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--- esib_iot_challenge [2017/05/17 17:32] – [3. Devices] samer
+++ esib_iot_challenge [2017/05/17 17:42] – [3. Devices] samer
@@ Line 54: / Line 54: @@
 </WRAP>
+Download the example sketch and open it with Arduino IDE. Now you should configure your device with the same identifiers as in the backend.
-Download the example sketch, open it with Arduino IDE and compile it.
+<WRAP center round tip 100%>
+Note that the device and application identifiers should be in little endian format. The application key is in big endian format. For example,
+''0xCA, 0xDE, 0xE2, 0xAF, 0x1C, 0xDE, 0xAD, 0x0B''
+</WRAP>
+<code c++>
+static const u1_t PROGMEM APPEUI[8]= { };
+void os_getArtEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}
+// This should also be in little endian format, see above.
+static const u1_t PROGMEM DEVEUI[8]= { };
+void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}
+static const u1_t PROGMEM APPKEY[16] = { };
+void os_getDevKey (u1_t* buf) {  memcpy_P(buf, APPKEY, 16);}
+</code>
 You can download the following sketch {{ :test-loraserver-comb-loraserver-dragino.zip |}} and modify it according to your preferences. Below you can find somme commented extracts of the sketch.