// === Erik Keepper ====
// Module #5 project

//North South LEDs pin configuration
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

//East West LEDs pin configuration
const int red_LED2 = 25; // The red LED2 is wired to ESP32 board pin GPIO25
const int yellow_LED2 = 26; // The yellow LED2 is wired to ESP32 board pin GPIO 26
const int green_LED2 = 27; // The green LED2 is wired to ESP32 board pin GPIO 27

//setup crosswalk value and button variables
const int Xw_button = 19; //Cross Walk button
bool Xw_value = false;

//Define what happens when interrupt is activated
void IRAM_ATTR crosswalkB()
{// Cross Walk button interrupt handler
  Xw_value = true;
}


// the setup function runs once when you press reset or power the board
void setup()
{
//setup crosswalk button as input and attach the Interrupt
pinMode(Xw_button, INPUT_PULLUP); //0=pressed, 1 = unpressed button
attachInterrupt(Xw_button, crosswalkB, RISING);


//setup serial speed
Serial.begin(115200);


// NS pin direction set to output
pinMode(red_LED1, OUTPUT); // initialize digital pin 14 (Red LED1) as an output.
pinMode(yellow_LED1, OUTPUT); // initialize digital pin 12 (Yellow LED1) as an output.
pinMode(green_LED1, OUTPUT); // initialize digital pin 13 (Green LED1) as an output.
//EW pin direction set to 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.
}// end of loop


// this loop function runs over and over again forever - keeps the main program always running
void loop()
{//while Crosswalk button pressed
while (Xw_value == true)
{//if crosswalk button (X-button) pressed

delay(500);
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 ==");


//flash led during walk countdown
digitalWrite(red_LED1, HIGH); // This should turn on the RED LED1
digitalWrite(red_LED2, HIGH); // This should turn on the RED LED2
delay(500); //wait 0.5 seconds
digitalWrite(red_LED1, LOW); // This should turn off the RED LED1
digitalWrite(red_LED2, LOW); // This should turn off the RED LED2
delay(500); //wait 0.5 seconds
}// End of counter


//reset before leaving the loop
Xw_value = false;
}// End of while Crosswalk is pressed


//while Crosswalk button is not pressed
while(Xw_value == false)
{
delay(500);
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); // Thiss should turn off the GREEN LED1
delay(1000); //Extended time for Red light#1 before the Green of the other side turns ON

// 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(1000); // 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 off the RED LED2
digitalWrite(yellow_LED2, HIGH); // This should turn on the YELLOW LED2
digitalWrite(green_LED2, LOW); // This should turn off the GREEN LED2
delay(1000); // wait for 1 second

// The next three lines of code turn on the yellow LED2
digitalWrite(red_LED2, HIGH); // This should turn on the RED LED1
digitalWrite(yellow_LED2, LOW); // This should turn off the YELLOW LED1
digitalWrite(green_LED2, LOW); // This should turn off the GREEN LED1
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 on the GREEN LED1
delay(1000); // 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(1000); // wait for 1 second
}//End of While NOT
}//End of program