**LED Control** rev_01

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    - Project: **LED Control**
    - Source Code NOT compiled for: Arduino Nano
    - Source Code created on: 2024-12-06 23:30:12

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Add rotary potentiometer (a7 pin) to change speed */
    /* of led's cycle. So, i want current values of time */
    /* (millis startTime) be like middle, standart, when */
    /* i rotate a potentiometer, the speed must increase */
    /* or decrease respectively. */
/****** SYSTEM REQUIREMENT 2 *****/
    /* Implement a rotary potentiometer on pin A0 to */
    /* adjust the LED cycle speed. The speed should vary */
    /* based on the potentiometer's position, affecting */
    /* the timing of LEDs on pins D2, D3, and D4. */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <EasyButton.h> //https://github.com/evert-arias/EasyButton

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t 5_PushButton_PIN_D5       = 5;

/***** DEFINITION OF ANALOG INPUT PINS *****/
const uint8_t a7_Potentiometer_Vout_PIN_A0      = A0;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t 2_LED_PIN_D2      = 2;
const uint8_t 3_LED_PIN_D3      = 3;
const uint8_t 4_LED_PIN_D4      = 4;

/***** DEFINITION OF OUTPUT RAW VARIABLES *****/
/***** used to store raw data *****/
bool    2_LED_PIN_D2_rawData        = 0;
bool    3_LED_PIN_D3_rawData        = 0;
bool    4_LED_PIN_D4_rawData        = 0;

/***** DEFINITION OF OUTPUT PHYSICAL VARIABLES *****/
/***** used to store data after characteristic curve transformation *****/
float   2_LED_PIN_D2_phyData        = 0.0;
float   3_LED_PIN_D3_phyData        = 0.0;
float   4_LED_PIN_D4_phyData        = 0.0;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/

// Variable to hold the speed of LED cycle
unsigned long ledCycleSpeed = 1000; // Default speed in milliseconds

void setup(void)
{
    // put your setup code here, to run once:

    pinMode(5_PushButton_PIN_D5,    INPUT_PULLUP);
    pinMode(a7_Potentiometer_Vout_PIN_A0,   INPUT);

    pinMode(2_LED_PIN_D2,    OUTPUT);
    pinMode(3_LED_PIN_D3,    OUTPUT);
    pinMode(4_LED_PIN_D4,    OUTPUT);
}

void turnOffLeds() {
    digitalWrite(4_LED_PIN_D4, LOW);
    digitalWrite(3_LED_PIN_D3, LOW);
    digitalWrite(2_LED_PIN_D2, LOW);
}

bool isSwitchPressed() {
    if (digitalRead(5_PushButton_PIN_D5) == LOW) {
        delay(50);
        return digitalRead(5_PushButton_PIN_D5) == LOW;
    }
    return false;
}

void loop(void)
{
    // Update the LED cycle speed based on the potentiometer value
    int potValue = analogRead(a7_Potentiometer_Vout_PIN_A0); // Read the potentiometer value
    ledCycleSpeed = map(potValue, 0, 1023, 100, 2000); // Map the value to a range of 100ms to 2000ms

    updateOutputs(); // Refresh output data

    if (isSwitchPressed()) {
        turnOffLeds();
        return;
    }
    digitalWrite(4_LED_PIN_D4, HIGH);
    digitalWrite(3_LED_PIN_D3, LOW);
    digitalWrite(2_LED_PIN_D2, LOW);
    for (unsigned long startTime = millis(); millis() - startTime < ledCycleSpeed;) {
        if (isSwitchPressed()) {
            turnOffLeds();
            return;
        }
    }

    digitalWrite(4_LED_PIN_D4, HIGH);
    digitalWrite(3_LED_PIN_D3, HIGH);
    for (unsigned long startTime = millis(); millis() - startTime < ledCycleSpeed;) {
        if (isSwitchPressed()) {
            turnOffLeds();
            return;
        }
    }

    digitalWrite(4_LED_PIN_D4, LOW);
    digitalWrite(3_LED_PIN_D3, LOW);
    digitalWrite(2_LED_PIN_D2, HIGH);
    for (unsigned long startTime = millis(); millis() - startTime < ledCycleSpeed;) {
        if (isSwitchPressed()) {
            turnOffLeds();
            return;
        }
    }

    for (int i = 0; i < 4; i++) {
        digitalWrite(2_LED_PIN_D2, HIGH);
        for (unsigned long startTime = millis(); millis() - startTime < ledCycleSpeed;) {
            if (isSwitchPressed()) {
                turnOffLeds();
                return;
            }
        }
        digitalWrite(2_LED_PIN_D2, LOW);
        for (unsigned long startTime = millis(); millis() - startTime < ledCycleSpeed;) {
            if (isSwitchPressed()) {
                turnOffLeds();
                return;
            }
        }
    }
}

void updateOutputs()
{
    digitalWrite(2_LED_PIN_D2, 2_LED_PIN_D2_rawData);
    digitalWrite(3_LED_PIN_D3, 3_LED_PIN_D3_rawData);
    digitalWrite(4_LED_PIN_D4, 4_LED_PIN_D4_rawData);
}

/* END CODE */