Sketch for getting location from GSM towers.

gistfile1.txt

/**************************************************************
 *
 * This sketch connects to a website and downloads a page.
 * It can be used to perform HTTP/RESTful API calls.
 *
 * TinyGSM Getting Started guide:
 *   https://tiny.cc/tinygsm-readme
 *
 **************************************************************/

// Your GPRS credentials (leave empty, if missing)
const char apn[]      = "chili"; // Your APN
const char gprsUser[] = ""; // User
const char gprsPass[] = ""; // Password
const char simPIN[]   = ""; // SIM card PIN code, if any

// TTGO T-Call pin definitions
#define MODEM_RST            5
#define MODEM_PWKEY          4
#define MODEM_POWER_ON       23
#define MODEM_TX             27
#define MODEM_RX             26
#define I2C_SDA              21
#define I2C_SCL              22

// Set serial for debug console (to the Serial Monitor, default speed 115200)
#define SerialMon Serial
// Set serial for AT commands (to the module)
#define SerialAT  Serial1

// Configure TinyGSM library
#define TINY_GSM_MODEM_SIM800      // Modem is SIM800
#define TINY_GSM_RX_BUFFER   1024  // Set RX buffer to 1Kb

// Define the serial console for debug prints, if needed
//#define TINY_GSM_DEBUG SerialMon
//#define DUMP_AT_COMMANDS

#include <Wire.h>
#include <TinyGsmClient.h>
#include "utilities.h"

#ifdef DUMP_AT_COMMANDS
  #include <StreamDebugger.h>
  StreamDebugger debugger(SerialAT, SerialMon);
  TinyGsm modem(debugger);
#else
  TinyGsm modem(SerialAT);
#endif


// Server details
const char server[] = "enx5hjar0vnp.x.pipedream.net";
const char resource[] = "/";


TinyGsmClient client(modem);
const int  port = 80;

String responce = "";



String SIM800_send(String incoming) {

    SerialAT.println(incoming); 
    delay(1000); //Print what is being sent to GSM module 

    String result = "";

    while (SerialAT.available()) { //Wait for result 

      char letter = SerialAT.read();
      result = result + String(letter); //combine char to string to get result 

    }

    return result; //return the result 
}


void setup() {
  // Set console baud rate
  SerialMon.begin(115200);
  delay(10);

  // Keep power when running from battery
  Wire.begin(I2C_SDA, I2C_SCL);
  bool   isOk = setPowerBoostKeepOn(1);
  SerialMon.println(String("IP5306 KeepOn ") + (isOk ? "OK" : "FAIL"));

  // Set-up modem reset, enable, power pins
  pinMode(MODEM_PWKEY, OUTPUT);
  pinMode(MODEM_RST, OUTPUT);
  pinMode(MODEM_POWER_ON, OUTPUT);

  digitalWrite(MODEM_PWKEY, LOW);
  digitalWrite(MODEM_RST, HIGH);
  digitalWrite(MODEM_POWER_ON, HIGH);

  // Set GSM module baud rate and UART pins
  SerialAT.begin(115200, SERIAL_8N1, MODEM_RX, MODEM_TX);
  delay(5000);

  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  SerialMon.println("Initializing modem...");
  modem.restart();
  // Or, use modem.init() if you don't need the complete restart

  String modemInfo = modem.getModemInfo();
  SerialMon.print("Modem: ");
  SerialMon.println(modemInfo);

  // Unlock your SIM card with a PIN if needed
  if (strlen(simPIN) && modem.getSimStatus() != 3 ) {
    modem.simUnlock(simPIN);
  }

  responce = SIM800_send("ATE1"); //Enable Echo if not enabled by default
  SerialMon.print ("Responce:"); 
  SerialMon.println(responce);
  delay(5000);


  responce = SIM800_send("AT+CGATT=1"); //Set the SIM800 in GPRS mode
  SerialMon.print ("Responce:"); 
  SerialMon.println(responce);
  delay(5000);

  responce = SIM800_send("AT+SAPBR=3,1,\"CONTYPE\",\"GPRS\" "); //Activate Bearer profile
  SerialMon.print ("Responce:"); 
  SerialMon.println(responce);
  delay(5000);

  responce = SIM800_send("AT+SAPBR=3,1,\"APN\",\"chili\" "); //Set VPN options => 'RCMNET' 'www'
  SerialMon.print ("Responce:"); 
  SerialMon.println(responce);
  delay(5000);

  responce = SIM800_send("AT+SAPBR=1,1"); //Open bearer Profile
  SerialMon.print ("Responce:"); 
  SerialMon.println(responce); //Open bearer Profile
  delay(5000);

  responce = SIM800_send("AT+SAPBR=2,1"); //Get the IP address of the bearer profile
  SerialMon.print ("Responce:"); 
  SerialMon.println(responce);
  delay(5000);
}

void loop() {
  responce = "";
  SerialMon.print("Waiting for network...");
  if (!modem.waitForNetwork(240000L)) {
     SerialMon.println(" fail");
     delay(10000);
     return;
  }
  SerialMon.println(" OK");

  if (modem.isNetworkConnected()) {
     SerialMon.println("Network connected");
  }

  SerialMon.print(F("Connecting to APN: "));
  SerialMon.print(apn);
  
  if (!modem.gprsConnect(apn, gprsUser, gprsPass)) {
    SerialMon.println(" fail");
    delay(10000);
    return;
  }
  
  SerialMon.println(" OK");
  

  SerialAT.println("AT+CIPGSMLOC=1,1"); 
  delay(5000); //Request for location data

  while (SerialAT.available()) {

       char letter = SerialAT.read();

       responce = responce + String(letter); //Store the location information in string responce 

  }

  SerialMon.print("Result Obtained as:");   
  SerialMon.print(responce); 
  SerialMon.println("*******");



  
  SerialMon.print("Connecting to ");
  SerialMon.print(server);
  if (!client.connect(server, port)) {
    SerialMon.println(" fail");
    delay(10000);
    return;
  }
  SerialMon.println(" OK");


  



  // Make a HTTP GET request:
  SerialMon.println("Performing HTTP GET request...");
  client.print(String("GET ") + resource + " HTTP/1.1\r\n");
  client.print(String("Host: ") + server + "\r\n");
  client.print("Connection: close\r\n\r\n");
  client.println();

  unsigned long timeout = millis();
  while (client.connected() && millis() - timeout < 10000L) {
    // Print available data
    while (client.available()) {
      char c = client.read();
      SerialMon.print(c);
      timeout = millis();
    }
  }
  SerialMon.println();
  

  


  SerialAT.println("AT+CIPGSMLOC=1,1"); 
  delay(5000); //Request for location data

  while (SerialAT.available()) {

       char letter = SerialAT.read();

       responce = responce + String(letter); //Store the location information in string responce 

  }

  SerialMon.print("Result Obtained as:");   
  SerialMon.print(responce); 
  SerialMon.println("*******");



  // Shutdown

//  client.stop();
  SerialMon.println(F("Server disconnected"));

//  modem.gprsDisconnect();
  SerialMon.println(F("GPRS disconnected"));

  // Do nothing forevermore
  //while (true) {
    delay(10000);
  //}
}