// Software Serial Library
#include <ADJSoftwareSerial.h>
// Setup pin 2 and 3 as RX, TX for Software Serial
SoftwareSerial GSerial(2, 3); // RX, TX
//Defining Variables
//the time we give the sensor to calibrate (10-60 secs according to the datasheet)
int calibrationTime = 10;
//the time when the sensor outputs a low impulse
long unsigned int lowIn;
//the amount of milliseconds the sensor has to be low
//before we assume all motion has stopped
long unsigned int pause = 5000;
// the use for these variables will be defined in the LOOP Function
boolean lockLow = true;
boolean takeLowTime;
//the digital pin connected to the PIR sensor's output
int pirPin = 7;
// This is the pin for the connected pir LED
//تجديد منÙØ° 9 باسم pirled
int pirled = 9;
// This is the pin for the connected SMS LED
//تجديد منÙØ° 10 باسم txtled
int txtled = 10;
//************** WARNING: put value = 0 if you don't want the GSM to delete any msgs from SIM Card*********************
// the number of msgs deleted after recieving your control SMS this is to not max your SIM memory
#define NUM_MSGS_DELETE 5
//recive buffer max number of char
#define MAXCHAR 200
//recive gsm module back signal
char buff[MAXCHAR];
//recive index
int j = 0;
//track time for the GSM to response
int g_timeout = 0;
// AT COMMANDS
//////////////////////////////// Insert your Data //////////////////////////////////////////////
char CPIN[] = "AT+CPIN=\"0000\""; // pin code if required
#define SEND_MSG_NUM "AT+CMGS=\"0503000000\"\r\n" // Phone Number to Receive SMS MSG
#define SEND_MSG_TXT "Motheebotonics ! GSM is Working" // SMS TEXT DATA
#define CALL_NUM "ATD0503000000;\r\n" // Emergency Call Number For Motion
//////////////////////////////// Insert your Data
// clean buffer
void clearBuff(void)
{
for (j = 0; j <= MAXCHAR; j++)
{
buff[j] = 0x00;
}
j = 0;
}
// reads the input from GSM and saves it to buffer
int readSerial(char result[])
{
int i = 0;
//delay(200);
while (GSerial.available() > 0)
{
char inChar = GSerial.read();
Serial.write(inChar);
if (inChar != '\r')
{
result[i] = inChar;
i++;
}
if (i >= MAXCHAR - 1 )
{
result[i] = '\0';
GSerial.flush();
return 0;
}
}
result[i] = '\0';
GSerial.flush();
return 0;
}
// handles the wait for a response from GSM that exactly match the provided String
int Hand(char *s){
clearBuff();
//delay(300);
readSerial(buff);
if (strstr(buff, s) != NULL)
{
g_timeout = 0;
clearBuff();
return 1;// in case of a match return 1
}
if (g_timeout > 50)
{
g_timeout = 0;
return -1; // in case of a time out return -1
}
g_timeout++;
return 0; // in case of a not match add 1 to the time out and return 0
}
// setup for GSM using AT Commands
void AT(void){
clearBuff();
GSerial.println("ATE0"); //check if connected to GSM
GSerial.flush();
Serial.println("ATE0");
delay(500);
readSerial(buff);
while (strstr(buff, "OK") == NULL)
{
clearBuff();
GSerial.println("ATE0");
GSerial.flush();
Serial.println("ATE0");
delay(500);
readSerial(buff);
}
Serial.println("Module is Working");
while (1)
{
clearBuff();
GSerial.println("AT+CREG?"); // Network registration
GSerial.flush();
delay(500);
readSerial(buff);
// check if 1 (home network) or 5 (roaming)
if ((strstr(buff, "0,1") != NULL) || (strstr(buff, "0,5") != NULL))
{
clearBuff();
break;
}
else
{
delay(1000);
}
}
clearBuff();
GSerial.println("AT+CMGF=1\r");// set SMS to TEXT MODE delay(500);
while (Hand("OK") == 0);
Serial.println("SMS TEXT MODE Done");
clearBuff();
GSerial.println("AT+CPMS=\"SM\"\r\n");// set memory to SIM delay(500);
while (Hand("OK") == 0);
return;
}
void send_txt(){
clearBuff();
GSerial.println("AT+CMGF=1\r");
delay(500);
while (Hand("OK") == 0);
clearBuff();
GSerial.println(SEND_MSG_NUM);
delay(500);
while (Hand(">") == 0);
GSerial.println(SEND_MSG_TXT);
delay(1000);
while (Hand("OK") == 0);
return;
}
void send_call(){
clearBuff();
GSerial.println("AT+CPAS\r");// check phone status before calling twice
GSerial.flush();
delay(500);
if (Hand("0") != 1) {
Serial.println("Already calling");
return;
}
GSerial.println(CALL_NUM);
delay(2000);
while (Hand("OK") == 0);
delay(3000);
return;
}
void read_txt(void){
clearBuff();
GSerial.println("AT+CMGL=\"REC UNREAD\"\r"); // an AT command to show all unread msgs and convert them to read
GSerial.flush();
delay(500);
clearBuff();
readSerial(buff);
if ((strstr(buff, "ON") != NULL)) { // is there ON in SMS?
