AP_Scripting: added 32 motor example

libraries/AP_Scripting/examples/MotorMatrix_32.lua

@@ -0,0 +1,17 @@
+-- This script is an example setting up a custom motor matrix mix
+
+local NUM_BANKS = 8
+
+-- duplicate a quad 8x for 32 motors
+for i = 1, NUM_BANKS do
+   local base = (i-1)*4
+   gcs:send_text(0, string.format("Setting up motor bank %u at %u", i, base))
+   MotorsMatrix:add_motor_raw(base+0, -1,  1,  1, base+2)
+   MotorsMatrix:add_motor_raw(base+1,  1, -1,  1, base+4)
+   MotorsMatrix:add_motor_raw(base+2,  1,  1, -1, base+1)
+   MotorsMatrix:add_motor_raw(base+3, -1, -1, -1, base+3)
+end
+
+assert(MotorsMatrix:init(NUM_BANKS*4), "Failed to init MotorsMatrix")
+
+motors:set_frame_string(string.format("Motors%u", NUM_BANKS*4))