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One-Time Scripts

WARNING - Running a One-Time script will suspend execution of all other currently loaded Lua scripts (Custom, Telemetry, and Functions)

Overview

One-Time scripts start when called upon by a specific radio function or when the user selects them from a contextual menu. They do their task and are then terminated and unloaded. Please note that all persistent scripts are halted during the execution of One-Time scripts. They are automatically restarted once the One-Time script is finished. This is done to provide enough system resources to execute the one time script.

Lifetime

Script is executed when user selects Execute on a script file from SD card browser screen.

Script executes until:

  • it returns value different from 0
  • is forcefully closed by user by long press of EXIT key
  • is forcefully closed by system if if it misbehaves (e.g. run-time error or low

memory)

File Location

Place them anywhere on SD card, the folder /SCRIPTS/ is recommended. The only exception is official model wizard script, that should be put into /SCRIPTS/WIZARD/ folder that way it will start automatically when new model is created.

Interface

Every script must include a return statement at the end, defining its interface to EdgeTX. This statement returns a table with the following fields:

  • init function (optional)
  • run function

Example

local function init()
  -- init is called once when model is loaded
end

local function run(event)
  -- run is called periodically only when screen is visible
  -- A non-zero return value will halt the script
  return x
end

return { run=run, init=init }

Notes:

  • The event parameter indicates which transmitter key has been pressed (see Key Events).
  • A non-zero return value from run will halt the script.