blynk sample

//#define BLYNK_PRINT Serial

// Select your modem:
#define TINY_GSM_MODEM_SIM800
//#define TINY_GSM_MODEM_SIM900
//#define TINY_GSM_MODEM_M590
//#define TINY_GSM_MODEM_A6

// Default heartbeat interval for GSM is 60
// If you want override this value, uncomment and set this option:
//#define BLYNK_HEARTBEAT 30

#include <TinyGsmClient.h>
#include <BlynkSimpleSIM800.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "YourAuthBlynk";

// Your GPRS credentials
// Leave empty, if missing user or pass
char apn[]  = "Internet";
char user[] = "";
char pass[] = "";


int voltage1, voltage2;
unsigned long voltage3;
String pesan;

// Hardware Serial on Mega, Leonardo, Micro
//#define SerialAT Serial1

// or Software Serial on Uno, Nano
#include <SoftwareSerial.h>
SoftwareSerial SerialAT(A2, A3); // RX, TX
TinyGsm modem(SerialAT);
BlynkTimer timer;
WidgetTerminal terminal(V2);
BLYNK_WRITE(V2);

void setup()
{
  // Debug console
  Serial.begin(9600);

  delay(10);

  // Set GSM module baud rate
  SerialAT.begin(38400);
  delay(3000);

  // Restart takes quite some time
  // To skip it, call init() instead of restart()
  Serial.println("Initializing modem...");
  modem.restart();

  // Unlock your SIM card with a PIN
  //modem.simUnlock("1234");

   Blynk.begin(auth, modem, apn, user, pass);
   timer.setInterval(1000L, sendUptime);
}

void loop()
{
  Blynk.run();
  timer.run();
}

void sendUptime(){
  voltage1 ++;
  voltage3 ++;
  voltage2 = voltage1;
  pesan = String("Terjual: ") + voltage3;

  if ( voltage1 == 100)voltage1 = 0;
  if ( voltage3 == 1000000) voltage3 = 0;
  Blynk.virtualWrite(V0, voltage1);
  Blynk.virtualWrite(V1, voltage2);

  terminal.println(pesan);
  terminal.flush();
}