#include <SoftwareSerial.h>
#include <AltSoftSerial.h>
#include <TinyGPS++.h>
//sender phone number with country code
const String PHONE = "+2557688276xx";
#define ignition_switch 4
#define ignition_sensor A0
//GSM Module RX pin to Arduino 10
//GSM Module TX pin to Arduino 11
#define rxPin 11
#define txPin 10
SoftwareSerial sim800(rxPin, txPin);
//GPS Module RX pin to Arduino 9
//GPS Module TX pin to Arduino 8
#define rxPin 8
#define txPin 9
AltSoftSerial neogps;
TinyGPSPlus gps;
String sms_status, sender_number, received_date, msg;
boolean ignition_status = false;
boolean tracking_status = false;
boolean reply_status = true; //not completely implemented
boolean anti_theft = false;
unsigned long previousMillis = 0;
long interval = 60000;
void setup() {
delay(7000);
Serial.begin(9600);
//Serial.println("Arduino serial initialize");
sim800.begin(9600);
neogps.begin(9600);
//Serial.println("neogps Software serial initialize");
//delay(1000);
pinMode(ignition_switch, OUTPUT);
pinMode(ignition_sensor, INPUT);
sms_status = "";
sender_number = "";
received_date = "";
msg = "";
sim800.print("AT+CMGF=1\r"); //SMS text mode
delay(1000);
//sendATcommand("AT+CSCLK=2", "OK", 1000);
}
void loop() {
ignition_status = getIgnitionStatus();
if (tracking_status == true && ignition_status == true) {
unsigned long currentMillis = millis();
if (currentMillis - previousMillis > interval) {
previousMillis = currentMillis;
sendGpsToServer();
}
}
if (anti_theft == true && ignition_status == true) {
digitalWrite(ignition_switch, HIGH);
}
while (sim800.available()) {
parseData(sim800.readString());
}
while (Serial.available()) {
sim800.println(Serial.readString());
}
}
void parseData(String buff) {
Serial.println(buff);
unsigned int len, index;
index = buff.indexOf("\r");
buff.remove(0, index + 2);
buff.trim();
if (buff != "OK") {
index = buff.indexOf(":");
String cmd = buff.substring(0, index);
cmd.trim();
buff.remove(0, index + 2);
//Serial.println(buff);
if (cmd == "+CMTI") {
//get newly arrived memory location and store it in temp
//temp = 4
index = buff.indexOf(",");
String temp = buff.substring(index + 1, buff.length());
temp = "AT+CMGR=" + temp + "\r";
//AT+CMGR=4 i.e. get message stored at memory location 4
sim800.println(temp);
}
else if (cmd == "+CMGR") {
extractSms(buff);
//Serial.println("extractSms Success.");
if (sender_number == PHONE) {
//Serial.println("doAction");
doAction();
deleteSms();
}
}
}
else {
}
}
void extractSms(String buff) {
unsigned int index;
Serial.println(buff);
index = buff.indexOf(",");
sms_status = buff.substring(1, index - 1);
buff.remove(0, index + 2);
sender_number = buff.substring(0, 13);
buff.remove(0, 19);
received_date = buff.substring(0, 20);
buff.remove(0, buff.indexOf("\r"));
buff.trim();
index = buff.indexOf("\n\r");
buff = buff.substring(0, index);
buff.trim();
msg = buff;
buff = "";
msg.toLowerCase();
Serial.println("----------------------------------");
Serial.println(sms_status);
Serial.println(sender_number);
Serial.println(received_date);
Serial.println(msg);
Serial.println("----------------------------------");
}
void doAction() {
//case sensitive
if (msg == "car on") {
digitalWrite(ignition_switch, HIGH);
Serial.println("Said Your Car has ON");
if (reply_status == true) {
sendSms("Said Your Car has ON");
}
}
else if (msg == "car off") {
digitalWrite(ignition_switch, LOW);
Serial.println("Said Your car has OFF");
if (reply_status == true) {
sendSms("Said Your Car has OFF");
}
}
else if (msg == "get location") {
sendSmsGPS("Location");
}
else if (msg == "anti theft on") {
anti_theft = true;
if (reply_status == true) {
