Merged with dev0.1.0

cores/arduino/wiring_constants.h

@@ -21,6 +21,7 @@
 
 #include <stdbool.h>
 #include <stdint.h>
+#include "wiring_private.h"
 
 #define HIGH          0x1
 #define LOW           0x0
@@ -80,7 +81,8 @@ enum BitOrder
 #define sq(x)         ((x)*(x))
 
 // Bits and Bytes
-#define bit(b) (1UL << (b))
+#define _BV(bit)    (1 << (bit)) // from avr-gcc (some arduino libs uses it)
+#define bit(b)      (1UL << (b))
 #define lowByte(w)  ((uint8_t) ((w) & 0xff))
 #define highByte(w) ((uint8_t) ((w) >> 8))