Fix Black and White Typo (#2138)

* Fixed typo: Back->Black

* Added Upgrade Rules to fix spelling

* Removed extra isEmpty

* Added previous BackAndWhite to allow for compilation of old scripts

docs/reference/led.md

@@ -12,7 +12,7 @@ led.plotBrightness(0, 0, 255)
 led.setBrightness(255);
 led.stopAnimation();
 led.plotBarGraph(0, 0);
-led.setDisplayMode(DisplayMode.BackAndWhite);
+led.setDisplayMode(DisplayMode.BlackAndWhite);
 led.enable(false)
 ```
 

docs/reference/led/set-display-mode.md

@@ -18,7 +18,7 @@ to have some amount of brightness to represent the grey value of real color. The
 Set the display mode to `black and white`.
 
 ```blocks
-led.setDisplayMode(DisplayMode.BackAndWhite)
+led.setDisplayMode(DisplayMode.BlackAndWhite)
 ```
 
 ## See also

libs/core/_locales/core-strings.json

@@ -69,7 +69,7 @@
   "Dimension.Z|block": "z",
   "Direction.Left|block": "left",
   "Direction.Right|block": "right",
-  "DisplayMode.BackAndWhite|block": "black and white",
+  "DisplayMode.BlackAndWhite|block": "black and white",
   "DisplayMode.Greyscale|block": "greyscale",
   "EventCreationMode.CreateAndFire": "MicroBitEvent is initialised, and its event handlers are immediately fired (not suitable for use in interrupts!).",
   "EventCreationMode.CreateOnly": "MicroBitEvent is initialised, and no further processing takes place.",

libs/core/enums.d.ts

@@ -416,6 +416,8 @@ declare namespace control {
 
     declare const enum DisplayMode {
     //% block="black and white"
+    BlackAndWhite = 0,  // DISPLAY_MODE_BLACK_AND_WHITE
+    //% blockHidden=true
     BackAndWhite = 0,  // DISPLAY_MODE_BLACK_AND_WHITE
     //% block="greyscale"
     Greyscale = 1,  // DISPLAY_MODE_GREYSCALE

libs/core/led.cpp

@@ -2,6 +2,8 @@
 
 enum class DisplayMode_ {
     //% block="black and white"
+    BlackAndWhite = DISPLAY_MODE_BLACK_AND_WHITE,
+    //% blockHidden=true
     BackAndWhite = DISPLAY_MODE_BLACK_AND_WHITE,
     //% block="greyscale"
     Greyscale = DISPLAY_MODE_GREYSCALE,

pxtarget.json

@@ -88,6 +88,14 @@
                         "device_print_message.message": "text"
                     }
                 }
+            ],
+            "0.0.0 - 1.4.12": [
+                {
+                    "type": "api",
+                    "map": {
+                        "DisplayMode\\s*\\.\\s*BackAndWhite": "DisplayMode.BlackAndWhite"
+                    }
+                }
             ]
         },
         "hidSelectors": [