3. ARDUINO GSM CODE

GSM BASED PROJECT - PHASE 1

#include <SoftwareSerial.h>
 SoftwareSerial mySerial(2,3);

long microsecondsToInches();
long microsecondsToCentimeters();

void StatusCheck();

const int trigPin =12;
const int echoPin =13;
const int trigPin1= 6;
const int echoPin1= 7;
const int Buzzer = 10;      // Buzzer pin

int xpin = A0;
int pin1 =9;


float n,a,b;
int m;
int sms_count=1, sms_count_wet=1;
long duration,inches,cm;

void setup() {
  
 mySerial.begin(9600);   // Setting the baud rate of GSM Module  
  Serial.begin(9600);    // Setting the baud rate of Serial Monitor (Arduino)
  delay(100);
  pinMode(Buzzer, OUTPUT);
  pinMode(pin1,OUTPUT);
  }

void loop() {
  
  StatusCheck();
  CheckSurrounding();
  CheckType();
  }


void CheckSurrounding()
{
  a=CheckENV();

  if(a<20)
  {
    delay(2000);
    b=CheckENV();
    if(b<20)
    {
       digitalWrite(Buzzer, HIGH);   // turn on buzzer
       delay(3000);              // wait for 3 seconds
       digitalWrite(Buzzer, LOW); // buzzer off
    }
  }
}

void StatusCheck()
{
  n=CheckLevel();

  if(n > 45 && n < 60)
  {
    delay(3000);
    if(n > 45 && n < 60)
    {
      Serial.print(" \n DUSTBIN IS EMPTY \n");
       sms_count=1;
       sms_count_wet=1;
    }
  }
  
  if(n < 10)
  {
    Serial.print("SECOND CHECK!!\n");
    delay(3000);
    m=CheckLevelTrue();
    if (m == 1)
    {
      Serial.print("ALERT!!\n");
      Alert();
    }
    else
    Serial.print("NO ALERT!!\n");
  }
 
  
}

void CheckType()
{
    int var = analogRead(xpin);
  
 
if (var < 900)
 {

  Serial.print("WASTE IS WET\n");
   if (sms_count_wet==1)
   {
    
    Serial.print("sms_count_wet=1\n");
    SendMessageWet();
    sms_count_wet=0;
   }
   
 
 }
else
 
  Serial.print("WASTE IS DRY \n");
    Serial.print("\n");
    delay(1000);

}

float CheckENV()
{
  pinMode(trigPin1,OUTPUT);
digitalWrite(trigPin1,LOW);
delayMicroseconds(2);
digitalWrite(trigPin1,HIGH);
delayMicroseconds(10);
digitalWrite(trigPin1,LOW);
pinMode(echoPin1,INPUT);
duration=pulseIn(echoPin1,HIGH);

inches= microsecondsToInches(duration);
cm= microsecondsToCentimeters(duration);

//Serial.print(inches);
//Serial.print("in, Surroundings ");
//Serial.print(cm);
//Serial.print("cm , Surroundings");
//Serial.println();
delay(100);

return cm;
}

float CheckLevel()
{
  pinMode(trigPin,OUTPUT);
digitalWrite(trigPin,LOW);
delayMicroseconds(2);
digitalWrite(trigPin,HIGH);
delayMicroseconds(10);
digitalWrite(trigPin,LOW);
pinMode(echoPin,INPUT);
duration=pulseIn(echoPin,HIGH);

inches= microsecondsToInches(duration);
cm= microsecondsToCentimeters(duration);

Serial.print(inches);
Serial.print("in, ");
Serial.print(cm);
Serial.print("cm");
Serial.println();
delay(100);

return cm;
}

int CheckLevelTrue()
{
  pinMode(trigPin,OUTPUT);
digitalWrite(trigPin,LOW);
delayMicroseconds(2);
digitalWrite(trigPin,HIGH);
delayMicroseconds(10);
digitalWrite(trigPin,LOW);
pinMode(echoPin,INPUT);
duration=pulseIn(echoPin,HIGH);

inches= microsecondsToInches(duration);
cm= microsecondsToCentimeters(duration);

Serial.print(inches);
Serial.print("check in, ");
Serial.print(cm);
Serial.print("check cm");
Serial.println();
delay(100);

 if(cm < 10)
  {
return 1;
}
else
return 0;
}


void Alert()
{
  Serial.print("\n SMS COUNT \n");
  Serial.print(sms_count);
  if(sms_count==1)
  {
     delay(100);
     SendMessage();
     sms_count=0;
  }  
}



void SendMessage()
{
  mySerial.println("AT+CMGF=1");    //Sets the GSM Module in Text Mode
  delay(2000);  // Delay of 1000 milli seconds or 1 second
  mySerial.println("AT+CMGS=\"+917259592096\"\r"); // Replace x with mobile number
  delay(2000);
  mySerial.println("ECE LAB DUSTBIN FULL , PLEASE ADDRESS ME !!!");// The SMS text you want to send
  delay(200);
  mySerial.println((char)26);// ASCII code of CTRL+Z
  delay(5000);
  mySerial.println("ECE LAB DUSTBIN FULL , PLEASE ADDRESS ME !!!");
}

void SendMessageWet()
{
  mySerial.println("AT+CMGF=1");    //Sets the GSM Module in Text Mode
  delay(2000);  // Delay of 1000 milli seconds or 1 second
  mySerial.println("AT+CMGS=\"+917259592096\"\r"); // Replace x with mobile number
  delay(2000);
  mySerial.println("WET WASTE FOUND IN ECE LAB DUSTBIN !!!");// The SMS text you want to send
  delay(200);
  mySerial.println((char)26);// ASCII code of CTRL+Z
  delay(5000);
  mySerial.println("WET WASTE FOUND IN ECE LAB DUSTBIN !!!");
}


long microsecondsToInches(long microseconds)
                        {
                          return microseconds/74/2;
                        }
long microsecondsToCentimeters(long microseconds)
                        {
                          return microseconds/29/2;
                        
                        }