Setup_master_v1.1

#include <Wire.h>
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif

#define PIN 2
#define LED 13
#define BRIGHTNESS 5


#define PRE_LOAD_PIXEL 26
#define WAIT_LOAD_PIXEL 70
#define LAST_PIXEL 110

#define LOAD 'L'
#define PLAN 'P'

Adafruit_NeoPixel strip = Adafruit_NeoPixel(LAST_PIXEL, PIN, NEO_GRB + NEO_KHZ800);

int x = 0;
int loaded = 0;
int planVetted = 0;
int countProcess = 1;
int buttonPin = 3;
bool execute = false;
bool prevExecute = false;

void setup() {
  // put your setup code here, to run once:
  // Define pin #3 as input
  pinMode(buttonPin, INPUT_PULLUP);
  // Define pin #13 as output, for the LED
  pinMode(LED, OUTPUT);

  strip.begin();
  strip.setBrightness(BRIGHTNESS);
  strip.show();


  //  Serial.begin(9600);

  // Attach a function to trigger when something is received.
  //Wire.begin();
  //Wire.onReceive(receiveEvent);

}

void loop() {
  //  // Read the value of the input. It can either be 1 or 0.
  int buttonValue = digitalRead(buttonPin);
  if (buttonValue == LOW) {
    // If button pushed, turn LED on
    digitalWrite(LED, HIGH);
    execute = true;
//    if (prevExecute == false) {
//      execute = true;
//      prevExecute = true;
//    }
  } else {
    // Otherwise, turn the LED off
    digitalWrite(LED, LOW);
    execute = false;
//    prevExecute = false;
  }

  if (execute) {
    // colorWipePreLoad
    colorWipeDataFlowForward(strip.Color(0, 250, 250), 50, 0, PRE_LOAD_PIXEL); // Light Blue

    //    // Send a signal to slave for LOAD
    //    Wire.beginTransmission(9);
    //    Wire.write(LOAD);
    //    Wire.endTransmission();

    int count = 3;
    while (count > 0) {
      colorWipeDataFlowForward(strip.Color(0, 250, 0), 10, PRE_LOAD_PIXEL, WAIT_LOAD_PIXEL); // Green
      delay (100);
      colorWipeDataFlowReverse(strip.Color(0, 0, 0), 10, WAIT_LOAD_PIXEL, PRE_LOAD_PIXEL); // OFF
      count--;
    }

    //    // Wait for slave Data Loaded successfully signal
    //    if (x == '1') {

    // Move forward with data until planning
    colorWipeDataFlowForward(strip.Color(0, 250, 250), 50, PRE_LOAD_PIXEL, LAST_PIXEL); // Light Blue

    // Notify Slave to start planning & Financial Vetting
    // TBD
    // Send a signal to slave for LOAD
    //      Wire.beginTransmission(9);
    //      Wire.write(PLAN);
    //      Wire.endTransmission();
    //
    //      while(x == '2') {
    //      //Wait for Slave to complete financial vetting
    //      delay(500);
    //      }

    delay(3000);

    // Fetch data and return response
    colorWipeDataFlowReverse(strip.Color(0, 0, 0), 50, LAST_PIXEL, 0); // OFF
    countProcess--;
  }

  // Trigger motor to deliver payment options
  //TBD

  // Reset execute
  execute = false;
  prevExecute = false;
  delay(500);
}

void receiveEvent(int bytes) {
  x = Wire.read();    // read one character from the I2C
}

// Fill the dots one after the other with a color
void colorWipeDataFlowForward(uint32_t c, uint8_t wait, int start, int finish) {
  for (uint16_t i = start; i < finish; i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }
}

// Fill the dots one after the other with a color
void colorWipeDataFlowReverse(uint32_t c, uint8_t wait, int start, int finish) {
  for (uint16_t i = start; i > finish; i--) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }
}