AP_Scripting: add proximity bindings

libraries/AP_Scripting/examples/proximity_test.lua

@@ -0,0 +1,27 @@
+-- This script checks Proximity
+
+function update()
+  sensor_count = proximity:num_sensors()
+  gcs:send_text(0, string.format("%d proximity sensors found.", sensor_count))
+
+  if sensor_count > 0 then
+    object_count = proximity:get_object_count()
+    gcs:send_text(0, string.format("%d objects found.", object_count))
+
+    closest_angle, closest_distance = proximity:get_closest_object()
+    if closest_angle and closest_distance then
+      gcs:send_text(0, "Closest object at angle "..closest_angle.." distance "..closest_distance)
+    end
+
+    for i = 0, object_count do
+      angle, distance = proximity:get_object_angle_and_distance(i)
+      if angle and distance then
+        gcs:send_text(0, "Object "..i.." at angle "..angle.." distance "..distance)
+      end
+    end
+  end
+
+  return update, 2000 -- check again in 0.5Hz
+end
+
+return update(), 2000 -- first message may be displayed 2 seconds after start-up

libraries/AP_Scripting/generator/description/bindings.desc

@@ -124,6 +124,14 @@ singleton AP_Notify alias notify
 singleton AP_Notify method play_tune void string
 singleton AP_Notify method handle_rgb void uint8_t 0 UINT8_MAX uint8_t 0 UINT8_MAX uint8_t 0 UINT8_MAX uint8_t 0 UINT8_MAX
 
+include AP_Proximity/AP_Proximity.h
+
+singleton AP_Proximity alias proximity
+singleton AP_Proximity method num_sensors uint8_t
+singleton AP_Proximity method get_object_count uint8_t
+singleton AP_Proximity method get_closest_object boolean float'Null float'Null
+singleton AP_Proximity method get_object_angle_and_distance boolean uint8_t 0 UINT8_MAX float'Null float'Null
+
 include AP_RangeFinder/AP_RangeFinder.h
 
 singleton RangeFinder alias rangefinder