GPS-GPRS-tracker-sensor

GPS-GPRS-sensor.ino

#include <SoftwareSerial.h>

SoftwareSerial SIM900(7, 8);

String testJSON="{  \"coordinateX\" : 0406,  \"coordinateY\" : 1992, }";

void setup()
{
  Serial.begin(19200);
  
  //Abre comunicação entre Arduino e SIM900
  SIM900.begin(19200);

  Serial.println("Inicializando...");
  delay(1000);
  handshaking();
  connectGPRS();
  postData();
  delay(1000);
}

void loop()
{
  updateSerial();
}

void updateSerial()
{
  delay(500);
  while (Serial.available()) 
  {
    SIM900.write(Serial.read());
  }
  while(SIM900.available()) 
  {
    Serial.write(SIM900.read());
  }
}

void handshaking(){

  SIM900.println("AT"); //Handshaking com SIM900
  delay(1000);   
  updateSerial();
  
  SIM900.println("AT+CMEE=1");
  delay(1000);   
  updateSerial();
  
  SIM900.println("AT+CSQ"); //Qualidade de sinal – variação enter 0-31, 31 é o melhor
  delay(1000);
  updateSerial();
  
  SIM900.println("AT+CCID"); //Lê informação de cartão SIM para confirmar que está inserido
  delay(1000);
  updateSerial();
  
  SIM900.println("AT+CREG?"); //Confirma registro na rede
  delay(1000);
  updateSerial();
}

//Abre conexão GPRS
void connectGPRS(){
  SIM900.println("AT+SAPBR=3,1,\"Contype\",\"GPRS\"");
  delay(1000);
  updateSerial();

  SIM900.println("AT+SAPBR=3,1,\"APN\",\"www\"");//APN
  delay(1000);
  updateSerial();

  SIM900.println("AT+SAPBR=1,1");
  delay(1000);
  updateSerial();

  SIM900.println("AT+SAPBR=2,1");
  delay(1000);
  updateSerial();
}

//Performa chamada HTTP POST
void postData(){
  SIM900.println("AT+HTTPINIT");
  delay(1000);
  updateSerial();

  SIM900.println("AT+HTTPPARA=\"CID\",1");
  delay(1000);
  updateSerial();

  SIM900.println("AT+HTTPPARA=\"URL\",\"https://uenf-tracker-api.herokuapp.com/locations\"");
  delay(1000);
  updateSerial();

  SIM900.println("AT+HTTPPARA=\"Content-Type\",\"application/json\"");
  delay(1000);
  updateSerial();

  SIM900.println("AT+HTTPDATA=" + String(testJSON.length()) + ",20000");
  delay(1000);
  updateSerial;

  SIM900.println(testJSON);
  delay(1000);
  updateSerial;

  SIM900.println("AT+HTTPACTION=1");
  delay(10000);
  updateSerial();

  SIM900.println("AT+HTTPREAD");
  delay(1000);
  updateSerial();

  SIM900.println("AT+HTTPTERM");
  delay(1000);
  updateSerial();
}