Encoder Display rev_08

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    - Project: Encoder Display
    - Source Code NOT compiled for: Arduino Nano ESP32
    - Source Code created on: 2025-07-15 23:24:27

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Capture the rotational angle in degrees from the */
    /* KY-040 rotary encoder and show the result on an */
    /* LCD screen through I2C communication, leveraging */
    /* the SimpleEncoder library. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <Wire.h>
#include <SimpleEncoder.h> // http://github.com/EasyG0ing1/SimpleEncoder
#include <LCDIC2.h>        // https://github.com/offcircuit/LCDIC2

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);

/***** DEFINITION OF DIGITAL INPUT PINS *****/
// Corrected variable names: replace hyphens with underscores
const uint8_t encoder_KY040_CLK_PIN_D2 = 2;
const uint8_t encoder_KY040_DT_PIN_D3 = 3;
const uint8_t encoder_KY040_SW_PIN_D4 = 4;

/***** DEFINITION OF I2C PINS *****/
// Not used directly in code; default I2C pins for ESP32 are used
const uint8_t angleDisplay_LCD1602I2C_I2C_SLAVE_ADDRESS = 39;

/****** LIBRARY CLASS INSTANCES *****/
SimpleEncoder encoder(encoder_KY040_CLK_PIN_D2, encoder_KY040_DT_PIN_D3, encoder_KY040_SW_PIN_D4);
LCDIC2 lcd(angleDisplay_LCD1602I2C_I2C_SLAVE_ADDRESS, 16, 2);

void setup(void)
{
  // Initialize LCD
  if (lcd.begin()) {
    lcd.print("Encoder Angle:");
  }
  // Set pin modes for encoder pins
  pinMode(encoder_KY040_CLK_PIN_D2, INPUT);
  pinMode(encoder_KY040_DT_PIN_D3, INPUT);
  pinMode(encoder_KY040_SW_PIN_D4, INPUT_PULLUP);
}

void loop(void)
{
  // Read the encoder angle in degrees
  float angleDegrees = encoder.getValue(); // getValue() returns the angle in degrees

  // Display the angle on the LCD
  lcd.setCursor(0, 1);
  lcd.print("Angle: ");
  lcd.print(angleDegrees);
  lcd.print(" deg   "); // Extra spaces to clear previous longer values

  delay(200); // Small delay for stability
}

/* END CODE */