added "set accelerometer range"

sim/libmbit.ts

@@ -289,6 +289,12 @@ namespace ks.rt.micro_bit {
             default: return Math.sqrt(acc[0] * acc[0] + acc[1] * acc[1] + acc[2] * acc[2]);
         }
     }
+    
+    export function setAccelerometerRange(range : number) {
+        let b = board();
+        b.accelerometerRange = Math.max(1, Math.min(8, range));
+        b.updateView();
+    }
 
     export function lightLevel(): number {
         let b = board();

sim/state.ts

@@ -167,6 +167,7 @@ namespace ks.rt.micro_bit {
         // sensors    
         usesAcceleration = false;
         acceleration = [0, 0, -1023];
+        accelerometerRange = 2;
 
         usesHeading = false;
         heading = 90;