Changed pins definition in variants from constants to #defines.

Author: cmaglie

hardware/arduino/variants/mega/pins_arduino.h

@@ -32,31 +32,31 @@
 #define analogInputToDigitalPin(p)  ((p < 16) ? (p) + 54 : -1)
 #define digitalPinHasPWM(p)         (((p) >= 2 && (p) <= 13) || ((p) >= 44 && (p)<= 46))
 
-static const uint8_t SS   = 53;
-static const uint8_t MOSI = 51;
-static const uint8_t MISO = 50;
-static const uint8_t SCK  = 52;
+#define SS   53
+#define MOSI 51
+#define MISO 50
+#define SCK  52
 
-static const uint8_t SDA = 20;
-static const uint8_t SCL = 21;
+#define SDA 20
+#define SCL 21
 #define LED_BUILTIN 13
 
-static const uint8_t A0 = 54;
-static const uint8_t A1 = 55;
-static const uint8_t A2 = 56;
-static const uint8_t A3 = 57;
-static const uint8_t A4 = 58;
-static const uint8_t A5 = 59;
-static const uint8_t A6 = 60;
-static const uint8_t A7 = 61;
-static const uint8_t A8 = 62;
-static const uint8_t A9 = 63;
-static const uint8_t A10 = 64;
-static const uint8_t A11 = 65;
-static const uint8_t A12 = 66;
-static const uint8_t A13 = 67;
-static const uint8_t A14 = 68;
-static const uint8_t A15 = 69;
+#define A0 54
+#define A1 55
+#define A2 56
+#define A3 57
+#define A4 58
+#define A5 59
+#define A6 60
+#define A7 61
+#define A8 62
+#define A9 63
+#define A10 64
+#define A11 65
+#define A12 66
+#define A13 67
+#define A14 68
+#define A15 69
 
 // A majority of the pins are NOT PCINTs, SO BE WARNED (i.e. you cannot use them as receive pins)
 // Only pins available for RECEIVE (TRANSMIT can be on any pin):