LUA Reference Guide
2.11
2.11
  • EdgeTX LUA Reference Guide
  • Overview
    • Lua Basics
    • LUA version and included libraries
      • io Library
    • Script Types
      • One-Time Scripts
      • Telemetry Scripts
      • Widget Scripts
      • Function Scripts
      • Mixes Scripts
    • Radios
      • BetaFPV
      • FlySky
      • FrSky
      • Jumper
      • Radiomaster
        • TX16S
    • Internal indexes
      • Source List
      • Switch Positions List
  • LUA API Reference
    • Constants
      • Color Constants
      • Flags and Pattern Constants
      • Key Event Constants
      • Logical Switch Function Constants
      • Screen Constants
      • Special Character Constants
      • Special Function Constants
      • Touch Event Constants
      • Widget Options Constants
      • Units
    • Display LCD
      • Lcd Functions Overview
      • lcd.clear
      • lcd.drawBitmap
      • lcd.drawChannel
      • lcd.drawCombobox(x, y, w, list, idx [, flags])
      • lcd.drawFilledRectangle(x, y, w, h [, flags])
      • lcd.drawGauge(x, y, w, h, fill, maxfill [, flags])
      • lcd.drawLine(x1, y1, x2, y2, pattern, flags)
      • lcd.drawNumber(x, y, value [, flags])
      • lcd.drawPixmap(x, y, name)
      • lcd.drawPoint(x, y)
      • lcd.drawRectangle(x, y, w, h [, flags [, t]])
      • lcd.drawScreenTitle(title, page, pages)
      • lcd.drawSource(x, y, source [, flags])
      • lcd.drawSwitch(x, y, switch, flags)
      • lcd.drawText(x, y, text [, flags])
      • lcd.drawTimer(x, y, value [, flags])
      • lcd.drawAnnulus(x, y, r1, r2, start, end [, flags])
      • lcd.drawArc(x, y, r, start, end [, flags])
      • lcd.drawCircle(x, y, r [, flags])
      • lcd.drawFilledCircle(x, y, r [, flags])
      • lcd.drawFilledTriangle(x1, y1, x2, y2, x3, y3 [, flags])
      • lcd.drawHudRectangle(pitch, roll, xmin, xmax, ymin, ymax [, flags])
      • lcd.drawLineWithClipping(x1, y1, x2, y2, xmin, xmax, ymin, ymax, pattern [, flags])
      • lcd.drawPie(x, y, r, start, end [, flags])
      • lcd.drawTriangle(x1, y1, x2, y2, x3, y3 [, flags])
      • lcd.getColor(area)
      • lcd.getLastLeftPos()
      • lcd.getLastPos()
      • lcd.getLastRightPos()
      • lcd.drawBitmapPattern(bitmap, x, y [, flags])
      • lcd.drawBitmapPatternPie(bitmap, x, y, startAngle, endAngle [, flags])
      • lcd.drawTextLines(x, y, w, h, text [, flags])
      • lcd.exitFullScreen()
      • lcd.invertRect(x, y, w, h [, flags])
      • lcd.refresh()
      • lcd.RGB
      • lcd.resetBacklightTimeout()
      • lcd.setColor(area, color)
      • lcd.sizeText(text [, flags])
      • popupConfirmation(title, message, event)
      • popupInput(title, event, input, min, max)
      • popupWarning(title, event)
      • GREY()
    • LVGL for Lua
      • Overview
      • Examples
      • Constants
      • API
      • lvgl.align
      • lvgl.arc
      • lvgl.box
      • lvgl.build
      • lvgl.button
      • lvgl.choice
      • lvgl.file
      • lvgl.circle
      • lvgl.clear
      • lvgl.color
      • lvgl.confirm
      • lvgl.dialog
      • lvgl.isAppMode
      • lvgl.isFullScreen
      • lvgl.exitFullScreen
      • lvgl.font
      • lvgl.getContext
      • lvgl.message
      • lvgl.momentaryButton
      • lvgl.hide
      • lvgl.hline
      • lvgl.image
      • lvgl.label
      • lvgl.line
      • lvgl.menu
      • lvgl.numberEdit
      • lvgl.page
      • lvgl.qrcode
      • lvgl.rectangle
      • lvgl.set
      • lvgl.setting
      • lvgl.show
      • lvgl.slider
      • lvgl.verticalSlider
      • lvgl.source
      • lvgl.switch
      • lvgl.textEdit
      • lvgl.timer
      • lvgl.toggle
      • lvgl.triangle
      • lvgl.vline
    • Model Functions
      • model.defaultInputs
      • model.deleteFlightModes
      • model.deleteInput
      • model.deleteInputs
      • model.deleteMix
      • model.deleteMixes
      • model.getCurve
      • model.getCustomFunction(function)
      • model.getFlightMode(index)
      • model.getGlobalVariable(index, flight_mode)
      • model.getInfo
