Kazimiero širdis

shirdis.ino

#define BPM 85//beats per minute

#define fadeinLength 20 //milliseconds
#define fadeoutLength fadeinLength * 3




#define fadeinPause fadeinLength * 1000L / 255
#define fadeoutPause fadeoutLength * 1000L /255
#define pause 60000/BPM - 255*fadeinPause*1e-3 - 255*fadeoutPause*1e-3

int ledPin = 5;    // LED connected to digital pin 9

void setup()  { 
  // nothing happens in setup 
} 

void loop()  { 
  // fade in from min to max in increments of 5 points:
  for(int fadeValue = 0 ; fadeValue <= 255; fadeValue++) { 
    // sets the value (range from 0 to 255):
    analogWrite(ledPin, fadeValue);         
    delayMicroseconds(fadeinPause);                            
  } 

  // fade out from max to min in increments of 5 points:
  for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=1) { 
    // sets the value (range from 0 to 255):
    analogWrite(ledPin, fadeValue);         
    // wait for 30 milliseconds to see the dimming effect    
    delayMicroseconds(fadeoutPause);                            
  } 
  
  delay(pause);
}