Encoder Display rev_05

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    - Project: Encoder Display
    - Source Code NOT compiled for: Arduino Nano ESP32
    - Source Code created on: 2025-07-15 23:09:10

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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 *****/
const uint8_t encoder_KY_040_CLK_PIN_D2 = 2;
const uint8_t encoder_KY_040_DT_PIN_D3 = 3;
const uint8_t encoder_KY_040_SW_PIN_D4 = 4;

/***** DEFINITION OF I2C PINS *****/
const uint8_t angleDisplay_LCD1602I2C_I2C_PIN_SDA_A4 = A4;
const uint8_t angleDisplay_LCD1602I2C_I2C_PIN_SCL_A5 = A5;
const uint8_t angleDisplay_LCD1602I2C_I2C_SLAVE_ADDRESS = 39;

/****** LIBRARY CLASS INSTANCES *****/
// Instantiate LCD object with I2C address
LCDIC2 lcd(angleDisplay_LCD1602I2C_I2C_SLAVE_ADDRESS, 16, 2);
// Instantiate encoder object
SimpleEncoder encoder(encoder_KY_040_SW_PIN_D4, encoder_KY_040_CLK_PIN_D2, encoder_KY_040_DT_PIN_D3);
// Variable to store the angle in degrees
float angleDegrees = 0.0;

void setup(void)
{
    // put your setup code here, to run once:
    pinMode(encoder_KY_040_CLK_PIN_D2, INPUT);
    pinMode(encoder_KY_040_DT_PIN_D3, INPUT);
    pinMode(encoder_KY_040_SW_PIN_D4, INPUT_PULLUP);
    // Initialize LCD
    lcd.begin();
    // Display initial message
    lcd.clear();
    lcd.print("Angle: 0.0");
}

void loop(void)
{
    // Update encoder state
    encoder.adjustValue();
    // Calculate the angle in degrees based on encoder value
    // Assuming encoder value ranges from 0 to 360 for full rotation
    // Adjust as per your encoder's resolution and value range
    angleDegrees = (float)encoder.VALUE;
    // Display the angle on LCD
    lcd.setCursor(0, 0);
    lcd.print("Angle: ");
    lcd.print(angleDegrees);
    lcd.print(" deg");
    // Small delay to avoid flickering
    delay(100);
}