      • model.getInput(input, line)
      • model.getInputsCount(input)
      • model.getLogicalSwitch(switch)
      • model.getMix(channel, line)
      • model.getMixesCount(channel)
      • model.getModule(index)
      • model.getOutput(index)
      • model.getSensor(sensor)
      • model.getTimer(timer)
      • model.insertInput(input, line, value)
      • model.insertMix(channel, line, value)
      • model.getSwashRing()
      • model.setSwashRing(params)
      • model.resetSensor(sensor)
      • model.resetTimer(timer)
      • model.setCurve(curve, params)
      • model.setCustomFunction(function, value)
      • model.setFlightMode(index, params)
      • model.setGlobalVariable(index, flight_mode, value)
      • model.setInfo(value)
      • model.setLogicalSwitch(switch, value)
      • model.setModule(index, value)
      • model.setOutput(index, value)
      • model.setTimer(timer, value)
    • Bitmap Functions
      • Bitmap.resize(bitmap, width, height)
      • Bitmap.toMask(bitmap)
      • Bitmap.getSize(name)
      • Bitmap.open(name)
    • Filesystem
      • chdir(directory)
      • del(file or directory)
      • dir(directory)
      • fstat(path)
    • Serial Ports
      • serialGetPower(port_nr)
      • serialRead([num])
      • serialSetPower(port_nr, value)
      • serialWrite(str)
      • setSerialBaudrate(baudrate)
    • System
      • defaultChannel(stick)
      • defaultStick(channel)
      • getGeneralSettings()
      • getVersion()
      • screenshot()
    • Key Inputs
      • getRotEncMode()
      • getRotEncSpeed()
      • killEvents(key)
    • LUA Scripts
      • getAvailableMemory()
      • getUsage()
      • loadScript(file [, mode], [,env])
    • Time
      • getDateTime()
      • getGlobalTimer()
      • getRtcTime()
      • getTime()
      • resetGlobalTimer([type])
    • Audio-Sound
      • playDuration(duration [, hourFormat])
      • playFile(name)
      • playHaptic(duration, pause [, flags])
      • playNumber(value, unit [, attributes])
      • playTone(frequency, duration, pause [, flags [, freqIncr]])
      • flushAudio()
    • Telemetry
      • getRSSI()
    • RF module
      • accessTelemetryPush()
      • crossfireTelemetryPop()
      • crossfireTelemetryPush()
      • ghostTelemetryPop()
      • ghostTelemetryPush()
      • sportTelemetryPop()
      • sportTelemetryPush()
      • getRAS()
      • multiBuffer(address[,value])
    • GPS
      • getTxGPS()
    • Variables
      • getFieldInfo(source)
      • getFlightMode(mode)
      • getLogicalSwitchValue(id)
      • getOutputValue(outputIndex)
      • getShmVar(id)
      • getSourceIndex(sourceName)
      • getSourceName(sourceIndex)
      • getSourceValue(source)
      • getSwitchIndex(positionName)
      • getSwitchName(switchIndex)
      • getSwitchValue(switchIndex)
      • getValue(source)
      • setShmVar(id, value)
      • setStickySwitch(id, value)
      • sources([first[, last]])
      • switches([first[, last]])
  • LUA API Programming
    • Data Exchange with the EdgeTX Model Setup
    • Drawing Flags and Colors
    • Init Function Syntax
    • Input Table Syntax
    • Loading Code Modules Dynamically
    • Output Table Syntax
    • Return Statement Syntax
    • Run Function Syntax
    • Saving Memory
    • Using Key and Touch Events
    • Advanced Topics
      • Debugging techniques
      • Lua data sharing across scripts
      • Speed/memory optimizaton tricks
  • Appendixes
    • Fonts
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  1. LUA API Programming

Init Function Syntax

If defined, init function is called right after the script is loaded from SD card and begins execution. Init is called only once before the run function is called for the first time.

local function <init_function_name>()
  -- code here runs only once when the model is loaded
end
  • Input Parameters:

    none

  • Return values:

    none

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Last updated 1 year ago

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