Modified micro:bit pin names to mirror micro:bit edge connector

Resolved issue: #2713

Removed pins p{0..30} definitions
Defined pins P{0..20} as per micro:bit DAL's mappings:
(https://github.com/lancaster-university/microbit-dal/blob/master/inc/drivers/MicroBitPin.h)

Developers can now use the pin names as they appear on the mbed micro:bit pinout
in https://developer.mbed.org/platforms/Microbit/#pinout

Change-Id: I72b81dbe23b11d5ef215583adb211f364b4a5e91

Author: RidaJichi

targets/TARGET_NORDIC/TARGET_MCU_NRF51822/TARGET_NRF51_MICROBIT/PinNames.h

@@ -30,134 +30,120 @@ typedef enum {
 #define PORT_SHIFT  3
 
 typedef enum {
-    p0  = 0,
-    p1  = 1,
-    p2  = 2,
-    p3  = 3,
-    p4  = 4,
-    p5  = 5,
-    p6  = 6,
-    p7  = 7,
-    p8  = 8,
-    p9  = 9,
-    p10 = 10,
-    p11 = 11,
-    p12 = 12,
-    p13 = 13,
-    p14 = 14,
-    p15 = 15,
-    p16 = 16,
-    p17 = 17,
-    p18 = 18,
-    p19 = 19,
-    p20 = 20,
-    p21 = 21,
-    p22 = 22,
-    p23 = 23,
-    p24 = 24,
-    p25 = 25,
-    p26 = 26,
-    p27 = 27,
-    p28 = 28,
-    p29 = 29,
-    p30 = 30,  
-    
-    //NORMAL PINS...
-    P0_0  = p0,
-    P0_1  = p1,
-    P0_2  = p2,
-    P0_3  = p3,
-    P0_4  = p4,
-    P0_5  = p5,
-    P0_6  = p6,
-    P0_7  = p7,
-    
-    P0_8  = p8,
-    P0_9  = p9,
-    P0_10 = p10,
-    P0_11 = p11,
-    P0_12 = p12,
-    P0_13 = p13,
-    P0_14 = p14,
-    P0_15 = p15,
-    
-    P0_16 = p16,
-    P0_17 = p17,
-    P0_18 = p18,
-    P0_19 = p19,
-    P0_20 = p20,
-    P0_21 = p21,
-    P0_22 = p22,
-    P0_23 = p23,
-    
-    P0_24 = p24,
-    P0_25 = p25,
-    P0_26 = p26,
-    P0_27 = p27,
-    P0_28 = p28,
-    P0_29 = p29,
-    P0_30 = p30,
-
+    //MCU PINS
+    P0_0  = 0,
+    P0_1  = 1,
+    P0_2  = 2,
+    P0_3  = 3,
+    P0_4  = 4,
+    P0_5  = 5,
+    P0_6  = 6,
+    P0_7  = 7,
+    P0_8  = 8,
+    P0_9  = 9,
+    P0_10 = 10,
+    P0_11 = 11,
+    P0_12 = 12,
+    P0_13 = 13,
+    P0_14 = 14,
+    P0_15 = 15,
+    P0_16 = 16,
+    P0_17 = 17,
+    P0_18 = 18,
+    P0_19 = 19,
+    P0_20 = 20,
+    P0_21 = 21,
+    P0_22 = 22,
+    P0_23 = 23,
+    P0_24 = 24,
+    P0_25 = 25,
+    P0_26 = 26,
+    P0_27 = 27,
+    P0_28 = 28,
+    P0_29 = 29,
+    P0_30 = 30,  
+   
+    //MICROBIT EDGE CONNECTOR PINS
+    P0  = P0_3,
+    P1  = P0_2,
+    P2  = P0_1,
+    P3  = P0_4,
+    P4  = P0_5,
+    P5  = P0_17,
+    P6  = P0_12,
+    P7  = P0_11,
+    P8  = P0_18,
+    P9  = P0_10,
+    P10 = P0_6,
+    P11 = P0_26,
+    P12 = P0_20,
+    P13 = P0_23,
+    P14 = P0_22,
+    P15 = P0_21,
+    P16 = P0_16,
+    P19 = P0_0,
+    P20 = P0_30,
+ 
     //PADS
-    PAD3 = p1,
-    PAD2 = p2,
-    PAD1 = p3,
+    PAD3 = P0_1,
+    PAD2 = P0_2,
+    PAD1 = P0_3,
 
 
     //LED MATRIX COLS
-    COL1 = p4,
-    COL2 = p5,
-    COL3 = p6,
-    COL4 = p7,
-    COL5 = p8,
-    COL6 = p9,
-    COL7 = p10,
-    COL8 = p11,
-    COL9 = p12,
+    COL1 = P0_4,
+    COL2 = P0_5,
+    COL3 = P0_6,
+    COL4 = P0_7,
+    COL5 = P0_8,
+    COL6 = P0_9,
+    COL7 = P0_10,
+    COL8 = P0_11,
+    COL9 = P0_12,
 
     //LED MATRIX ROWS
-    ROW1 = p13,
-    ROW2 = p14,
-    ROW3 = p15,
+    ROW1 = P0_13,
+    ROW2 = P0_14,
+    ROW3 = P0_15,
 
     //NORMAL PIN (NO SPECIFIED FUNCTIONALITY)
     //PIN_16
 
     // BUTTON A
-    BUTTON_A = p17,
+    BUTTON_A = P0_17,
 
 
     //NORMAL PIN (NO SPECIFIED FUNCTIONALITY)
     //PIN_18
 
     //TARGET RESET
-    TGT_NRESET = p19,
+    TGT_NRESET = P0_19,
 
     //NORMAL PIN (NO SPECIFIED FUNCTIONALITY)
     //PIN_20
 
     //MASTER OUT SLAVE IN
-    MOSI = p21,
+    MOSI = P0_21,
 
     //MASTER IN SLAVE OUT
-    MISO = p22,
+    MISO = P0_22,
 
     //SERIAL CLOCK
-    SCK = p23,
+    SCK = P0_23,
 
     // RX AND TX PINS
-    TGT_TX = p24,
-    TGT_RX = p25,
+    TGT_TX = P0_24,
+    TGT_RX = P0_25,
 
     //BUTTON B
-    BUTTON_B = p26,
+    BUTTON_B = P0_26,
 
     //ACCEL INTERRUPT PINS (MMA8653FC)
-    ACCEL_INT2 = p27,
-    ACCEL_INT1 = p28,
+    ACCEL_INT2 = P0_27,
+    ACCEL_INT1 = P0_28,
 
     //MAGENETOMETER INTERRUPT PIN (MAG3110)
-    MAG_INT1 = p29,
+    MAG_INT1 = P0_29,
 
     // Not connected
     NC = (int)0xFFFFFFFF,
@@ -177,10 +163,10 @@ typedef enum {
     LED4    = P0_16,
 
     //SDA (SERIAL DATA LINE)
-    I2C_SDA0 = p30,
+    I2C_SDA0 = P0_30,
 
     //SCL (SERIAL CLOCK LINE)
-    I2C_SCL0 = p0
+    I2C_SCL0 = P0_0
 
 } PinName;