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/*

19-02-2019

The A. D. Patel Institute of Technology Hackathon Team from computer engineering 2nd year dept.

TEAM ID : TG001068

Definition Problem :IOT Based Accident Prone Device

*/ #include <Wire.h> #include <SoftwareSerial.h> #include <LiquidCrystal.h> #include<string.h> SoftwareSerial mySerial(3,2);

#define DEBUG true

// twelve servo objects can be created on most boards

const int rs = 10, en = 9, d4 = 7, d5 = 6, d6 = 5, d7 = 4; LiquidCrystal lcd(rs, en, d4, d5, d6, d7); int pos = 0; // variable to store the servo position

#define call_direct 13

long accelX, accelY, accelZ; float gForceX, gForceY, gForceZ;

long gyroX, gyroY, gyroZ; float rotX, rotY, rotZ;

char latitude[15]; char longitude[15]; char altitude[6]; char date[16]; char time[7]; char satellites[3]; char speedOTG[10]; char course[10];

int buttonpin=11; int bz=12; int stbus; // To save the last logic state of the button

char data[100]; int data_size;

char aux_str[30]; char aux; int x = 0; char N_S,W_E;

char frame[200]; int8_t answer,answer1; String response1 = "";
int onModulePin= 8; char aux_string[30]; int flag = 0;

char phone_number[]="+917046429193"; //enter country code in XX and Mobile number to whome you want to send SMS over YYYYYYYYYY char phone_number1[]="+919664919955"; void setup() { pinMode(buttonpin,INPUT); pinMode(call_direct, INPUT_PULLUP);

pinMode(bz, OUTPUT);
digitalWrite(bz,LOW);

pinMode(10,OUTPUT);

lcd.begin(16, 2);

// Print a message to the LCD. lcd.setCursor(3, 0);

mySerial.begin(9600); Serial.begin(9600); lcd.setCursor(0,0); lcd.print("Accident Alert"); lcd.setCursor(0,1);

lcd.print(" System "); delay(2000); lcd.clear(); lcd.print("Initializing"); lcd.setCursor(0,1); lcd.print("Please Wait..."); lcd.clear(); lcd.println("bike ready to go"); Wire.begin(); setupMPU(); getgps();

delay(1000); }

void loop() { recordAccelRegisters(); recordGyroRegisters(); printData(); digitalWrite(stbus,LOW); stbus = digitalRead(buttonpin); //Put the reading value of the switch on botao Serial.println(stbus); //Shows the logic state of the input on Serial Monitor

if(stbus== 1 && digitalRead(bz)==1 ) {

Serial.println("button pressed");
lcd.clear();
lcd.print("Button Pressed");

SendMessage1(); 
Serial.println("sent 1");

SendMessage2();
Serial.println("sent 2");
digitalWrite(bz,LOW);

}
}

void SendMessage1() { mySerial.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode delay(100); // Delay of 1000 milli seconds or 1 second mySerial.println("AT+CMGS="+917046429193"\r"); //enter country code in XX and Mobile number to whome you want to send SMS over YYYYYYYYYY delay(100); mySerial.println("I am Fine");// The SMS text you want to send delay(100); mySerial.println((char)26);// ASCII code of CTRL+Z delay(100); }

void SendMessage2() { mySerial.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode delay(100); // Delay of 1000 milli seconds or 1 second mySerial.println("AT+CMGS="+919664919955"\r"); //enter country code in XX and Mobile number to whome you want to send SMS over YYYYYYYYYY delay(100); mySerial.println("I am Fine");// The SMS text you want to send delay(100); mySerial.println((char)26);// ASCII code of CTRL+Z delay(100); }

void setupMPU(){ Wire.beginTransmission(0b1101000); //This is the I2C address of the MPU (b1101000/b1101001 for AC0 low/high datasheet sec. 9.2) Wire.write(0x6B); //Accessing the register 6B - Power Management (Sec. 4.28) Wire.write(0b00000000); //Setting SLEEP register to 0. (Required; see Note on p. 9) Wire.endTransmission();
Wire.beginTransmission(0b1101000); //I2C address of the MPU Wire.write(0x1B); //Accessing the register 1B - Gyroscope Configuration (Sec. 4.4) Wire.write(0x00000000); //Setting the gyro to full scale +/- 250deg./s Wire.endTransmission(); Wire.beginTransmission(0b1101000); //I2C address of the MPU Wire.write(0x1C); //Accessing the register 1C - Acccelerometer Configuration (Sec. 4.5) Wire.write(0b00000000); //Setting the accel to +/- 2g Wire.endTransmission(); }

void recordAccelRegisters() { Wire.beginTransmission(0b1101000); //I2C address of the MPU Wire.write(0x3B); //Starting register for Accel Readings Wire.endTransmission(); Wire.requestFrom(0b1101000,6); //Request Accel Registers (3B - 40) while(Wire.available() < 6); accelX = Wire.read()<<8|Wire.read(); //Store first two bytes into accelX accelY = Wire.read()<<8|Wire.read(); //Store middle two bytes into accelY accelZ = Wire.read()<<8|Wire.read(); //Store last two bytes into accelZ processAccelData(); }