digitalWrite(txtled, HIGH); // if yes then turn ON
delete_msgs(); // delete all msgs
return;
}
if ((strstr(buff, "OFF") != NULL)) { // is there OFF in SMS?
digitalWrite(txtled, LOW); // if yes then turn LED OFF
delete_msgs(); // delete all msgs
return;
}
return;
}
// delete number of msgs specified earlier
void delete_msgs() {
int i;
Serial.println("Deleting ALL MSGs");
for (i = 1; i < NUM_MSGS_DELETE + 1; i++) {
GSerial.print("AT+CMGD=");
GSerial.print(i);
GSerial.print("\r\n");
delay(10);
}
}
//******************** SETUP Arduino ****************
void setup() {
Serial.begin(9600); //Set BaudRate to default baud rate 9600 for both computer and GSM
GSerial.begin(9600);
GSerial.setTimeout(5000);// set Serial timeout
pinMode(pirPin, INPUT);
pinMode(pirled, OUTPUT);
pinMode(txtled, OUTPUT);
digitalWrite(pirPin, LOW);
digitalWrite(txtled, LOW);
digitalWrite(pirled, LOW);
//give the sensor some time to calibrate
Serial.print("calibrating sensor ");
for (int i = 0; i < calibrationTime; i++) {
Serial.print(".");
delay(1000);
}
Serial.println("SENSOR ACTIVE");
delay(50);
AT();
Serial.println("GSM ACTIVE");
}
void loop() {
// check if GSM receive any SMS, if so, then read it
if (GSerial.available() > 0) {
Serial.println("check available");
delay(2000);
clearBuff();
GSerial.println("AT+CPAS\r");// check phone status before calling twice
GSerial.flush();
delay(500);
if (Hand("0") != 1) {
Serial.println("Already calling");
}
else{
read_txt();
}
}
if (digitalRead(pirPin) == HIGH) {
digitalWrite(pirled, HIGH); //motion detected, turn on LED
if (lockLow) {
//makes sure we wait for a transition to LOW before any further output is made:
lockLow = false;
Serial.println("---");
Serial.print("motion detected at ");
Serial.print(millis() / 1000);
Serial.println(" sec");
delay(100);
send_call(); // calling for emergency
}
takeLowTime = true;
}
if (digitalRead(pirPin) == LOW) {
if (takeLowTime) {
lowIn = millis(); //save the time of the transition from high to LOW
takeLowTime = false;
}
//if the sensor is low for more than the given pause,
//we assume that no more motion is going to happen
if (!lockLow && millis() - lowIn > pause) {
//makes sure this block of code is only executed again after
//a new motion sequence has been detected
lockLow = true;
Serial.print("motion ended at ");
Serial.print((millis() - pause) / 1000);
Serial.println(" sec");
delay(100);
digitalWrite(pirled, LOW);//turn off led
}
}
delay(1000);
}