// === Rayshon miller ====

// Module #6 project #include <Wire.h> //lcd

#include <LiquidCrystal_I2C.h> //lcd

LiquidCrystal_I2C lcd(0x27,16,2); //set the LCD address to 0x3F for a 16 chars and 2-line display

// if it does not work then try 0x3F, if both addresses do not work then run the scan code below

const int bzr=32; // GPIO32 to connect the Buzzer

//==================== LCD ====================

const int red_LED1 = 14; // The red LED1 is wired to ESP32 board pin GPIO14

const int yellow_LED1 =12; // The yellow LED1 is wired to ESP32 board pin GPIO12

const int green_LED1 = 13; // The green LED1 is wired to ESP32 board pin GPIO13

const int red_LED2 = 25; // The red LED2 is wired to Mega board pin GPIO25

const int yellow_LED2 = 26; // The yellow LED2 is wired to Mega board pin GPIO 26

const int green_LED2 = 27; // The green LED2 is wired to Mega board pin GPIO 27

int Xw_value;

const int Xw_button = 19; //Cross Walk button

void setup()

{


Serial.begin(115200);

pinMode(Xw_button, INPUT_PULLUP); // 0=pressed, 1 = unpressed button

lcd.init(); // initialize the lcd lcd.backlight();

lcd.setCursor(0,0); // column#4 and Row #1

lcd.print(" === CEIS114 ===");

pinMode(bzr,OUTPUT);

pinMode(red_LED1, OUTPUT); // initialize digital pin 14 (Red LED1) as an output.

pinMode(yellow_LED1, OUTPUT); // initialize digital pin12 (yellow LED1) as an output.

pinMode(green_LED1, OUTPUT); // initialize digital pin 13 (green LED1) as an output.

pinMode(red_LED2, OUTPUT); // initialize digital pin 25(Red LED2) as an output.

pinMode(yellow_LED2, OUTPUT); // initialize digital pin 26 (yellow LED2) as an output.

pinMode(green_LED2, OUTPUT); // initialize digital pin 27 (green LED2) as an output.
}

// the loop function runs over and over again forever

void loop()

{

// read the cross walk button value:

Xw_value=digitalRead(Xw_button);

if (Xw_value == LOW ){ // if crosswalk button (X-button) pressed

digitalWrite(yellow_LED1 , LOW); // This should turn off the YELLOW LED1

digitalWrite(green_LED1, LOW); // This should turn off the GREEN LED1

digitalWrite(yellow_LED2 , LOW); // This should turn off the YELLOW LED2

digitalWrite(green_LED2, LOW); // This should turn off the GREEN LED2

for (int i=10; i>= 0; i--)

{

Serial.print(" Count = ");

Serial.print(i);

Serial.println(" == Walk == ");

lcd.setCursor(0,1); // set the cursor to column 1, line 2

// lcd.clear(); // clears the display to print new message

lcd.print(" ");

lcd.setCursor(0,1); // set the cursor to column 1, line 2

lcd.print(" == Walk == "); // Walk characters to the LCD.


lcd.print(i); // Print the count to the LCD

digitalWrite(red_LED1, HIGH); // This should turn on the RED LED1

digitalWrite(red_LED2, HIGH); // This should turn on the RED LED2 digitalWrite(bzr, HIGH);

delay(500);

digitalWrite(red_LED1, LOW); // This should turn off the RED LED1

digitalWrite(red_LED2, LOW); // This should turn off the RED LED2 digitalWrite(bzr, LOW);

delay(500);

} // End of counter

// clears the display to print new message

// ===== lcd.clear();

lcd.setCursor(0,1); // set the cursor to column 1, line 2

lcd.print(" ");

} //

else // No Emergency ===

{

lcd.setCursor(0,1); // set the cursor to column 1, line 2

lcd.print(" = Do Not Walk ="); // Do Not Walk characters to the LCD.
Serial.println(" == Do Not Walk == ");

// The next three lines of code turn on the red LED1

digitalWrite(red_LED1, HIGH); // This should turn on the RED LED1


digitalWrite(yellow_LED1 , LOW); // This should turn off the YELLOW LED1

digitalWrite(green_LED1, LOW); // This should turn off the GREEN LED1

delay(1000); //Extended time for Red light#1 before the Green of the other side turns

// The next three lines of code turn on the red LED2

digitalWrite(red_LED2, LOW); // This should turn off the RED LED2

digitalWrite(yellow_LED2 , LOW); // This should turn off the YELLOW LED2

digitalWrite(green_LED2, HIGH); // This should turn on the GREEN LED2

delay(2000); // wait for 1 second

// The next three lines of code turn on the red LED1

digitalWrite(red_LED1, HIGH); // This should turn on the RED LED1

digitalWrite(yellow_LED1 , LOW); // This should turn off the YELLOW LED1

digitalWrite(green_LED1, LOW); // This should turn off the GREEN LED1

// The next three lines of code turn on the red LED2

digitalWrite(red_LED2, LOW); // This should turn on the RED LED2

digitalWrite(yellow_LED2 , HIGH); // This should turn off the YELLOW LED2

digitalWrite(green_LED2, LOW); // This should turn off the GREEN LED2

delay(2000); // wait for 1 second


// The next three lines of code turn on the red LED2

digitalWrite(red_LED2, HIGH); // This should turn on the RED LED2

digitalWrite(yellow_LED2 , LOW); // This should turn off the YELLOW LED2

digitalWrite(green_LED2, LOW); // This should turn off the GREEN LED2

delay(1000); //Extended time for Red light#2 before the Green of the other side turns

// The next three lines of code turn on the yellow LED1

digitalWrite(red_LED1, LOW); // This should turn off the RED LED1

digitalWrite(yellow_LED1 , LOW); // This should turn off the YELLOW LED1

digitalWrite(green_LED1, HIGH); // This should turn off the GREEN LED1

delay(2000); // wait for 1 second
// The next three lines of code turn on the yellow LED1

digitalWrite(red_LED1, LOW); // This should turn off the RED LED1

digitalWrite(yellow_LED1 , HIGH); // This should turn on the YELLOW LED1

digitalWrite(green_LED1, LOW); // This should turn off the GREEN LED1

// The next three lines of code turn on the red LED2

digitalWrite(red_LED2, HIGH); // This should turn on the RED LED2

digitalWrite(yellow_LED2 , LOW); // This should turn off the YELLOW LED2

digitalWrite(green_LED2, LOW); // This should turn off the GREEN LED2

delay(2000); // wait for 1 second

}// Emergency Button closing ============

}