SPINDLE/LASER pins changes

Marlin/pins_SANGUINOLOLU_11.h

@@ -24,6 +24,33 @@
  * Sanguinololu board pin assignments
  */
 
+/**
+ * Rev B    26 DEC 2016
+ *
+ * 1) added pointer to a current Arduino IDE extension
+ * 2) added support for M3, M4 & M5 spindle control commands
+ * 3) added case light pin definition
+ *
+ */
+
+/**
+ * A useable Arduino IDE extension (board manager) can be found at
+ * https://github.com/Lauszus/Sanguino
+ *
+ * This extension has been tested on Arduino 1.6.12 & 1.8.0
+ *
+ * Here's the JSON path:
+ * https://raw.githubusercontent.com/Lauszus/Sanguino/master/package_lauszus_sanguino_index.json
+ *
+ * When installing select 1.0.2
+ *
+ * Installation instructions can be found at https://learn.sparkfun.com/pages/CustomBoardsArduino
+ * Just use the above JSON URL instead of Sparkfun's JSON.
+ *
+ * Once installed select the Sanguino board and then select the CPU.
+ *
+ */
+
 #if !defined(__AVR_ATmega644P__) && !defined(__AVR_ATmega1284P__)
   #error "Oops!  Make sure you have 'Sanguino' selected from the 'Tools -> Boards' menu."
 #endif
@@ -96,19 +123,26 @@
 //
 // Misc. Functions
 //
+
 /**
- * On some broken versions of the Sanguino libraries the pin definitions are wrong,
- * which then needs SDSS as pin 24. But you should upgrade your Sanguino libraries! See #368.
+ * In some versions of the Sanguino libraries the pin
+ * definitions are wrong, with SDSS = 24 and LED_PIN = 28 (Melzi).
+ * If you encounter issues with these pins, upgrade your
+ * Sanguino libraries! See #368.
  */
 //#define SDSS               24
 #define SDSS               31
 
 #if IS_MELZI
-  #define LED_PIN          27 // On some broken versions of the Sanguino libraries the pin definitions are wrong, so LED_PIN needs to be 28. But you should upgrade your Sanguino libraries! See #368.
+  #define LED_PIN           27
 #elif MB(STB_11)
   #define LCD_BACKLIGHT_PIN 17 // LCD backlight LED
 #endif
 
+#if DISABLED(SPINDLE_LASER_ENABLE) && ENABLED(SANGUINOLOLU_V_1_2) && !(ENABLED(ULTRA_LCD) && ENABLED(NEWPANEL))  // try to use IO Header
+  #define CASE_LIGHT_PIN         4   // MUST BE HARDWARE PWM  - see if IO Header is available
+#endif
+
 //
 // LCD / Controller
 //
@@ -181,14 +215,62 @@
     #else
       #define BTN_ENC           30
     #endif
-  #elif ENABLED(OLED_PANEL_TINYBOY2)
-    #define BTN_ENC             28
-    #define LCD_SDSS            -1
-  #else  // !Panelolu2, !TinyBoy2
+  #else  // !Panelolu2
     #define BTN_ENC             16
     #define LCD_SDSS            28 // Smart Controller SD card reader rather than the Melzi
-  #endif // !Panelolu2, !TinyBoy2
+  #endif // !Panelolu2
 
   #define SD_DETECT_PIN         -1
 
 #endif // ULTRA_LCD && NEWPANEL
+
+//
+// M3/M4/M5 - Spindle/Laser Control
+//
+#if ENABLED(SPINDLE_LASER_ENABLE)
+  #if !MB(AZTEEG_X1) && ENABLED(SANGUINOLOLU_V_1_2) && !(ENABLED(ULTRA_LCD) && ENABLED(NEWPANEL))  // try to use IO Header
+
+    #define SPINDLE_LASER_ENABLE_PIN 10  // Pin should have a pullup/pulldown!
+    #define SPINDLE_LASER_PWM_PIN     4  // MUST BE HARDWARE PWM
+    #define SPINDLE_DIR_PIN          11
+
+  #elif !MB(MELZI)  // use X stepper motor socket
+
+    /**
+     *  To control the spindle speed and have an LCD you must sacrifice
+     *  the Extruder and pull some signals off the X stepper driver socket.
+     *
+     *  The following assumes:
+     *   - The X stepper driver socket is empty
+     *   - The extruder driver socket has a driver board plugged into it
+     *   - The X stepper wires are attached the the extruder connector
+     */
+
+    /**
+     *  Where to get the spindle signals
+     *
+     *      spindle signal          socket name       socket name
+     *                                         -------
+     *                               /ENABLE  O|     |O  VMOT
+     *                                   MS1  O|     |O  GND
+     *                                   MS2  O|     |O  2B
+     *                                   MS3  O|     |O  2A
+     *                                /RESET  O|     |O  1A
+     *                                /SLEEP  O|     |O  1B
+     *  SPINDLE_LASER_PWM_PIN  STEP  O|     |O  VDD
+     *  SPINDLE_LASER_ENABLE_PIN         DIR  O|     |O  GND
+     *                                         -------
+     *
+     *  Note: Socket names vary from vendor to vendor.
+     */
+    #undef X_DIR_PIN
+    #undef X_ENABLE_PIN
+    #undef X_STEP_PIN
+    #define X_DIR_PIN                 0
+    #define X_ENABLE_PIN             14
+    #define X_STEP_PIN                1
+    #define SPINDLE_LASER_PWM_PIN    15  // MUST BE HARDWARE PWM
+    #define SPINDLE_LASER_ENABLE_PIN 21  // Pin should have a pullup!
+    #define SPINDLE_DIR_PIN          -1  // No pin available on the socket for the direction pin
+  #endif
+#endif // SPINDLE_LASER_ENABLE