loraconf_sample.h updated

src/loraconf.sample.h

@@ -9,11 +9,13 @@
 
 /* 
 
-// Only define DEVEUI here if you don't want it to be derived from device's MAC address
+// Set your DEVEUI here, if you have one. You can leave this untouched, 
+// then the DEVEUI will be generated during runtime from device's MAC adress
 // Note: Use same format as in TTN console (cut & paste, for your convenience)
-// static const u1_t DEVEUI[8]={ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+static const u1_t DEVEUI[8]={ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 
 // Note: Use msb format for APPEUI as in TTN console (cut & paste, for your convenience)
+// For TTN, APPEUI always starts with 0x70, 0xB3, 0xD5
 static const u1_t APPEUI[8]={ 0x00, 0x00, 0x00, 0x00, 0x00, 0xD5, 0xB3, 0x70 };
 
 // This key should be in big endian format (or, since it is not really a

src/lorawan.cpp

@@ -53,7 +53,7 @@ void printKey(const char * name, const uint8_t * key, uint8_t len, bool lsb) {
   uint8_t start=lsb?len:0;
   uint8_t end = lsb?0:len;
   const uint8_t * p ;
-  char keystring[len+1] = "", keybyte[3];
+  char keystring[len+1], keybyte[3];
   for (uint8_t i=0; i<len ; i++) {
      p = lsb ? key+len-i-1 : key+i;
      sprintf(keybyte, "%02X", * p);