AP_Scripting: add ahrs-print-angle-and-rates example

libraries/AP_Scripting/examples/ahrs-print-angle-and-rates.lua

@@ -0,0 +1,21 @@
+-- This script displays the vehicle lean angles and rotation rates at 1hz
+
+function update() -- this is the loop which periodically runs
+  roll = math.deg(ahrs:get_roll())
+  pitch = math.deg(ahrs:get_pitch())
+  yaw = math.deg(ahrs:get_yaw())
+  rates = ahrs:get_gyro()
+  if rates then
+    roll_rate = math.deg(rates:x())
+    pitch_rate = math.deg(rates:y())
+    yaw_rate = math.deg(rates:z())
+  else
+    roll_rate = 0
+    pitch_rate = 0
+    yaw_rate = 0
+  end
+  gcs:send_text(0, string.format("Ang R:%.1f P:%.1f Y:%.1f Rate R:%.1f P:%.1f Y:%.1f", roll, pitch, yaw, roll_rate, pitch_rate, yaw_rate))
+  return update, 1000 -- reschedules the loop
+end
+
+return update() -- run immediately before starting to reschedule