support for rgb led in simulator

libs/core/basic.cpp

@@ -6,6 +6,26 @@
  */
 //% color=#0078D7 weight=100
 namespace basic {
+    /**
+    * Sets the color on the build-in LED. Set to 0 to turn off.
+    */
+    //% blockId=device_set_led_color block="set led to %color=color_id" icon="\uf00a"
+    //% weight=50
+    void setLedColor(int color) {
+      if (!color) {
+        uBit.rgb.Off();
+        return;
+      }
+
+      int w = (color >> 24) & 0xFF;
+      int r = (color >> 16) & 0xFF;
+      int g = (color >> 8) & 0xFF;
+      int b = (color) & 0xFF;
+      
+      uBit.rgb.Set_Color(r,g,b,w);
+      uBit.rgb.On();
+      uBit.rgb.Send_to_LED();
+    }
 
     /**
      * Scroll a number on the screen. If the number fits on the screen (i.e. is a single digit), do not scroll.

libs/core/basic.ts

@@ -4,31 +4,31 @@
 enum Colors {
     //% blockIdentity=basic.color
     //% block=red
-    Red = 0xFF0000,
+    Red = 0x00FF0000,
     //% blockIdentity=basic.color
     //% block=orange
-    Orange = 0xFFA500,
+    Orange = 0x00FFA500,
     //% blockIdentity=basic.color
     //% block=yellow
-    Yellow = 0xFFFF00,
+    Yellow = 0x00FFFF00,
     //% blockIdentity=basic.color
     //% block=green
-    Green = 0x00FF00,
+    Green = 0x0000FF00,
     //% blockIdentity=basic.color
     //% block=blue
-    Blue = 0x0000FF,
+    Blue = 0x000000FF,
     //% blockIdentity=basic.color
     //% block=indigo
-    Indigo = 0x4b0082,
+    Indigo = 0x004b0082,
     //% blockIdentity=basic.color
     //% block=violet
-    Violet = 0x8a2be2,
+    Violet = 0x008a2be2,
     //% blockIdentity=basic.color
     //% block=purple
-    Purple = 0xFF00FF,
+    Purple = 0x00FF00FF,
     //% blockIdentity=basic.color
     //% block=white
-    White = 0xFFFFFF
+    White = 0xFF00000
 }
 
 /**
@@ -36,16 +36,6 @@ enum Colors {
  */
 //% color=#0078D7 weight=100
 namespace basic {
-
-    /**
-    * Sets the color on the build-in LED
-    */
-    //% blockId=device_set_led_color block="set led to %color=color_id" icon="\uf00a"
-    //% weight=50
-    export function setLedColor(color: number) {
-        // TODO
-    }
-
     /**
      * Converts the color name to a number
      */
@@ -53,4 +43,17 @@ namespace basic {
     export function color(c: Colors): number {
         return c;
     }
+
+    /**
+     * Converts red, green, blue channels into a RGB color
+     * @param red value of the red channel between 0 and 255. eg: 255
+     * @param green value of the green channel between 0 and 255. eg: 255
+     * @param blue value of the blue channel between 0 and 255. eg: 255
+     * @param white value of the white channel between 0 and 255. eg: 0
+     */
+    //% weight=1
+    //% blockId="core_rgb" block="red %red|green %green|blue %blue|white %white"
+    export function rgbw(red: number, green: number, blue: number, white:number): number {
+        return ((white & 0xFF) << 24) | ((red & 0xFF) << 16) | ((green & 0xFF) << 8) | (blue & 0xFF);
+    }
 }

libs/core/shims.d.ts

@@ -128,6 +128,13 @@ declare interface Image {
     //% color=#0078D7 weight=100
 declare namespace basic {
 
+    /**
+     * Sets the color on the build-in LED. Set to 0 to turn off.
+     */
+    //% blockId=device_set_led_color block="set led to %color=color_id" icon="\uf00a"
+    //% weight=50 shim=basic::setLedColor
+    function setLedColor(color: number): void;
+
     /**
      * Scroll a number on the screen. If the number fits on the screen (i.e. is a single digit), do not scroll.
      * @param interval speed of scroll; eg: 150, 100, 200, -100

sim/state/rgbled.ts

@@ -1,5 +1,6 @@
 namespace pxsim.basic {
     export function setLedColor(c: number) {
         board().rgbLedState = c;
+        runtime.queueDisplayUpdate()
     }
 }

sim/visuals/microbit.ts

@@ -352,8 +352,16 @@ namespace pxsim.visuals {
             let state = this.board;
             if (state.rgbLedState) {
                 if (!this.rgbLed)
-                    this.rgbLed = svg.child(this.g, "circle", { cx: 170, cy: 200 });
-                svg.fill(this.rgbLed, svg.toHtmlColor(state.rgbLedState));
+                    this.rgbLed = svg.child(this.g, "circle", { cx: 170, cy: 190, r:5 });
+                const c = state.rgbLedState;
+                const b = c & 0xFF;
+                const g = (c >> 8) & 0xFF;
+                const r = (c >> 16) & 0xFF;
+                const w = (c >> 24) & 0xFF;
+                const ch =  `rgba(${r}, ${g}, ${b}, 1)`;
+                svg.fill(this.rgbLed, ch);
+            } else if (this.rgbLed) {
+                svg.fill(this.rgbLed, 'white');
             }
         }