Fix Gen7 1.4 pinout

Gen7 1.4 uses very different pin assignments, might as well make a new
section and remove some of the conditionals from each. It's easier to change
your pin assingment this way if like me you don't wire it exactly to plan.

Marlin/pins.h

@@ -45,16 +45,11 @@
 #endif /* 99 */
 
 /****************************************************************************************
-* Gen7 v1.1, v1.2, v1.3, v1.4 pin assignment
+* Gen7 v1.1, v1.2, v1.3 pin assignment
 *
 ****************************************************************************************/
 
 
-#if MOTHERBOARD == 13
-#define MOTHERBOARD 11
-#define GEN7_VERSION 14 // v1.4
-#endif
-
 #if MOTHERBOARD == 12
 #define MOTHERBOARD 11
 #define GEN7_VERSION 13 // v1.3
@@ -121,12 +116,81 @@
 #endif
 #define PS_ON_PIN 15
 
-#if (GEN7_VERSION < 14)
-// Gen 1.3 and earlier supplied thermistor power via PS_ON
-// Need to ignore the bad thermistor readings on those units
-#define BOGUS_TEMPERATURE_FAILSAFE_OVERRIDE
+//our pin for debugging.
+#define DEBUG_PIN 0
+
+//our RS485 pins
+#define TX_ENABLE_PIN 12
+#define RX_ENABLE_PIN 13
+
+#endif
+
+/****************************************************************************************
+* Gen7 v1.4 pin assignment
+*
+****************************************************************************************/
+
+#if MOTHERBOARD == 13
+#define GEN7_VERSION 14 // v1.4
+#endif
+
+#if MOTHERBOARD == 13
+#define KNOWN_BOARD
+
+#if !defined(__AVR_ATmega644P__) && !defined(__AVR_ATmega644__) && !defined(__AVR_ATmega1284P__)
+#error Oops! Make sure you have 'Gen7' selected from the 'Tools -> Boards' menu.
+
+#endif
+
+#ifndef GEN7_VERSION
+#define GEN7_VERSION 14 // v1.x
 #endif
 
+//x axis pins
+#define X_STEP_PIN 29
+#define X_DIR_PIN 28
+#define X_ENABLE_PIN 25
+#define X_MIN_PIN 0
+#define X_MAX_PIN -1
+
+//y axis pins
+#define Y_STEP_PIN 27
+#define Y_DIR_PIN 26
+#define Y_ENABLE_PIN 25
+#define Y_MIN_PIN 1
+#define Y_MAX_PIN -1
+
+//z axis pins
+#define Z_STEP_PIN 23
+#define Z_DIR_PIN 22
+#define Z_ENABLE_PIN 25
+#define Z_MIN_PIN 2
+#define Z_MAX_PIN -1
+
+//extruder pins
+#define E0_STEP_PIN 19
+#define E0_DIR_PIN 18
+#define E0_ENABLE_PIN 25
+
+#define TEMP_0_PIN 0
+#define TEMP_1_PIN -1
+#define TEMP_2_PIN -1
+#define TEMP_BED_PIN 1
+
+#define HEATER_0_PIN 4
+#define HEATER_1_PIN -1
+#define HEATER_2_PIN -1
+#define HEATER_BED_PIN 3
+
+
+#define SDPOWER -1
+#define SDSS -1 // SCL pin of I2C header
+#define LED_PIN -1
+
+#define FAN_PIN -1
+
+#define PS_ON_PIN 15
+
 //our pin for debugging.
 #define DEBUG_PIN 0