sendSms("Hi Said Your Anti Theft System on And Car Will Be OFF");
}
}
else if (msg == "anti theft off") {
anti_theft = false;
if (reply_status == true) {
sendSms("Anti-Theft System OFF");
}
else if (msg == "reply on") {
reply_status = true;
sendSms("Reply has ON");
}
else if (msg == "reply off") {
reply_status = false;
}
}
else if (msg == "tracking on") {
tracking_status = true;
if (reply_status == true) {
sendSms("Live Tracking has ON");
}
}
//yet to be implemented
else if (msg == "tracking off") {
tracking_status = false;
if (reply_status == true) {
sendSms("Live Tracking has OFF");
}
}
else if (msg == "tracking status") {
if (tracking_status == false) {
sendSms("Live Tracking has OFF");
}
else {
sendSms("Live Tracking has ON");
}
}
sms_status = "";
sender_number = "";
received_date = "";
msg = "";
}
void deleteSms()
{
sendATcommand("AT+CMGD=1,4", "OK", 2000);
Serial.println("All SMS are deleted.");
}
void sendSmsGPS(String text)
{
// Can take up to 60 seconds
boolean newData = false;
for (unsigned long start = millis(); millis() - start < 2000;)
{
while (neogps.available())
{
if (gps.encode(neogps.read()))
{
newData = true;
}
}
}
if (newData) //If newData is true
{
float flat, flon;
unsigned long age;
Serial.print("Latitude= ");
Serial.print(gps.location.lat(), 6);
Serial.print(" Longitude= ");
Serial.println(gps.location.lng(), 6);
newData = false;
delay(300);
sim800.print("AT+CMGF=1\r");
delay(1000);
sim800.print("AT+CMGS=\"" + PHONE + "\"\r");
delay(1000);
sim800.print("http://maps.google.com/maps?q=loc:");
sim800.print(gps.location.lat(), 6);
sim800.print(",");
sim800.print(gps.location.lng(), 6);
delay(100);
sim800.write(0x1A); //ascii code for ctrl-26 //sim800.println((char)26); //ascii code for ctrl-26
delay(1000);
}
}
void sendSms(String text)
{
sim800.print("AT+CMGF=1\r");
delay(1000);
sim800.print("AT+CMGS=\"" + PHONE + "\"\r");
delay(1000);
sim800.print(text);
delay(100);
sim800.write(0x1A); //ascii code for ctrl-26 //sim800.println((char)26); //ascii code for ctrl-26
delay(1000);
Serial.println("SMS Sent Successfully.");
}
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 ( sim800.available() > 0) sim800.read(); // Clean the input buffer
if (ATcommand[0] != '\0')
{
sim800.println(ATcommand); // Send the AT command
}
x = 0;
previous = millis();
// this loop waits for the answer
do {
if (sim800.available() != 0) { // if there are data in the UART input buffer, reads it and checks for the asnwer
response[x] = sim800.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;
}
boolean getIgnitionStatus()
{
float val = 0;
for (int i = 1; i <= 10; i++)
{
val = val + analogRead(ignition_sensor);
}
val = val / 100;
//Serial.println(val);
if (val > 90)
{
sendSms("Hi Said Someone Trying To Start Your Bike");
sendSmsGPS("Location");
return true;
}
else if (val < 50)
{
return false;
}
}
void setIgnition()
{
ignition_status = getIgnitionStatus;
if (ignition_status == false) {
//sim800l sleep mode turned off
//must send sim800.print("AT"); here
sim800.print("AT");
sendATcommand("AT+CSCLK=0", "OK", 1000);
}
else if (ignition_status == true) {
//sim800l sleep mode turned on
sendATcommand("AT+CSCLK=2", "OK", 1000);
}
}
int sendGpsToServer()
}
Am working on Gps Tracking System with Anti Theft System with sms request. Everything works fine except when i request sms for (GET LOCATION) i do not get sms replay while in serial monitor it shows the gps coordinates but it delete and not sending sms other than that when i request for other sms i do get sms replay and everything works. I really need help please..
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