// jdr 2021.04.28
// output devices - rgb led w/ attiny45
// reference: http://archive.fabacademy.org/archives/2017/fablabsingapore/students/172/exercise10.html

int rPin = PB1; 
int gPin = PB0; 
int bPin = PB2;

int pauseTime = 125;

void setup() {
  pinMode(rPin, OUTPUT);
  pinMode(gPin, OUTPUT);
  pinMode(bPin, OUTPUT);
}

void loop() {

  // COLOR CYCLE TEST

  // WHITE 
  digitalWrite(rPin, LOW);
  digitalWrite(gPin, LOW);
  digitalWrite(bPin, LOW);
  delay(pauseTime); 
  digitalWrite(rPin, HIGH);
  digitalWrite(gPin, HIGH);
  digitalWrite(bPin, HIGH);
  delay(pauseTime); 

  // RED 
  digitalWrite(rPin, LOW);
  digitalWrite(gPin, HIGH);
  digitalWrite(bPin, HIGH);
  delay(pauseTime); 
  digitalWrite(rPin, HIGH);
  digitalWrite(gPin, HIGH);
  digitalWrite(bPin, HIGH);
  delay(pauseTime); 

  // GREEN  
  digitalWrite(rPin, HIGH);
  digitalWrite(gPin, LOW);
  digitalWrite(bPin, HIGH);
  delay(pauseTime); 
  digitalWrite(rPin, HIGH);
  digitalWrite(gPin, HIGH);
  digitalWrite(bPin, HIGH);
  delay(pauseTime); 

  // BLUE 
  digitalWrite(rPin, HIGH);
  digitalWrite(gPin, HIGH);
  digitalWrite(bPin, LOW);
  delay(pauseTime); 
  digitalWrite(rPin, HIGH);
  digitalWrite(gPin, HIGH);
  digitalWrite(bPin, HIGH);
  delay(pauseTime); 
  
  
/*
  // PWM COLOR LOOP - RAMP UP  
  for(int i = 0; i<=255; i++){
    analogWrite(rPin, i);
    analogWrite(gPin, i);
    analogWrite(bPin, i);
    delay(10);
  }
  
  // PWM COLOR LOOP - RAMP DOWM 
  for(int i = 255; i>=0; i--){
    analogWrite(rPin, i);
    analogWrite(gPin, i);
    analogWrite(bPin, i);
    delay(10);
  }
  */
  
}