/* 1. Define connection and data*/
#define RLED       15
#define GLED       13
#define buzzer     4
#include <LiquidCrystal_I2C.h>
#include <TinyGPS++.h>
#include <HardwareSerial.h>
#include <Arduino.h>
#include "HX711.h"

const int LOADCELL_DOUT_PIN = 26;
const int LOADCELL_SCK_PIN = 25;
LiquidCrystal_I2C lcd(0x27,20,4);

TinyGPSPlus gps;
HardwareSerial sim(2);
HardwareSerial gpsSerial(1);

HX711 scale;
float latitude,longitude,speed;
long load;
bool status;
unsigned int i=0;
String myNumber="xxxxxxxxxx";
const int maxLoad=350; 
void setup()
{
  lcd.init();                  
  lcd.backlight();
  loadingdisplay();

  pinMode(GLED,OUTPUT);
  pinMode(RLED,OUTPUT);
  pinMode(buzzer,OUTPUT);
  digitalWrite(buzzer,LOW);
  digitalWrite(GLED,LOW);
  digitalWrite(RLED,LOW);
  
  Serial.begin(115200);
  delay(500);
  sim.begin(9600, SERIAL_8N1, 17, 16);
  delay(500);
  gpsSerial.begin(9600, SERIAL_8N1, 19, 18);
  Serial.println();
  Serial.println("HX711 Demo");
  Serial.println("Initializing the scale");
  scale.begin(LOADCELL_DOUT_PIN, LOADCELL_SCK_PIN);
  
  digitalWrite( RLED,LOW);
  digitalWrite(GLED,LOW);
  homedisplay();
  delay(2000);
}


void loop()
{
  readGPS();
  getWeight();
  home_display();
  if(load>maxLoad)
  {
   digitalWrite(GLED,HIGH);
   digitalWrite(RLED,HIGH);
   Alert(2);
   String mytext="BAJAJI WITH PLATE NO:Z001ABC AT https://www.google.com/maps?q="+String(latitude)+","+String(longitude)+ "IS OVERLOADED TO "+ String(load)+ "kg";
   sendsms(mytext);
   status=LOW;
  }
  else
  {
   digitalWrite(GLED,HIGH);
   digitalWrite(RLED,LOW);
   status=HIGH;
  }

}

void sendsms(String mytext)
{
  sim.println("AT+CMGF=1\r");
  delay(100);
  sim.println("AT+CMGS=\"" + myNumber + "\"\r");
 // sim.println("AT+CMGS=\"" + Phone + "\"\r");
  delay(500);
  //String message = notification;
  sim.println(mytext);
  delay(500);
  sim.println((char)26);
  delay(500);
  Serial.println("SMS SENT SUCCESSFULLY");
}

void readGPS()
{
  /*
  unsigned long start = millis();
  while (millis() - start < 1000) {
    while (gpsSerial.available() > 0) {
      gps.encode(gpsSerial.read());
    }
    if (gps.location.isUpdated()) {
      latitude=gps.location.lat();
      longitude=gps.location.lng();
      speed=gps.speed.kmph();
      Serial.print("LAT: ");
      Serial.println(latitude);
      Serial.print("LONG: "); 
      Serial.println(longitude);
      Serial.print("SPEED (km/h) = "); 
      Serial.println(speed);                      
    }
  }*/
  latitude= random(-900000, 900000) / 10000.0;
  longitude = random(-1800000, 1800000) / 10000.0;
  Serial.print("LAT: ");
  Serial.println(latitude);
  Serial.print("LONG: "); 
  Serial.println(longitude);
}


void getWeight() 
{     
  load=scale.get_units(10);
  load=map(load,0,2100,0,500);
  Serial.print("LOAD CAPACITY IS:");
  Serial.println(load);
}

void loadingdisplay()
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print(" TRICYCLE OVERLOAD "); 
  lcd.setCursor(0,1);
  lcd.print("*DETECTION & ALERT*"); 
  lcd.setCursor(0,2);
  lcd.print(" SYSTEM INITIALIZE ");
  lcd.setCursor(0,3);
  lcd.print("PLEASE WAIT");
  for(int k=11;k<20;k++)
  {
    lcd.setCursor(k,3);
    lcd.print(".");
    delay(500);
  }
}

void homedisplay()
{
  lcd.setCursor(0,0);
  lcd.print("TRICYCLE MONITORING "); 
  lcd.setCursor(0,1);
  lcd.print("DETECTION & ALERTING"); 
  lcd.setCursor(0,2);
  lcd.print(">OPERATION ACTIVATED");
  lcd.setCursor(0,3);
  lcd.print("--------<OO>--------");
}

void home_display()
{                                
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("TRICYCLE MONITORING ");
  lcd.setCursor(0,1);
  lcd.print("LOAD (KG):");
  lcd.setCursor(10,1);
  lcd.print(load);
  lcd.setCursor(0,2);
  lcd.print("STATUS:");
  lcd.setCursor(7,2);
  lcd.print(status?"NORMAL":"OVERLOAD");
  lcd.setCursor(0,3);
  lcd.print("LAT:");
  lcd.setCursor(4,3);
  lcd.print(latitude);
  lcd.setCursor(10,3);
  lcd.print("LON:");
  lcd.setCursor(14,3);
  lcd.print(longitude);
}

void alert_display()
{                                
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("OVER LOAD DETECTED");
  lcd.setCursor(0,1);
  lcd.print("PLEASE TAKE ACTION");
  lcd.setCursor(0,2);
  lcd.print("SENDING REPORT...");
  lcd.setCursor(0,3);
  lcd.print("--------<!!>--------");
}

void Alert(uint8_t num)
{
  for(num;num>0;num--)
  {
    tone(buzzer,300);
    delay(1000);
    noTone(buzzer);
    delay(1000);
  }
}