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Whenever I try to run my Lua script, right after the first function, be it defining a parameter, mission planner (ground control station of ardupilot), display an error message saying unexpected token.

function pr()
local altitude = vehicle:get_altitude()
  if altitude > 1 
  then
    abc:set_value(1)
    gcs:send_text("Above 1m")
  else
    abc:set_value(0)
    gcs:send_text("Below 1m")
  end

return update, 500 
end


local abc = param:define_class("abc")
 abc:set_name("test")
 abc:set_description("This is a test parameter.")
 abc:set_value(1)


param:add_parameter(abc)
pr()

Here, right after the function, it displays an error message:

("SyntaxError: unexpected token 'abc'")

liggiorgio
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Abhishek Lohar
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1 Answers1

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abc is shown in the pr() function before it is defined. This is likely because you're defining abc as a local variable.

Some suggestions to fix it:

  • make abc a global variable by removing the local part. (I recall pico-8 auto defines variables that way)
  • add the abc as parameter to the pr() function , like pr(abc) at both locations
Steven
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