Sigfox Shield for Arduino（UnaShield）をATコマンドのみで動かす

#include

#define rxPin 5
#define txPin 4
SoftwareSerial Sigfox =  SoftwareSerial(rxPin, txPin);

void setup() {
  Serial.begin(9600);

  // open Softserial Communication
  pinMode(rxPin, INPUT);
  pinMode(txPin, OUTPUT);
  Sigfox.begin(9600);
  delay(100);

  sendCommand("AT$I=10", "Sigfox Device ID:");
  sendCommand("AT$IF=923200000", "UL Frequency set: ");
  sendCommand("AT$DR=922200000", "DL Frequency set: ");
  sendCommand("ATS410=1" ,"Public key: ");
  sendCommand("AT$WR", "Save config: ");
  sendCommand("AT$T?", "Get module temperature: ");
}

void loop() {
  // put your main code here, to run repeatedly:
  sendMessage("AT$SF=1234567890abcdef\r", "Send Message: ");
}

//Send Sigfox Command
String sendCommand(String cmd, String display){
  Sigfox.print(cmd);
  Sigfox.print("\r");
  delay(100);

  return displayStatus(display + cmd);
}

//Send Sigfox Message
String sendMessage(String cmd, String display) {
  sendCommand(cmd, display);
  while (true) {
    String status = displayStatus("");
    if (status.length()) {
      delay(60000);
      break;
    }
    delay(100);
  }
}

String displayStatus(String message) {
  String status = "";
  char output;

  while(Sigfox.available()){
    output = (char)Sigfox.read();
    status += output;
    delay(10);
  }
  if (message.length()) Serial.println(message);
  if (status.length()) Serial.println(status);
  return status;
}