void processAccelData(){ gForceX = accelX / 16384.0; gForceY = accelY / 16384.0; gForceZ = accelZ / 16384.0; }

void recordGyroRegisters() { Wire.beginTransmission(0b1101000); //I2C address of the MPU Wire.write(0x43); //Starting register for Gyro Readings Wire.endTransmission(); Wire.requestFrom(0b1101000,6); //Request Gyro Registers (43 - 48) while(Wire.available() < 6); gyroX = Wire.read()<<8|Wire.read(); //Store first two bytes into accelX gyroY = Wire.read()<<8|Wire.read(); //Store middle two bytes into accelY gyroZ = Wire.read()<<8|Wire.read(); //Store last two bytes into accelZ processGyroData(); }

void processGyroData() { rotX = gyroX / 131.0; rotY = gyroY / 131.0; rotZ = gyroZ / 131.0; }

void printData() { Serial.print("Gyro (deg)"); Serial.print(" X="); Serial.print(rotX); Serial.print(" Y="); Serial.print(rotY); Serial.print(" Z="); Serial.print(rotZ); Serial.print(" Accel (g)"); Serial.print(" X="); Serial.print(gForceX); Serial.print(" Y="); Serial.print(gForceY); Serial.print(" Z="); Serial.println(gForceZ);

if((gForceX>=0.20 || gForceX <= (-0.25))&&((rotZ >=80)||rotY>=50 ||rotZ<=(-100)))

{

digitalWrite(10,HIGH);
digitalWrite(5,HIGH);
Serial.println("accident");
lcd.setCursor(1, 0);
lcd.clear();
lcd.print("Accident occur");

  digitalWrite(bz,HIGH);
  
  // callNumber();
 // delay(1000);
  
// sendSMS1();
// sendSMS2();
  
  lcd.clear();
lcd.print("Message sent");

}

else { digitalWrite(5,LOW);

  RecieveMessage(); 
  Serial.println("Bike Steady");
  lcd.setCursor(3, 0);
  lcd.clear();
  
  lcd.print("Bike Steady");

}

if(gForceZ>=50 || gForceZ<= -50 ) {

digitalWrite(10,HIGH);
digitalWrite(5,HIGH);
Serial.println("accident");
lcd.setCursor(1, 0);
lcd.clear();
lcd.print("Accident occur");

  digitalWrite(bz,HIGH);

 // callNumber();
 // delay(1000);
  
// sendSMS1();
  
// sendSMS2();
  
  lcd.clear();
lcd.print("Message sent");

} }

void callNumber() {

mySerial.println("ATD7046429193;"); delay(1000); }

void RecieveMessage() { mySerial.println("AT+CNMI=2,2,0,0,0"); // AT Command to receive a live SMS delay(1000); } int8_t sendATcommand(char* ATcommand, char* expected_answer, unsigned int timeout){

uint8_t x=0,  answer=0;
char response[100];
unsigned long previous;

memset(response, '\0', 100);    // Initialice the string

delay(100);

while( mySerial.available() > 0) mySerial.read();    // Clean the input buffer

if (ATcommand[0] != '\0')
{
    mySerial.println(ATcommand);    // Send the AT command 
}


x = 0;
previous = millis();

// this loop waits for the answer
do{
    if(mySerial.available() != 0){    // if there are data in the UART input buffer, reads it and checks for the asnwer
        response[x] = mySerial.read();
        //Serial.print(response[x]);
        x++;
        if (strstr(response, expected_answer) != NULL)    // check if the desired answer (OK) is in the response of the module
        {
            answer = 1;
        }
    }
}while((answer == 0) && ((millis() - previous) < timeout));    // Waits for the asnwer with time out

return answer;

}

void getgps(void){ sendData( "AT+CGNSPWR=1",1000,DEBUG); sendData( "AT+CGPSINF=0",1000,DEBUG); }

int8_t convert2Degrees(char* input){

double deg;
double minutes;

boolean neg = false;    

//auxiliar variable
char aux[10];

if (input[0] == '-')
{
    neg = true;
    strcpy(aux, strtok(input+1, "\0"));

}
else
{
    strcpy(aux, strtok(input, "\0"));
}

// convert string to integer and add it to final float variable
double act=atof(aux);
deg = atof(aux);
Serial.println(deg);

strcpy(aux, strtok(NULL, '\0'));

minutes=atof(aux);
Serial.println(minutes);

 minutes/=1000000;

if (deg < 100) { minutes += deg; deg = 0; } else { minutes += int(deg) % 100; deg = int(deg) / 100;
}

deg=floor(act/100);
minutes=act-(100*deg);

