//*********************************************
//*                                           *
//* Name         Logan Dinnendahl             *
//* Program name PWM LED Fader (part one)     *
//* Date         2023-03-21                   *
//* Desc         light chaser with            *
//*              potentiometers and LCD       *
//*                                           *
//*********************************************

#include <LiquidCrystal_I2C.h> // Includes LCD in the progra,
#define I2C_ADDR    0x27   // Defining graphics for LCD...
#define LCD_COLUMNS 16
#define LCD_LINES   2

LiquidCrystal_I2C lcd (I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int redLED   = 6;      // Pin for red LED
int greenLED = 5;      // Pin for green LED
int blueLED  = 3;      // Pin for blue LED
int redPot   = A0;     // Position for Red Potentiometer
int greenPot = A1;     // Position for Green Potentiometer
int bluePot  = A2;     // Position for Blue Potentiometer
int blue     = 0;      // Value that will be printed on the LCD
int green    = 0;      // Value that will be printed on the LCD
int red      = 0;      // Value that will be printed on the LCD



void setup() {
  lcd.init(); // intilizing LCD screen
  lcd.backlight(); // Turn on backlight
  lcd.setCursor(0, 0); // set cursor
  lcd.print("*LED FADER v1.0*");  // Printing message

  pinMode(redLED, OUTPUT);   // Setup for red pin
  pinMode(greenLED, OUTPUT); // Setup for green pin
  pinMode(blueLED, OUTPUT);  // Setup for blue pin 

  analogWrite(redLED, 225);   // 0 = ON  225 = OFF...
  analogWrite(greenLED, 225); 
  analogWrite(blueLED, 225); 
  delay (2000);   // Delay for LCD startup screen 
  lcd.setCursor (0, 0); // Writing position 
  lcd.print ("RED   GRN   BLU "); // Printing message 

}// end setup()      

void loop() {
  blue = (analogRead(bluePot ) /4);  // Converting analog values into RGB...
  red  = (analogRead(redPot ) /4);
  green= (analogRead(greenPot ) /4);

  analogWrite(blueLED , blue);  // Deciding the value of the LEDs...
  analogWrite(redLED , red);
  analogWrite(greenLED, green);
  lcd.setCursor(0, 1);         // Position of Writing 
  lcd.print (red);             // Printing Red Value 
  lcd.setCursor(6, 1);         // Position of Writing 
  lcd.print (green);           // Printing Green Value 
  lcd.setCursor(12, 1);        // Position of Writing 
  lcd.print (blue);            // Printing Blue Value 
} // end void loop