#include <SoftwareSerial.h>

#define RxNodePin 12
#define TxNodePin 13

uint8_t sigfoxMsg[12];
SoftwareSerial Sigfox(RxNodePin, TxNodePin);

void setup() {
  Serial.begin(115200);
  Sigfox.begin(9600);
  delay(300);
  Serial.print("Device ID: " + getID()); 
  Serial.print("Device PAC Number: " + getPAC());
  delay(100);
}

void loop() {
 memcpy(sigfoxMsg, &temperatura, sizeof(temperatura));
 sendMessage(mensajeSigfox, 8);
}

String getID () {
  String deviceId = "";
  char sigfoxBuffer;
  Sigfox.print("AT$I=10\r");
  while (!Sigfox.available()){
     delay(20);
  }
  
  while(Sigfox.available()){
    sigfoxBuffer = Sigfox.read();
    deviceId += sigfoxBuffer;
    delay(20);
  }
  return deviceId;
}

String getPAC (){
  String pacNumber = "";
  char sigfoxBuffer;

  // to WISOL to GET PAC number
  Sigfox.print("AT$I=11\r");
  while (!Sigfox.available()){
     delay(10);
  }
  while(Sigfox.available()){
    sigfoxBuffer = Sigfox.read();
    pacNumber += sigfoxBuffer;
    delay(10);
  }
  return pacNumber;
}

String sendMessage(uint8_t sigfoxMsg[], int bufferSize) {
  String status = "";
  char sigfoxBuffer;

  Sigfox.print("AT$SF=");
  for(int i= 0;i<bufferSize;i++){
    
    if (sigfoxMsg<0x10) 
    {
     Sigfox.print("0");
    }
    Sigfox.print(String(sigfoxMsg, HEX));
  }

 Sigfox.print("\r");

  while (!Sigfox.available()){
     delay(10);
  }

  while(Sigfox.available()){
    sigfoxBuffer = (char)Sigfox.read();
    status += sigfoxBuffer;
    delay(10);
  }

  return status;
}