more specific debug during scan

Author: ladyada

Adafruit_I2CDevice.cpp

@@ -67,14 +67,18 @@ bool Adafruit_I2CDevice::detected(void) {
 
   // A basic scanner, see if it ACK's
   _wire->beginTransmission(_addr);
+#ifdef DEBUG_SERIAL
+    DEBUG_SERIAL.print(F("Address 0x"));
+    DEBUG_SERIAL.print(_addr);
+#endif
   if (_wire->endTransmission() == 0) {
 #ifdef DEBUG_SERIAL
-    DEBUG_SERIAL.println(F("Detected"));
+    DEBUG_SERIAL.println(F(" Detected"));
 #endif
     return true;
   }
 #ifdef DEBUG_SERIAL
-  DEBUG_SERIAL.println(F("Not detected"));
+  DEBUG_SERIAL.println(F(" Not detected"));
 #endif
   return false;
 }