Add sketch for get Dev EUI

Author: Gonzalo Casas

01_get_deveui/01_get_deveui.ino

@@ -0,0 +1,20 @@
+#include <MKRWAN.h>
+
+// Select your region (AS923, AU915, EU868, KR920, IN865, US915, US915_HYBRID)
+_lora_band region = EU868;
+
+LoRaModem modem(Serial1);
+
+void setup() {
+  Serial.begin(115200);
+  while (!Serial);
+  if (!modem.begin(region)) {
+    Serial.println("Failed to start module");
+    while (1) {}
+  };
+  Serial.print("Your device EUI is: ");
+  Serial.println(modem.deviceEUI());
+}
+
+void loop() {
+}