Hi Everyone,
I am brand new to Arduino and am trying to set up an RGB Led to cycle through colors when I press a button and then stop when I press the button again. So far, I have gotten the light to cycle when I press a button, but it only cycles through the colors once and then settles on red. To turn it off, I have to wait until the cycle completes for the button press to register and turn off the LED.
I would like to be able to turn on the cycle as soon as I press the button as for the cycle itself to keep repeating rather than only shifting through the colors once.
Any help on my code would be appreciated.
const int greenPin = 5; // Green LED pin
const int bluePin = 2; // Blue LED pin
const int buttonPin = 11;
boolean lastButton = HIGH; // HIGH is the not pressed state
boolean currentButton = HIGH;
boolean ledOn = false;
int counter = 0;
const int maxBright = 225; // Maximum LED brightness
void setup() {
// put your setup code here, to run once:
Serial.begin(9600); // starts serial communication
pinMode (redPin, OUTPUT); // sets the digital pin to output
pinMode (greenPin, OUTPUT);
pinMode (bluePin, OUTPUT);
pinMode (buttonPin, INPUT_PULLUP); //define pinMOde and use Pull-up resister
serialOut(ledOn, counter); //write the initial state of the LED
}
void setColor(int redValue, int greenValue, int blueValue){
analogWrite(redPin, redValue);
analogWrite(greenPin, greenValue);
analogWrite(bluePin, blueValue);
}
void loop() {
// put your main code here, to run repeatedly:
int longDelay = 1000; // fading time between colors
int shortDelay = 10; // short time delay between colors
int redValue;
int greenValue;
int blueValue;
int ledGear;
currentButton = debounce(lastButton);
if(lastButton == LOW && currentButton == HIGH){
counter += 1;
ledOn = !ledOn; // shorthand way to switch to the opposite setting
if (ledOn == true){
Serial.print("Cycling RGB");
redValue = maxBright;
greenValue = 0;
blueValue = 0;
ledGear = 1;
do {
setColor(redValue, greenValue, blueValue);
//First Gear - Fade from Red to Green
if (ledGear == 1) {
redValue -= 1;
greenValue += 1;
}
//Second Gear - Fade from Green to Blue
if (ledGear == 2){
greenValue -= 1;
blueValue += 1;
}
//Third Gear - Fade from Blue to Red
if (ledGear == 3){
blueValue -= 1;
redValue +=1;
}
//Gear Switching
if (greenValue == maxBright) ledGear = 2;
if (blueValue == maxBright) ledGear = 3;
if (redValue == maxBright+1) ledGear = 4;
delay(shortDelay);
} while (ledGear < 4);
}
if (ledOn == false){
digitalWrite(redPin, ledOn);
digitalWrite(greenPin, ledOn);
digitalWrite(bluePin, ledOn);
}
serialOut(ledOn, counter); //write state of the LED and the number of times pushed
}
lastButton = currentButton;
}
// Deboucing function
boolean debounce(boolean last){
boolean current = digitalRead(buttonPin);
if(last != current){
delay(5);
current = digitalRead(buttonPin);
}
return current;
}
//printing function
void serialOut(boolean ledState, int i){
Serial.print("LED is");
if (ledState) Serial.print("ON - pressed");
if(!ledState) Serial.print("OFF- pressed");
Serial.print(i);
Serial.println(" times");
}
type or paste code here