// add minutes to degrees 
minutes/=60;
deg+=minutes;


if (neg == true)
{
    deg*=-1.0;
}

neg = false;

if( deg < 0 ){
    neg = true;
    deg*=-1;
}

float numberFloat=deg; 
int intPart[10];
int digit; 
long newNumber=(long)numberFloat;  
int size=0;

while(1){
    size=size+1;
    digit=newNumber%10;
    newNumber=newNumber/10;
    intPart[size-1]=digit; 
    if (newNumber==0){
        break;
    }
}

int index=0;
if( neg ){
    index++;
    input[0]='-';
}
for (int i=size-1; i >= 0; i--)
{
    input[index]=intPart[i]+'0'; 
    index++;
}

input[index]='.';
index++;

numberFloat=(numberFloat-(int)numberFloat);
for (int i=1; i<=6 ; i++)
{
    numberFloat=numberFloat*10;
    digit= (long)numberFloat;          
    numberFloat=numberFloat-digit;
    input[index]=char(digit)+48;
    index++;
}
input[index]='\0';

}

void sendData(String command, const int timeout, boolean debug) { String response = "";
int8_t counter=0, answer=0;

memset(frame, '\0', 200);    // Initialize the string
mySerial.println(command); 
delay(5);
if(debug){
long int time = millis();   
while( (time+timeout) > millis()){
  
  while(mySerial.available()){       
    frame[counter] += char(mySerial.read());
    counter++;
  }  
}    
  Serial.println(frame);

strtok(frame, ",");
strcpy(longitude,strtok(NULL, ",")); // Gets longitude
strcpy(latitude,strtok(NULL, ",")); // Gets latitude
strcpy(altitude,strtok(NULL, ".")); // Gets altitude 
strtok(NULL, ",");    
strcpy(date,strtok(NULL, ".")); // Gets date
strtok(NULL, ",");
strtok(NULL, ",");  
strcpy(satellites,strtok(NULL, ",")); // Gets satellites
strcpy(speedOTG,strtok(NULL, ",")); // Gets speed over ground. Unit is knots.
strcpy(course,strtok(NULL, "\r")); // Gets course

convert2Degrees(latitude);
convert2Degrees(longitude);  
Serial.println(latitude);
Serial.println(longitude);

}

}

void sendSMS1(){ char str1[100]; sendATcommand("AT+CPIN=**", "OK", 2000);

Serial.println("Connecting to the network...");

while( (sendATcommand("AT+CREG?", "+CREG: 0,1", 500) || 
        sendATcommand("AT+CREG?", "+CREG: 0,5", 500)) == 0 );

Serial.print("Setting SMS mode...");
sendATcommand("AT+CMGF=1", "OK", 1000);    // sets the SMS mode to text
Serial.println("Sending SMS");

sprintf(aux_string,"AT+CMGS=\"%s\"", phone_number);

answer1 = sendATcommand(aux_string, ">", 2000);    // send the SMS number
if (answer1 == 1)
{   mySerial.println("Your Family member has met with an Accident");// The SMS text you want to send
    mySerial.println("Find me Here:-");
  
          mySerial.println();
          mySerial.print("link :-");
          sprintf(str1,"http://maps.google.com/?q=23.155524,72.667104",longitude,latitude);
          
    mySerial.print(str1);      
    mySerial.write(0x1A);
    answer1 = sendATcommand("", "OK", 20000);
    if (answer1 == 1)
    {
        Serial.print("Sent ");    
    }
    else
    {
        Serial.print("error ");
    }
}
else
{
    Serial.print("error ");
    Serial.println(answer, DEC);
}

}

void sendSMS2(){ char str1[100]; sendATcommand("AT+CPIN=**", "OK", 2000);

Serial.println("Connecting to the network...");

while( (sendATcommand("AT+CREG?", "+CREG: 0,1", 500) || 
        sendATcommand("AT+CREG?", "+CREG: 0,5", 500)) == 0 );

Serial.print("Setting SMS mode...");
sendATcommand("AT+CMGF=1", "OK", 1000);    // sets the SMS mode to text
Serial.println("Sending SMS");

sprintf(aux_string,"AT+CMGS=\"%s\"", phone_number1);
answer1 = sendATcommand(aux_string, ">", 2000);    // send the SMS number
if (answer1 == 1)
{   mySerial.println("Your Family member has met with an Accident");// The SMS text you want to send
    mySerial.println("Find me Here:-");
    
          mySerial.println();
          mySerial.print("link :-");
          sprintf(str1,"http://maps.google.com/?q=23.155524,72.667104",longitude,latitude);
          
    mySerial.print(str1);      
    mySerial.write(0x1A);
    answer1 = sendATcommand("", "OK", 20000);
    if (answer1 == 1)
    {
        Serial.print("Sent ");    
    }
    else
    {
        Serial.print("error ");
    }
}
else
{
    Serial.print("error ");
    Serial.println(answer, DEC);
}

}

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