0,0,0};
xv[0] = xv[1]; xv[1] = xv[2];
xv[2] = (sample) / 3.f; // change here to values close to 2, to adapt for stronger or weeker sources of line level audio
yv[0] = yv[1]; yv[1] = yv[2];
yv[2] = (xv[2] - xv[0])
+ (-0.7960060012f * yv[0]) + (1.7903124146f * yv[1]);
return yv[2];
}
// 10hz Single Pole Lowpass IIR Filter
float envelopeFilter(float sample) { //10hz low pass
static float xv[2] = {0,0}, yv[2] = {0,0};
xv[0] = xv[1];
xv[1] = sample / 50.f;
yv[0] = yv[1];
yv[1] = (xv[0] + xv[1]) + (0.9875119299f * yv[0]);
return yv[1];
}
// 1.7 - 3.0hz Single Pole Bandpass IIR Filter
float beatFilter(float sample) {
static float xv[3] = {0,0,0}, yv[3] = {0,0,0};
xv[0] = xv[1]; xv[1] = xv[2];
xv[2] = sample / 2.7f;
yv[0] = yv[1]; yv[1] = yv[2];
yv[2] = (xv[2] - xv[0])
+ (-0.7169861741f * yv[0]) + (1.4453653501f * yv[1]);
return yv[2];
}
void loop() {
unsigned long time = micros(); // Used to track rate
float sample, value, envelope, beat, thresh;
unsigned char i;
buttonState = digitalRead(buttonPin);
// compare the buttonState to its previous state
if (buttonState != lastButtonState) {
// if the state has changed, increment the counter
if (buttonState == HIGH) {
// if the current state is HIGH then the button went from off to on:
buttonPushCounter++;
Serial.print("Programm Nummer: ");
Serial.println(buttonPushCounter);
} delay(50);
if (buttonPushCounter == 8) buttonPushCounter = 0;
if (buttonPushCounter == 7) {
for(i = 0;;++i){buttonState = digitalRead(buttonPin);
unsigned long currentMillis = millis();
//Serial.println(currentMillis);
// Read ADC and center so +-512
sample = (float)analogRead(0)-503.f;
// Filter only bass component
value = bassFilter(sample);
// Take signal amplitude and filter
if(value < 0)value=-value;
envelope = envelopeFilter(value);
// Every 200 samples (25hz) filter the envelope
if(i == 200) {
// Filter out repeating bass sounds 100 - 180bpm
beat = beatFilter(envelope);
// Threshold it based on potentiometer on AN1
thresh = 0.02f * (float)analogRead(1);
// If we are above threshold, light up LED
if(beat > thresh) {digitalWrite(2, HIGH);previousMillis = currentMillis;
for(int q=0;q<5;q++){
pixels.setPixelColor(q, pixels.Color(100,255,70)); // Moderately bright green color.
pixels.show();}
for(int w=5;w<10;w++){
pixels.setPixelColor(w, pixels.Color(0,0,0)); // Moderately bright green color.
pixels.show();}}
else {digitalWrite(2, LOW);
if (currentMillis - previousMillis >= interval){
for(int r=0;r<NUMPIXELS;r++){
pixels.setPixelColor(r, pixels.Color(0,0,0)); // Moderately bright green color.
pixels.show();};}
else {
for(int w=5;w<10;w++){
pixels.setPixelColor(w, pixels.Color(100,255,70)); // Moderately bright green color.
pixels.show();}
for(int q=0;q<5;q++){
pixels.setPixelColor(q, pixels.Color(0,0,0)); // Moderately bright green color.
pixels.show();}}
}
//Reset sample counter
i = 0;
}
// Consume excess clock cycles, to keep at 5000 hz
for(unsigned long up = time+SAMPLEPERIODUS; time > 20 && time < up; time = micros());
//if (buttonState != lastButtonState) break;
}}
}}
Das der Sketch nicht einwandfrei und sauber ist, und evlt Verbesserungen vorzunehmen sind, bin ich mir bewusst 
Auto_Wechsel_Beat.ino (5.23 KB)